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bodyshop/client/patches/peerjs+1.3.2.patch
Patrick Fic 71435ed75a Added patch for peerjs.
2021-09-01 14:14:20 -07:00

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diff --git a/node_modules/peerjs/dist/adapter.js b/node_modules/peerjs/dist/adapter.js
new file mode 100644
index 0000000..6bfbeb8
--- /dev/null
+++ b/node_modules/peerjs/dist/adapter.js
@@ -0,0 +1,8 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+ return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.webRTCAdapter = void 0;
+var webrtc_adapter_1 = __importDefault(require("webrtc-adapter"));
+exports.webRTCAdapter = webrtc_adapter_1.default;
diff --git a/node_modules/peerjs/dist/api.js b/node_modules/peerjs/dist/api.js
new file mode 100644
index 0000000..8c091c2
--- /dev/null
+++ b/node_modules/peerjs/dist/api.js
@@ -0,0 +1,142 @@
+"use strict";
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+ function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+ return new (P || (P = Promise))(function (resolve, reject) {
+ function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+ function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+ function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+ step((generator = generator.apply(thisArg, _arguments || [])).next());
+ });
+};
+var __generator = (this && this.__generator) || function (thisArg, body) {
+ var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
+ return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
+ function verb(n) { return function (v) { return step([n, v]); }; }
+ function step(op) {
+ if (f) throw new TypeError("Generator is already executing.");
+ while (_) try {
+ if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
+ if (y = 0, t) op = [op[0] & 2, t.value];
+ switch (op[0]) {
+ case 0: case 1: t = op; break;
+ case 4: _.label++; return { value: op[1], done: false };
+ case 5: _.label++; y = op[1]; op = [0]; continue;
+ case 7: op = _.ops.pop(); _.trys.pop(); continue;
+ default:
+ if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
+ if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
+ if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
+ if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
+ if (t[2]) _.ops.pop();
+ _.trys.pop(); continue;
+ }
+ op = body.call(thisArg, _);
+ } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
+ if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
+ }
+};
+var __importDefault = (this && this.__importDefault) || function (mod) {
+ return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.API = void 0;
+var util_1 = require("./util");
+var logger_1 = __importDefault(require("./logger"));
+var API = /** @class */ (function () {
+ function API(_options) {
+ this._options = _options;
+ }
+ API.prototype._buildUrl = function (method) {
+ var protocol = this._options.secure ? "https://" : "http://";
+ var url = protocol +
+ this._options.host +
+ ":" +
+ this._options.port +
+ this._options.path +
+ this._options.key +
+ "/" +
+ method;
+ var queryString = "?ts=" + new Date().getTime() + "" + Math.random();
+ url += queryString;
+ return url;
+ };
+ /** Get a unique ID from the server via XHR and initialize with it. */
+ API.prototype.retrieveId = function () {
+ return __awaiter(this, void 0, void 0, function () {
+ var url, response, error_1, pathError;
+ return __generator(this, function (_a) {
+ switch (_a.label) {
+ case 0:
+ url = this._buildUrl("id");
+ _a.label = 1;
+ case 1:
+ _a.trys.push([1, 3, , 4]);
+ return [4 /*yield*/, fetch(url)];
+ case 2:
+ response = _a.sent();
+ if (response.status !== 200) {
+ throw new Error("Error. Status:" + response.status);
+ }
+ return [2 /*return*/, response.text()];
+ case 3:
+ error_1 = _a.sent();
+ logger_1.default.error("Error retrieving ID", error_1);
+ pathError = "";
+ if (this._options.path === "/" &&
+ this._options.host !== util_1.util.CLOUD_HOST) {
+ pathError =
+ " If you passed in a `path` to your self-hosted PeerServer, " +
+ "you'll also need to pass in that same path when creating a new " +
+ "Peer.";
+ }
+ throw new Error("Could not get an ID from the server." + pathError);
+ case 4: return [2 /*return*/];
+ }
+ });
+ });
+ };
+ /** @deprecated */
+ API.prototype.listAllPeers = function () {
+ return __awaiter(this, void 0, void 0, function () {
+ var url, response, helpfulError, error_2;
+ return __generator(this, function (_a) {
+ switch (_a.label) {
+ case 0:
+ url = this._buildUrl("peers");
+ _a.label = 1;
+ case 1:
+ _a.trys.push([1, 3, , 4]);
+ return [4 /*yield*/, fetch(url)];
+ case 2:
+ response = _a.sent();
+ if (response.status !== 200) {
+ if (response.status === 401) {
+ helpfulError = "";
+ if (this._options.host === util_1.util.CLOUD_HOST) {
+ helpfulError =
+ "It looks like you're using the cloud server. You can email " +
+ "team@peerjs.com to enable peer listing for your API key.";
+ }
+ else {
+ helpfulError =
+ "You need to enable `allow_discovery` on your self-hosted " +
+ "PeerServer to use this feature.";
+ }
+ throw new Error("It doesn't look like you have permission to list peers IDs. " +
+ helpfulError);
+ }
+ throw new Error("Error. Status:" + response.status);
+ }
+ return [2 /*return*/, response.json()];
+ case 3:
+ error_2 = _a.sent();
+ logger_1.default.error("Error retrieving list peers", error_2);
+ throw new Error("Could not get list peers from the server." + error_2);
+ case 4: return [2 /*return*/];
+ }
+ });
+ });
+ };
+ return API;
+}());
+exports.API = API;
diff --git a/node_modules/peerjs/dist/baseconnection.js b/node_modules/peerjs/dist/baseconnection.js
new file mode 100644
index 0000000..0c4e504
--- /dev/null
+++ b/node_modules/peerjs/dist/baseconnection.js
@@ -0,0 +1,40 @@
+"use strict";
+var __extends = (this && this.__extends) || (function () {
+ var extendStatics = function (d, b) {
+ extendStatics = Object.setPrototypeOf ||
+ ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+ function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
+ return extendStatics(d, b);
+ };
+ return function (d, b) {
+ if (typeof b !== "function" && b !== null)
+ throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
+ extendStatics(d, b);
+ function __() { this.constructor = d; }
+ d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+ };
+})();
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.BaseConnection = void 0;
+var eventemitter3_1 = require("eventemitter3");
+var BaseConnection = /** @class */ (function (_super) {
+ __extends(BaseConnection, _super);
+ function BaseConnection(peer, provider, options) {
+ var _this = _super.call(this) || this;
+ _this.peer = peer;
+ _this.provider = provider;
+ _this.options = options;
+ _this._open = false;
+ _this.metadata = options.metadata;
+ return _this;
+ }
+ Object.defineProperty(BaseConnection.prototype, "open", {
+ get: function () {
+ return this._open;
+ },
+ enumerable: false,
+ configurable: true
+ });
+ return BaseConnection;
+}(eventemitter3_1.EventEmitter));
+exports.BaseConnection = BaseConnection;
diff --git a/node_modules/peerjs/dist/dataconnection.js b/node_modules/peerjs/dist/dataconnection.js
new file mode 100644
index 0000000..64262ac
--- /dev/null
+++ b/node_modules/peerjs/dist/dataconnection.js
@@ -0,0 +1,298 @@
+"use strict";
+var __extends = (this && this.__extends) || (function () {
+ var extendStatics = function (d, b) {
+ extendStatics = Object.setPrototypeOf ||
+ ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+ function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
+ return extendStatics(d, b);
+ };
+ return function (d, b) {
+ if (typeof b !== "function" && b !== null)
+ throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
+ extendStatics(d, b);
+ function __() { this.constructor = d; }
+ d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+ };
+})();
+var __importDefault = (this && this.__importDefault) || function (mod) {
+ return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.DataConnection = void 0;
+var util_1 = require("./util");
+var logger_1 = __importDefault(require("./logger"));
+var negotiator_1 = require("./negotiator");
+var enums_1 = require("./enums");
+var baseconnection_1 = require("./baseconnection");
+var encodingQueue_1 = require("./encodingQueue");
+/**
+ * Wraps a DataChannel between two Peers.
+ */
+// @ts-ignore
+var DataConnection = /** @class */ (function (_super) {
+ __extends(DataConnection, _super);
+ function DataConnection(peerId, provider, options) {
+ var _this = _super.call(this, peerId, provider, options) || this;
+ _this.stringify = JSON.stringify;
+ _this.parse = JSON.parse;
+ _this._buffer = [];
+ _this._bufferSize = 0;
+ _this._buffering = false;
+ _this._chunkedData = {};
+ _this._encodingQueue = new encodingQueue_1.EncodingQueue();
+ _this.connectionId =
+ _this.options.connectionId || DataConnection.ID_PREFIX + util_1.util.randomToken();
+ _this.label = _this.options.label || _this.connectionId;
+ _this.serialization = _this.options.serialization || enums_1.SerializationType.Binary;
+ _this.reliable = !!_this.options.reliable;
+ _this._encodingQueue.on('done', function (ab) {
+ _this._bufferedSend(ab);
+ });
+ _this._encodingQueue.on('error', function () {
+ logger_1.default.error("DC#" + _this.connectionId + ": Error occured in encoding from blob to arraybuffer, close DC");
+ _this.close();
+ });
+ _this._negotiator = new negotiator_1.Negotiator(_this);
+ _this._negotiator.startConnection(_this.options._payload || {
+ originator: true
+ });
+ return _this;
+ }
+ Object.defineProperty(DataConnection.prototype, "type", {
+ get: function () {
+ return enums_1.ConnectionType.Data;
+ },
+ enumerable: false,
+ configurable: true
+ });
+ Object.defineProperty(DataConnection.prototype, "dataChannel", {
+ get: function () {
+ return this._dc;
+ },
+ enumerable: false,
+ configurable: true
+ });
+ Object.defineProperty(DataConnection.prototype, "bufferSize", {
+ get: function () { return this._bufferSize; },
+ enumerable: false,
+ configurable: true
+ });
+ /** Called by the Negotiator when the DataChannel is ready. */
+ DataConnection.prototype.initialize = function (dc) {
+ this._dc = dc;
+ this._configureDataChannel();
+ };
+ DataConnection.prototype._configureDataChannel = function () {
+ var _this = this;
+ if (!util_1.util.supports.binaryBlob || util_1.util.supports.reliable) {
+ this.dataChannel.binaryType = "arraybuffer";
+ }
+ this.dataChannel.onopen = function () {
+ logger_1.default.log("DC#" + _this.connectionId + " dc connection success");
+ _this._open = true;
+ _this.emit(enums_1.ConnectionEventType.Open);
+ };
+ this.dataChannel.onmessage = function (e) {
+ logger_1.default.log("DC#" + _this.connectionId + " dc onmessage:", e.data);
+ _this._handleDataMessage(e);
+ };
+ this.dataChannel.onclose = function () {
+ logger_1.default.log("DC#" + _this.connectionId + " dc closed for:", _this.peer);
+ _this.close();
+ };
+ };
+ // Handles a DataChannel message.
+ DataConnection.prototype._handleDataMessage = function (_a) {
+ var _this = this;
+ var data = _a.data;
+ var datatype = data.constructor;
+ var isBinarySerialization = this.serialization === enums_1.SerializationType.Binary ||
+ this.serialization === enums_1.SerializationType.BinaryUTF8;
+ var deserializedData = data;
+ if (isBinarySerialization) {
+ if (datatype === Blob) {
+ // Datatype should never be blob
+ util_1.util.blobToArrayBuffer(data, function (ab) {
+ // @ts-ignore
+ var unpackedData = util_1.util.unpack(ab);
+ _this.emit(enums_1.ConnectionEventType.Data, unpackedData);
+ });
+ return;
+ }
+ else if (datatype === ArrayBuffer) {
+ deserializedData = util_1.util.unpack(data);
+ }
+ else if (datatype === String) {
+ // String fallback for binary data for browsers that don't support binary yet
+ var ab = util_1.util.binaryStringToArrayBuffer(data);
+ deserializedData = util_1.util.unpack(ab);
+ }
+ }
+ else if (this.serialization === enums_1.SerializationType.JSON) {
+ deserializedData = this.parse(data);
+ }
+ // Check if we've chunked--if so, piece things back together.
+ // We're guaranteed that this isn't 0.
+ if (deserializedData.__peerData) {
+ this._handleChunk(deserializedData);
+ return;
+ }
+ _super.prototype.emit.call(this, enums_1.ConnectionEventType.Data, deserializedData);
+ };
+ DataConnection.prototype._handleChunk = function (data) {
+ var id = data.__peerData;
+ var chunkInfo = this._chunkedData[id] || {
+ data: [],
+ count: 0,
+ total: data.total
+ };
+ chunkInfo.data[data.n] = data.data;
+ chunkInfo.count++;
+ this._chunkedData[id] = chunkInfo;
+ if (chunkInfo.total === chunkInfo.count) {
+ // Clean up before making the recursive call to `_handleDataMessage`.
+ delete this._chunkedData[id];
+ // We've received all the chunks--time to construct the complete data.
+ var data_1 = new Blob(chunkInfo.data);
+ this._handleDataMessage({ data: data_1 });
+ }
+ };
+ /**
+ * Exposed functionality for users.
+ */
+ /** Allows user to close connection. */
+ DataConnection.prototype.close = function () {
+ this._buffer = [];
+ this._bufferSize = 0;
+ this._chunkedData = {};
+ if (this._negotiator) {
+ this._negotiator.cleanup();
+ // @ts-ignore
+ this._negotiator = null;
+ }
+ if (this.provider) {
+ this.provider._removeConnection(this);
+ // @ts-ignore
+ this.provider = null;
+ }
+ if (this.dataChannel) {
+ this.dataChannel.onopen = null;
+ this.dataChannel.onmessage = null;
+ this.dataChannel.onclose = null;
+ // @ts-ignore
+ this._dc = null;
+ }
+ if (this._encodingQueue) {
+ this._encodingQueue.destroy();
+ this._encodingQueue.removeAllListeners();
+ // @ts-ignore
+ this._encodingQueue = null;
+ }
+ if (!this.open) {
+ return;
+ }
+ this._open = false;
+ _super.prototype.emit.call(this, enums_1.ConnectionEventType.Close);
+ };
+ /** Allows user to send data. */
+ DataConnection.prototype.send = function (data, chunked) {
+ if (!this.open) {
+ _super.prototype.emit.call(this, enums_1.ConnectionEventType.Error, new Error("Connection is not open. You should listen for the `open` event before sending messages."));
+ return;
+ }
+ if (this.serialization === enums_1.SerializationType.JSON) {
+ this._bufferedSend(this.stringify(data));
+ }
+ else if (this.serialization === enums_1.SerializationType.Binary ||
+ this.serialization === enums_1.SerializationType.BinaryUTF8) {
+ var blob = util_1.util.pack(data);
+ if (!chunked && blob.size > util_1.util.chunkedMTU) {
+ this._sendChunks(blob);
+ return;
+ }
+ if (!util_1.util.supports.binaryBlob) {
+ // We only do this if we really need to (e.g. blobs are not supported),
+ // because this conversion is costly.
+ this._encodingQueue.enque(blob);
+ }
+ else {
+ this._bufferedSend(blob);
+ }
+ }
+ else {
+ this._bufferedSend(data);
+ }
+ };
+ DataConnection.prototype._bufferedSend = function (msg) {
+ if (this._buffering || !this._trySend(msg)) {
+ this._buffer.push(msg);
+ this._bufferSize = this._buffer.length;
+ }
+ };
+ // Returns true if the send succeeds.
+ DataConnection.prototype._trySend = function (msg) {
+ var _this = this;
+ if (!this.open) {
+ return false;
+ }
+ if (this.dataChannel.bufferedAmount > DataConnection.MAX_BUFFERED_AMOUNT) {
+ this._buffering = true;
+ setTimeout(function () {
+ _this._buffering = false;
+ _this._tryBuffer();
+ }, 50);
+ return false;
+ }
+ try {
+ this.dataChannel.send(msg);
+ }
+ catch (e) {
+ logger_1.default.error("DC#:" + this.connectionId + " Error when sending:", e);
+ this._buffering = true;
+ this.close();
+ return false;
+ }
+ return true;
+ };
+ // Try to send the first message in the buffer.
+ DataConnection.prototype._tryBuffer = function () {
+ if (!this.open) {
+ return;
+ }
+ if (this._buffer.length === 0) {
+ return;
+ }
+ var msg = this._buffer[0];
+ if (this._trySend(msg)) {
+ this._buffer.shift();
+ this._bufferSize = this._buffer.length;
+ this._tryBuffer();
+ }
+ };
+ DataConnection.prototype._sendChunks = function (blob) {
+ var blobs = util_1.util.chunk(blob);
+ logger_1.default.log("DC#" + this.connectionId + " Try to send " + blobs.length + " chunks...");
+ for (var _i = 0, blobs_1 = blobs; _i < blobs_1.length; _i++) {
+ var blob_1 = blobs_1[_i];
+ this.send(blob_1, true);
+ }
+ };
+ DataConnection.prototype.handleMessage = function (message) {
+ var payload = message.payload;
+ switch (message.type) {
+ case enums_1.ServerMessageType.Answer:
+ this._negotiator.handleSDP(message.type, payload.sdp);
+ break;
+ case enums_1.ServerMessageType.Candidate:
+ this._negotiator.handleCandidate(payload.candidate);
+ break;
+ default:
+ logger_1.default.warn("Unrecognized message type:", message.type, "from peer:", this.peer);
+ break;
+ }
+ };
+ DataConnection.ID_PREFIX = "dc_";
+ DataConnection.MAX_BUFFERED_AMOUNT = 8 * 1024 * 1024;
+ return DataConnection;
+}(baseconnection_1.BaseConnection));
+exports.DataConnection = DataConnection;
diff --git a/node_modules/peerjs/dist/encodingQueue.js b/node_modules/peerjs/dist/encodingQueue.js
new file mode 100644
index 0000000..c9ca6b5
--- /dev/null
+++ b/node_modules/peerjs/dist/encodingQueue.js
@@ -0,0 +1,88 @@
+"use strict";
+var __extends = (this && this.__extends) || (function () {
+ var extendStatics = function (d, b) {
+ extendStatics = Object.setPrototypeOf ||
+ ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+ function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
+ return extendStatics(d, b);
+ };
+ return function (d, b) {
+ if (typeof b !== "function" && b !== null)
+ throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
+ extendStatics(d, b);
+ function __() { this.constructor = d; }
+ d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+ };
+})();
+var __importDefault = (this && this.__importDefault) || function (mod) {
+ return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.EncodingQueue = void 0;
+var eventemitter3_1 = require("eventemitter3");
+var logger_1 = __importDefault(require("./logger"));
+var EncodingQueue = /** @class */ (function (_super) {
+ __extends(EncodingQueue, _super);
+ function EncodingQueue() {
+ var _this = _super.call(this) || this;
+ _this.fileReader = new FileReader();
+ _this._queue = [];
+ _this._processing = false;
+ _this.fileReader.onload = function (evt) {
+ _this._processing = false;
+ if (evt.target) {
+ _this.emit('done', evt.target.result);
+ }
+ _this.doNextTask();
+ };
+ _this.fileReader.onerror = function (evt) {
+ logger_1.default.error("EncodingQueue error:", evt);
+ _this._processing = false;
+ _this.destroy();
+ _this.emit('error', evt);
+ };
+ return _this;
+ }
+ Object.defineProperty(EncodingQueue.prototype, "queue", {
+ get: function () {
+ return this._queue;
+ },
+ enumerable: false,
+ configurable: true
+ });
+ Object.defineProperty(EncodingQueue.prototype, "size", {
+ get: function () {
+ return this.queue.length;
+ },
+ enumerable: false,
+ configurable: true
+ });
+ Object.defineProperty(EncodingQueue.prototype, "processing", {
+ get: function () {
+ return this._processing;
+ },
+ enumerable: false,
+ configurable: true
+ });
+ EncodingQueue.prototype.enque = function (blob) {
+ this.queue.push(blob);
+ if (this.processing)
+ return;
+ this.doNextTask();
+ };
+ EncodingQueue.prototype.destroy = function () {
+ this.fileReader.abort();
+ this._queue = [];
+ };
+ EncodingQueue.prototype.doNextTask = function () {
+ if (this.size === 0)
+ return;
+ if (this.processing)
+ return;
+ this._processing = true;
+ // @ts-ignore
+ this.fileReader.readAsArrayBuffer(this.queue.shift());
+ };
+ return EncodingQueue;
+}(eventemitter3_1.EventEmitter));
+exports.EncodingQueue = EncodingQueue;
diff --git a/node_modules/peerjs/dist/enums.js b/node_modules/peerjs/dist/enums.js
new file mode 100644
index 0000000..9e551a4
--- /dev/null
+++ b/node_modules/peerjs/dist/enums.js
@@ -0,0 +1,67 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ServerMessageType = exports.SocketEventType = exports.SerializationType = exports.PeerErrorType = exports.PeerEventType = exports.ConnectionType = exports.ConnectionEventType = void 0;
+var ConnectionEventType;
+(function (ConnectionEventType) {
+ ConnectionEventType["Open"] = "open";
+ ConnectionEventType["Stream"] = "stream";
+ ConnectionEventType["Data"] = "data";
+ ConnectionEventType["Close"] = "close";
+ ConnectionEventType["Error"] = "error";
+ ConnectionEventType["IceStateChanged"] = "iceStateChanged";
+})(ConnectionEventType = exports.ConnectionEventType || (exports.ConnectionEventType = {}));
+var ConnectionType;
+(function (ConnectionType) {
+ ConnectionType["Data"] = "data";
+ ConnectionType["Media"] = "media";
+})(ConnectionType = exports.ConnectionType || (exports.ConnectionType = {}));
+var PeerEventType;
+(function (PeerEventType) {
+ PeerEventType["Open"] = "open";
+ PeerEventType["Close"] = "close";
+ PeerEventType["Connection"] = "connection";
+ PeerEventType["Call"] = "call";
+ PeerEventType["Disconnected"] = "disconnected";
+ PeerEventType["Error"] = "error";
+})(PeerEventType = exports.PeerEventType || (exports.PeerEventType = {}));
+var PeerErrorType;
+(function (PeerErrorType) {
+ PeerErrorType["BrowserIncompatible"] = "browser-incompatible";
+ PeerErrorType["Disconnected"] = "disconnected";
+ PeerErrorType["InvalidID"] = "invalid-id";
+ PeerErrorType["InvalidKey"] = "invalid-key";
+ PeerErrorType["Network"] = "network";
+ PeerErrorType["PeerUnavailable"] = "peer-unavailable";
+ PeerErrorType["SslUnavailable"] = "ssl-unavailable";
+ PeerErrorType["ServerError"] = "server-error";
+ PeerErrorType["SocketError"] = "socket-error";
+ PeerErrorType["SocketClosed"] = "socket-closed";
+ PeerErrorType["UnavailableID"] = "unavailable-id";
+ PeerErrorType["WebRTC"] = "webrtc";
+})(PeerErrorType = exports.PeerErrorType || (exports.PeerErrorType = {}));
+var SerializationType;
+(function (SerializationType) {
+ SerializationType["Binary"] = "binary";
+ SerializationType["BinaryUTF8"] = "binary-utf8";
+ SerializationType["JSON"] = "json";
+})(SerializationType = exports.SerializationType || (exports.SerializationType = {}));
+var SocketEventType;
+(function (SocketEventType) {
+ SocketEventType["Message"] = "message";
+ SocketEventType["Disconnected"] = "disconnected";
+ SocketEventType["Error"] = "error";
+ SocketEventType["Close"] = "close";
+})(SocketEventType = exports.SocketEventType || (exports.SocketEventType = {}));
+var ServerMessageType;
+(function (ServerMessageType) {
+ ServerMessageType["Heartbeat"] = "HEARTBEAT";
+ ServerMessageType["Candidate"] = "CANDIDATE";
+ ServerMessageType["Offer"] = "OFFER";
+ ServerMessageType["Answer"] = "ANSWER";
+ ServerMessageType["Open"] = "OPEN";
+ ServerMessageType["Error"] = "ERROR";
+ ServerMessageType["IdTaken"] = "ID-TAKEN";
+ ServerMessageType["InvalidKey"] = "INVALID-KEY";
+ ServerMessageType["Leave"] = "LEAVE";
+ ServerMessageType["Expire"] = "EXPIRE"; // The offer sent to a peer has expired without response.
+})(ServerMessageType = exports.ServerMessageType || (exports.ServerMessageType = {}));
diff --git a/node_modules/peerjs/dist/exports.js b/node_modules/peerjs/dist/exports.js
new file mode 100644
index 0000000..d6e2666
--- /dev/null
+++ b/node_modules/peerjs/dist/exports.js
@@ -0,0 +1,13 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.peerjs = void 0;
+var util_1 = require("./util");
+var peer_1 = require("./peer");
+exports.peerjs = {
+ Peer: peer_1.Peer,
+ util: util_1.util
+};
+exports.default = peer_1.Peer;
+window.peerjs = exports.peerjs;
+/** @deprecated Should use peerjs namespace */
+window.Peer = peer_1.Peer;
diff --git a/node_modules/peerjs/dist/index.js b/node_modules/peerjs/dist/index.js
new file mode 100644
index 0000000..e7d6ac1
--- /dev/null
+++ b/node_modules/peerjs/dist/index.js
@@ -0,0 +1,27 @@
+"use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+ if (k2 === undefined) k2 = k;
+ Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
+}) : (function(o, m, k, k2) {
+ if (k2 === undefined) k2 = k;
+ o[k2] = m[k];
+}));
+var __exportStar = (this && this.__exportStar) || function(m, exports) {
+ for (var p in m) if (p !== "default" && !Object.prototype.hasOwnProperty.call(exports, p)) __createBinding(exports, m, p);
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+__exportStar(require("./adapter"), exports);
+__exportStar(require("./api"), exports);
+__exportStar(require("./baseconnection"), exports);
+__exportStar(require("./dataconnection"), exports);
+__exportStar(require("./encodingQueue"), exports);
+__exportStar(require("./enums"), exports);
+__exportStar(require("./exports"), exports);
+__exportStar(require("./logger"), exports);
+__exportStar(require("./mediaconnection"), exports);
+__exportStar(require("./negotiator"), exports);
+__exportStar(require("./peer"), exports);
+__exportStar(require("./servermessage"), exports);
+__exportStar(require("./socket"), exports);
+__exportStar(require("./supports"), exports);
+__exportStar(require("./util"), exports);
diff --git a/node_modules/peerjs/dist/logger.js b/node_modules/peerjs/dist/logger.js
new file mode 100644
index 0000000..9a5e883
--- /dev/null
+++ b/node_modules/peerjs/dist/logger.js
@@ -0,0 +1,87 @@
+"use strict";
+var __spreadArray = (this && this.__spreadArray) || function (to, from) {
+ for (var i = 0, il = from.length, j = to.length; i < il; i++, j++)
+ to[j] = from[i];
+ return to;
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.LogLevel = void 0;
+var LOG_PREFIX = 'PeerJS: ';
+/*
+Prints log messages depending on the debug level passed in. Defaults to 0.
+0 Prints no logs.
+1 Prints only errors.
+2 Prints errors and warnings.
+3 Prints all logs.
+*/
+var LogLevel;
+(function (LogLevel) {
+ LogLevel[LogLevel["Disabled"] = 0] = "Disabled";
+ LogLevel[LogLevel["Errors"] = 1] = "Errors";
+ LogLevel[LogLevel["Warnings"] = 2] = "Warnings";
+ LogLevel[LogLevel["All"] = 3] = "All";
+})(LogLevel = exports.LogLevel || (exports.LogLevel = {}));
+var Logger = /** @class */ (function () {
+ function Logger() {
+ this._logLevel = LogLevel.Disabled;
+ }
+ Object.defineProperty(Logger.prototype, "logLevel", {
+ get: function () { return this._logLevel; },
+ set: function (logLevel) { this._logLevel = logLevel; },
+ enumerable: false,
+ configurable: true
+ });
+ Logger.prototype.log = function () {
+ var args = [];
+ for (var _i = 0; _i < arguments.length; _i++) {
+ args[_i] = arguments[_i];
+ }
+ if (this._logLevel >= LogLevel.All) {
+ this._print.apply(this, __spreadArray([LogLevel.All], args));
+ }
+ };
+ Logger.prototype.warn = function () {
+ var args = [];
+ for (var _i = 0; _i < arguments.length; _i++) {
+ args[_i] = arguments[_i];
+ }
+ if (this._logLevel >= LogLevel.Warnings) {
+ this._print.apply(this, __spreadArray([LogLevel.Warnings], args));
+ }
+ };
+ Logger.prototype.error = function () {
+ var args = [];
+ for (var _i = 0; _i < arguments.length; _i++) {
+ args[_i] = arguments[_i];
+ }
+ if (this._logLevel >= LogLevel.Errors) {
+ this._print.apply(this, __spreadArray([LogLevel.Errors], args));
+ }
+ };
+ Logger.prototype.setLogFunction = function (fn) {
+ this._print = fn;
+ };
+ Logger.prototype._print = function (logLevel) {
+ var rest = [];
+ for (var _i = 1; _i < arguments.length; _i++) {
+ rest[_i - 1] = arguments[_i];
+ }
+ var copy = __spreadArray([LOG_PREFIX], rest);
+ for (var i in copy) {
+ if (copy[i] instanceof Error) {
+ copy[i] = "(" + copy[i].name + ") " + copy[i].message;
+ }
+ }
+ if (logLevel >= LogLevel.All) {
+ console.log.apply(console, copy);
+ }
+ else if (logLevel >= LogLevel.Warnings) {
+ console.warn.apply(console, __spreadArray(["WARNING"], copy));
+ }
+ else if (logLevel >= LogLevel.Errors) {
+ console.error.apply(console, __spreadArray(["ERROR"], copy));
+ }
+ };
+ return Logger;
+}());
+exports.default = new Logger();
diff --git a/node_modules/peerjs/dist/mediaconnection.js b/node_modules/peerjs/dist/mediaconnection.js
new file mode 100644
index 0000000..2318160
--- /dev/null
+++ b/node_modules/peerjs/dist/mediaconnection.js
@@ -0,0 +1,148 @@
+"use strict";
+var __extends = (this && this.__extends) || (function () {
+ var extendStatics = function (d, b) {
+ extendStatics = Object.setPrototypeOf ||
+ ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+ function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
+ return extendStatics(d, b);
+ };
+ return function (d, b) {
+ if (typeof b !== "function" && b !== null)
+ throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
+ extendStatics(d, b);
+ function __() { this.constructor = d; }
+ d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+ };
+})();
+var __assign = (this && this.__assign) || function () {
+ __assign = Object.assign || function(t) {
+ for (var s, i = 1, n = arguments.length; i < n; i++) {
+ s = arguments[i];
+ for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
+ t[p] = s[p];
+ }
+ return t;
+ };
+ return __assign.apply(this, arguments);
+};
+var __importDefault = (this && this.__importDefault) || function (mod) {
+ return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.MediaConnection = void 0;
+var util_1 = require("./util");
+var logger_1 = __importDefault(require("./logger"));
+var negotiator_1 = require("./negotiator");
+var enums_1 = require("./enums");
+var baseconnection_1 = require("./baseconnection");
+/**
+ * Wraps the streaming interface between two Peers.
+ */
+var MediaConnection = /** @class */ (function (_super) {
+ __extends(MediaConnection, _super);
+ function MediaConnection(peerId, provider, options) {
+ var _this = _super.call(this, peerId, provider, options) || this;
+ _this._localStream = _this.options._stream;
+ _this.connectionId =
+ _this.options.connectionId ||
+ MediaConnection.ID_PREFIX + util_1.util.randomToken();
+ _this._negotiator = new negotiator_1.Negotiator(_this);
+ if (_this._localStream) {
+ _this._negotiator.startConnection({
+ _stream: _this._localStream,
+ originator: true
+ });
+ }
+ return _this;
+ }
+ Object.defineProperty(MediaConnection.prototype, "type", {
+ get: function () {
+ return enums_1.ConnectionType.Media;
+ },
+ enumerable: false,
+ configurable: true
+ });
+ Object.defineProperty(MediaConnection.prototype, "localStream", {
+ get: function () { return this._localStream; },
+ enumerable: false,
+ configurable: true
+ });
+ Object.defineProperty(MediaConnection.prototype, "remoteStream", {
+ get: function () { return this._remoteStream; },
+ enumerable: false,
+ configurable: true
+ });
+ // @ts-ignore
+ MediaConnection.prototype.addStream = function (remoteStream) {
+ logger_1.default.log("Receiving stream", remoteStream);
+ this._remoteStream = remoteStream;
+ _super.prototype.emit.call(this, enums_1.ConnectionEventType.Stream, remoteStream); // Should we call this `open`?
+ };
+ MediaConnection.prototype.handleMessage = function (message) {
+ var type = message.type;
+ var payload = message.payload;
+ switch (message.type) {
+ case enums_1.ServerMessageType.Answer:
+ // Forward to negotiator
+ this._negotiator.handleSDP(type, payload.sdp);
+ this._open = true;
+ break;
+ case enums_1.ServerMessageType.Candidate:
+ this._negotiator.handleCandidate(payload.candidate);
+ break;
+ default:
+ logger_1.default.warn("Unrecognized message type:" + type + " from peer:" + this.peer);
+ break;
+ }
+ };
+ MediaConnection.prototype.answer = function (stream, options) {
+ if (options === void 0) { options = {}; }
+ if (this._localStream) {
+ logger_1.default.warn("Local stream already exists on this MediaConnection. Are you answering a call twice?");
+ return;
+ }
+ this._localStream = stream;
+ if (options && options.sdpTransform) {
+ this.options.sdpTransform = options.sdpTransform;
+ }
+ this._negotiator.startConnection(__assign(__assign({}, this.options._payload), { _stream: stream }));
+ // Retrieve lost messages stored because PeerConnection not set up.
+ var messages = this.provider._getMessages(this.connectionId);
+ for (var _i = 0, messages_1 = messages; _i < messages_1.length; _i++) {
+ var message = messages_1[_i];
+ this.handleMessage(message);
+ }
+ this._open = true;
+ };
+ /**
+ * Exposed functionality for users.
+ */
+ /** Allows user to close connection. */
+ MediaConnection.prototype.close = function () {
+ if (this._negotiator) {
+ this._negotiator.cleanup();
+ // @ts-ignore
+ this._negotiator = null;
+ }
+ // @ts-ignore
+ this._localStream = null;
+ // @ts-ignore
+ this._remoteStream = null;
+ if (this.provider) {
+ this.provider._removeConnection(this);
+ // @ts-ignore
+ this.provider = null;
+ }
+ if (this.options && this.options._stream) {
+ this.options._stream = null;
+ }
+ if (!this.open) {
+ return;
+ }
+ this._open = false;
+ _super.prototype.emit.call(this, enums_1.ConnectionEventType.Close);
+ };
+ MediaConnection.ID_PREFIX = "mc_";
+ return MediaConnection;
+}(baseconnection_1.BaseConnection));
+exports.MediaConnection = MediaConnection;
diff --git a/node_modules/peerjs/dist/negotiator.js b/node_modules/peerjs/dist/negotiator.js
new file mode 100644
index 0000000..afd9687
--- /dev/null
+++ b/node_modules/peerjs/dist/negotiator.js
@@ -0,0 +1,385 @@
+"use strict";
+var __assign = (this && this.__assign) || function () {
+ __assign = Object.assign || function(t) {
+ for (var s, i = 1, n = arguments.length; i < n; i++) {
+ s = arguments[i];
+ for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
+ t[p] = s[p];
+ }
+ return t;
+ };
+ return __assign.apply(this, arguments);
+};
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+ function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+ return new (P || (P = Promise))(function (resolve, reject) {
+ function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+ function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+ function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+ step((generator = generator.apply(thisArg, _arguments || [])).next());
+ });
+};
+var __generator = (this && this.__generator) || function (thisArg, body) {
+ var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
+ return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
+ function verb(n) { return function (v) { return step([n, v]); }; }
+ function step(op) {
+ if (f) throw new TypeError("Generator is already executing.");
+ while (_) try {
+ if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
+ if (y = 0, t) op = [op[0] & 2, t.value];
+ switch (op[0]) {
+ case 0: case 1: t = op; break;
+ case 4: _.label++; return { value: op[1], done: false };
+ case 5: _.label++; y = op[1]; op = [0]; continue;
+ case 7: op = _.ops.pop(); _.trys.pop(); continue;
+ default:
+ if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
+ if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
+ if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
+ if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
+ if (t[2]) _.ops.pop();
+ _.trys.pop(); continue;
+ }
+ op = body.call(thisArg, _);
+ } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
+ if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
+ }
+};
+var __importDefault = (this && this.__importDefault) || function (mod) {
+ return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Negotiator = void 0;
+var util_1 = require("./util");
+var logger_1 = __importDefault(require("./logger"));
+var enums_1 = require("./enums");
+/**
+ * Manages all negotiations between Peers.
+ */
+var Negotiator = /** @class */ (function () {
+ function Negotiator(connection) {
+ this.connection = connection;
+ }
+ /** Returns a PeerConnection object set up correctly (for data, media). */
+ Negotiator.prototype.startConnection = function (options) {
+ var peerConnection = this._startPeerConnection();
+ // Set the connection's PC.
+ this.connection.peerConnection = peerConnection;
+ if (this.connection.type === enums_1.ConnectionType.Media && options._stream) {
+ this._addTracksToConnection(options._stream, peerConnection);
+ }
+ // What do we need to do now?
+ if (options.originator) {
+ if (this.connection.type === enums_1.ConnectionType.Data) {
+ var dataConnection = this.connection;
+ var config = { ordered: !!options.reliable };
+ var dataChannel = peerConnection.createDataChannel(dataConnection.label, config);
+ dataConnection.initialize(dataChannel);
+ }
+ this._makeOffer();
+ }
+ else {
+ this.handleSDP("OFFER", options.sdp);
+ }
+ };
+ /** Start a PC. */
+ Negotiator.prototype._startPeerConnection = function () {
+ logger_1.default.log("Creating RTCPeerConnection.");
+ var peerConnection = new RTCPeerConnection(this.connection.provider.options.config);
+ this._setupListeners(peerConnection);
+ return peerConnection;
+ };
+ /** Set up various WebRTC listeners. */
+ Negotiator.prototype._setupListeners = function (peerConnection) {
+ var _this = this;
+ var peerId = this.connection.peer;
+ var connectionId = this.connection.connectionId;
+ var connectionType = this.connection.type;
+ var provider = this.connection.provider;
+ // ICE CANDIDATES.
+ logger_1.default.log("Listening for ICE candidates.");
+ peerConnection.onicecandidate = function (evt) {
+ if (!evt.candidate || !evt.candidate.candidate)
+ return;
+ logger_1.default.log("Received ICE candidates for " + peerId + ":", evt.candidate);
+ provider.socket.send({
+ type: enums_1.ServerMessageType.Candidate,
+ payload: {
+ candidate: evt.candidate,
+ type: connectionType,
+ connectionId: connectionId
+ },
+ dst: peerId
+ });
+ };
+ peerConnection.oniceconnectionstatechange = function () {
+ switch (peerConnection.iceConnectionState) {
+ case "failed":
+ logger_1.default.log("iceConnectionState is failed, closing connections to " +
+ peerId);
+ _this.connection.emit(enums_1.ConnectionEventType.Error, new Error("Negotiation of connection to " + peerId + " failed."));
+ _this.connection.close();
+ break;
+ case "closed":
+ logger_1.default.log("iceConnectionState is closed, closing connections to " +
+ peerId);
+ _this.connection.emit(enums_1.ConnectionEventType.Error, new Error("Connection to " + peerId + " closed."));
+ _this.connection.close();
+ break;
+ case "disconnected":
+ logger_1.default.log("iceConnectionState changed to disconnected on the connection with " +
+ peerId);
+ break;
+ case "completed":
+ peerConnection.onicecandidate = util_1.util.noop;
+ break;
+ }
+ _this.connection.emit(enums_1.ConnectionEventType.IceStateChanged, peerConnection.iceConnectionState);
+ };
+ // DATACONNECTION.
+ logger_1.default.log("Listening for data channel");
+ // Fired between offer and answer, so options should already be saved
+ // in the options hash.
+ peerConnection.ondatachannel = function (evt) {
+ logger_1.default.log("Received data channel");
+ var dataChannel = evt.channel;
+ var connection = (provider.getConnection(peerId, connectionId));
+ connection.initialize(dataChannel);
+ };
+ // MEDIACONNECTION.
+ logger_1.default.log("Listening for remote stream");
+ peerConnection.ontrack = function (evt) {
+ logger_1.default.log("Received remote stream");
+ var stream = evt.streams[0];
+ var connection = provider.getConnection(peerId, connectionId);
+ // @ts-ignore
+ if (connection.type === enums_1.ConnectionType.Media) {
+ var mediaConnection = connection;
+ _this._addStreamToMediaConnection(stream, mediaConnection);
+ }
+ };
+ };
+ Negotiator.prototype.cleanup = function () {
+ logger_1.default.log("Cleaning up PeerConnection to " + this.connection.peer);
+ var peerConnection = this.connection.peerConnection;
+ if (!peerConnection) {
+ return;
+ }
+ // @ts-ignore
+ this.connection.peerConnection = null;
+ //unsubscribe from all PeerConnection's events
+ peerConnection.onicecandidate = peerConnection.oniceconnectionstatechange = peerConnection.ondatachannel = peerConnection.ontrack = function () { };
+ var peerConnectionNotClosed = peerConnection.signalingState !== "closed";
+ var dataChannelNotClosed = false;
+ if (this.connection.type === enums_1.ConnectionType.Data) {
+ var dataConnection = this.connection;
+ var dataChannel = dataConnection.dataChannel;
+ if (dataChannel) {
+ dataChannelNotClosed = !!dataChannel.readyState && dataChannel.readyState !== "closed";
+ }
+ }
+ if (peerConnectionNotClosed || dataChannelNotClosed) {
+ peerConnection.close();
+ }
+ };
+ Negotiator.prototype._makeOffer = function () {
+ return __awaiter(this, void 0, void 0, function () {
+ var peerConnection, provider, offer, payload, dataConnection, err_2, err_1_1;
+ return __generator(this, function (_a) {
+ switch (_a.label) {
+ case 0:
+ peerConnection = this.connection.peerConnection;
+ provider = this.connection.provider;
+ _a.label = 1;
+ case 1:
+ _a.trys.push([1, 7, , 8]);
+ return [4 /*yield*/, peerConnection.createOffer(this.connection.options.constraints)];
+ case 2:
+ offer = _a.sent();
+ logger_1.default.log("Created offer.");
+ if (this.connection.options.sdpTransform && typeof this.connection.options.sdpTransform === 'function') {
+ offer.sdp = this.connection.options.sdpTransform(offer.sdp) || offer.sdp;
+ }
+ _a.label = 3;
+ case 3:
+ _a.trys.push([3, 5, , 6]);
+ return [4 /*yield*/, peerConnection.setLocalDescription(offer)];
+ case 4:
+ _a.sent();
+ logger_1.default.log("Set localDescription:", offer, "for:" + this.connection.peer);
+ payload = {
+ sdp: offer,
+ type: this.connection.type,
+ connectionId: this.connection.connectionId,
+ metadata: this.connection.metadata,
+ browser: util_1.util.browser
+ };
+ if (this.connection.type === enums_1.ConnectionType.Data) {
+ dataConnection = this.connection;
+ payload = __assign(__assign({}, payload), { label: dataConnection.label, reliable: dataConnection.reliable, serialization: dataConnection.serialization });
+ }
+ provider.socket.send({
+ type: enums_1.ServerMessageType.Offer,
+ payload: payload,
+ dst: this.connection.peer
+ });
+ return [3 /*break*/, 6];
+ case 5:
+ err_2 = _a.sent();
+ // TODO: investigate why _makeOffer is being called from the answer
+ if (err_2 !=
+ "OperationError: Failed to set local offer sdp: Called in wrong state: kHaveRemoteOffer") {
+ provider.emitError(enums_1.PeerErrorType.WebRTC, err_2);
+ logger_1.default.log("Failed to setLocalDescription, ", err_2);
+ }
+ return [3 /*break*/, 6];
+ case 6: return [3 /*break*/, 8];
+ case 7:
+ err_1_1 = _a.sent();
+ provider.emitError(enums_1.PeerErrorType.WebRTC, err_1_1);
+ logger_1.default.log("Failed to createOffer, ", err_1_1);
+ return [3 /*break*/, 8];
+ case 8: return [2 /*return*/];
+ }
+ });
+ });
+ };
+ Negotiator.prototype._makeAnswer = function () {
+ return __awaiter(this, void 0, void 0, function () {
+ var peerConnection, provider, answer, err_3, err_1_2;
+ return __generator(this, function (_a) {
+ switch (_a.label) {
+ case 0:
+ peerConnection = this.connection.peerConnection;
+ provider = this.connection.provider;
+ _a.label = 1;
+ case 1:
+ _a.trys.push([1, 7, , 8]);
+ return [4 /*yield*/, peerConnection.createAnswer()];
+ case 2:
+ answer = _a.sent();
+ logger_1.default.log("Created answer.");
+ if (this.connection.options.sdpTransform && typeof this.connection.options.sdpTransform === 'function') {
+ answer.sdp = this.connection.options.sdpTransform(answer.sdp) || answer.sdp;
+ }
+ _a.label = 3;
+ case 3:
+ _a.trys.push([3, 5, , 6]);
+ return [4 /*yield*/, peerConnection.setLocalDescription(answer)];
+ case 4:
+ _a.sent();
+ logger_1.default.log("Set localDescription:", answer, "for:" + this.connection.peer);
+ provider.socket.send({
+ type: enums_1.ServerMessageType.Answer,
+ payload: {
+ sdp: answer,
+ type: this.connection.type,
+ connectionId: this.connection.connectionId,
+ browser: util_1.util.browser
+ },
+ dst: this.connection.peer
+ });
+ return [3 /*break*/, 6];
+ case 5:
+ err_3 = _a.sent();
+ provider.emitError(enums_1.PeerErrorType.WebRTC, err_3);
+ logger_1.default.log("Failed to setLocalDescription, ", err_3);
+ return [3 /*break*/, 6];
+ case 6: return [3 /*break*/, 8];
+ case 7:
+ err_1_2 = _a.sent();
+ provider.emitError(enums_1.PeerErrorType.WebRTC, err_1_2);
+ logger_1.default.log("Failed to create answer, ", err_1_2);
+ return [3 /*break*/, 8];
+ case 8: return [2 /*return*/];
+ }
+ });
+ });
+ };
+ /** Handle an SDP. */
+ Negotiator.prototype.handleSDP = function (type, sdp) {
+ return __awaiter(this, void 0, void 0, function () {
+ var peerConnection, provider, self, err_4;
+ return __generator(this, function (_a) {
+ switch (_a.label) {
+ case 0:
+ sdp = new RTCSessionDescription(sdp);
+ peerConnection = this.connection.peerConnection;
+ provider = this.connection.provider;
+ logger_1.default.log("Setting remote description", sdp);
+ self = this;
+ _a.label = 1;
+ case 1:
+ _a.trys.push([1, 5, , 6]);
+ return [4 /*yield*/, peerConnection.setRemoteDescription(sdp)];
+ case 2:
+ _a.sent();
+ logger_1.default.log("Set remoteDescription:" + type + " for:" + this.connection.peer);
+ if (!(type === "OFFER")) return [3 /*break*/, 4];
+ return [4 /*yield*/, self._makeAnswer()];
+ case 3:
+ _a.sent();
+ _a.label = 4;
+ case 4: return [3 /*break*/, 6];
+ case 5:
+ err_4 = _a.sent();
+ provider.emitError(enums_1.PeerErrorType.WebRTC, err_4);
+ logger_1.default.log("Failed to setRemoteDescription, ", err_4);
+ return [3 /*break*/, 6];
+ case 6: return [2 /*return*/];
+ }
+ });
+ });
+ };
+ /** Handle a candidate. */
+ Negotiator.prototype.handleCandidate = function (ice) {
+ return __awaiter(this, void 0, void 0, function () {
+ var candidate, sdpMLineIndex, sdpMid, peerConnection, provider, err_5;
+ return __generator(this, function (_a) {
+ switch (_a.label) {
+ case 0:
+ logger_1.default.log("handleCandidate:", ice);
+ candidate = ice.candidate;
+ sdpMLineIndex = ice.sdpMLineIndex;
+ sdpMid = ice.sdpMid;
+ peerConnection = this.connection.peerConnection;
+ provider = this.connection.provider;
+ _a.label = 1;
+ case 1:
+ _a.trys.push([1, 3, , 4]);
+ return [4 /*yield*/, peerConnection.addIceCandidate(new RTCIceCandidate({
+ sdpMid: sdpMid,
+ sdpMLineIndex: sdpMLineIndex,
+ candidate: candidate
+ }))];
+ case 2:
+ _a.sent();
+ logger_1.default.log("Added ICE candidate for:" + this.connection.peer);
+ return [3 /*break*/, 4];
+ case 3:
+ err_5 = _a.sent();
+ provider.emitError(enums_1.PeerErrorType.WebRTC, err_5);
+ logger_1.default.log("Failed to handleCandidate, ", err_5);
+ return [3 /*break*/, 4];
+ case 4: return [2 /*return*/];
+ }
+ });
+ });
+ };
+ Negotiator.prototype._addTracksToConnection = function (stream, peerConnection) {
+ logger_1.default.log("add tracks from stream " + stream.id + " to peer connection");
+ if (!peerConnection.addTrack) {
+ return logger_1.default.error("Your browser does't support RTCPeerConnection#addTrack. Ignored.");
+ }
+ stream.getTracks().forEach(function (track) {
+ peerConnection.addTrack(track, stream);
+ });
+ };
+ Negotiator.prototype._addStreamToMediaConnection = function (stream, mediaConnection) {
+ logger_1.default.log("add stream " + stream.id + " to media connection " + mediaConnection.connectionId);
+ mediaConnection.addStream(stream);
+ };
+ return Negotiator;
+}());
+exports.Negotiator = Negotiator;
diff --git a/node_modules/peerjs/dist/peer.js b/node_modules/peerjs/dist/peer.js
new file mode 100644
index 0000000..8928729
--- /dev/null
+++ b/node_modules/peerjs/dist/peer.js
@@ -0,0 +1,519 @@
+"use strict";
+var __extends = (this && this.__extends) || (function () {
+ var extendStatics = function (d, b) {
+ extendStatics = Object.setPrototypeOf ||
+ ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+ function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
+ return extendStatics(d, b);
+ };
+ return function (d, b) {
+ if (typeof b !== "function" && b !== null)
+ throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
+ extendStatics(d, b);
+ function __() { this.constructor = d; }
+ d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+ };
+})();
+var __assign = (this && this.__assign) || function () {
+ __assign = Object.assign || function(t) {
+ for (var s, i = 1, n = arguments.length; i < n; i++) {
+ s = arguments[i];
+ for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
+ t[p] = s[p];
+ }
+ return t;
+ };
+ return __assign.apply(this, arguments);
+};
+var __importDefault = (this && this.__importDefault) || function (mod) {
+ return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Peer = void 0;
+var eventemitter3_1 = require("eventemitter3");
+var util_1 = require("./util");
+var logger_1 = __importDefault(require("./logger"));
+var socket_1 = require("./socket");
+var mediaconnection_1 = require("./mediaconnection");
+var dataconnection_1 = require("./dataconnection");
+var enums_1 = require("./enums");
+var api_1 = require("./api");
+var PeerOptions = /** @class */ (function () {
+ function PeerOptions() {
+ }
+ return PeerOptions;
+}());
+/**
+ * A peer who can initiate connections with other peers.
+ */
+var Peer = /** @class */ (function (_super) {
+ __extends(Peer, _super);
+ function Peer(id, options) {
+ var _this = _super.call(this) || this;
+ _this._id = null;
+ _this._lastServerId = null;
+ // States.
+ _this._destroyed = false; // Connections have been killed
+ _this._disconnected = false; // Connection to PeerServer killed but P2P connections still active
+ _this._open = false; // Sockets and such are not yet open.
+ _this._connections = new Map(); // All connections for this peer.
+ _this._lostMessages = new Map(); // src => [list of messages]
+ var userId;
+ // Deal with overloading
+ if (id && id.constructor == Object) {
+ options = id;
+ }
+ else if (id) {
+ userId = id.toString();
+ }
+ // Configurize options
+ options = __assign({ debug: 0, host: util_1.util.CLOUD_HOST, port: util_1.util.CLOUD_PORT, path: "/", key: Peer.DEFAULT_KEY, token: util_1.util.randomToken(), config: util_1.util.defaultConfig }, options);
+ _this._options = options;
+ // Detect relative URL host.
+ if (_this._options.host === "/") {
+ _this._options.host = window.location.hostname;
+ }
+ // Set path correctly.
+ if (_this._options.path) {
+ if (_this._options.path[0] !== "/") {
+ _this._options.path = "/" + _this._options.path;
+ }
+ if (_this._options.path[_this._options.path.length - 1] !== "/") {
+ _this._options.path += "/";
+ }
+ }
+ // Set whether we use SSL to same as current host
+ if (_this._options.secure === undefined && _this._options.host !== util_1.util.CLOUD_HOST) {
+ _this._options.secure = util_1.util.isSecure();
+ }
+ else if (_this._options.host == util_1.util.CLOUD_HOST) {
+ _this._options.secure = true;
+ }
+ // Set a custom log function if present
+ if (_this._options.logFunction) {
+ logger_1.default.setLogFunction(_this._options.logFunction);
+ }
+ logger_1.default.logLevel = _this._options.debug || 0;
+ _this._api = new api_1.API(options);
+ _this._socket = _this._createServerConnection();
+ // Sanity checks
+ // Ensure WebRTC supported
+ if (!util_1.util.supports.audioVideo && !util_1.util.supports.data) {
+ _this._delayedAbort(enums_1.PeerErrorType.BrowserIncompatible, "The current browser does not support WebRTC");
+ return _this;
+ }
+ // Ensure alphanumeric id
+ if (!!userId && !util_1.util.validateId(userId)) {
+ _this._delayedAbort(enums_1.PeerErrorType.InvalidID, "ID \"" + userId + "\" is invalid");
+ return _this;
+ }
+ if (userId) {
+ _this._initialize(userId);
+ }
+ else {
+ _this._api.retrieveId()
+ .then(function (id) { return _this._initialize(id); })
+ .catch(function (error) { return _this._abort(enums_1.PeerErrorType.ServerError, error); });
+ }
+ return _this;
+ }
+ Object.defineProperty(Peer.prototype, "id", {
+ get: function () {
+ return this._id;
+ },
+ enumerable: false,
+ configurable: true
+ });
+ Object.defineProperty(Peer.prototype, "options", {
+ get: function () {
+ return this._options;
+ },
+ enumerable: false,
+ configurable: true
+ });
+ Object.defineProperty(Peer.prototype, "open", {
+ get: function () {
+ return this._open;
+ },
+ enumerable: false,
+ configurable: true
+ });
+ Object.defineProperty(Peer.prototype, "socket", {
+ get: function () {
+ return this._socket;
+ },
+ enumerable: false,
+ configurable: true
+ });
+ Object.defineProperty(Peer.prototype, "connections", {
+ /**
+ * @deprecated
+ * Return type will change from Object to Map<string,[]>
+ */
+ get: function () {
+ var plainConnections = Object.create(null);
+ // @ts-ignore
+ for (var _i = 0, _a = this._connections; _i < _a.length; _i++) {
+ var _b = _a[_i], k = _b[0], v = _b[1];
+ plainConnections[k] = v;
+ }
+ return plainConnections;
+ },
+ enumerable: false,
+ configurable: true
+ });
+ Object.defineProperty(Peer.prototype, "destroyed", {
+ get: function () {
+ return this._destroyed;
+ },
+ enumerable: false,
+ configurable: true
+ });
+ Object.defineProperty(Peer.prototype, "disconnected", {
+ get: function () {
+ return this._disconnected;
+ },
+ enumerable: false,
+ configurable: true
+ });
+ Peer.prototype._createServerConnection = function () {
+ var _this = this;
+ var socket = new socket_1.Socket(this._options.secure, this._options.host, this._options.port, this._options.path, this._options.key, this._options.pingInterval);
+ socket.on(enums_1.SocketEventType.Message, function (data) {
+ _this._handleMessage(data);
+ });
+ socket.on(enums_1.SocketEventType.Error, function (error) {
+ _this._abort(enums_1.PeerErrorType.SocketError, error);
+ });
+ socket.on(enums_1.SocketEventType.Disconnected, function () {
+ if (_this.disconnected) {
+ return;
+ }
+ _this.emitError(enums_1.PeerErrorType.Network, "Lost connection to server.");
+ _this.disconnect();
+ });
+ socket.on(enums_1.SocketEventType.Close, function () {
+ if (_this.disconnected) {
+ return;
+ }
+ _this._abort(enums_1.PeerErrorType.SocketClosed, "Underlying socket is already closed.");
+ });
+ return socket;
+ };
+ /** Initialize a connection with the server. */
+ Peer.prototype._initialize = function (id) {
+ this._id = id;
+ this.socket.start(id, this._options.token);
+ };
+ /** Handles messages from the server. */
+ Peer.prototype._handleMessage = function (message) {
+ var type = message.type;
+ var payload = message.payload;
+ var peerId = message.src;
+ switch (type) {
+ case enums_1.ServerMessageType.Open: // The connection to the server is open.
+ this._lastServerId = this.id;
+ this._open = true;
+ this.emit(enums_1.PeerEventType.Open, this.id);
+ break;
+ case enums_1.ServerMessageType.Error: // Server error.
+ this._abort(enums_1.PeerErrorType.ServerError, payload.msg);
+ break;
+ case enums_1.ServerMessageType.IdTaken: // The selected ID is taken.
+ this._abort(enums_1.PeerErrorType.UnavailableID, "ID \"" + this.id + "\" is taken");
+ break;
+ case enums_1.ServerMessageType.InvalidKey: // The given API key cannot be found.
+ this._abort(enums_1.PeerErrorType.InvalidKey, "API KEY \"" + this._options.key + "\" is invalid");
+ break;
+ case enums_1.ServerMessageType.Leave: // Another peer has closed its connection to this peer.
+ logger_1.default.log("Received leave message from " + peerId);
+ this._cleanupPeer(peerId);
+ this._connections.delete(peerId);
+ break;
+ case enums_1.ServerMessageType.Expire: // The offer sent to a peer has expired without response.
+ this.emitError(enums_1.PeerErrorType.PeerUnavailable, "Could not connect to peer " + peerId);
+ break;
+ case enums_1.ServerMessageType.Offer: {
+ // we should consider switching this to CALL/CONNECT, but this is the least breaking option.
+ var connectionId = payload.connectionId;
+ var connection = this.getConnection(peerId, connectionId);
+ if (connection) {
+ connection.close();
+ logger_1.default.warn("Offer received for existing Connection ID:" + connectionId);
+ }
+ // Create a new connection.
+ if (payload.type === enums_1.ConnectionType.Media) {
+ connection = new mediaconnection_1.MediaConnection(peerId, this, {
+ connectionId: connectionId,
+ _payload: payload,
+ metadata: payload.metadata
+ });
+ this._addConnection(peerId, connection);
+ this.emit(enums_1.PeerEventType.Call, connection);
+ }
+ else if (payload.type === enums_1.ConnectionType.Data) {
+ connection = new dataconnection_1.DataConnection(peerId, this, {
+ connectionId: connectionId,
+ _payload: payload,
+ metadata: payload.metadata,
+ label: payload.label,
+ serialization: payload.serialization,
+ reliable: payload.reliable
+ });
+ this._addConnection(peerId, connection);
+ this.emit(enums_1.PeerEventType.Connection, connection);
+ }
+ else {
+ logger_1.default.warn("Received malformed connection type:" + payload.type);
+ return;
+ }
+ // Find messages.
+ var messages = this._getMessages(connectionId);
+ for (var _i = 0, messages_1 = messages; _i < messages_1.length; _i++) {
+ var message_1 = messages_1[_i];
+ connection.handleMessage(message_1);
+ }
+ break;
+ }
+ default: {
+ if (!payload) {
+ logger_1.default.warn("You received a malformed message from " + peerId + " of type " + type);
+ return;
+ }
+ var connectionId = payload.connectionId;
+ var connection = this.getConnection(peerId, connectionId);
+ if (connection && connection.peerConnection) {
+ // Pass it on.
+ connection.handleMessage(message);
+ }
+ else if (connectionId) {
+ // Store for possible later use
+ this._storeMessage(connectionId, message);
+ }
+ else {
+ logger_1.default.warn("You received an unrecognized message:", message);
+ }
+ break;
+ }
+ }
+ };
+ /** Stores messages without a set up connection, to be claimed later. */
+ Peer.prototype._storeMessage = function (connectionId, message) {
+ if (!this._lostMessages.has(connectionId)) {
+ this._lostMessages.set(connectionId, []);
+ }
+ // @ts-ignore
+ this._lostMessages.get(connectionId).push(message);
+ };
+ /** Retrieve messages from lost message store */
+ //TODO Change it to private
+ Peer.prototype._getMessages = function (connectionId) {
+ var messages = this._lostMessages.get(connectionId);
+ if (messages) {
+ this._lostMessages.delete(connectionId);
+ return messages;
+ }
+ return [];
+ };
+ /**
+ * Returns a DataConnection to the specified peer. See documentation for a
+ * complete list of options.
+ */
+ Peer.prototype.connect = function (peer, options) {
+ if (options === void 0) { options = {}; }
+ if (this.disconnected) {
+ logger_1.default.warn("You cannot connect to a new Peer because you called " +
+ ".disconnect() on this Peer and ended your connection with the " +
+ "server. You can create a new Peer to reconnect, or call reconnect " +
+ "on this peer if you believe its ID to still be available.");
+ this.emitError(enums_1.PeerErrorType.Disconnected, "Cannot connect to new Peer after disconnecting from server.");
+ // @ts-ignore
+ return;
+ }
+ var dataConnection = new dataconnection_1.DataConnection(peer, this, options);
+ this._addConnection(peer, dataConnection);
+ return dataConnection;
+ };
+ /**
+ * Returns a MediaConnection to the specified peer. See documentation for a
+ * complete list of options.
+ */
+ Peer.prototype.call = function (peer, stream, options) {
+ if (options === void 0) { options = {}; }
+ if (this.disconnected) {
+ logger_1.default.warn("You cannot connect to a new Peer because you called " +
+ ".disconnect() on this Peer and ended your connection with the " +
+ "server. You can create a new Peer to reconnect.");
+ this.emitError(enums_1.PeerErrorType.Disconnected, "Cannot connect to new Peer after disconnecting from server.");
+ // @ts-ignore
+ return;
+ }
+ if (!stream) {
+ logger_1.default.error("To call a peer, you must provide a stream from your browser's `getUserMedia`.");
+ // @ts-ignore
+ return;
+ }
+ options._stream = stream;
+ var mediaConnection = new mediaconnection_1.MediaConnection(peer, this, options);
+ this._addConnection(peer, mediaConnection);
+ return mediaConnection;
+ };
+ /** Add a data/media connection to this peer. */
+ Peer.prototype._addConnection = function (peerId, connection) {
+ logger_1.default.log("add connection " + connection.type + ":" + connection.connectionId + " to peerId:" + peerId);
+ if (!this._connections.has(peerId)) {
+ this._connections.set(peerId, []);
+ }
+ // @ts-ignore
+ this._connections.get(peerId).push(connection);
+ };
+ //TODO should be private
+ Peer.prototype._removeConnection = function (connection) {
+ var connections = this._connections.get(connection.peer);
+ if (connections) {
+ var index = connections.indexOf(connection);
+ if (index !== -1) {
+ connections.splice(index, 1);
+ }
+ }
+ //remove from lost messages
+ this._lostMessages.delete(connection.connectionId);
+ };
+ /** Retrieve a data/media connection for this peer. */
+ Peer.prototype.getConnection = function (peerId, connectionId) {
+ var connections = this._connections.get(peerId);
+ if (!connections) {
+ return null;
+ }
+ for (var _i = 0, connections_1 = connections; _i < connections_1.length; _i++) {
+ var connection = connections_1[_i];
+ if (connection.connectionId === connectionId) {
+ return connection;
+ }
+ }
+ return null;
+ };
+ Peer.prototype._delayedAbort = function (type, message) {
+ var _this = this;
+ setTimeout(function () {
+ _this._abort(type, message);
+ }, 0);
+ };
+ /**
+ * Emits an error message and destroys the Peer.
+ * The Peer is not destroyed if it's in a disconnected state, in which case
+ * it retains its disconnected state and its existing connections.
+ */
+ Peer.prototype._abort = function (type, message) {
+ logger_1.default.error("Aborting!");
+ this.emitError(type, message);
+ if (!this._lastServerId) {
+ this.destroy();
+ }
+ else {
+ this.disconnect();
+ }
+ };
+ /** Emits a typed error message. */
+ Peer.prototype.emitError = function (type, err) {
+ logger_1.default.error("Error:", err);
+ var error;
+ if (typeof err === "string") {
+ error = new Error(err);
+ }
+ else {
+ error = err;
+ }
+ error.type = type;
+ this.emit(enums_1.PeerEventType.Error, error);
+ };
+ /**
+ * Destroys the Peer: closes all active connections as well as the connection
+ * to the server.
+ * Warning: The peer can no longer create or accept connections after being
+ * destroyed.
+ */
+ Peer.prototype.destroy = function () {
+ if (this.destroyed) {
+ return;
+ }
+ logger_1.default.log("Destroy peer with ID:" + this.id);
+ this.disconnect();
+ this._cleanup();
+ this._destroyed = true;
+ this.emit(enums_1.PeerEventType.Close);
+ };
+ /** Disconnects every connection on this peer. */
+ Peer.prototype._cleanup = function () {
+ // @ts-ignore
+ for (var _i = 0, _a = this._connections.keys(); _i < _a.length; _i++) {
+ var peerId = _a[_i];
+ this._cleanupPeer(peerId);
+ this._connections.delete(peerId);
+ }
+ this.socket.removeAllListeners();
+ };
+ /** Closes all connections to this peer. */
+ Peer.prototype._cleanupPeer = function (peerId) {
+ var connections = this._connections.get(peerId);
+ if (!connections)
+ return;
+ for (var _i = 0, connections_2 = connections; _i < connections_2.length; _i++) {
+ var connection = connections_2[_i];
+ connection.close();
+ }
+ };
+ /**
+ * Disconnects the Peer's connection to the PeerServer. Does not close any
+ * active connections.
+ * Warning: The peer can no longer create or accept connections after being
+ * disconnected. It also cannot reconnect to the server.
+ */
+ Peer.prototype.disconnect = function () {
+ if (this.disconnected) {
+ return;
+ }
+ var currentId = this.id;
+ logger_1.default.log("Disconnect peer with ID:" + currentId);
+ this._disconnected = true;
+ this._open = false;
+ this.socket.close();
+ this._lastServerId = currentId;
+ this._id = null;
+ this.emit(enums_1.PeerEventType.Disconnected, currentId);
+ };
+ /** Attempts to reconnect with the same ID. */
+ Peer.prototype.reconnect = function () {
+ if (this.disconnected && !this.destroyed) {
+ logger_1.default.log("Attempting reconnection to server with ID " + this._lastServerId);
+ this._disconnected = false;
+ this._initialize(this._lastServerId);
+ }
+ else if (this.destroyed) {
+ throw new Error("This peer cannot reconnect to the server. It has already been destroyed.");
+ }
+ else if (!this.disconnected && !this.open) {
+ // Do nothing. We're still connecting the first time.
+ logger_1.default.error("In a hurry? We're still trying to make the initial connection!");
+ }
+ else {
+ throw new Error("Peer " + this.id + " cannot reconnect because it is not disconnected from the server!");
+ }
+ };
+ /**
+ * Get a list of available peer IDs. If you're running your own server, you'll
+ * want to set allow_discovery: true in the PeerServer options. If you're using
+ * the cloud server, email team@peerjs.com to get the functionality enabled for
+ * your key.
+ */
+ Peer.prototype.listAllPeers = function (cb) {
+ var _this = this;
+ if (cb === void 0) { cb = function (_) { }; }
+ this._api.listAllPeers()
+ .then(function (peers) { return cb(peers); })
+ .catch(function (error) { return _this._abort(enums_1.PeerErrorType.ServerError, error); });
+ };
+ Peer.DEFAULT_KEY = "peerjs";
+ return Peer;
+}(eventemitter3_1.EventEmitter));
+exports.Peer = Peer;
diff --git a/node_modules/peerjs/dist/peerjs.js b/node_modules/peerjs/dist/peerjs.js
deleted file mode 100644
index b902845..0000000
--- a/node_modules/peerjs/dist/peerjs.js
+++ /dev/null
@@ -1,10318 +0,0 @@
-// modules are defined as an array
-// [ module function, map of requires ]
-//
-// map of requires is short require name -> numeric require
-//
-// anything defined in a previous bundle is accessed via the
-// orig method which is the require for previous bundles
-parcelRequire = (function (modules, cache, entry, globalName) {
- // Save the require from previous bundle to this closure if any
- var previousRequire = typeof parcelRequire === 'function' && parcelRequire;
- var nodeRequire = typeof require === 'function' && require;
-
- function newRequire(name, jumped) {
- if (!cache[name]) {
- if (!modules[name]) {
- // if we cannot find the module within our internal map or
- // cache jump to the current global require ie. the last bundle
- // that was added to the page.
- var currentRequire = typeof parcelRequire === 'function' && parcelRequire;
- if (!jumped && currentRequire) {
- return currentRequire(name, true);
- }
-
- // If there are other bundles on this page the require from the
- // previous one is saved to 'previousRequire'. Repeat this as
- // many times as there are bundles until the module is found or
- // we exhaust the require chain.
- if (previousRequire) {
- return previousRequire(name, true);
- }
-
- // Try the node require function if it exists.
- if (nodeRequire && typeof name === 'string') {
- return nodeRequire(name);
- }
-
- var err = new Error('Cannot find module \'' + name + '\'');
- err.code = 'MODULE_NOT_FOUND';
- throw err;
- }
-
- localRequire.resolve = resolve;
- localRequire.cache = {};
-
- var module = cache[name] = new newRequire.Module(name);
-
- modules[name][0].call(module.exports, localRequire, module, module.exports, this);
- }
-
- return cache[name].exports;
-
- function localRequire(x){
- return newRequire(localRequire.resolve(x));
- }
-
- function resolve(x){
- return modules[name][1][x] || x;
- }
- }
-
- function Module(moduleName) {
- this.id = moduleName;
- this.bundle = newRequire;
- this.exports = {};
- }
-
- newRequire.isParcelRequire = true;
- newRequire.Module = Module;
- newRequire.modules = modules;
- newRequire.cache = cache;
- newRequire.parent = previousRequire;
- newRequire.register = function (id, exports) {
- modules[id] = [function (require, module) {
- module.exports = exports;
- }, {}];
- };
-
- var error;
- for (var i = 0; i < entry.length; i++) {
- try {
- newRequire(entry[i]);
- } catch (e) {
- // Save first error but execute all entries
- if (!error) {
- error = e;
- }
- }
- }
-
- if (entry.length) {
- // Expose entry point to Node, AMD or browser globals
- // Based on https://github.com/ForbesLindesay/umd/blob/master/template.js
- var mainExports = newRequire(entry[entry.length - 1]);
-
- // CommonJS
- if (typeof exports === "object" && typeof module !== "undefined") {
- module.exports = mainExports;
-
- // RequireJS
- } else if (typeof define === "function" && define.amd) {
- define(function () {
- return mainExports;
- });
-
- // <script>
- } else if (globalName) {
- this[globalName] = mainExports;
- }
- }
-
- // Override the current require with this new one
- parcelRequire = newRequire;
-
- if (error) {
- // throw error from earlier, _after updating parcelRequire_
- throw error;
- }
-
- return newRequire;
-})({"EgBh":[function(require,module,exports) {
-var binaryFeatures = {};
-binaryFeatures.useBlobBuilder = (function () {
- try {
- new Blob([]);
- return false;
- } catch (e) {
- return true;
- }
-})();
-
-binaryFeatures.useArrayBufferView = !binaryFeatures.useBlobBuilder && (function () {
- try {
- return (new Blob([new Uint8Array([])])).size === 0;
- } catch (e) {
- return true;
- }
-})();
-
-module.exports.binaryFeatures = binaryFeatures;
-var BlobBuilder = module.exports.BlobBuilder;
-if (typeof window !== 'undefined') {
- BlobBuilder = module.exports.BlobBuilder = window.WebKitBlobBuilder ||
- window.MozBlobBuilder || window.MSBlobBuilder || window.BlobBuilder;
-}
-
-function BufferBuilder () {
- this._pieces = [];
- this._parts = [];
-}
-
-BufferBuilder.prototype.append = function (data) {
- if (typeof data === 'number') {
- this._pieces.push(data);
- } else {
- this.flush();
- this._parts.push(data);
- }
-};
-
-BufferBuilder.prototype.flush = function () {
- if (this._pieces.length > 0) {
- var buf = new Uint8Array(this._pieces);
- if (!binaryFeatures.useArrayBufferView) {
- buf = buf.buffer;
- }
- this._parts.push(buf);
- this._pieces = [];
- }
-};
-
-BufferBuilder.prototype.getBuffer = function () {
- this.flush();
- if (binaryFeatures.useBlobBuilder) {
- var builder = new BlobBuilder();
- for (var i = 0, ii = this._parts.length; i < ii; i++) {
- builder.append(this._parts[i]);
- }
- return builder.getBlob();
- } else {
- return new Blob(this._parts);
- }
-};
-
-module.exports.BufferBuilder = BufferBuilder;
-
-},{}],"kdPp":[function(require,module,exports) {
-var BufferBuilder = require('./bufferbuilder').BufferBuilder;
-var binaryFeatures = require('./bufferbuilder').binaryFeatures;
-
-var BinaryPack = {
- unpack: function (data) {
- var unpacker = new Unpacker(data);
- return unpacker.unpack();
- },
- pack: function (data) {
- var packer = new Packer();
- packer.pack(data);
- var buffer = packer.getBuffer();
- return buffer;
- }
-};
-
-module.exports = BinaryPack;
-
-function Unpacker (data) {
- // Data is ArrayBuffer
- this.index = 0;
- this.dataBuffer = data;
- this.dataView = new Uint8Array(this.dataBuffer);
- this.length = this.dataBuffer.byteLength;
-}
-
-Unpacker.prototype.unpack = function () {
- var type = this.unpack_uint8();
- if (type < 0x80) {
- return type;
- } else if ((type ^ 0xe0) < 0x20) {
- return (type ^ 0xe0) - 0x20;
- }
-
- var size;
- if ((size = type ^ 0xa0) <= 0x0f) {
- return this.unpack_raw(size);
- } else if ((size = type ^ 0xb0) <= 0x0f) {
- return this.unpack_string(size);
- } else if ((size = type ^ 0x90) <= 0x0f) {
- return this.unpack_array(size);
- } else if ((size = type ^ 0x80) <= 0x0f) {
- return this.unpack_map(size);
- }
-
- switch (type) {
- case 0xc0:
- return null;
- case 0xc1:
- return undefined;
- case 0xc2:
- return false;
- case 0xc3:
- return true;
- case 0xca:
- return this.unpack_float();
- case 0xcb:
- return this.unpack_double();
- case 0xcc:
- return this.unpack_uint8();
- case 0xcd:
- return this.unpack_uint16();
- case 0xce:
- return this.unpack_uint32();
- case 0xcf:
- return this.unpack_uint64();
- case 0xd0:
- return this.unpack_int8();
- case 0xd1:
- return this.unpack_int16();
- case 0xd2:
- return this.unpack_int32();
- case 0xd3:
- return this.unpack_int64();
- case 0xd4:
- return undefined;
- case 0xd5:
- return undefined;
- case 0xd6:
- return undefined;
- case 0xd7:
- return undefined;
- case 0xd8:
- size = this.unpack_uint16();
- return this.unpack_string(size);
- case 0xd9:
- size = this.unpack_uint32();
- return this.unpack_string(size);
- case 0xda:
- size = this.unpack_uint16();
- return this.unpack_raw(size);
- case 0xdb:
- size = this.unpack_uint32();
- return this.unpack_raw(size);
- case 0xdc:
- size = this.unpack_uint16();
- return this.unpack_array(size);
- case 0xdd:
- size = this.unpack_uint32();
- return this.unpack_array(size);
- case 0xde:
- size = this.unpack_uint16();
- return this.unpack_map(size);
- case 0xdf:
- size = this.unpack_uint32();
- return this.unpack_map(size);
- }
-};
-
-Unpacker.prototype.unpack_uint8 = function () {
- var byte = this.dataView[this.index] & 0xff;
- this.index++;
- return byte;
-};
-
-Unpacker.prototype.unpack_uint16 = function () {
- var bytes = this.read(2);
- var uint16 =
- ((bytes[0] & 0xff) * 256) + (bytes[1] & 0xff);
- this.index += 2;
- return uint16;
-};
-
-Unpacker.prototype.unpack_uint32 = function () {
- var bytes = this.read(4);
- var uint32 =
- ((bytes[0] * 256 +
- bytes[1]) * 256 +
- bytes[2]) * 256 +
- bytes[3];
- this.index += 4;
- return uint32;
-};
-
-Unpacker.prototype.unpack_uint64 = function () {
- var bytes = this.read(8);
- var uint64 =
- ((((((bytes[0] * 256 +
- bytes[1]) * 256 +
- bytes[2]) * 256 +
- bytes[3]) * 256 +
- bytes[4]) * 256 +
- bytes[5]) * 256 +
- bytes[6]) * 256 +
- bytes[7];
- this.index += 8;
- return uint64;
-};
-
-Unpacker.prototype.unpack_int8 = function () {
- var uint8 = this.unpack_uint8();
- return (uint8 < 0x80) ? uint8 : uint8 - (1 << 8);
-};
-
-Unpacker.prototype.unpack_int16 = function () {
- var uint16 = this.unpack_uint16();
- return (uint16 < 0x8000) ? uint16 : uint16 - (1 << 16);
-};
-
-Unpacker.prototype.unpack_int32 = function () {
- var uint32 = this.unpack_uint32();
- return (uint32 < Math.pow(2, 31)) ? uint32
- : uint32 - Math.pow(2, 32);
-};
-
-Unpacker.prototype.unpack_int64 = function () {
- var uint64 = this.unpack_uint64();
- return (uint64 < Math.pow(2, 63)) ? uint64
- : uint64 - Math.pow(2, 64);
-};
-
-Unpacker.prototype.unpack_raw = function (size) {
- if (this.length < this.index + size) {
- throw new Error('BinaryPackFailure: index is out of range' +
- ' ' + this.index + ' ' + size + ' ' + this.length);
- }
- var buf = this.dataBuffer.slice(this.index, this.index + size);
- this.index += size;
-
- // buf = util.bufferToString(buf);
-
- return buf;
-};
-
-Unpacker.prototype.unpack_string = function (size) {
- var bytes = this.read(size);
- var i = 0;
- var str = '';
- var c;
- var code;
-
- while (i < size) {
- c = bytes[i];
- if (c < 128) {
- str += String.fromCharCode(c);
- i++;
- } else if ((c ^ 0xc0) < 32) {
- code = ((c ^ 0xc0) << 6) | (bytes[i + 1] & 63);
- str += String.fromCharCode(code);
- i += 2;
- } else {
- code = ((c & 15) << 12) | ((bytes[i + 1] & 63) << 6) |
- (bytes[i + 2] & 63);
- str += String.fromCharCode(code);
- i += 3;
- }
- }
-
- this.index += size;
- return str;
-};
-
-Unpacker.prototype.unpack_array = function (size) {
- var objects = new Array(size);
- for (var i = 0; i < size; i++) {
- objects[i] = this.unpack();
- }
- return objects;
-};
-
-Unpacker.prototype.unpack_map = function (size) {
- var map = {};
- for (var i = 0; i < size; i++) {
- var key = this.unpack();
- var value = this.unpack();
- map[key] = value;
- }
- return map;
-};
-
-Unpacker.prototype.unpack_float = function () {
- var uint32 = this.unpack_uint32();
- var sign = uint32 >> 31;
- var exp = ((uint32 >> 23) & 0xff) - 127;
- var fraction = (uint32 & 0x7fffff) | 0x800000;
- return (sign === 0 ? 1 : -1) *
- fraction * Math.pow(2, exp - 23);
-};
-
-Unpacker.prototype.unpack_double = function () {
- var h32 = this.unpack_uint32();
- var l32 = this.unpack_uint32();
- var sign = h32 >> 31;
- var exp = ((h32 >> 20) & 0x7ff) - 1023;
- var hfrac = (h32 & 0xfffff) | 0x100000;
- var frac = hfrac * Math.pow(2, exp - 20) +
- l32 * Math.pow(2, exp - 52);
- return (sign === 0 ? 1 : -1) * frac;
-};
-
-Unpacker.prototype.read = function (length) {
- var j = this.index;
- if (j + length <= this.length) {
- return this.dataView.subarray(j, j + length);
- } else {
- throw new Error('BinaryPackFailure: read index out of range');
- }
-};
-
-function Packer () {
- this.bufferBuilder = new BufferBuilder();
-}
-
-Packer.prototype.getBuffer = function () {
- return this.bufferBuilder.getBuffer();
-};
-
-Packer.prototype.pack = function (value) {
- var type = typeof (value);
- if (type === 'string') {
- this.pack_string(value);
- } else if (type === 'number') {
- if (Math.floor(value) === value) {
- this.pack_integer(value);
- } else {
- this.pack_double(value);
- }
- } else if (type === 'boolean') {
- if (value === true) {
- this.bufferBuilder.append(0xc3);
- } else if (value === false) {
- this.bufferBuilder.append(0xc2);
- }
- } else if (type === 'undefined') {
- this.bufferBuilder.append(0xc0);
- } else if (type === 'object') {
- if (value === null) {
- this.bufferBuilder.append(0xc0);
- } else {
- var constructor = value.constructor;
- if (constructor == Array) {
- this.pack_array(value);
- } else if (constructor == Blob || constructor == File || value instanceof Blob || value instanceof File) {
- this.pack_bin(value);
- } else if (constructor == ArrayBuffer) {
- if (binaryFeatures.useArrayBufferView) {
- this.pack_bin(new Uint8Array(value));
- } else {
- this.pack_bin(value);
- }
- } else if ('BYTES_PER_ELEMENT' in value) {
- if (binaryFeatures.useArrayBufferView) {
- this.pack_bin(new Uint8Array(value.buffer));
- } else {
- this.pack_bin(value.buffer);
- }
- } else if ((constructor == Object) || (constructor.toString().startsWith('class'))) {
- this.pack_object(value);
- } else if (constructor == Date) {
- this.pack_string(value.toString());
- } else if (typeof value.toBinaryPack === 'function') {
- this.bufferBuilder.append(value.toBinaryPack());
- } else {
- throw new Error('Type "' + constructor.toString() + '" not yet supported');
- }
- }
- } else {
- throw new Error('Type "' + type + '" not yet supported');
- }
- this.bufferBuilder.flush();
-};
-
-Packer.prototype.pack_bin = function (blob) {
- var length = blob.length || blob.byteLength || blob.size;
- if (length <= 0x0f) {
- this.pack_uint8(0xa0 + length);
- } else if (length <= 0xffff) {
- this.bufferBuilder.append(0xda);
- this.pack_uint16(length);
- } else if (length <= 0xffffffff) {
- this.bufferBuilder.append(0xdb);
- this.pack_uint32(length);
- } else {
- throw new Error('Invalid length');
- }
- this.bufferBuilder.append(blob);
-};
-
-Packer.prototype.pack_string = function (str) {
- var length = utf8Length(str);
-
- if (length <= 0x0f) {
- this.pack_uint8(0xb0 + length);
- } else if (length <= 0xffff) {
- this.bufferBuilder.append(0xd8);
- this.pack_uint16(length);
- } else if (length <= 0xffffffff) {
- this.bufferBuilder.append(0xd9);
- this.pack_uint32(length);
- } else {
- throw new Error('Invalid length');
- }
- this.bufferBuilder.append(str);
-};
-
-Packer.prototype.pack_array = function (ary) {
- var length = ary.length;
- if (length <= 0x0f) {
- this.pack_uint8(0x90 + length);
- } else if (length <= 0xffff) {
- this.bufferBuilder.append(0xdc);
- this.pack_uint16(length);
- } else if (length <= 0xffffffff) {
- this.bufferBuilder.append(0xdd);
- this.pack_uint32(length);
- } else {
- throw new Error('Invalid length');
- }
- for (var i = 0; i < length; i++) {
- this.pack(ary[i]);
- }
-};
-
-Packer.prototype.pack_integer = function (num) {
- if (num >= -0x20 && num <= 0x7f) {
- this.bufferBuilder.append(num & 0xff);
- } else if (num >= 0x00 && num <= 0xff) {
- this.bufferBuilder.append(0xcc);
- this.pack_uint8(num);
- } else if (num >= -0x80 && num <= 0x7f) {
- this.bufferBuilder.append(0xd0);
- this.pack_int8(num);
- } else if (num >= 0x0000 && num <= 0xffff) {
- this.bufferBuilder.append(0xcd);
- this.pack_uint16(num);
- } else if (num >= -0x8000 && num <= 0x7fff) {
- this.bufferBuilder.append(0xd1);
- this.pack_int16(num);
- } else if (num >= 0x00000000 && num <= 0xffffffff) {
- this.bufferBuilder.append(0xce);
- this.pack_uint32(num);
- } else if (num >= -0x80000000 && num <= 0x7fffffff) {
- this.bufferBuilder.append(0xd2);
- this.pack_int32(num);
- } else if (num >= -0x8000000000000000 && num <= 0x7FFFFFFFFFFFFFFF) {
- this.bufferBuilder.append(0xd3);
- this.pack_int64(num);
- } else if (num >= 0x0000000000000000 && num <= 0xFFFFFFFFFFFFFFFF) {
- this.bufferBuilder.append(0xcf);
- this.pack_uint64(num);
- } else {
- throw new Error('Invalid integer');
- }
-};
-
-Packer.prototype.pack_double = function (num) {
- var sign = 0;
- if (num < 0) {
- sign = 1;
- num = -num;
- }
- var exp = Math.floor(Math.log(num) / Math.LN2);
- var frac0 = num / Math.pow(2, exp) - 1;
- var frac1 = Math.floor(frac0 * Math.pow(2, 52));
- var b32 = Math.pow(2, 32);
- var h32 = (sign << 31) | ((exp + 1023) << 20) |
- (frac1 / b32) & 0x0fffff;
- var l32 = frac1 % b32;
- this.bufferBuilder.append(0xcb);
- this.pack_int32(h32);
- this.pack_int32(l32);
-};
-
-Packer.prototype.pack_object = function (obj) {
- var keys = Object.keys(obj);
- var length = keys.length;
- if (length <= 0x0f) {
- this.pack_uint8(0x80 + length);
- } else if (length <= 0xffff) {
- this.bufferBuilder.append(0xde);
- this.pack_uint16(length);
- } else if (length <= 0xffffffff) {
- this.bufferBuilder.append(0xdf);
- this.pack_uint32(length);
- } else {
- throw new Error('Invalid length');
- }
- for (var prop in obj) {
- if (obj.hasOwnProperty(prop)) {
- this.pack(prop);
- this.pack(obj[prop]);
- }
- }
-};
-
-Packer.prototype.pack_uint8 = function (num) {
- this.bufferBuilder.append(num);
-};
-
-Packer.prototype.pack_uint16 = function (num) {
- this.bufferBuilder.append(num >> 8);
- this.bufferBuilder.append(num & 0xff);
-};
-
-Packer.prototype.pack_uint32 = function (num) {
- var n = num & 0xffffffff;
- this.bufferBuilder.append((n & 0xff000000) >>> 24);
- this.bufferBuilder.append((n & 0x00ff0000) >>> 16);
- this.bufferBuilder.append((n & 0x0000ff00) >>> 8);
- this.bufferBuilder.append((n & 0x000000ff));
-};
-
-Packer.prototype.pack_uint64 = function (num) {
- var high = num / Math.pow(2, 32);
- var low = num % Math.pow(2, 32);
- this.bufferBuilder.append((high & 0xff000000) >>> 24);
- this.bufferBuilder.append((high & 0x00ff0000) >>> 16);
- this.bufferBuilder.append((high & 0x0000ff00) >>> 8);
- this.bufferBuilder.append((high & 0x000000ff));
- this.bufferBuilder.append((low & 0xff000000) >>> 24);
- this.bufferBuilder.append((low & 0x00ff0000) >>> 16);
- this.bufferBuilder.append((low & 0x0000ff00) >>> 8);
- this.bufferBuilder.append((low & 0x000000ff));
-};
-
-Packer.prototype.pack_int8 = function (num) {
- this.bufferBuilder.append(num & 0xff);
-};
-
-Packer.prototype.pack_int16 = function (num) {
- this.bufferBuilder.append((num & 0xff00) >> 8);
- this.bufferBuilder.append(num & 0xff);
-};
-
-Packer.prototype.pack_int32 = function (num) {
- this.bufferBuilder.append((num >>> 24) & 0xff);
- this.bufferBuilder.append((num & 0x00ff0000) >>> 16);
- this.bufferBuilder.append((num & 0x0000ff00) >>> 8);
- this.bufferBuilder.append((num & 0x000000ff));
-};
-
-Packer.prototype.pack_int64 = function (num) {
- var high = Math.floor(num / Math.pow(2, 32));
- var low = num % Math.pow(2, 32);
- this.bufferBuilder.append((high & 0xff000000) >>> 24);
- this.bufferBuilder.append((high & 0x00ff0000) >>> 16);
- this.bufferBuilder.append((high & 0x0000ff00) >>> 8);
- this.bufferBuilder.append((high & 0x000000ff));
- this.bufferBuilder.append((low & 0xff000000) >>> 24);
- this.bufferBuilder.append((low & 0x00ff0000) >>> 16);
- this.bufferBuilder.append((low & 0x0000ff00) >>> 8);
- this.bufferBuilder.append((low & 0x000000ff));
-};
-
-function _utf8Replace (m) {
- var code = m.charCodeAt(0);
-
- if (code <= 0x7ff) return '00';
- if (code <= 0xffff) return '000';
- if (code <= 0x1fffff) return '0000';
- if (code <= 0x3ffffff) return '00000';
- return '000000';
-}
-
-function utf8Length (str) {
- if (str.length > 600) {
- // Blob method faster for large strings
- return (new Blob([str])).size;
- } else {
- return str.replace(/[^\u0000-\u007F]/g, _utf8Replace).length;
- }
-}
-
-},{"./bufferbuilder":"EgBh"}],"iSxC":[function(require,module,exports) {
-/*
- * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.extractVersion = extractVersion;
-exports.wrapPeerConnectionEvent = wrapPeerConnectionEvent;
-exports.disableLog = disableLog;
-exports.disableWarnings = disableWarnings;
-exports.log = log;
-exports.deprecated = deprecated;
-exports.detectBrowser = detectBrowser;
-exports.compactObject = compactObject;
-exports.walkStats = walkStats;
-exports.filterStats = filterStats;
-
-function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
-
-function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function (obj) { return typeof obj; }; } else { _typeof = function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
-
-var logDisabled_ = true;
-var deprecationWarnings_ = true;
-/**
- * Extract browser version out of the provided user agent string.
- *
- * @param {!string} uastring userAgent string.
- * @param {!string} expr Regular expression used as match criteria.
- * @param {!number} pos position in the version string to be returned.
- * @return {!number} browser version.
- */
-
-function extractVersion(uastring, expr, pos) {
- var match = uastring.match(expr);
- return match && match.length >= pos && parseInt(match[pos], 10);
-} // Wraps the peerconnection event eventNameToWrap in a function
-// which returns the modified event object (or false to prevent
-// the event).
-
-
-function wrapPeerConnectionEvent(window, eventNameToWrap, wrapper) {
- if (!window.RTCPeerConnection) {
- return;
- }
-
- var proto = window.RTCPeerConnection.prototype;
- var nativeAddEventListener = proto.addEventListener;
-
- proto.addEventListener = function (nativeEventName, cb) {
- if (nativeEventName !== eventNameToWrap) {
- return nativeAddEventListener.apply(this, arguments);
- }
-
- var wrappedCallback = function (e) {
- var modifiedEvent = wrapper(e);
-
- if (modifiedEvent) {
- if (cb.handleEvent) {
- cb.handleEvent(modifiedEvent);
- } else {
- cb(modifiedEvent);
- }
- }
- };
-
- this._eventMap = this._eventMap || {};
-
- if (!this._eventMap[eventNameToWrap]) {
- this._eventMap[eventNameToWrap] = new Map();
- }
-
- this._eventMap[eventNameToWrap].set(cb, wrappedCallback);
-
- return nativeAddEventListener.apply(this, [nativeEventName, wrappedCallback]);
- };
-
- var nativeRemoveEventListener = proto.removeEventListener;
-
- proto.removeEventListener = function (nativeEventName, cb) {
- if (nativeEventName !== eventNameToWrap || !this._eventMap || !this._eventMap[eventNameToWrap]) {
- return nativeRemoveEventListener.apply(this, arguments);
- }
-
- if (!this._eventMap[eventNameToWrap].has(cb)) {
- return nativeRemoveEventListener.apply(this, arguments);
- }
-
- var unwrappedCb = this._eventMap[eventNameToWrap].get(cb);
-
- this._eventMap[eventNameToWrap].delete(cb);
-
- if (this._eventMap[eventNameToWrap].size === 0) {
- delete this._eventMap[eventNameToWrap];
- }
-
- if (Object.keys(this._eventMap).length === 0) {
- delete this._eventMap;
- }
-
- return nativeRemoveEventListener.apply(this, [nativeEventName, unwrappedCb]);
- };
-
- Object.defineProperty(proto, 'on' + eventNameToWrap, {
- get: function () {
- return this['_on' + eventNameToWrap];
- },
- set: function (cb) {
- if (this['_on' + eventNameToWrap]) {
- this.removeEventListener(eventNameToWrap, this['_on' + eventNameToWrap]);
- delete this['_on' + eventNameToWrap];
- }
-
- if (cb) {
- this.addEventListener(eventNameToWrap, this['_on' + eventNameToWrap] = cb);
- }
- },
- enumerable: true,
- configurable: true
- });
-}
-
-function disableLog(bool) {
- if (typeof bool !== 'boolean') {
- return new Error('Argument type: ' + _typeof(bool) + '. Please use a boolean.');
- }
-
- logDisabled_ = bool;
- return bool ? 'adapter.js logging disabled' : 'adapter.js logging enabled';
-}
-/**
- * Disable or enable deprecation warnings
- * @param {!boolean} bool set to true to disable warnings.
- */
-
-
-function disableWarnings(bool) {
- if (typeof bool !== 'boolean') {
- return new Error('Argument type: ' + _typeof(bool) + '. Please use a boolean.');
- }
-
- deprecationWarnings_ = !bool;
- return 'adapter.js deprecation warnings ' + (bool ? 'disabled' : 'enabled');
-}
-
-function log() {
- if ((typeof window === "undefined" ? "undefined" : _typeof(window)) === 'object') {
- if (logDisabled_) {
- return;
- }
-
- if (typeof console !== 'undefined' && typeof console.log === 'function') {
- console.log.apply(console, arguments);
- }
- }
-}
-/**
- * Shows a deprecation warning suggesting the modern and spec-compatible API.
- */
-
-
-function deprecated(oldMethod, newMethod) {
- if (!deprecationWarnings_) {
- return;
- }
-
- console.warn(oldMethod + ' is deprecated, please use ' + newMethod + ' instead.');
-}
-/**
- * Browser detector.
- *
- * @return {object} result containing browser and version
- * properties.
- */
-
-
-function detectBrowser(window) {
- // Returned result object.
- var result = {
- browser: null,
- version: null
- }; // Fail early if it's not a browser
-
- if (typeof window === 'undefined' || !window.navigator) {
- result.browser = 'Not a browser.';
- return result;
- }
-
- var {
- navigator: navigator
- } = window;
-
- if (navigator.mozGetUserMedia) {
- // Firefox.
- result.browser = 'firefox';
- result.version = extractVersion(navigator.userAgent, /Firefox\/(\d+)\./, 1);
- } else if (navigator.webkitGetUserMedia || window.isSecureContext === false && window.webkitRTCPeerConnection && !window.RTCIceGatherer) {
- // Chrome, Chromium, Webview, Opera.
- // Version matches Chrome/WebRTC version.
- // Chrome 74 removed webkitGetUserMedia on http as well so we need the
- // more complicated fallback to webkitRTCPeerConnection.
- result.browser = 'chrome';
- result.version = extractVersion(navigator.userAgent, /Chrom(e|ium)\/(\d+)\./, 2);
- } else if (navigator.mediaDevices && navigator.userAgent.match(/Edge\/(\d+).(\d+)$/)) {
- // Edge.
- result.browser = 'edge';
- result.version = extractVersion(navigator.userAgent, /Edge\/(\d+).(\d+)$/, 2);
- } else if (window.RTCPeerConnection && navigator.userAgent.match(/AppleWebKit\/(\d+)\./)) {
- // Safari.
- result.browser = 'safari';
- result.version = extractVersion(navigator.userAgent, /AppleWebKit\/(\d+)\./, 1);
- result.supportsUnifiedPlan = window.RTCRtpTransceiver && 'currentDirection' in window.RTCRtpTransceiver.prototype;
- } else {
- // Default fallthrough: not supported.
- result.browser = 'Not a supported browser.';
- return result;
- }
-
- return result;
-}
-/**
- * Checks if something is an object.
- *
- * @param {*} val The something you want to check.
- * @return true if val is an object, false otherwise.
- */
-
-
-function isObject(val) {
- return Object.prototype.toString.call(val) === '[object Object]';
-}
-/**
- * Remove all empty objects and undefined values
- * from a nested object -- an enhanced and vanilla version
- * of Lodash's `compact`.
- */
-
-
-function compactObject(data) {
- if (!isObject(data)) {
- return data;
- }
-
- return Object.keys(data).reduce(function (accumulator, key) {
- var isObj = isObject(data[key]);
- var value = isObj ? compactObject(data[key]) : data[key];
- var isEmptyObject = isObj && !Object.keys(value).length;
-
- if (value === undefined || isEmptyObject) {
- return accumulator;
- }
-
- return Object.assign(accumulator, _defineProperty({}, key, value));
- }, {});
-}
-/* iterates the stats graph recursively. */
-
-
-function walkStats(stats, base, resultSet) {
- if (!base || resultSet.has(base.id)) {
- return;
- }
-
- resultSet.set(base.id, base);
- Object.keys(base).forEach(function (name) {
- if (name.endsWith('Id')) {
- walkStats(stats, stats.get(base[name]), resultSet);
- } else if (name.endsWith('Ids')) {
- base[name].forEach(function (id) {
- walkStats(stats, stats.get(id), resultSet);
- });
- }
- });
-}
-/* filter getStats for a sender/receiver track. */
-
-
-function filterStats(result, track, outbound) {
- var streamStatsType = outbound ? 'outbound-rtp' : 'inbound-rtp';
- var filteredResult = new Map();
-
- if (track === null) {
- return filteredResult;
- }
-
- var trackStats = [];
- result.forEach(function (value) {
- if (value.type === 'track' && value.trackIdentifier === track.id) {
- trackStats.push(value);
- }
- });
- trackStats.forEach(function (trackStat) {
- result.forEach(function (stats) {
- if (stats.type === streamStatsType && stats.trackId === trackStat.id) {
- walkStats(result, stats, filteredResult);
- }
- });
- });
- return filteredResult;
-}
-},{}],"s6SN":[function(require,module,exports) {
-/*
- * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.shimGetUserMedia = shimGetUserMedia;
-
-var utils = _interopRequireWildcard(require("../utils.js"));
-
-function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
-
-function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function (obj) { return typeof obj; }; } else { _typeof = function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
-
-var logging = utils.log;
-
-function shimGetUserMedia(window, browserDetails) {
- var navigator = window && window.navigator;
-
- if (!navigator.mediaDevices) {
- return;
- }
-
- var constraintsToChrome_ = function (c) {
- if (_typeof(c) !== 'object' || c.mandatory || c.optional) {
- return c;
- }
-
- var cc = {};
- Object.keys(c).forEach(function (key) {
- if (key === 'require' || key === 'advanced' || key === 'mediaSource') {
- return;
- }
-
- var r = _typeof(c[key]) === 'object' ? c[key] : {
- ideal: c[key]
- };
-
- if (r.exact !== undefined && typeof r.exact === 'number') {
- r.min = r.max = r.exact;
- }
-
- var oldname_ = function (prefix, name) {
- if (prefix) {
- return prefix + name.charAt(0).toUpperCase() + name.slice(1);
- }
-
- return name === 'deviceId' ? 'sourceId' : name;
- };
-
- if (r.ideal !== undefined) {
- cc.optional = cc.optional || [];
- var oc = {};
-
- if (typeof r.ideal === 'number') {
- oc[oldname_('min', key)] = r.ideal;
- cc.optional.push(oc);
- oc = {};
- oc[oldname_('max', key)] = r.ideal;
- cc.optional.push(oc);
- } else {
- oc[oldname_('', key)] = r.ideal;
- cc.optional.push(oc);
- }
- }
-
- if (r.exact !== undefined && typeof r.exact !== 'number') {
- cc.mandatory = cc.mandatory || {};
- cc.mandatory[oldname_('', key)] = r.exact;
- } else {
- ['min', 'max'].forEach(function (mix) {
- if (r[mix] !== undefined) {
- cc.mandatory = cc.mandatory || {};
- cc.mandatory[oldname_(mix, key)] = r[mix];
- }
- });
- }
- });
-
- if (c.advanced) {
- cc.optional = (cc.optional || []).concat(c.advanced);
- }
-
- return cc;
- };
-
- var shimConstraints_ = function (constraints, func) {
- if (browserDetails.version >= 61) {
- return func(constraints);
- }
-
- constraints = JSON.parse(JSON.stringify(constraints));
-
- if (constraints && _typeof(constraints.audio) === 'object') {
- var remap = function (obj, a, b) {
- if (a in obj && !(b in obj)) {
- obj[b] = obj[a];
- delete obj[a];
- }
- };
-
- constraints = JSON.parse(JSON.stringify(constraints));
- remap(constraints.audio, 'autoGainControl', 'googAutoGainControl');
- remap(constraints.audio, 'noiseSuppression', 'googNoiseSuppression');
- constraints.audio = constraintsToChrome_(constraints.audio);
- }
-
- if (constraints && _typeof(constraints.video) === 'object') {
- // Shim facingMode for mobile & surface pro.
- var face = constraints.video.facingMode;
- face = face && (_typeof(face) === 'object' ? face : {
- ideal: face
- });
- var getSupportedFacingModeLies = browserDetails.version < 66;
-
- if (face && (face.exact === 'user' || face.exact === 'environment' || face.ideal === 'user' || face.ideal === 'environment') && !(navigator.mediaDevices.getSupportedConstraints && navigator.mediaDevices.getSupportedConstraints().facingMode && !getSupportedFacingModeLies)) {
- delete constraints.video.facingMode;
- var matches;
-
- if (face.exact === 'environment' || face.ideal === 'environment') {
- matches = ['back', 'rear'];
- } else if (face.exact === 'user' || face.ideal === 'user') {
- matches = ['front'];
- }
-
- if (matches) {
- // Look for matches in label, or use last cam for back (typical).
- return navigator.mediaDevices.enumerateDevices().then(function (devices) {
- devices = devices.filter(function (d) {
- return d.kind === 'videoinput';
- });
- var dev = devices.find(function (d) {
- return matches.some(function (match) {
- return d.label.toLowerCase().includes(match);
- });
- });
-
- if (!dev && devices.length && matches.includes('back')) {
- dev = devices[devices.length - 1]; // more likely the back cam
- }
-
- if (dev) {
- constraints.video.deviceId = face.exact ? {
- exact: dev.deviceId
- } : {
- ideal: dev.deviceId
- };
- }
-
- constraints.video = constraintsToChrome_(constraints.video);
- logging('chrome: ' + JSON.stringify(constraints));
- return func(constraints);
- });
- }
- }
-
- constraints.video = constraintsToChrome_(constraints.video);
- }
-
- logging('chrome: ' + JSON.stringify(constraints));
- return func(constraints);
- };
-
- var shimError_ = function (e) {
- if (browserDetails.version >= 64) {
- return e;
- }
-
- return {
- name: {
- PermissionDeniedError: 'NotAllowedError',
- PermissionDismissedError: 'NotAllowedError',
- InvalidStateError: 'NotAllowedError',
- DevicesNotFoundError: 'NotFoundError',
- ConstraintNotSatisfiedError: 'OverconstrainedError',
- TrackStartError: 'NotReadableError',
- MediaDeviceFailedDueToShutdown: 'NotAllowedError',
- MediaDeviceKillSwitchOn: 'NotAllowedError',
- TabCaptureError: 'AbortError',
- ScreenCaptureError: 'AbortError',
- DeviceCaptureError: 'AbortError'
- }[e.name] || e.name,
- message: e.message,
- constraint: e.constraint || e.constraintName,
- toString: function () {
- return this.name + (this.message && ': ') + this.message;
- }
- };
- };
-
- var getUserMedia_ = function (constraints, onSuccess, onError) {
- shimConstraints_(constraints, function (c) {
- navigator.webkitGetUserMedia(c, onSuccess, function (e) {
- if (onError) {
- onError(shimError_(e));
- }
- });
- });
- };
-
- navigator.getUserMedia = getUserMedia_.bind(navigator); // Even though Chrome 45 has navigator.mediaDevices and a getUserMedia
- // function which returns a Promise, it does not accept spec-style
- // constraints.
-
- if (navigator.mediaDevices.getUserMedia) {
- var origGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);
-
- navigator.mediaDevices.getUserMedia = function (cs) {
- return shimConstraints_(cs, function (c) {
- return origGetUserMedia(c).then(function (stream) {
- if (c.audio && !stream.getAudioTracks().length || c.video && !stream.getVideoTracks().length) {
- stream.getTracks().forEach(function (track) {
- track.stop();
- });
- throw new DOMException('', 'NotFoundError');
- }
-
- return stream;
- }, function (e) {
- return Promise.reject(shimError_(e));
- });
- });
- };
- }
-}
-},{"../utils.js":"iSxC"}],"VHa8":[function(require,module,exports) {
-/*
- * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.shimGetDisplayMedia = shimGetDisplayMedia;
-
-function shimGetDisplayMedia(window, getSourceId) {
- if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) {
- return;
- }
-
- if (!window.navigator.mediaDevices) {
- return;
- } // getSourceId is a function that returns a promise resolving with
- // the sourceId of the screen/window/tab to be shared.
-
-
- if (typeof getSourceId !== 'function') {
- console.error('shimGetDisplayMedia: getSourceId argument is not ' + 'a function');
- return;
- }
-
- window.navigator.mediaDevices.getDisplayMedia = function getDisplayMedia(constraints) {
- return getSourceId(constraints).then(function (sourceId) {
- var widthSpecified = constraints.video && constraints.video.width;
- var heightSpecified = constraints.video && constraints.video.height;
- var frameRateSpecified = constraints.video && constraints.video.frameRate;
- constraints.video = {
- mandatory: {
- chromeMediaSource: 'desktop',
- chromeMediaSourceId: sourceId,
- maxFrameRate: frameRateSpecified || 3
- }
- };
-
- if (widthSpecified) {
- constraints.video.mandatory.maxWidth = widthSpecified;
- }
-
- if (heightSpecified) {
- constraints.video.mandatory.maxHeight = heightSpecified;
- }
-
- return window.navigator.mediaDevices.getUserMedia(constraints);
- });
- };
-}
-},{}],"uI5X":[function(require,module,exports) {
-/*
- * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.shimMediaStream = shimMediaStream;
-exports.shimOnTrack = shimOnTrack;
-exports.shimGetSendersWithDtmf = shimGetSendersWithDtmf;
-exports.shimGetStats = shimGetStats;
-exports.shimSenderReceiverGetStats = shimSenderReceiverGetStats;
-exports.shimAddTrackRemoveTrackWithNative = shimAddTrackRemoveTrackWithNative;
-exports.shimAddTrackRemoveTrack = shimAddTrackRemoveTrack;
-exports.shimPeerConnection = shimPeerConnection;
-exports.fixNegotiationNeeded = fixNegotiationNeeded;
-Object.defineProperty(exports, "shimGetUserMedia", {
- enumerable: true,
- get: function () {
- return _getusermedia.shimGetUserMedia;
- }
-});
-Object.defineProperty(exports, "shimGetDisplayMedia", {
- enumerable: true,
- get: function () {
- return _getdisplaymedia.shimGetDisplayMedia;
- }
-});
-
-var utils = _interopRequireWildcard(require("../utils.js"));
-
-var _getusermedia = require("./getusermedia");
-
-var _getdisplaymedia = require("./getdisplaymedia");
-
-function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
-
-function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
-
-function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function (obj) { return typeof obj; }; } else { _typeof = function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
-
-function shimMediaStream(window) {
- window.MediaStream = window.MediaStream || window.webkitMediaStream;
-}
-
-function shimOnTrack(window) {
- if (_typeof(window) === 'object' && window.RTCPeerConnection && !('ontrack' in window.RTCPeerConnection.prototype)) {
- Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', {
- get: function () {
- return this._ontrack;
- },
- set: function (f) {
- if (this._ontrack) {
- this.removeEventListener('track', this._ontrack);
- }
-
- this.addEventListener('track', this._ontrack = f);
- },
- enumerable: true,
- configurable: true
- });
- var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription;
-
- window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() {
- var _this = this;
-
- if (!this._ontrackpoly) {
- this._ontrackpoly = function (e) {
- // onaddstream does not fire when a track is added to an existing
- // stream. But stream.onaddtrack is implemented so we use that.
- e.stream.addEventListener('addtrack', function (te) {
- var receiver;
-
- if (window.RTCPeerConnection.prototype.getReceivers) {
- receiver = _this.getReceivers().find(function (r) {
- return r.track && r.track.id === te.track.id;
- });
- } else {
- receiver = {
- track: te.track
- };
- }
-
- var event = new Event('track');
- event.track = te.track;
- event.receiver = receiver;
- event.transceiver = {
- receiver: receiver
- };
- event.streams = [e.stream];
-
- _this.dispatchEvent(event);
- });
- e.stream.getTracks().forEach(function (track) {
- var receiver;
-
- if (window.RTCPeerConnection.prototype.getReceivers) {
- receiver = _this.getReceivers().find(function (r) {
- return r.track && r.track.id === track.id;
- });
- } else {
- receiver = {
- track: track
- };
- }
-
- var event = new Event('track');
- event.track = track;
- event.receiver = receiver;
- event.transceiver = {
- receiver: receiver
- };
- event.streams = [e.stream];
-
- _this.dispatchEvent(event);
- });
- };
-
- this.addEventListener('addstream', this._ontrackpoly);
- }
-
- return origSetRemoteDescription.apply(this, arguments);
- };
- } else {
- // even if RTCRtpTransceiver is in window, it is only used and
- // emitted in unified-plan. Unfortunately this means we need
- // to unconditionally wrap the event.
- utils.wrapPeerConnectionEvent(window, 'track', function (e) {
- if (!e.transceiver) {
- Object.defineProperty(e, 'transceiver', {
- value: {
- receiver: e.receiver
- }
- });
- }
-
- return e;
- });
- }
-}
-
-function shimGetSendersWithDtmf(window) {
- // Overrides addTrack/removeTrack, depends on shimAddTrackRemoveTrack.
- if (_typeof(window) === 'object' && window.RTCPeerConnection && !('getSenders' in window.RTCPeerConnection.prototype) && 'createDTMFSender' in window.RTCPeerConnection.prototype) {
- var shimSenderWithDtmf = function (pc, track) {
- return {
- track: track,
-
- get dtmf() {
- if (this._dtmf === undefined) {
- if (track.kind === 'audio') {
- this._dtmf = pc.createDTMFSender(track);
- } else {
- this._dtmf = null;
- }
- }
-
- return this._dtmf;
- },
-
- _pc: pc
- };
- }; // augment addTrack when getSenders is not available.
-
-
- if (!window.RTCPeerConnection.prototype.getSenders) {
- window.RTCPeerConnection.prototype.getSenders = function getSenders() {
- this._senders = this._senders || [];
- return this._senders.slice(); // return a copy of the internal state.
- };
-
- var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
-
- window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) {
- var sender = origAddTrack.apply(this, arguments);
-
- if (!sender) {
- sender = shimSenderWithDtmf(this, track);
-
- this._senders.push(sender);
- }
-
- return sender;
- };
-
- var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;
-
- window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) {
- origRemoveTrack.apply(this, arguments);
-
- var idx = this._senders.indexOf(sender);
-
- if (idx !== -1) {
- this._senders.splice(idx, 1);
- }
- };
- }
-
- var origAddStream = window.RTCPeerConnection.prototype.addStream;
-
- window.RTCPeerConnection.prototype.addStream = function addStream(stream) {
- var _this2 = this;
-
- this._senders = this._senders || [];
- origAddStream.apply(this, [stream]);
- stream.getTracks().forEach(function (track) {
- _this2._senders.push(shimSenderWithDtmf(_this2, track));
- });
- };
-
- var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;
-
- window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
- var _this3 = this;
-
- this._senders = this._senders || [];
- origRemoveStream.apply(this, [stream]);
- stream.getTracks().forEach(function (track) {
- var sender = _this3._senders.find(function (s) {
- return s.track === track;
- });
-
- if (sender) {
- // remove sender
- _this3._senders.splice(_this3._senders.indexOf(sender), 1);
- }
- });
- };
- } else if (_typeof(window) === 'object' && window.RTCPeerConnection && 'getSenders' in window.RTCPeerConnection.prototype && 'createDTMFSender' in window.RTCPeerConnection.prototype && window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) {
- var origGetSenders = window.RTCPeerConnection.prototype.getSenders;
-
- window.RTCPeerConnection.prototype.getSenders = function getSenders() {
- var _this4 = this;
-
- var senders = origGetSenders.apply(this, []);
- senders.forEach(function (sender) {
- return sender._pc = _this4;
- });
- return senders;
- };
-
- Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', {
- get: function () {
- if (this._dtmf === undefined) {
- if (this.track.kind === 'audio') {
- this._dtmf = this._pc.createDTMFSender(this.track);
- } else {
- this._dtmf = null;
- }
- }
-
- return this._dtmf;
- }
- });
- }
-}
-
-function shimGetStats(window) {
- if (!window.RTCPeerConnection) {
- return;
- }
-
- var origGetStats = window.RTCPeerConnection.prototype.getStats;
-
- window.RTCPeerConnection.prototype.getStats = function getStats() {
- var _this5 = this;
-
- var [selector, onSucc, onErr] = arguments; // If selector is a function then we are in the old style stats so just
- // pass back the original getStats format to avoid breaking old users.
-
- if (arguments.length > 0 && typeof selector === 'function') {
- return origGetStats.apply(this, arguments);
- } // When spec-style getStats is supported, return those when called with
- // either no arguments or the selector argument is null.
-
-
- if (origGetStats.length === 0 && (arguments.length === 0 || typeof selector !== 'function')) {
- return origGetStats.apply(this, []);
- }
-
- var fixChromeStats_ = function (response) {
- var standardReport = {};
- var reports = response.result();
- reports.forEach(function (report) {
- var standardStats = {
- id: report.id,
- timestamp: report.timestamp,
- type: {
- localcandidate: 'local-candidate',
- remotecandidate: 'remote-candidate'
- }[report.type] || report.type
- };
- report.names().forEach(function (name) {
- standardStats[name] = report.stat(name);
- });
- standardReport[standardStats.id] = standardStats;
- });
- return standardReport;
- }; // shim getStats with maplike support
-
-
- var makeMapStats = function (stats) {
- return new Map(Object.keys(stats).map(function (key) {
- return [key, stats[key]];
- }));
- };
-
- if (arguments.length >= 2) {
- var successCallbackWrapper_ = function (response) {
- onSucc(makeMapStats(fixChromeStats_(response)));
- };
-
- return origGetStats.apply(this, [successCallbackWrapper_, selector]);
- } // promise-support
-
-
- return new Promise(function (resolve, reject) {
- origGetStats.apply(_this5, [function (response) {
- resolve(makeMapStats(fixChromeStats_(response)));
- }, reject]);
- }).then(onSucc, onErr);
- };
-}
-
-function shimSenderReceiverGetStats(window) {
- if (!(_typeof(window) === 'object' && window.RTCPeerConnection && window.RTCRtpSender && window.RTCRtpReceiver)) {
- return;
- } // shim sender stats.
-
-
- if (!('getStats' in window.RTCRtpSender.prototype)) {
- var origGetSenders = window.RTCPeerConnection.prototype.getSenders;
-
- if (origGetSenders) {
- window.RTCPeerConnection.prototype.getSenders = function getSenders() {
- var _this6 = this;
-
- var senders = origGetSenders.apply(this, []);
- senders.forEach(function (sender) {
- return sender._pc = _this6;
- });
- return senders;
- };
- }
-
- var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
-
- if (origAddTrack) {
- window.RTCPeerConnection.prototype.addTrack = function addTrack() {
- var sender = origAddTrack.apply(this, arguments);
- sender._pc = this;
- return sender;
- };
- }
-
- window.RTCRtpSender.prototype.getStats = function getStats() {
- var sender = this;
- return this._pc.getStats().then(function (result) {
- return (
- /* Note: this will include stats of all senders that
- * send a track with the same id as sender.track as
- * it is not possible to identify the RTCRtpSender.
- */
- utils.filterStats(result, sender.track, true)
- );
- });
- };
- } // shim receiver stats.
-
-
- if (!('getStats' in window.RTCRtpReceiver.prototype)) {
- var origGetReceivers = window.RTCPeerConnection.prototype.getReceivers;
-
- if (origGetReceivers) {
- window.RTCPeerConnection.prototype.getReceivers = function getReceivers() {
- var _this7 = this;
-
- var receivers = origGetReceivers.apply(this, []);
- receivers.forEach(function (receiver) {
- return receiver._pc = _this7;
- });
- return receivers;
- };
- }
-
- utils.wrapPeerConnectionEvent(window, 'track', function (e) {
- e.receiver._pc = e.srcElement;
- return e;
- });
-
- window.RTCRtpReceiver.prototype.getStats = function getStats() {
- var receiver = this;
- return this._pc.getStats().then(function (result) {
- return utils.filterStats(result, receiver.track, false);
- });
- };
- }
-
- if (!('getStats' in window.RTCRtpSender.prototype && 'getStats' in window.RTCRtpReceiver.prototype)) {
- return;
- } // shim RTCPeerConnection.getStats(track).
-
-
- var origGetStats = window.RTCPeerConnection.prototype.getStats;
-
- window.RTCPeerConnection.prototype.getStats = function getStats() {
- if (arguments.length > 0 && arguments[0] instanceof window.MediaStreamTrack) {
- var track = arguments[0];
- var sender;
- var receiver;
- var err;
- this.getSenders().forEach(function (s) {
- if (s.track === track) {
- if (sender) {
- err = true;
- } else {
- sender = s;
- }
- }
- });
- this.getReceivers().forEach(function (r) {
- if (r.track === track) {
- if (receiver) {
- err = true;
- } else {
- receiver = r;
- }
- }
-
- return r.track === track;
- });
-
- if (err || sender && receiver) {
- return Promise.reject(new DOMException('There are more than one sender or receiver for the track.', 'InvalidAccessError'));
- } else if (sender) {
- return sender.getStats();
- } else if (receiver) {
- return receiver.getStats();
- }
-
- return Promise.reject(new DOMException('There is no sender or receiver for the track.', 'InvalidAccessError'));
- }
-
- return origGetStats.apply(this, arguments);
- };
-}
-
-function shimAddTrackRemoveTrackWithNative(window) {
- // shim addTrack/removeTrack with native variants in order to make
- // the interactions with legacy getLocalStreams behave as in other browsers.
- // Keeps a mapping stream.id => [stream, rtpsenders...]
- window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() {
- var _this8 = this;
-
- this._shimmedLocalStreams = this._shimmedLocalStreams || {};
- return Object.keys(this._shimmedLocalStreams).map(function (streamId) {
- return _this8._shimmedLocalStreams[streamId][0];
- });
- };
-
- var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
-
- window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) {
- if (!stream) {
- return origAddTrack.apply(this, arguments);
- }
-
- this._shimmedLocalStreams = this._shimmedLocalStreams || {};
- var sender = origAddTrack.apply(this, arguments);
-
- if (!this._shimmedLocalStreams[stream.id]) {
- this._shimmedLocalStreams[stream.id] = [stream, sender];
- } else if (this._shimmedLocalStreams[stream.id].indexOf(sender) === -1) {
- this._shimmedLocalStreams[stream.id].push(sender);
- }
-
- return sender;
- };
-
- var origAddStream = window.RTCPeerConnection.prototype.addStream;
-
- window.RTCPeerConnection.prototype.addStream = function addStream(stream) {
- var _this9 = this;
-
- this._shimmedLocalStreams = this._shimmedLocalStreams || {};
- stream.getTracks().forEach(function (track) {
- var alreadyExists = _this9.getSenders().find(function (s) {
- return s.track === track;
- });
-
- if (alreadyExists) {
- throw new DOMException('Track already exists.', 'InvalidAccessError');
- }
- });
- var existingSenders = this.getSenders();
- origAddStream.apply(this, arguments);
- var newSenders = this.getSenders().filter(function (newSender) {
- return existingSenders.indexOf(newSender) === -1;
- });
- this._shimmedLocalStreams[stream.id] = [stream].concat(newSenders);
- };
-
- var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;
-
- window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
- this._shimmedLocalStreams = this._shimmedLocalStreams || {};
- delete this._shimmedLocalStreams[stream.id];
- return origRemoveStream.apply(this, arguments);
- };
-
- var origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;
-
- window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) {
- var _this10 = this;
-
- this._shimmedLocalStreams = this._shimmedLocalStreams || {};
-
- if (sender) {
- Object.keys(this._shimmedLocalStreams).forEach(function (streamId) {
- var idx = _this10._shimmedLocalStreams[streamId].indexOf(sender);
-
- if (idx !== -1) {
- _this10._shimmedLocalStreams[streamId].splice(idx, 1);
- }
-
- if (_this10._shimmedLocalStreams[streamId].length === 1) {
- delete _this10._shimmedLocalStreams[streamId];
- }
- });
- }
-
- return origRemoveTrack.apply(this, arguments);
- };
-}
-
-function shimAddTrackRemoveTrack(window, browserDetails) {
- if (!window.RTCPeerConnection) {
- return;
- } // shim addTrack and removeTrack.
-
-
- if (window.RTCPeerConnection.prototype.addTrack && browserDetails.version >= 65) {
- return shimAddTrackRemoveTrackWithNative(window);
- } // also shim pc.getLocalStreams when addTrack is shimmed
- // to return the original streams.
-
-
- var origGetLocalStreams = window.RTCPeerConnection.prototype.getLocalStreams;
-
- window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() {
- var _this11 = this;
-
- var nativeStreams = origGetLocalStreams.apply(this);
- this._reverseStreams = this._reverseStreams || {};
- return nativeStreams.map(function (stream) {
- return _this11._reverseStreams[stream.id];
- });
- };
-
- var origAddStream = window.RTCPeerConnection.prototype.addStream;
-
- window.RTCPeerConnection.prototype.addStream = function addStream(stream) {
- var _this12 = this;
-
- this._streams = this._streams || {};
- this._reverseStreams = this._reverseStreams || {};
- stream.getTracks().forEach(function (track) {
- var alreadyExists = _this12.getSenders().find(function (s) {
- return s.track === track;
- });
-
- if (alreadyExists) {
- throw new DOMException('Track already exists.', 'InvalidAccessError');
- }
- }); // Add identity mapping for consistency with addTrack.
- // Unless this is being used with a stream from addTrack.
-
- if (!this._reverseStreams[stream.id]) {
- var newStream = new window.MediaStream(stream.getTracks());
- this._streams[stream.id] = newStream;
- this._reverseStreams[newStream.id] = stream;
- stream = newStream;
- }
-
- origAddStream.apply(this, [stream]);
- };
-
- var origRemoveStream = window.RTCPeerConnection.prototype.removeStream;
-
- window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
- this._streams = this._streams || {};
- this._reverseStreams = this._reverseStreams || {};
- origRemoveStream.apply(this, [this._streams[stream.id] || stream]);
- delete this._reverseStreams[this._streams[stream.id] ? this._streams[stream.id].id : stream.id];
- delete this._streams[stream.id];
- };
-
- window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) {
- var _this13 = this;
-
- if (this.signalingState === 'closed') {
- throw new DOMException('The RTCPeerConnection\'s signalingState is \'closed\'.', 'InvalidStateError');
- }
-
- var streams = [].slice.call(arguments, 1);
-
- if (streams.length !== 1 || !streams[0].getTracks().find(function (t) {
- return t === track;
- })) {
- // this is not fully correct but all we can manage without
- // [[associated MediaStreams]] internal slot.
- throw new DOMException('The adapter.js addTrack polyfill only supports a single ' + ' stream which is associated with the specified track.', 'NotSupportedError');
- }
-
- var alreadyExists = this.getSenders().find(function (s) {
- return s.track === track;
- });
-
- if (alreadyExists) {
- throw new DOMException('Track already exists.', 'InvalidAccessError');
- }
-
- this._streams = this._streams || {};
- this._reverseStreams = this._reverseStreams || {};
- var oldStream = this._streams[stream.id];
-
- if (oldStream) {
- // this is using odd Chrome behaviour, use with caution:
- // https://bugs.chromium.org/p/webrtc/issues/detail?id=7815
- // Note: we rely on the high-level addTrack/dtmf shim to
- // create the sender with a dtmf sender.
- oldStream.addTrack(track); // Trigger ONN async.
-
- Promise.resolve().then(function () {
- _this13.dispatchEvent(new Event('negotiationneeded'));
- });
- } else {
- var newStream = new window.MediaStream([track]);
- this._streams[stream.id] = newStream;
- this._reverseStreams[newStream.id] = stream;
- this.addStream(newStream);
- }
-
- return this.getSenders().find(function (s) {
- return s.track === track;
- });
- }; // replace the internal stream id with the external one and
- // vice versa.
-
-
- function replaceInternalStreamId(pc, description) {
- var sdp = description.sdp;
- Object.keys(pc._reverseStreams || []).forEach(function (internalId) {
- var externalStream = pc._reverseStreams[internalId];
- var internalStream = pc._streams[externalStream.id];
- sdp = sdp.replace(new RegExp(internalStream.id, 'g'), externalStream.id);
- });
- return new RTCSessionDescription({
- type: description.type,
- sdp: sdp
- });
- }
-
- function replaceExternalStreamId(pc, description) {
- var sdp = description.sdp;
- Object.keys(pc._reverseStreams || []).forEach(function (internalId) {
- var externalStream = pc._reverseStreams[internalId];
- var internalStream = pc._streams[externalStream.id];
- sdp = sdp.replace(new RegExp(externalStream.id, 'g'), internalStream.id);
- });
- return new RTCSessionDescription({
- type: description.type,
- sdp: sdp
- });
- }
-
- ['createOffer', 'createAnswer'].forEach(function (method) {
- var nativeMethod = window.RTCPeerConnection.prototype[method];
-
- var methodObj = _defineProperty({}, method, function () {
- var _this14 = this;
-
- var args = arguments;
- var isLegacyCall = arguments.length && typeof arguments[0] === 'function';
-
- if (isLegacyCall) {
- return nativeMethod.apply(this, [function (description) {
- var desc = replaceInternalStreamId(_this14, description);
- args[0].apply(null, [desc]);
- }, function (err) {
- if (args[1]) {
- args[1].apply(null, err);
- }
- }, arguments[2]]);
- }
-
- return nativeMethod.apply(this, arguments).then(function (description) {
- return replaceInternalStreamId(_this14, description);
- });
- });
-
- window.RTCPeerConnection.prototype[method] = methodObj[method];
- });
- var origSetLocalDescription = window.RTCPeerConnection.prototype.setLocalDescription;
-
- window.RTCPeerConnection.prototype.setLocalDescription = function setLocalDescription() {
- if (!arguments.length || !arguments[0].type) {
- return origSetLocalDescription.apply(this, arguments);
- }
-
- arguments[0] = replaceExternalStreamId(this, arguments[0]);
- return origSetLocalDescription.apply(this, arguments);
- }; // TODO: mangle getStats: https://w3c.github.io/webrtc-stats/#dom-rtcmediastreamstats-streamidentifier
-
-
- var origLocalDescription = Object.getOwnPropertyDescriptor(window.RTCPeerConnection.prototype, 'localDescription');
- Object.defineProperty(window.RTCPeerConnection.prototype, 'localDescription', {
- get: function () {
- var description = origLocalDescription.get.apply(this);
-
- if (description.type === '') {
- return description;
- }
-
- return replaceInternalStreamId(this, description);
- }
- });
-
- window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) {
- var _this15 = this;
-
- if (this.signalingState === 'closed') {
- throw new DOMException('The RTCPeerConnection\'s signalingState is \'closed\'.', 'InvalidStateError');
- } // We can not yet check for sender instanceof RTCRtpSender
- // since we shim RTPSender. So we check if sender._pc is set.
-
-
- if (!sender._pc) {
- throw new DOMException('Argument 1 of RTCPeerConnection.removeTrack ' + 'does not implement interface RTCRtpSender.', 'TypeError');
- }
-
- var isLocal = sender._pc === this;
-
- if (!isLocal) {
- throw new DOMException('Sender was not created by this connection.', 'InvalidAccessError');
- } // Search for the native stream the senders track belongs to.
-
-
- this._streams = this._streams || {};
- var stream;
- Object.keys(this._streams).forEach(function (streamid) {
- var hasTrack = _this15._streams[streamid].getTracks().find(function (track) {
- return sender.track === track;
- });
-
- if (hasTrack) {
- stream = _this15._streams[streamid];
- }
- });
-
- if (stream) {
- if (stream.getTracks().length === 1) {
- // if this is the last track of the stream, remove the stream. This
- // takes care of any shimmed _senders.
- this.removeStream(this._reverseStreams[stream.id]);
- } else {
- // relying on the same odd chrome behaviour as above.
- stream.removeTrack(sender.track);
- }
-
- this.dispatchEvent(new Event('negotiationneeded'));
- }
- };
-}
-
-function shimPeerConnection(window, browserDetails) {
- if (!window.RTCPeerConnection && window.webkitRTCPeerConnection) {
- // very basic support for old versions.
- window.RTCPeerConnection = window.webkitRTCPeerConnection;
- }
-
- if (!window.RTCPeerConnection) {
- return;
- } // shim implicit creation of RTCSessionDescription/RTCIceCandidate
-
-
- if (browserDetails.version < 53) {
- ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'].forEach(function (method) {
- var nativeMethod = window.RTCPeerConnection.prototype[method];
-
- var methodObj = _defineProperty({}, method, function () {
- arguments[0] = new (method === 'addIceCandidate' ? window.RTCIceCandidate : window.RTCSessionDescription)(arguments[0]);
- return nativeMethod.apply(this, arguments);
- });
-
- window.RTCPeerConnection.prototype[method] = methodObj[method];
- });
- }
-} // Attempt to fix ONN in plan-b mode.
-
-
-function fixNegotiationNeeded(window, browserDetails) {
- utils.wrapPeerConnectionEvent(window, 'negotiationneeded', function (e) {
- var pc = e.target;
-
- if (browserDetails.version < 72 || pc.getConfiguration && pc.getConfiguration().sdpSemantics === 'plan-b') {
- if (pc.signalingState !== 'stable') {
- return;
- }
- }
-
- return e;
- });
-}
-},{"../utils.js":"iSxC","./getusermedia":"s6SN","./getdisplaymedia":"VHa8"}],"NZ1C":[function(require,module,exports) {
-/*
- * Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.filterIceServers = filterIceServers;
-
-var utils = _interopRequireWildcard(require("../utils"));
-
-function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
-
-// Edge does not like
-// 1) stun: filtered after 14393 unless ?transport=udp is present
-// 2) turn: that does not have all of turn:host:port?transport=udp
-// 3) turn: with ipv6 addresses
-// 4) turn: occurring muliple times
-function filterIceServers(iceServers, edgeVersion) {
- var hasTurn = false;
- iceServers = JSON.parse(JSON.stringify(iceServers));
- return iceServers.filter(function (server) {
- if (server && (server.urls || server.url)) {
- var urls = server.urls || server.url;
-
- if (server.url && !server.urls) {
- utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls');
- }
-
- var isString = typeof urls === 'string';
-
- if (isString) {
- urls = [urls];
- }
-
- urls = urls.filter(function (url) {
- // filter STUN unconditionally.
- if (url.indexOf('stun:') === 0) {
- return false;
- }
-
- var validTurn = url.startsWith('turn') && !url.startsWith('turn:[') && url.includes('transport=udp');
-
- if (validTurn && !hasTurn) {
- hasTurn = true;
- return true;
- }
-
- return validTurn && !hasTurn;
- });
- delete server.url;
- server.urls = isString ? urls[0] : urls;
- return !!urls.length;
- }
- });
-}
-},{"../utils":"iSxC"}],"YHvh":[function(require,module,exports) {
-/* eslint-env node */
-'use strict';
-
-// SDP helpers.
-var SDPUtils = {};
-
-// Generate an alphanumeric identifier for cname or mids.
-// TODO: use UUIDs instead? https://gist.github.com/jed/982883
-SDPUtils.generateIdentifier = function() {
- return Math.random().toString(36).substr(2, 10);
-};
-
-// The RTCP CNAME used by all peerconnections from the same JS.
-SDPUtils.localCName = SDPUtils.generateIdentifier();
-
-// Splits SDP into lines, dealing with both CRLF and LF.
-SDPUtils.splitLines = function(blob) {
- return blob.trim().split('\n').map(function(line) {
- return line.trim();
- });
-};
-// Splits SDP into sessionpart and mediasections. Ensures CRLF.
-SDPUtils.splitSections = function(blob) {
- var parts = blob.split('\nm=');
- return parts.map(function(part, index) {
- return (index > 0 ? 'm=' + part : part).trim() + '\r\n';
- });
-};
-
-// returns the session description.
-SDPUtils.getDescription = function(blob) {
- var sections = SDPUtils.splitSections(blob);
- return sections && sections[0];
-};
-
-// returns the individual media sections.
-SDPUtils.getMediaSections = function(blob) {
- var sections = SDPUtils.splitSections(blob);
- sections.shift();
- return sections;
-};
-
-// Returns lines that start with a certain prefix.
-SDPUtils.matchPrefix = function(blob, prefix) {
- return SDPUtils.splitLines(blob).filter(function(line) {
- return line.indexOf(prefix) === 0;
- });
-};
-
-// Parses an ICE candidate line. Sample input:
-// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8
-// rport 55996"
-SDPUtils.parseCandidate = function(line) {
- var parts;
- // Parse both variants.
- if (line.indexOf('a=candidate:') === 0) {
- parts = line.substring(12).split(' ');
- } else {
- parts = line.substring(10).split(' ');
- }
-
- var candidate = {
- foundation: parts[0],
- component: parseInt(parts[1], 10),
- protocol: parts[2].toLowerCase(),
- priority: parseInt(parts[3], 10),
- ip: parts[4],
- address: parts[4], // address is an alias for ip.
- port: parseInt(parts[5], 10),
- // skip parts[6] == 'typ'
- type: parts[7]
- };
-
- for (var i = 8; i < parts.length; i += 2) {
- switch (parts[i]) {
- case 'raddr':
- candidate.relatedAddress = parts[i + 1];
- break;
- case 'rport':
- candidate.relatedPort = parseInt(parts[i + 1], 10);
- break;
- case 'tcptype':
- candidate.tcpType = parts[i + 1];
- break;
- case 'ufrag':
- candidate.ufrag = parts[i + 1]; // for backward compability.
- candidate.usernameFragment = parts[i + 1];
- break;
- default: // extension handling, in particular ufrag
- candidate[parts[i]] = parts[i + 1];
- break;
- }
- }
- return candidate;
-};
-
-// Translates a candidate object into SDP candidate attribute.
-SDPUtils.writeCandidate = function(candidate) {
- var sdp = [];
- sdp.push(candidate.foundation);
- sdp.push(candidate.component);
- sdp.push(candidate.protocol.toUpperCase());
- sdp.push(candidate.priority);
- sdp.push(candidate.address || candidate.ip);
- sdp.push(candidate.port);
-
- var type = candidate.type;
- sdp.push('typ');
- sdp.push(type);
- if (type !== 'host' && candidate.relatedAddress &&
- candidate.relatedPort) {
- sdp.push('raddr');
- sdp.push(candidate.relatedAddress);
- sdp.push('rport');
- sdp.push(candidate.relatedPort);
- }
- if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {
- sdp.push('tcptype');
- sdp.push(candidate.tcpType);
- }
- if (candidate.usernameFragment || candidate.ufrag) {
- sdp.push('ufrag');
- sdp.push(candidate.usernameFragment || candidate.ufrag);
- }
- return 'candidate:' + sdp.join(' ');
-};
-
-// Parses an ice-options line, returns an array of option tags.
-// a=ice-options:foo bar
-SDPUtils.parseIceOptions = function(line) {
- return line.substr(14).split(' ');
-};
-
-// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input:
-// a=rtpmap:111 opus/48000/2
-SDPUtils.parseRtpMap = function(line) {
- var parts = line.substr(9).split(' ');
- var parsed = {
- payloadType: parseInt(parts.shift(), 10) // was: id
- };
-
- parts = parts[0].split('/');
-
- parsed.name = parts[0];
- parsed.clockRate = parseInt(parts[1], 10); // was: clockrate
- parsed.channels = parts.length === 3 ? parseInt(parts[2], 10) : 1;
- // legacy alias, got renamed back to channels in ORTC.
- parsed.numChannels = parsed.channels;
- return parsed;
-};
-
-// Generate an a=rtpmap line from RTCRtpCodecCapability or
-// RTCRtpCodecParameters.
-SDPUtils.writeRtpMap = function(codec) {
- var pt = codec.payloadType;
- if (codec.preferredPayloadType !== undefined) {
- pt = codec.preferredPayloadType;
- }
- var channels = codec.channels || codec.numChannels || 1;
- return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +
- (channels !== 1 ? '/' + channels : '') + '\r\n';
-};
-
-// Parses an a=extmap line (headerextension from RFC 5285). Sample input:
-// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset
-// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset
-SDPUtils.parseExtmap = function(line) {
- var parts = line.substr(9).split(' ');
- return {
- id: parseInt(parts[0], 10),
- direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv',
- uri: parts[1]
- };
-};
-
-// Generates a=extmap line from RTCRtpHeaderExtensionParameters or
-// RTCRtpHeaderExtension.
-SDPUtils.writeExtmap = function(headerExtension) {
- return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +
- (headerExtension.direction && headerExtension.direction !== 'sendrecv'
- ? '/' + headerExtension.direction
- : '') +
- ' ' + headerExtension.uri + '\r\n';
-};
-
-// Parses an ftmp line, returns dictionary. Sample input:
-// a=fmtp:96 vbr=on;cng=on
-// Also deals with vbr=on; cng=on
-SDPUtils.parseFmtp = function(line) {
- var parsed = {};
- var kv;
- var parts = line.substr(line.indexOf(' ') + 1).split(';');
- for (var j = 0; j < parts.length; j++) {
- kv = parts[j].trim().split('=');
- parsed[kv[0].trim()] = kv[1];
- }
- return parsed;
-};
-
-// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters.
-SDPUtils.writeFmtp = function(codec) {
- var line = '';
- var pt = codec.payloadType;
- if (codec.preferredPayloadType !== undefined) {
- pt = codec.preferredPayloadType;
- }
- if (codec.parameters && Object.keys(codec.parameters).length) {
- var params = [];
- Object.keys(codec.parameters).forEach(function(param) {
- if (codec.parameters[param]) {
- params.push(param + '=' + codec.parameters[param]);
- } else {
- params.push(param);
- }
- });
- line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\r\n';
- }
- return line;
-};
-
-// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:
-// a=rtcp-fb:98 nack rpsi
-SDPUtils.parseRtcpFb = function(line) {
- var parts = line.substr(line.indexOf(' ') + 1).split(' ');
- return {
- type: parts.shift(),
- parameter: parts.join(' ')
- };
-};
-// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.
-SDPUtils.writeRtcpFb = function(codec) {
- var lines = '';
- var pt = codec.payloadType;
- if (codec.preferredPayloadType !== undefined) {
- pt = codec.preferredPayloadType;
- }
- if (codec.rtcpFeedback && codec.rtcpFeedback.length) {
- // FIXME: special handling for trr-int?
- codec.rtcpFeedback.forEach(function(fb) {
- lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +
- (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +
- '\r\n';
- });
- }
- return lines;
-};
-
-// Parses an RFC 5576 ssrc media attribute. Sample input:
-// a=ssrc:3735928559 cname:something
-SDPUtils.parseSsrcMedia = function(line) {
- var sp = line.indexOf(' ');
- var parts = {
- ssrc: parseInt(line.substr(7, sp - 7), 10)
- };
- var colon = line.indexOf(':', sp);
- if (colon > -1) {
- parts.attribute = line.substr(sp + 1, colon - sp - 1);
- parts.value = line.substr(colon + 1);
- } else {
- parts.attribute = line.substr(sp + 1);
- }
- return parts;
-};
-
-SDPUtils.parseSsrcGroup = function(line) {
- var parts = line.substr(13).split(' ');
- return {
- semantics: parts.shift(),
- ssrcs: parts.map(function(ssrc) {
- return parseInt(ssrc, 10);
- })
- };
-};
-
-// Extracts the MID (RFC 5888) from a media section.
-// returns the MID or undefined if no mid line was found.
-SDPUtils.getMid = function(mediaSection) {
- var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0];
- if (mid) {
- return mid.substr(6);
- }
-};
-
-SDPUtils.parseFingerprint = function(line) {
- var parts = line.substr(14).split(' ');
- return {
- algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge.
- value: parts[1]
- };
-};
-
-// Extracts DTLS parameters from SDP media section or sessionpart.
-// FIXME: for consistency with other functions this should only
-// get the fingerprint line as input. See also getIceParameters.
-SDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {
- var lines = SDPUtils.matchPrefix(mediaSection + sessionpart,
- 'a=fingerprint:');
- // Note: a=setup line is ignored since we use the 'auto' role.
- // Note2: 'algorithm' is not case sensitive except in Edge.
- return {
- role: 'auto',
- fingerprints: lines.map(SDPUtils.parseFingerprint)
- };
-};
-
-// Serializes DTLS parameters to SDP.
-SDPUtils.writeDtlsParameters = function(params, setupType) {
- var sdp = 'a=setup:' + setupType + '\r\n';
- params.fingerprints.forEach(function(fp) {
- sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\r\n';
- });
- return sdp;
-};
-
-// Parses a=crypto lines into
-// https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#dictionary-rtcsrtpsdesparameters-members
-SDPUtils.parseCryptoLine = function(line) {
- var parts = line.substr(9).split(' ');
- return {
- tag: parseInt(parts[0], 10),
- cryptoSuite: parts[1],
- keyParams: parts[2],
- sessionParams: parts.slice(3),
- };
-};
-
-SDPUtils.writeCryptoLine = function(parameters) {
- return 'a=crypto:' + parameters.tag + ' ' +
- parameters.cryptoSuite + ' ' +
- (typeof parameters.keyParams === 'object'
- ? SDPUtils.writeCryptoKeyParams(parameters.keyParams)
- : parameters.keyParams) +
- (parameters.sessionParams ? ' ' + parameters.sessionParams.join(' ') : '') +
- '\r\n';
-};
-
-// Parses the crypto key parameters into
-// https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#rtcsrtpkeyparam*
-SDPUtils.parseCryptoKeyParams = function(keyParams) {
- if (keyParams.indexOf('inline:') !== 0) {
- return null;
- }
- var parts = keyParams.substr(7).split('|');
- return {
- keyMethod: 'inline',
- keySalt: parts[0],
- lifeTime: parts[1],
- mkiValue: parts[2] ? parts[2].split(':')[0] : undefined,
- mkiLength: parts[2] ? parts[2].split(':')[1] : undefined,
- };
-};
-
-SDPUtils.writeCryptoKeyParams = function(keyParams) {
- return keyParams.keyMethod + ':'
- + keyParams.keySalt +
- (keyParams.lifeTime ? '|' + keyParams.lifeTime : '') +
- (keyParams.mkiValue && keyParams.mkiLength
- ? '|' + keyParams.mkiValue + ':' + keyParams.mkiLength
- : '');
-};
-
-// Extracts all SDES paramters.
-SDPUtils.getCryptoParameters = function(mediaSection, sessionpart) {
- var lines = SDPUtils.matchPrefix(mediaSection + sessionpart,
- 'a=crypto:');
- return lines.map(SDPUtils.parseCryptoLine);
-};
-
-// Parses ICE information from SDP media section or sessionpart.
-// FIXME: for consistency with other functions this should only
-// get the ice-ufrag and ice-pwd lines as input.
-SDPUtils.getIceParameters = function(mediaSection, sessionpart) {
- var ufrag = SDPUtils.matchPrefix(mediaSection + sessionpart,
- 'a=ice-ufrag:')[0];
- var pwd = SDPUtils.matchPrefix(mediaSection + sessionpart,
- 'a=ice-pwd:')[0];
- if (!(ufrag && pwd)) {
- return null;
- }
- return {
- usernameFragment: ufrag.substr(12),
- password: pwd.substr(10),
- };
-};
-
-// Serializes ICE parameters to SDP.
-SDPUtils.writeIceParameters = function(params) {
- return 'a=ice-ufrag:' + params.usernameFragment + '\r\n' +
- 'a=ice-pwd:' + params.password + '\r\n';
-};
-
-// Parses the SDP media section and returns RTCRtpParameters.
-SDPUtils.parseRtpParameters = function(mediaSection) {
- var description = {
- codecs: [],
- headerExtensions: [],
- fecMechanisms: [],
- rtcp: []
- };
- var lines = SDPUtils.splitLines(mediaSection);
- var mline = lines[0].split(' ');
- for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..]
- var pt = mline[i];
- var rtpmapline = SDPUtils.matchPrefix(
- mediaSection, 'a=rtpmap:' + pt + ' ')[0];
- if (rtpmapline) {
- var codec = SDPUtils.parseRtpMap(rtpmapline);
- var fmtps = SDPUtils.matchPrefix(
- mediaSection, 'a=fmtp:' + pt + ' ');
- // Only the first a=fmtp:<pt> is considered.
- codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};
- codec.rtcpFeedback = SDPUtils.matchPrefix(
- mediaSection, 'a=rtcp-fb:' + pt + ' ')
- .map(SDPUtils.parseRtcpFb);
- description.codecs.push(codec);
- // parse FEC mechanisms from rtpmap lines.
- switch (codec.name.toUpperCase()) {
- case 'RED':
- case 'ULPFEC':
- description.fecMechanisms.push(codec.name.toUpperCase());
- break;
- default: // only RED and ULPFEC are recognized as FEC mechanisms.
- break;
- }
- }
- }
- SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) {
- description.headerExtensions.push(SDPUtils.parseExtmap(line));
- });
- // FIXME: parse rtcp.
- return description;
-};
-
-// Generates parts of the SDP media section describing the capabilities /
-// parameters.
-SDPUtils.writeRtpDescription = function(kind, caps) {
- var sdp = '';
-
- // Build the mline.
- sdp += 'm=' + kind + ' ';
- sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.
- sdp += ' UDP/TLS/RTP/SAVPF ';
- sdp += caps.codecs.map(function(codec) {
- if (codec.preferredPayloadType !== undefined) {
- return codec.preferredPayloadType;
- }
- return codec.payloadType;
- }).join(' ') + '\r\n';
-
- sdp += 'c=IN IP4 0.0.0.0\r\n';
- sdp += 'a=rtcp:9 IN IP4 0.0.0.0\r\n';
-
- // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.
- caps.codecs.forEach(function(codec) {
- sdp += SDPUtils.writeRtpMap(codec);
- sdp += SDPUtils.writeFmtp(codec);
- sdp += SDPUtils.writeRtcpFb(codec);
- });
- var maxptime = 0;
- caps.codecs.forEach(function(codec) {
- if (codec.maxptime > maxptime) {
- maxptime = codec.maxptime;
- }
- });
- if (maxptime > 0) {
- sdp += 'a=maxptime:' + maxptime + '\r\n';
- }
- sdp += 'a=rtcp-mux\r\n';
-
- if (caps.headerExtensions) {
- caps.headerExtensions.forEach(function(extension) {
- sdp += SDPUtils.writeExtmap(extension);
- });
- }
- // FIXME: write fecMechanisms.
- return sdp;
-};
-
-// Parses the SDP media section and returns an array of
-// RTCRtpEncodingParameters.
-SDPUtils.parseRtpEncodingParameters = function(mediaSection) {
- var encodingParameters = [];
- var description = SDPUtils.parseRtpParameters(mediaSection);
- var hasRed = description.fecMechanisms.indexOf('RED') !== -1;
- var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;
-
- // filter a=ssrc:... cname:, ignore PlanB-msid
- var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')
- .map(function(line) {
- return SDPUtils.parseSsrcMedia(line);
- })
- .filter(function(parts) {
- return parts.attribute === 'cname';
- });
- var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;
- var secondarySsrc;
-
- var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')
- .map(function(line) {
- var parts = line.substr(17).split(' ');
- return parts.map(function(part) {
- return parseInt(part, 10);
- });
- });
- if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {
- secondarySsrc = flows[0][1];
- }
-
- description.codecs.forEach(function(codec) {
- if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {
- var encParam = {
- ssrc: primarySsrc,
- codecPayloadType: parseInt(codec.parameters.apt, 10)
- };
- if (primarySsrc && secondarySsrc) {
- encParam.rtx = {ssrc: secondarySsrc};
- }
- encodingParameters.push(encParam);
- if (hasRed) {
- encParam = JSON.parse(JSON.stringify(encParam));
- encParam.fec = {
- ssrc: primarySsrc,
- mechanism: hasUlpfec ? 'red+ulpfec' : 'red'
- };
- encodingParameters.push(encParam);
- }
- }
- });
- if (encodingParameters.length === 0 && primarySsrc) {
- encodingParameters.push({
- ssrc: primarySsrc
- });
- }
-
- // we support both b=AS and b=TIAS but interpret AS as TIAS.
- var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');
- if (bandwidth.length) {
- if (bandwidth[0].indexOf('b=TIAS:') === 0) {
- bandwidth = parseInt(bandwidth[0].substr(7), 10);
- } else if (bandwidth[0].indexOf('b=AS:') === 0) {
- // use formula from JSEP to convert b=AS to TIAS value.
- bandwidth = parseInt(bandwidth[0].substr(5), 10) * 1000 * 0.95
- - (50 * 40 * 8);
- } else {
- bandwidth = undefined;
- }
- encodingParameters.forEach(function(params) {
- params.maxBitrate = bandwidth;
- });
- }
- return encodingParameters;
-};
-
-// parses http://draft.ortc.org/#rtcrtcpparameters*
-SDPUtils.parseRtcpParameters = function(mediaSection) {
- var rtcpParameters = {};
-
- // Gets the first SSRC. Note tha with RTX there might be multiple
- // SSRCs.
- var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')
- .map(function(line) {
- return SDPUtils.parseSsrcMedia(line);
- })
- .filter(function(obj) {
- return obj.attribute === 'cname';
- })[0];
- if (remoteSsrc) {
- rtcpParameters.cname = remoteSsrc.value;
- rtcpParameters.ssrc = remoteSsrc.ssrc;
- }
-
- // Edge uses the compound attribute instead of reducedSize
- // compound is !reducedSize
- var rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize');
- rtcpParameters.reducedSize = rsize.length > 0;
- rtcpParameters.compound = rsize.length === 0;
-
- // parses the rtcp-mux attrіbute.
- // Note that Edge does not support unmuxed RTCP.
- var mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux');
- rtcpParameters.mux = mux.length > 0;
-
- return rtcpParameters;
-};
-
-// parses either a=msid: or a=ssrc:... msid lines and returns
-// the id of the MediaStream and MediaStreamTrack.
-SDPUtils.parseMsid = function(mediaSection) {
- var parts;
- var spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:');
- if (spec.length === 1) {
- parts = spec[0].substr(7).split(' ');
- return {stream: parts[0], track: parts[1]};
- }
- var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')
- .map(function(line) {
- return SDPUtils.parseSsrcMedia(line);
- })
- .filter(function(msidParts) {
- return msidParts.attribute === 'msid';
- });
- if (planB.length > 0) {
- parts = planB[0].value.split(' ');
- return {stream: parts[0], track: parts[1]};
- }
-};
-
-// SCTP
-// parses draft-ietf-mmusic-sctp-sdp-26 first and falls back
-// to draft-ietf-mmusic-sctp-sdp-05
-SDPUtils.parseSctpDescription = function(mediaSection) {
- var mline = SDPUtils.parseMLine(mediaSection);
- var maxSizeLine = SDPUtils.matchPrefix(mediaSection, 'a=max-message-size:');
- var maxMessageSize;
- if (maxSizeLine.length > 0) {
- maxMessageSize = parseInt(maxSizeLine[0].substr(19), 10);
- }
- if (isNaN(maxMessageSize)) {
- maxMessageSize = 65536;
- }
- var sctpPort = SDPUtils.matchPrefix(mediaSection, 'a=sctp-port:');
- if (sctpPort.length > 0) {
- return {
- port: parseInt(sctpPort[0].substr(12), 10),
- protocol: mline.fmt,
- maxMessageSize: maxMessageSize
- };
- }
- var sctpMapLines = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:');
- if (sctpMapLines.length > 0) {
- var parts = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:')[0]
- .substr(10)
- .split(' ');
- return {
- port: parseInt(parts[0], 10),
- protocol: parts[1],
- maxMessageSize: maxMessageSize
- };
- }
-};
-
-// SCTP
-// outputs the draft-ietf-mmusic-sctp-sdp-26 version that all browsers
-// support by now receiving in this format, unless we originally parsed
-// as the draft-ietf-mmusic-sctp-sdp-05 format (indicated by the m-line
-// protocol of DTLS/SCTP -- without UDP/ or TCP/)
-SDPUtils.writeSctpDescription = function(media, sctp) {
- var output = [];
- if (media.protocol !== 'DTLS/SCTP') {
- output = [
- 'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.protocol + '\r\n',
- 'c=IN IP4 0.0.0.0\r\n',
- 'a=sctp-port:' + sctp.port + '\r\n'
- ];
- } else {
- output = [
- 'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.port + '\r\n',
- 'c=IN IP4 0.0.0.0\r\n',
- 'a=sctpmap:' + sctp.port + ' ' + sctp.protocol + ' 65535\r\n'
- ];
- }
- if (sctp.maxMessageSize !== undefined) {
- output.push('a=max-message-size:' + sctp.maxMessageSize + '\r\n');
- }
- return output.join('');
-};
-
-// Generate a session ID for SDP.
-// https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1
-// recommends using a cryptographically random +ve 64-bit value
-// but right now this should be acceptable and within the right range
-SDPUtils.generateSessionId = function() {
- return Math.random().toString().substr(2, 21);
-};
-
-// Write boilder plate for start of SDP
-// sessId argument is optional - if not supplied it will
-// be generated randomly
-// sessVersion is optional and defaults to 2
-// sessUser is optional and defaults to 'thisisadapterortc'
-SDPUtils.writeSessionBoilerplate = function(sessId, sessVer, sessUser) {
- var sessionId;
- var version = sessVer !== undefined ? sessVer : 2;
- if (sessId) {
- sessionId = sessId;
- } else {
- sessionId = SDPUtils.generateSessionId();
- }
- var user = sessUser || 'thisisadapterortc';
- // FIXME: sess-id should be an NTP timestamp.
- return 'v=0\r\n' +
- 'o=' + user + ' ' + sessionId + ' ' + version +
- ' IN IP4 127.0.0.1\r\n' +
- 's=-\r\n' +
- 't=0 0\r\n';
-};
-
-SDPUtils.writeMediaSection = function(transceiver, caps, type, stream) {
- var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);
-
- // Map ICE parameters (ufrag, pwd) to SDP.
- sdp += SDPUtils.writeIceParameters(
- transceiver.iceGatherer.getLocalParameters());
-
- // Map DTLS parameters to SDP.
- sdp += SDPUtils.writeDtlsParameters(
- transceiver.dtlsTransport.getLocalParameters(),
- type === 'offer' ? 'actpass' : 'active');
-
- sdp += 'a=mid:' + transceiver.mid + '\r\n';
-
- if (transceiver.direction) {
- sdp += 'a=' + transceiver.direction + '\r\n';
- } else if (transceiver.rtpSender && transceiver.rtpReceiver) {
- sdp += 'a=sendrecv\r\n';
- } else if (transceiver.rtpSender) {
- sdp += 'a=sendonly\r\n';
- } else if (transceiver.rtpReceiver) {
- sdp += 'a=recvonly\r\n';
- } else {
- sdp += 'a=inactive\r\n';
- }
-
- if (transceiver.rtpSender) {
- // spec.
- var msid = 'msid:' + stream.id + ' ' +
- transceiver.rtpSender.track.id + '\r\n';
- sdp += 'a=' + msid;
-
- // for Chrome.
- sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
- ' ' + msid;
- if (transceiver.sendEncodingParameters[0].rtx) {
- sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
- ' ' + msid;
- sdp += 'a=ssrc-group:FID ' +
- transceiver.sendEncodingParameters[0].ssrc + ' ' +
- transceiver.sendEncodingParameters[0].rtx.ssrc +
- '\r\n';
- }
- }
- // FIXME: this should be written by writeRtpDescription.
- sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +
- ' cname:' + SDPUtils.localCName + '\r\n';
- if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {
- sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +
- ' cname:' + SDPUtils.localCName + '\r\n';
- }
- return sdp;
-};
-
-// Gets the direction from the mediaSection or the sessionpart.
-SDPUtils.getDirection = function(mediaSection, sessionpart) {
- // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.
- var lines = SDPUtils.splitLines(mediaSection);
- for (var i = 0; i < lines.length; i++) {
- switch (lines[i]) {
- case 'a=sendrecv':
- case 'a=sendonly':
- case 'a=recvonly':
- case 'a=inactive':
- return lines[i].substr(2);
- default:
- // FIXME: What should happen here?
- }
- }
- if (sessionpart) {
- return SDPUtils.getDirection(sessionpart);
- }
- return 'sendrecv';
-};
-
-SDPUtils.getKind = function(mediaSection) {
- var lines = SDPUtils.splitLines(mediaSection);
- var mline = lines[0].split(' ');
- return mline[0].substr(2);
-};
-
-SDPUtils.isRejected = function(mediaSection) {
- return mediaSection.split(' ', 2)[1] === '0';
-};
-
-SDPUtils.parseMLine = function(mediaSection) {
- var lines = SDPUtils.splitLines(mediaSection);
- var parts = lines[0].substr(2).split(' ');
- return {
- kind: parts[0],
- port: parseInt(parts[1], 10),
- protocol: parts[2],
- fmt: parts.slice(3).join(' ')
- };
-};
-
-SDPUtils.parseOLine = function(mediaSection) {
- var line = SDPUtils.matchPrefix(mediaSection, 'o=')[0];
- var parts = line.substr(2).split(' ');
- return {
- username: parts[0],
- sessionId: parts[1],
- sessionVersion: parseInt(parts[2], 10),
- netType: parts[3],
- addressType: parts[4],
- address: parts[5]
- };
-};
-
-// a very naive interpretation of a valid SDP.
-SDPUtils.isValidSDP = function(blob) {
- if (typeof blob !== 'string' || blob.length === 0) {
- return false;
- }
- var lines = SDPUtils.splitLines(blob);
- for (var i = 0; i < lines.length; i++) {
- if (lines[i].length < 2 || lines[i].charAt(1) !== '=') {
- return false;
- }
- // TODO: check the modifier a bit more.
- }
- return true;
-};
-
-// Expose public methods.
-if (typeof module === 'object') {
- module.exports = SDPUtils;
-}
-
-},{}],"NJ2u":[function(require,module,exports) {
-/*
- * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-var SDPUtils = require('sdp');
-
-function fixStatsType(stat) {
- return {
- inboundrtp: 'inbound-rtp',
- outboundrtp: 'outbound-rtp',
- candidatepair: 'candidate-pair',
- localcandidate: 'local-candidate',
- remotecandidate: 'remote-candidate'
- }[stat.type] || stat.type;
-}
-
-function writeMediaSection(transceiver, caps, type, stream, dtlsRole) {
- var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps); // Map ICE parameters (ufrag, pwd) to SDP.
-
- sdp += SDPUtils.writeIceParameters(transceiver.iceGatherer.getLocalParameters()); // Map DTLS parameters to SDP.
-
- sdp += SDPUtils.writeDtlsParameters(transceiver.dtlsTransport.getLocalParameters(), type === 'offer' ? 'actpass' : dtlsRole || 'active');
- sdp += 'a=mid:' + transceiver.mid + '\r\n';
-
- if (transceiver.rtpSender && transceiver.rtpReceiver) {
- sdp += 'a=sendrecv\r\n';
- } else if (transceiver.rtpSender) {
- sdp += 'a=sendonly\r\n';
- } else if (transceiver.rtpReceiver) {
- sdp += 'a=recvonly\r\n';
- } else {
- sdp += 'a=inactive\r\n';
- }
-
- if (transceiver.rtpSender) {
- var trackId = transceiver.rtpSender._initialTrackId || transceiver.rtpSender.track.id;
- transceiver.rtpSender._initialTrackId = trackId; // spec.
-
- var msid = 'msid:' + (stream ? stream.id : '-') + ' ' + trackId + '\r\n';
- sdp += 'a=' + msid; // for Chrome. Legacy should no longer be required.
-
- sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + ' ' + msid; // RTX
-
- if (transceiver.sendEncodingParameters[0].rtx) {
- sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + ' ' + msid;
- sdp += 'a=ssrc-group:FID ' + transceiver.sendEncodingParameters[0].ssrc + ' ' + transceiver.sendEncodingParameters[0].rtx.ssrc + '\r\n';
- }
- } // FIXME: this should be written by writeRtpDescription.
-
-
- sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + ' cname:' + SDPUtils.localCName + '\r\n';
-
- if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {
- sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + ' cname:' + SDPUtils.localCName + '\r\n';
- }
-
- return sdp;
-} // Edge does not like
-// 1) stun: filtered after 14393 unless ?transport=udp is present
-// 2) turn: that does not have all of turn:host:port?transport=udp
-// 3) turn: with ipv6 addresses
-// 4) turn: occurring muliple times
-
-
-function filterIceServers(iceServers, edgeVersion) {
- var hasTurn = false;
- iceServers = JSON.parse(JSON.stringify(iceServers));
- return iceServers.filter(function (server) {
- if (server && (server.urls || server.url)) {
- var urls = server.urls || server.url;
-
- if (server.url && !server.urls) {
- console.warn('RTCIceServer.url is deprecated! Use urls instead.');
- }
-
- var isString = typeof urls === 'string';
-
- if (isString) {
- urls = [urls];
- }
-
- urls = urls.filter(function (url) {
- var validTurn = url.indexOf('turn:') === 0 && url.indexOf('transport=udp') !== -1 && url.indexOf('turn:[') === -1 && !hasTurn;
-
- if (validTurn) {
- hasTurn = true;
- return true;
- }
-
- return url.indexOf('stun:') === 0 && edgeVersion >= 14393 && url.indexOf('?transport=udp') === -1;
- });
- delete server.url;
- server.urls = isString ? urls[0] : urls;
- return !!urls.length;
- }
- });
-} // Determines the intersection of local and remote capabilities.
-
-
-function getCommonCapabilities(localCapabilities, remoteCapabilities) {
- var commonCapabilities = {
- codecs: [],
- headerExtensions: [],
- fecMechanisms: []
- };
-
- var findCodecByPayloadType = function (pt, codecs) {
- pt = parseInt(pt, 10);
-
- for (var i = 0; i < codecs.length; i++) {
- if (codecs[i].payloadType === pt || codecs[i].preferredPayloadType === pt) {
- return codecs[i];
- }
- }
- };
-
- var rtxCapabilityMatches = function (lRtx, rRtx, lCodecs, rCodecs) {
- var lCodec = findCodecByPayloadType(lRtx.parameters.apt, lCodecs);
- var rCodec = findCodecByPayloadType(rRtx.parameters.apt, rCodecs);
- return lCodec && rCodec && lCodec.name.toLowerCase() === rCodec.name.toLowerCase();
- };
-
- localCapabilities.codecs.forEach(function (lCodec) {
- for (var i = 0; i < remoteCapabilities.codecs.length; i++) {
- var rCodec = remoteCapabilities.codecs[i];
-
- if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() && lCodec.clockRate === rCodec.clockRate) {
- if (lCodec.name.toLowerCase() === 'rtx' && lCodec.parameters && rCodec.parameters.apt) {
- // for RTX we need to find the local rtx that has a apt
- // which points to the same local codec as the remote one.
- if (!rtxCapabilityMatches(lCodec, rCodec, localCapabilities.codecs, remoteCapabilities.codecs)) {
- continue;
- }
- }
-
- rCodec = JSON.parse(JSON.stringify(rCodec)); // deepcopy
- // number of channels is the highest common number of channels
-
- rCodec.numChannels = Math.min(lCodec.numChannels, rCodec.numChannels); // push rCodec so we reply with offerer payload type
-
- commonCapabilities.codecs.push(rCodec); // determine common feedback mechanisms
-
- rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function (fb) {
- for (var j = 0; j < lCodec.rtcpFeedback.length; j++) {
- if (lCodec.rtcpFeedback[j].type === fb.type && lCodec.rtcpFeedback[j].parameter === fb.parameter) {
- return true;
- }
- }
-
- return false;
- }); // FIXME: also need to determine .parameters
- // see https://github.com/openpeer/ortc/issues/569
-
- break;
- }
- }
- });
- localCapabilities.headerExtensions.forEach(function (lHeaderExtension) {
- for (var i = 0; i < remoteCapabilities.headerExtensions.length; i++) {
- var rHeaderExtension = remoteCapabilities.headerExtensions[i];
-
- if (lHeaderExtension.uri === rHeaderExtension.uri) {
- commonCapabilities.headerExtensions.push(rHeaderExtension);
- break;
- }
- }
- }); // FIXME: fecMechanisms
-
- return commonCapabilities;
-} // is action=setLocalDescription with type allowed in signalingState
-
-
-function isActionAllowedInSignalingState(action, type, signalingState) {
- return {
- offer: {
- setLocalDescription: ['stable', 'have-local-offer'],
- setRemoteDescription: ['stable', 'have-remote-offer']
- },
- answer: {
- setLocalDescription: ['have-remote-offer', 'have-local-pranswer'],
- setRemoteDescription: ['have-local-offer', 'have-remote-pranswer']
- }
- }[type][action].indexOf(signalingState) !== -1;
-}
-
-function maybeAddCandidate(iceTransport, candidate) {
- // Edge's internal representation adds some fields therefore
- // not all fieldѕ are taken into account.
- var alreadyAdded = iceTransport.getRemoteCandidates().find(function (remoteCandidate) {
- return candidate.foundation === remoteCandidate.foundation && candidate.ip === remoteCandidate.ip && candidate.port === remoteCandidate.port && candidate.priority === remoteCandidate.priority && candidate.protocol === remoteCandidate.protocol && candidate.type === remoteCandidate.type;
- });
-
- if (!alreadyAdded) {
- iceTransport.addRemoteCandidate(candidate);
- }
-
- return !alreadyAdded;
-}
-
-function makeError(name, description) {
- var e = new Error(description);
- e.name = name; // legacy error codes from https://heycam.github.io/webidl/#idl-DOMException-error-names
-
- e.code = {
- NotSupportedError: 9,
- InvalidStateError: 11,
- InvalidAccessError: 15,
- TypeError: undefined,
- OperationError: undefined
- }[name];
- return e;
-}
-
-module.exports = function (window, edgeVersion) {
- // https://w3c.github.io/mediacapture-main/#mediastream
- // Helper function to add the track to the stream and
- // dispatch the event ourselves.
- function addTrackToStreamAndFireEvent(track, stream) {
- stream.addTrack(track);
- stream.dispatchEvent(new window.MediaStreamTrackEvent('addtrack', {
- track: track
- }));
- }
-
- function removeTrackFromStreamAndFireEvent(track, stream) {
- stream.removeTrack(track);
- stream.dispatchEvent(new window.MediaStreamTrackEvent('removetrack', {
- track: track
- }));
- }
-
- function fireAddTrack(pc, track, receiver, streams) {
- var trackEvent = new Event('track');
- trackEvent.track = track;
- trackEvent.receiver = receiver;
- trackEvent.transceiver = {
- receiver: receiver
- };
- trackEvent.streams = streams;
- window.setTimeout(function () {
- pc._dispatchEvent('track', trackEvent);
- });
- }
-
- var RTCPeerConnection = function (config) {
- var pc = this;
-
- var _eventTarget = document.createDocumentFragment();
-
- ['addEventListener', 'removeEventListener', 'dispatchEvent'].forEach(function (method) {
- pc[method] = _eventTarget[method].bind(_eventTarget);
- });
- this.canTrickleIceCandidates = null;
- this.needNegotiation = false;
- this.localStreams = [];
- this.remoteStreams = [];
- this._localDescription = null;
- this._remoteDescription = null;
- this.signalingState = 'stable';
- this.iceConnectionState = 'new';
- this.connectionState = 'new';
- this.iceGatheringState = 'new';
- config = JSON.parse(JSON.stringify(config || {}));
- this.usingBundle = config.bundlePolicy === 'max-bundle';
-
- if (config.rtcpMuxPolicy === 'negotiate') {
- throw makeError('NotSupportedError', 'rtcpMuxPolicy \'negotiate\' is not supported');
- } else if (!config.rtcpMuxPolicy) {
- config.rtcpMuxPolicy = 'require';
- }
-
- switch (config.iceTransportPolicy) {
- case 'all':
- case 'relay':
- break;
-
- default:
- config.iceTransportPolicy = 'all';
- break;
- }
-
- switch (config.bundlePolicy) {
- case 'balanced':
- case 'max-compat':
- case 'max-bundle':
- break;
-
- default:
- config.bundlePolicy = 'balanced';
- break;
- }
-
- config.iceServers = filterIceServers(config.iceServers || [], edgeVersion);
- this._iceGatherers = [];
-
- if (config.iceCandidatePoolSize) {
- for (var i = config.iceCandidatePoolSize; i > 0; i--) {
- this._iceGatherers.push(new window.RTCIceGatherer({
- iceServers: config.iceServers,
- gatherPolicy: config.iceTransportPolicy
- }));
- }
- } else {
- config.iceCandidatePoolSize = 0;
- }
-
- this._config = config; // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...
- // everything that is needed to describe a SDP m-line.
-
- this.transceivers = [];
- this._sdpSessionId = SDPUtils.generateSessionId();
- this._sdpSessionVersion = 0;
- this._dtlsRole = undefined; // role for a=setup to use in answers.
-
- this._isClosed = false;
- };
-
- Object.defineProperty(RTCPeerConnection.prototype, 'localDescription', {
- configurable: true,
- get: function () {
- return this._localDescription;
- }
- });
- Object.defineProperty(RTCPeerConnection.prototype, 'remoteDescription', {
- configurable: true,
- get: function () {
- return this._remoteDescription;
- }
- }); // set up event handlers on prototype
-
- RTCPeerConnection.prototype.onicecandidate = null;
- RTCPeerConnection.prototype.onaddstream = null;
- RTCPeerConnection.prototype.ontrack = null;
- RTCPeerConnection.prototype.onremovestream = null;
- RTCPeerConnection.prototype.onsignalingstatechange = null;
- RTCPeerConnection.prototype.oniceconnectionstatechange = null;
- RTCPeerConnection.prototype.onconnectionstatechange = null;
- RTCPeerConnection.prototype.onicegatheringstatechange = null;
- RTCPeerConnection.prototype.onnegotiationneeded = null;
- RTCPeerConnection.prototype.ondatachannel = null;
-
- RTCPeerConnection.prototype._dispatchEvent = function (name, event) {
- if (this._isClosed) {
- return;
- }
-
- this.dispatchEvent(event);
-
- if (typeof this['on' + name] === 'function') {
- this['on' + name](event);
- }
- };
-
- RTCPeerConnection.prototype._emitGatheringStateChange = function () {
- var event = new Event('icegatheringstatechange');
-
- this._dispatchEvent('icegatheringstatechange', event);
- };
-
- RTCPeerConnection.prototype.getConfiguration = function () {
- return this._config;
- };
-
- RTCPeerConnection.prototype.getLocalStreams = function () {
- return this.localStreams;
- };
-
- RTCPeerConnection.prototype.getRemoteStreams = function () {
- return this.remoteStreams;
- }; // internal helper to create a transceiver object.
- // (which is not yet the same as the WebRTC 1.0 transceiver)
-
-
- RTCPeerConnection.prototype._createTransceiver = function (kind, doNotAdd) {
- var hasBundleTransport = this.transceivers.length > 0;
- var transceiver = {
- track: null,
- iceGatherer: null,
- iceTransport: null,
- dtlsTransport: null,
- localCapabilities: null,
- remoteCapabilities: null,
- rtpSender: null,
- rtpReceiver: null,
- kind: kind,
- mid: null,
- sendEncodingParameters: null,
- recvEncodingParameters: null,
- stream: null,
- associatedRemoteMediaStreams: [],
- wantReceive: true
- };
-
- if (this.usingBundle && hasBundleTransport) {
- transceiver.iceTransport = this.transceivers[0].iceTransport;
- transceiver.dtlsTransport = this.transceivers[0].dtlsTransport;
- } else {
- var transports = this._createIceAndDtlsTransports();
-
- transceiver.iceTransport = transports.iceTransport;
- transceiver.dtlsTransport = transports.dtlsTransport;
- }
-
- if (!doNotAdd) {
- this.transceivers.push(transceiver);
- }
-
- return transceiver;
- };
-
- RTCPeerConnection.prototype.addTrack = function (track, stream) {
- if (this._isClosed) {
- throw makeError('InvalidStateError', 'Attempted to call addTrack on a closed peerconnection.');
- }
-
- var alreadyExists = this.transceivers.find(function (s) {
- return s.track === track;
- });
-
- if (alreadyExists) {
- throw makeError('InvalidAccessError', 'Track already exists.');
- }
-
- var transceiver;
-
- for (var i = 0; i < this.transceivers.length; i++) {
- if (!this.transceivers[i].track && this.transceivers[i].kind === track.kind) {
- transceiver = this.transceivers[i];
- }
- }
-
- if (!transceiver) {
- transceiver = this._createTransceiver(track.kind);
- }
-
- this._maybeFireNegotiationNeeded();
-
- if (this.localStreams.indexOf(stream) === -1) {
- this.localStreams.push(stream);
- }
-
- transceiver.track = track;
- transceiver.stream = stream;
- transceiver.rtpSender = new window.RTCRtpSender(track, transceiver.dtlsTransport);
- return transceiver.rtpSender;
- };
-
- RTCPeerConnection.prototype.addStream = function (stream) {
- var pc = this;
-
- if (edgeVersion >= 15025) {
- stream.getTracks().forEach(function (track) {
- pc.addTrack(track, stream);
- });
- } else {
- // Clone is necessary for local demos mostly, attaching directly
- // to two different senders does not work (build 10547).
- // Fixed in 15025 (or earlier)
- var clonedStream = stream.clone();
- stream.getTracks().forEach(function (track, idx) {
- var clonedTrack = clonedStream.getTracks()[idx];
- track.addEventListener('enabled', function (event) {
- clonedTrack.enabled = event.enabled;
- });
- });
- clonedStream.getTracks().forEach(function (track) {
- pc.addTrack(track, clonedStream);
- });
- }
- };
-
- RTCPeerConnection.prototype.removeTrack = function (sender) {
- if (this._isClosed) {
- throw makeError('InvalidStateError', 'Attempted to call removeTrack on a closed peerconnection.');
- }
-
- if (!(sender instanceof window.RTCRtpSender)) {
- throw new TypeError('Argument 1 of RTCPeerConnection.removeTrack ' + 'does not implement interface RTCRtpSender.');
- }
-
- var transceiver = this.transceivers.find(function (t) {
- return t.rtpSender === sender;
- });
-
- if (!transceiver) {
- throw makeError('InvalidAccessError', 'Sender was not created by this connection.');
- }
-
- var stream = transceiver.stream;
- transceiver.rtpSender.stop();
- transceiver.rtpSender = null;
- transceiver.track = null;
- transceiver.stream = null; // remove the stream from the set of local streams
-
- var localStreams = this.transceivers.map(function (t) {
- return t.stream;
- });
-
- if (localStreams.indexOf(stream) === -1 && this.localStreams.indexOf(stream) > -1) {
- this.localStreams.splice(this.localStreams.indexOf(stream), 1);
- }
-
- this._maybeFireNegotiationNeeded();
- };
-
- RTCPeerConnection.prototype.removeStream = function (stream) {
- var pc = this;
- stream.getTracks().forEach(function (track) {
- var sender = pc.getSenders().find(function (s) {
- return s.track === track;
- });
-
- if (sender) {
- pc.removeTrack(sender);
- }
- });
- };
-
- RTCPeerConnection.prototype.getSenders = function () {
- return this.transceivers.filter(function (transceiver) {
- return !!transceiver.rtpSender;
- }).map(function (transceiver) {
- return transceiver.rtpSender;
- });
- };
-
- RTCPeerConnection.prototype.getReceivers = function () {
- return this.transceivers.filter(function (transceiver) {
- return !!transceiver.rtpReceiver;
- }).map(function (transceiver) {
- return transceiver.rtpReceiver;
- });
- };
-
- RTCPeerConnection.prototype._createIceGatherer = function (sdpMLineIndex, usingBundle) {
- var pc = this;
-
- if (usingBundle && sdpMLineIndex > 0) {
- return this.transceivers[0].iceGatherer;
- } else if (this._iceGatherers.length) {
- return this._iceGatherers.shift();
- }
-
- var iceGatherer = new window.RTCIceGatherer({
- iceServers: this._config.iceServers,
- gatherPolicy: this._config.iceTransportPolicy
- });
- Object.defineProperty(iceGatherer, 'state', {
- value: 'new',
- writable: true
- });
- this.transceivers[sdpMLineIndex].bufferedCandidateEvents = [];
-
- this.transceivers[sdpMLineIndex].bufferCandidates = function (event) {
- var end = !event.candidate || Object.keys(event.candidate).length === 0; // polyfill since RTCIceGatherer.state is not implemented in
- // Edge 10547 yet.
-
- iceGatherer.state = end ? 'completed' : 'gathering';
-
- if (pc.transceivers[sdpMLineIndex].bufferedCandidateEvents !== null) {
- pc.transceivers[sdpMLineIndex].bufferedCandidateEvents.push(event);
- }
- };
-
- iceGatherer.addEventListener('localcandidate', this.transceivers[sdpMLineIndex].bufferCandidates);
- return iceGatherer;
- }; // start gathering from an RTCIceGatherer.
-
-
- RTCPeerConnection.prototype._gather = function (mid, sdpMLineIndex) {
- var pc = this;
- var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer;
-
- if (iceGatherer.onlocalcandidate) {
- return;
- }
-
- var bufferedCandidateEvents = this.transceivers[sdpMLineIndex].bufferedCandidateEvents;
- this.transceivers[sdpMLineIndex].bufferedCandidateEvents = null;
- iceGatherer.removeEventListener('localcandidate', this.transceivers[sdpMLineIndex].bufferCandidates);
-
- iceGatherer.onlocalcandidate = function (evt) {
- if (pc.usingBundle && sdpMLineIndex > 0) {
- // if we know that we use bundle we can drop candidates with
- // ѕdpMLineIndex > 0. If we don't do this then our state gets
- // confused since we dispose the extra ice gatherer.
- return;
- }
-
- var event = new Event('icecandidate');
- event.candidate = {
- sdpMid: mid,
- sdpMLineIndex: sdpMLineIndex
- };
- var cand = evt.candidate; // Edge emits an empty object for RTCIceCandidateComplete‥
-
- var end = !cand || Object.keys(cand).length === 0;
-
- if (end) {
- // polyfill since RTCIceGatherer.state is not implemented in
- // Edge 10547 yet.
- if (iceGatherer.state === 'new' || iceGatherer.state === 'gathering') {
- iceGatherer.state = 'completed';
- }
- } else {
- if (iceGatherer.state === 'new') {
- iceGatherer.state = 'gathering';
- } // RTCIceCandidate doesn't have a component, needs to be added
-
-
- cand.component = 1; // also the usernameFragment. TODO: update SDP to take both variants.
-
- cand.ufrag = iceGatherer.getLocalParameters().usernameFragment;
- var serializedCandidate = SDPUtils.writeCandidate(cand);
- event.candidate = Object.assign(event.candidate, SDPUtils.parseCandidate(serializedCandidate));
- event.candidate.candidate = serializedCandidate;
-
- event.candidate.toJSON = function () {
- return {
- candidate: event.candidate.candidate,
- sdpMid: event.candidate.sdpMid,
- sdpMLineIndex: event.candidate.sdpMLineIndex,
- usernameFragment: event.candidate.usernameFragment
- };
- };
- } // update local description.
-
-
- var sections = SDPUtils.getMediaSections(pc._localDescription.sdp);
-
- if (!end) {
- sections[event.candidate.sdpMLineIndex] += 'a=' + event.candidate.candidate + '\r\n';
- } else {
- sections[event.candidate.sdpMLineIndex] += 'a=end-of-candidates\r\n';
- }
-
- pc._localDescription.sdp = SDPUtils.getDescription(pc._localDescription.sdp) + sections.join('');
- var complete = pc.transceivers.every(function (transceiver) {
- return transceiver.iceGatherer && transceiver.iceGatherer.state === 'completed';
- });
-
- if (pc.iceGatheringState !== 'gathering') {
- pc.iceGatheringState = 'gathering';
-
- pc._emitGatheringStateChange();
- } // Emit candidate. Also emit null candidate when all gatherers are
- // complete.
-
-
- if (!end) {
- pc._dispatchEvent('icecandidate', event);
- }
-
- if (complete) {
- pc._dispatchEvent('icecandidate', new Event('icecandidate'));
-
- pc.iceGatheringState = 'complete';
-
- pc._emitGatheringStateChange();
- }
- }; // emit already gathered candidates.
-
-
- window.setTimeout(function () {
- bufferedCandidateEvents.forEach(function (e) {
- iceGatherer.onlocalcandidate(e);
- });
- }, 0);
- }; // Create ICE transport and DTLS transport.
-
-
- RTCPeerConnection.prototype._createIceAndDtlsTransports = function () {
- var pc = this;
- var iceTransport = new window.RTCIceTransport(null);
-
- iceTransport.onicestatechange = function () {
- pc._updateIceConnectionState();
-
- pc._updateConnectionState();
- };
-
- var dtlsTransport = new window.RTCDtlsTransport(iceTransport);
-
- dtlsTransport.ondtlsstatechange = function () {
- pc._updateConnectionState();
- };
-
- dtlsTransport.onerror = function () {
- // onerror does not set state to failed by itself.
- Object.defineProperty(dtlsTransport, 'state', {
- value: 'failed',
- writable: true
- });
-
- pc._updateConnectionState();
- };
-
- return {
- iceTransport: iceTransport,
- dtlsTransport: dtlsTransport
- };
- }; // Destroy ICE gatherer, ICE transport and DTLS transport.
- // Without triggering the callbacks.
-
-
- RTCPeerConnection.prototype._disposeIceAndDtlsTransports = function (sdpMLineIndex) {
- var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer;
-
- if (iceGatherer) {
- delete iceGatherer.onlocalcandidate;
- delete this.transceivers[sdpMLineIndex].iceGatherer;
- }
-
- var iceTransport = this.transceivers[sdpMLineIndex].iceTransport;
-
- if (iceTransport) {
- delete iceTransport.onicestatechange;
- delete this.transceivers[sdpMLineIndex].iceTransport;
- }
-
- var dtlsTransport = this.transceivers[sdpMLineIndex].dtlsTransport;
-
- if (dtlsTransport) {
- delete dtlsTransport.ondtlsstatechange;
- delete dtlsTransport.onerror;
- delete this.transceivers[sdpMLineIndex].dtlsTransport;
- }
- }; // Start the RTP Sender and Receiver for a transceiver.
-
-
- RTCPeerConnection.prototype._transceive = function (transceiver, send, recv) {
- var params = getCommonCapabilities(transceiver.localCapabilities, transceiver.remoteCapabilities);
-
- if (send && transceiver.rtpSender) {
- params.encodings = transceiver.sendEncodingParameters;
- params.rtcp = {
- cname: SDPUtils.localCName,
- compound: transceiver.rtcpParameters.compound
- };
-
- if (transceiver.recvEncodingParameters.length) {
- params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;
- }
-
- transceiver.rtpSender.send(params);
- }
-
- if (recv && transceiver.rtpReceiver && params.codecs.length > 0) {
- // remove RTX field in Edge 14942
- if (transceiver.kind === 'video' && transceiver.recvEncodingParameters && edgeVersion < 15019) {
- transceiver.recvEncodingParameters.forEach(function (p) {
- delete p.rtx;
- });
- }
-
- if (transceiver.recvEncodingParameters.length) {
- params.encodings = transceiver.recvEncodingParameters;
- } else {
- params.encodings = [{}];
- }
-
- params.rtcp = {
- compound: transceiver.rtcpParameters.compound
- };
-
- if (transceiver.rtcpParameters.cname) {
- params.rtcp.cname = transceiver.rtcpParameters.cname;
- }
-
- if (transceiver.sendEncodingParameters.length) {
- params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;
- }
-
- transceiver.rtpReceiver.receive(params);
- }
- };
-
- RTCPeerConnection.prototype.setLocalDescription = function (description) {
- var pc = this; // Note: pranswer is not supported.
-
- if (['offer', 'answer'].indexOf(description.type) === -1) {
- return Promise.reject(makeError('TypeError', 'Unsupported type "' + description.type + '"'));
- }
-
- if (!isActionAllowedInSignalingState('setLocalDescription', description.type, pc.signalingState) || pc._isClosed) {
- return Promise.reject(makeError('InvalidStateError', 'Can not set local ' + description.type + ' in state ' + pc.signalingState));
- }
-
- var sections;
- var sessionpart;
-
- if (description.type === 'offer') {
- // VERY limited support for SDP munging. Limited to:
- // * changing the order of codecs
- sections = SDPUtils.splitSections(description.sdp);
- sessionpart = sections.shift();
- sections.forEach(function (mediaSection, sdpMLineIndex) {
- var caps = SDPUtils.parseRtpParameters(mediaSection);
- pc.transceivers[sdpMLineIndex].localCapabilities = caps;
- });
- pc.transceivers.forEach(function (transceiver, sdpMLineIndex) {
- pc._gather(transceiver.mid, sdpMLineIndex);
- });
- } else if (description.type === 'answer') {
- sections = SDPUtils.splitSections(pc._remoteDescription.sdp);
- sessionpart = sections.shift();
- var isIceLite = SDPUtils.matchPrefix(sessionpart, 'a=ice-lite').length > 0;
- sections.forEach(function (mediaSection, sdpMLineIndex) {
- var transceiver = pc.transceivers[sdpMLineIndex];
- var iceGatherer = transceiver.iceGatherer;
- var iceTransport = transceiver.iceTransport;
- var dtlsTransport = transceiver.dtlsTransport;
- var localCapabilities = transceiver.localCapabilities;
- var remoteCapabilities = transceiver.remoteCapabilities; // treat bundle-only as not-rejected.
-
- var rejected = SDPUtils.isRejected(mediaSection) && SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0;
-
- if (!rejected && !transceiver.rejected) {
- var remoteIceParameters = SDPUtils.getIceParameters(mediaSection, sessionpart);
- var remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection, sessionpart);
-
- if (isIceLite) {
- remoteDtlsParameters.role = 'server';
- }
-
- if (!pc.usingBundle || sdpMLineIndex === 0) {
- pc._gather(transceiver.mid, sdpMLineIndex);
-
- if (iceTransport.state === 'new') {
- iceTransport.start(iceGatherer, remoteIceParameters, isIceLite ? 'controlling' : 'controlled');
- }
-
- if (dtlsTransport.state === 'new') {
- dtlsTransport.start(remoteDtlsParameters);
- }
- } // Calculate intersection of capabilities.
-
-
- var params = getCommonCapabilities(localCapabilities, remoteCapabilities); // Start the RTCRtpSender. The RTCRtpReceiver for this
- // transceiver has already been started in setRemoteDescription.
-
- pc._transceive(transceiver, params.codecs.length > 0, false);
- }
- });
- }
-
- pc._localDescription = {
- type: description.type,
- sdp: description.sdp
- };
-
- if (description.type === 'offer') {
- pc._updateSignalingState('have-local-offer');
- } else {
- pc._updateSignalingState('stable');
- }
-
- return Promise.resolve();
- };
-
- RTCPeerConnection.prototype.setRemoteDescription = function (description) {
- var pc = this; // Note: pranswer is not supported.
-
- if (['offer', 'answer'].indexOf(description.type) === -1) {
- return Promise.reject(makeError('TypeError', 'Unsupported type "' + description.type + '"'));
- }
-
- if (!isActionAllowedInSignalingState('setRemoteDescription', description.type, pc.signalingState) || pc._isClosed) {
- return Promise.reject(makeError('InvalidStateError', 'Can not set remote ' + description.type + ' in state ' + pc.signalingState));
- }
-
- var streams = {};
- pc.remoteStreams.forEach(function (stream) {
- streams[stream.id] = stream;
- });
- var receiverList = [];
- var sections = SDPUtils.splitSections(description.sdp);
- var sessionpart = sections.shift();
- var isIceLite = SDPUtils.matchPrefix(sessionpart, 'a=ice-lite').length > 0;
- var usingBundle = SDPUtils.matchPrefix(sessionpart, 'a=group:BUNDLE ').length > 0;
- pc.usingBundle = usingBundle;
- var iceOptions = SDPUtils.matchPrefix(sessionpart, 'a=ice-options:')[0];
-
- if (iceOptions) {
- pc.canTrickleIceCandidates = iceOptions.substr(14).split(' ').indexOf('trickle') >= 0;
- } else {
- pc.canTrickleIceCandidates = false;
- }
-
- sections.forEach(function (mediaSection, sdpMLineIndex) {
- var lines = SDPUtils.splitLines(mediaSection);
- var kind = SDPUtils.getKind(mediaSection); // treat bundle-only as not-rejected.
-
- var rejected = SDPUtils.isRejected(mediaSection) && SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0;
- var protocol = lines[0].substr(2).split(' ')[2];
- var direction = SDPUtils.getDirection(mediaSection, sessionpart);
- var remoteMsid = SDPUtils.parseMsid(mediaSection);
- var mid = SDPUtils.getMid(mediaSection) || SDPUtils.generateIdentifier(); // Reject datachannels which are not implemented yet.
-
- if (rejected || kind === 'application' && (protocol === 'DTLS/SCTP' || protocol === 'UDP/DTLS/SCTP')) {
- // TODO: this is dangerous in the case where a non-rejected m-line
- // becomes rejected.
- pc.transceivers[sdpMLineIndex] = {
- mid: mid,
- kind: kind,
- protocol: protocol,
- rejected: true
- };
- return;
- }
-
- if (!rejected && pc.transceivers[sdpMLineIndex] && pc.transceivers[sdpMLineIndex].rejected) {
- // recycle a rejected transceiver.
- pc.transceivers[sdpMLineIndex] = pc._createTransceiver(kind, true);
- }
-
- var transceiver;
- var iceGatherer;
- var iceTransport;
- var dtlsTransport;
- var rtpReceiver;
- var sendEncodingParameters;
- var recvEncodingParameters;
- var localCapabilities;
- var track; // FIXME: ensure the mediaSection has rtcp-mux set.
-
- var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);
- var remoteIceParameters;
- var remoteDtlsParameters;
-
- if (!rejected) {
- remoteIceParameters = SDPUtils.getIceParameters(mediaSection, sessionpart);
- remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection, sessionpart);
- remoteDtlsParameters.role = 'client';
- }
-
- recvEncodingParameters = SDPUtils.parseRtpEncodingParameters(mediaSection);
- var rtcpParameters = SDPUtils.parseRtcpParameters(mediaSection);
- var isComplete = SDPUtils.matchPrefix(mediaSection, 'a=end-of-candidates', sessionpart).length > 0;
- var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:').map(function (cand) {
- return SDPUtils.parseCandidate(cand);
- }).filter(function (cand) {
- return cand.component === 1;
- }); // Check if we can use BUNDLE and dispose transports.
-
- if ((description.type === 'offer' || description.type === 'answer') && !rejected && usingBundle && sdpMLineIndex > 0 && pc.transceivers[sdpMLineIndex]) {
- pc._disposeIceAndDtlsTransports(sdpMLineIndex);
-
- pc.transceivers[sdpMLineIndex].iceGatherer = pc.transceivers[0].iceGatherer;
- pc.transceivers[sdpMLineIndex].iceTransport = pc.transceivers[0].iceTransport;
- pc.transceivers[sdpMLineIndex].dtlsTransport = pc.transceivers[0].dtlsTransport;
-
- if (pc.transceivers[sdpMLineIndex].rtpSender) {
- pc.transceivers[sdpMLineIndex].rtpSender.setTransport(pc.transceivers[0].dtlsTransport);
- }
-
- if (pc.transceivers[sdpMLineIndex].rtpReceiver) {
- pc.transceivers[sdpMLineIndex].rtpReceiver.setTransport(pc.transceivers[0].dtlsTransport);
- }
- }
-
- if (description.type === 'offer' && !rejected) {
- transceiver = pc.transceivers[sdpMLineIndex] || pc._createTransceiver(kind);
- transceiver.mid = mid;
-
- if (!transceiver.iceGatherer) {
- transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex, usingBundle);
- }
-
- if (cands.length && transceiver.iceTransport.state === 'new') {
- if (isComplete && (!usingBundle || sdpMLineIndex === 0)) {
- transceiver.iceTransport.setRemoteCandidates(cands);
- } else {
- cands.forEach(function (candidate) {
- maybeAddCandidate(transceiver.iceTransport, candidate);
- });
- }
- }
-
- localCapabilities = window.RTCRtpReceiver.getCapabilities(kind); // filter RTX until additional stuff needed for RTX is implemented
- // in adapter.js
-
- if (edgeVersion < 15019) {
- localCapabilities.codecs = localCapabilities.codecs.filter(function (codec) {
- return codec.name !== 'rtx';
- });
- }
-
- sendEncodingParameters = transceiver.sendEncodingParameters || [{
- ssrc: (2 * sdpMLineIndex + 2) * 1001
- }]; // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams
-
- var isNewTrack = false;
-
- if (direction === 'sendrecv' || direction === 'sendonly') {
- isNewTrack = !transceiver.rtpReceiver;
- rtpReceiver = transceiver.rtpReceiver || new window.RTCRtpReceiver(transceiver.dtlsTransport, kind);
-
- if (isNewTrack) {
- var stream;
- track = rtpReceiver.track; // FIXME: does not work with Plan B.
-
- if (remoteMsid && remoteMsid.stream === '-') {// no-op. a stream id of '-' means: no associated stream.
- } else if (remoteMsid) {
- if (!streams[remoteMsid.stream]) {
- streams[remoteMsid.stream] = new window.MediaStream();
- Object.defineProperty(streams[remoteMsid.stream], 'id', {
- get: function () {
- return remoteMsid.stream;
- }
- });
- }
-
- Object.defineProperty(track, 'id', {
- get: function () {
- return remoteMsid.track;
- }
- });
- stream = streams[remoteMsid.stream];
- } else {
- if (!streams.default) {
- streams.default = new window.MediaStream();
- }
-
- stream = streams.default;
- }
-
- if (stream) {
- addTrackToStreamAndFireEvent(track, stream);
- transceiver.associatedRemoteMediaStreams.push(stream);
- }
-
- receiverList.push([track, rtpReceiver, stream]);
- }
- } else if (transceiver.rtpReceiver && transceiver.rtpReceiver.track) {
- transceiver.associatedRemoteMediaStreams.forEach(function (s) {
- var nativeTrack = s.getTracks().find(function (t) {
- return t.id === transceiver.rtpReceiver.track.id;
- });
-
- if (nativeTrack) {
- removeTrackFromStreamAndFireEvent(nativeTrack, s);
- }
- });
- transceiver.associatedRemoteMediaStreams = [];
- }
-
- transceiver.localCapabilities = localCapabilities;
- transceiver.remoteCapabilities = remoteCapabilities;
- transceiver.rtpReceiver = rtpReceiver;
- transceiver.rtcpParameters = rtcpParameters;
- transceiver.sendEncodingParameters = sendEncodingParameters;
- transceiver.recvEncodingParameters = recvEncodingParameters; // Start the RTCRtpReceiver now. The RTPSender is started in
- // setLocalDescription.
-
- pc._transceive(pc.transceivers[sdpMLineIndex], false, isNewTrack);
- } else if (description.type === 'answer' && !rejected) {
- transceiver = pc.transceivers[sdpMLineIndex];
- iceGatherer = transceiver.iceGatherer;
- iceTransport = transceiver.iceTransport;
- dtlsTransport = transceiver.dtlsTransport;
- rtpReceiver = transceiver.rtpReceiver;
- sendEncodingParameters = transceiver.sendEncodingParameters;
- localCapabilities = transceiver.localCapabilities;
- pc.transceivers[sdpMLineIndex].recvEncodingParameters = recvEncodingParameters;
- pc.transceivers[sdpMLineIndex].remoteCapabilities = remoteCapabilities;
- pc.transceivers[sdpMLineIndex].rtcpParameters = rtcpParameters;
-
- if (cands.length && iceTransport.state === 'new') {
- if ((isIceLite || isComplete) && (!usingBundle || sdpMLineIndex === 0)) {
- iceTransport.setRemoteCandidates(cands);
- } else {
- cands.forEach(function (candidate) {
- maybeAddCandidate(transceiver.iceTransport, candidate);
- });
- }
- }
-
- if (!usingBundle || sdpMLineIndex === 0) {
- if (iceTransport.state === 'new') {
- iceTransport.start(iceGatherer, remoteIceParameters, 'controlling');
- }
-
- if (dtlsTransport.state === 'new') {
- dtlsTransport.start(remoteDtlsParameters);
- }
- } // If the offer contained RTX but the answer did not,
- // remove RTX from sendEncodingParameters.
-
-
- var commonCapabilities = getCommonCapabilities(transceiver.localCapabilities, transceiver.remoteCapabilities);
- var hasRtx = commonCapabilities.codecs.filter(function (c) {
- return c.name.toLowerCase() === 'rtx';
- }).length;
-
- if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) {
- delete transceiver.sendEncodingParameters[0].rtx;
- }
-
- pc._transceive(transceiver, direction === 'sendrecv' || direction === 'recvonly', direction === 'sendrecv' || direction === 'sendonly'); // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams
-
-
- if (rtpReceiver && (direction === 'sendrecv' || direction === 'sendonly')) {
- track = rtpReceiver.track;
-
- if (remoteMsid) {
- if (!streams[remoteMsid.stream]) {
- streams[remoteMsid.stream] = new window.MediaStream();
- }
-
- addTrackToStreamAndFireEvent(track, streams[remoteMsid.stream]);
- receiverList.push([track, rtpReceiver, streams[remoteMsid.stream]]);
- } else {
- if (!streams.default) {
- streams.default = new window.MediaStream();
- }
-
- addTrackToStreamAndFireEvent(track, streams.default);
- receiverList.push([track, rtpReceiver, streams.default]);
- }
- } else {
- // FIXME: actually the receiver should be created later.
- delete transceiver.rtpReceiver;
- }
- }
- });
-
- if (pc._dtlsRole === undefined) {
- pc._dtlsRole = description.type === 'offer' ? 'active' : 'passive';
- }
-
- pc._remoteDescription = {
- type: description.type,
- sdp: description.sdp
- };
-
- if (description.type === 'offer') {
- pc._updateSignalingState('have-remote-offer');
- } else {
- pc._updateSignalingState('stable');
- }
-
- Object.keys(streams).forEach(function (sid) {
- var stream = streams[sid];
-
- if (stream.getTracks().length) {
- if (pc.remoteStreams.indexOf(stream) === -1) {
- pc.remoteStreams.push(stream);
- var event = new Event('addstream');
- event.stream = stream;
- window.setTimeout(function () {
- pc._dispatchEvent('addstream', event);
- });
- }
-
- receiverList.forEach(function (item) {
- var track = item[0];
- var receiver = item[1];
-
- if (stream.id !== item[2].id) {
- return;
- }
-
- fireAddTrack(pc, track, receiver, [stream]);
- });
- }
- });
- receiverList.forEach(function (item) {
- if (item[2]) {
- return;
- }
-
- fireAddTrack(pc, item[0], item[1], []);
- }); // check whether addIceCandidate({}) was called within four seconds after
- // setRemoteDescription.
-
- window.setTimeout(function () {
- if (!(pc && pc.transceivers)) {
- return;
- }
-
- pc.transceivers.forEach(function (transceiver) {
- if (transceiver.iceTransport && transceiver.iceTransport.state === 'new' && transceiver.iceTransport.getRemoteCandidates().length > 0) {
- console.warn('Timeout for addRemoteCandidate. Consider sending ' + 'an end-of-candidates notification');
- transceiver.iceTransport.addRemoteCandidate({});
- }
- });
- }, 4000);
- return Promise.resolve();
- };
-
- RTCPeerConnection.prototype.close = function () {
- this.transceivers.forEach(function (transceiver) {
- /* not yet
- if (transceiver.iceGatherer) {
- transceiver.iceGatherer.close();
- }
- */
- if (transceiver.iceTransport) {
- transceiver.iceTransport.stop();
- }
-
- if (transceiver.dtlsTransport) {
- transceiver.dtlsTransport.stop();
- }
-
- if (transceiver.rtpSender) {
- transceiver.rtpSender.stop();
- }
-
- if (transceiver.rtpReceiver) {
- transceiver.rtpReceiver.stop();
- }
- }); // FIXME: clean up tracks, local streams, remote streams, etc
-
- this._isClosed = true;
-
- this._updateSignalingState('closed');
- }; // Update the signaling state.
-
-
- RTCPeerConnection.prototype._updateSignalingState = function (newState) {
- this.signalingState = newState;
- var event = new Event('signalingstatechange');
-
- this._dispatchEvent('signalingstatechange', event);
- }; // Determine whether to fire the negotiationneeded event.
-
-
- RTCPeerConnection.prototype._maybeFireNegotiationNeeded = function () {
- var pc = this;
-
- if (this.signalingState !== 'stable' || this.needNegotiation === true) {
- return;
- }
-
- this.needNegotiation = true;
- window.setTimeout(function () {
- if (pc.needNegotiation) {
- pc.needNegotiation = false;
- var event = new Event('negotiationneeded');
-
- pc._dispatchEvent('negotiationneeded', event);
- }
- }, 0);
- }; // Update the ice connection state.
-
-
- RTCPeerConnection.prototype._updateIceConnectionState = function () {
- var newState;
- var states = {
- 'new': 0,
- closed: 0,
- checking: 0,
- connected: 0,
- completed: 0,
- disconnected: 0,
- failed: 0
- };
- this.transceivers.forEach(function (transceiver) {
- if (transceiver.iceTransport && !transceiver.rejected) {
- states[transceiver.iceTransport.state]++;
- }
- });
- newState = 'new';
-
- if (states.failed > 0) {
- newState = 'failed';
- } else if (states.checking > 0) {
- newState = 'checking';
- } else if (states.disconnected > 0) {
- newState = 'disconnected';
- } else if (states.new > 0) {
- newState = 'new';
- } else if (states.connected > 0) {
- newState = 'connected';
- } else if (states.completed > 0) {
- newState = 'completed';
- }
-
- if (newState !== this.iceConnectionState) {
- this.iceConnectionState = newState;
- var event = new Event('iceconnectionstatechange');
-
- this._dispatchEvent('iceconnectionstatechange', event);
- }
- }; // Update the connection state.
-
-
- RTCPeerConnection.prototype._updateConnectionState = function () {
- var newState;
- var states = {
- 'new': 0,
- closed: 0,
- connecting: 0,
- connected: 0,
- completed: 0,
- disconnected: 0,
- failed: 0
- };
- this.transceivers.forEach(function (transceiver) {
- if (transceiver.iceTransport && transceiver.dtlsTransport && !transceiver.rejected) {
- states[transceiver.iceTransport.state]++;
- states[transceiver.dtlsTransport.state]++;
- }
- }); // ICETransport.completed and connected are the same for this purpose.
-
- states.connected += states.completed;
- newState = 'new';
-
- if (states.failed > 0) {
- newState = 'failed';
- } else if (states.connecting > 0) {
- newState = 'connecting';
- } else if (states.disconnected > 0) {
- newState = 'disconnected';
- } else if (states.new > 0) {
- newState = 'new';
- } else if (states.connected > 0) {
- newState = 'connected';
- }
-
- if (newState !== this.connectionState) {
- this.connectionState = newState;
- var event = new Event('connectionstatechange');
-
- this._dispatchEvent('connectionstatechange', event);
- }
- };
-
- RTCPeerConnection.prototype.createOffer = function () {
- var pc = this;
-
- if (pc._isClosed) {
- return Promise.reject(makeError('InvalidStateError', 'Can not call createOffer after close'));
- }
-
- var numAudioTracks = pc.transceivers.filter(function (t) {
- return t.kind === 'audio';
- }).length;
- var numVideoTracks = pc.transceivers.filter(function (t) {
- return t.kind === 'video';
- }).length; // Determine number of audio and video tracks we need to send/recv.
-
- var offerOptions = arguments[0];
-
- if (offerOptions) {
- // Reject Chrome legacy constraints.
- if (offerOptions.mandatory || offerOptions.optional) {
- throw new TypeError('Legacy mandatory/optional constraints not supported.');
- }
-
- if (offerOptions.offerToReceiveAudio !== undefined) {
- if (offerOptions.offerToReceiveAudio === true) {
- numAudioTracks = 1;
- } else if (offerOptions.offerToReceiveAudio === false) {
- numAudioTracks = 0;
- } else {
- numAudioTracks = offerOptions.offerToReceiveAudio;
- }
- }
-
- if (offerOptions.offerToReceiveVideo !== undefined) {
- if (offerOptions.offerToReceiveVideo === true) {
- numVideoTracks = 1;
- } else if (offerOptions.offerToReceiveVideo === false) {
- numVideoTracks = 0;
- } else {
- numVideoTracks = offerOptions.offerToReceiveVideo;
- }
- }
- }
-
- pc.transceivers.forEach(function (transceiver) {
- if (transceiver.kind === 'audio') {
- numAudioTracks--;
-
- if (numAudioTracks < 0) {
- transceiver.wantReceive = false;
- }
- } else if (transceiver.kind === 'video') {
- numVideoTracks--;
-
- if (numVideoTracks < 0) {
- transceiver.wantReceive = false;
- }
- }
- }); // Create M-lines for recvonly streams.
-
- while (numAudioTracks > 0 || numVideoTracks > 0) {
- if (numAudioTracks > 0) {
- pc._createTransceiver('audio');
-
- numAudioTracks--;
- }
-
- if (numVideoTracks > 0) {
- pc._createTransceiver('video');
-
- numVideoTracks--;
- }
- }
-
- var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId, pc._sdpSessionVersion++);
- pc.transceivers.forEach(function (transceiver, sdpMLineIndex) {
- // For each track, create an ice gatherer, ice transport,
- // dtls transport, potentially rtpsender and rtpreceiver.
- var track = transceiver.track;
- var kind = transceiver.kind;
- var mid = transceiver.mid || SDPUtils.generateIdentifier();
- transceiver.mid = mid;
-
- if (!transceiver.iceGatherer) {
- transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex, pc.usingBundle);
- }
-
- var localCapabilities = window.RTCRtpSender.getCapabilities(kind); // filter RTX until additional stuff needed for RTX is implemented
- // in adapter.js
-
- if (edgeVersion < 15019) {
- localCapabilities.codecs = localCapabilities.codecs.filter(function (codec) {
- return codec.name !== 'rtx';
- });
- }
-
- localCapabilities.codecs.forEach(function (codec) {
- // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552
- // by adding level-asymmetry-allowed=1
- if (codec.name === 'H264' && codec.parameters['level-asymmetry-allowed'] === undefined) {
- codec.parameters['level-asymmetry-allowed'] = '1';
- } // for subsequent offers, we might have to re-use the payload
- // type of the last offer.
-
-
- if (transceiver.remoteCapabilities && transceiver.remoteCapabilities.codecs) {
- transceiver.remoteCapabilities.codecs.forEach(function (remoteCodec) {
- if (codec.name.toLowerCase() === remoteCodec.name.toLowerCase() && codec.clockRate === remoteCodec.clockRate) {
- codec.preferredPayloadType = remoteCodec.payloadType;
- }
- });
- }
- });
- localCapabilities.headerExtensions.forEach(function (hdrExt) {
- var remoteExtensions = transceiver.remoteCapabilities && transceiver.remoteCapabilities.headerExtensions || [];
- remoteExtensions.forEach(function (rHdrExt) {
- if (hdrExt.uri === rHdrExt.uri) {
- hdrExt.id = rHdrExt.id;
- }
- });
- }); // generate an ssrc now, to be used later in rtpSender.send
-
- var sendEncodingParameters = transceiver.sendEncodingParameters || [{
- ssrc: (2 * sdpMLineIndex + 1) * 1001
- }];
-
- if (track) {
- // add RTX
- if (edgeVersion >= 15019 && kind === 'video' && !sendEncodingParameters[0].rtx) {
- sendEncodingParameters[0].rtx = {
- ssrc: sendEncodingParameters[0].ssrc + 1
- };
- }
- }
-
- if (transceiver.wantReceive) {
- transceiver.rtpReceiver = new window.RTCRtpReceiver(transceiver.dtlsTransport, kind);
- }
-
- transceiver.localCapabilities = localCapabilities;
- transceiver.sendEncodingParameters = sendEncodingParameters;
- }); // always offer BUNDLE and dispose on return if not supported.
-
- if (pc._config.bundlePolicy !== 'max-compat') {
- sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function (t) {
- return t.mid;
- }).join(' ') + '\r\n';
- }
-
- sdp += 'a=ice-options:trickle\r\n';
- pc.transceivers.forEach(function (transceiver, sdpMLineIndex) {
- sdp += writeMediaSection(transceiver, transceiver.localCapabilities, 'offer', transceiver.stream, pc._dtlsRole);
- sdp += 'a=rtcp-rsize\r\n';
-
- if (transceiver.iceGatherer && pc.iceGatheringState !== 'new' && (sdpMLineIndex === 0 || !pc.usingBundle)) {
- transceiver.iceGatherer.getLocalCandidates().forEach(function (cand) {
- cand.component = 1;
- sdp += 'a=' + SDPUtils.writeCandidate(cand) + '\r\n';
- });
-
- if (transceiver.iceGatherer.state === 'completed') {
- sdp += 'a=end-of-candidates\r\n';
- }
- }
- });
- var desc = new window.RTCSessionDescription({
- type: 'offer',
- sdp: sdp
- });
- return Promise.resolve(desc);
- };
-
- RTCPeerConnection.prototype.createAnswer = function () {
- var pc = this;
-
- if (pc._isClosed) {
- return Promise.reject(makeError('InvalidStateError', 'Can not call createAnswer after close'));
- }
-
- if (!(pc.signalingState === 'have-remote-offer' || pc.signalingState === 'have-local-pranswer')) {
- return Promise.reject(makeError('InvalidStateError', 'Can not call createAnswer in signalingState ' + pc.signalingState));
- }
-
- var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId, pc._sdpSessionVersion++);
-
- if (pc.usingBundle) {
- sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function (t) {
- return t.mid;
- }).join(' ') + '\r\n';
- }
-
- sdp += 'a=ice-options:trickle\r\n';
- var mediaSectionsInOffer = SDPUtils.getMediaSections(pc._remoteDescription.sdp).length;
- pc.transceivers.forEach(function (transceiver, sdpMLineIndex) {
- if (sdpMLineIndex + 1 > mediaSectionsInOffer) {
- return;
- }
-
- if (transceiver.rejected) {
- if (transceiver.kind === 'application') {
- if (transceiver.protocol === 'DTLS/SCTP') {
- // legacy fmt
- sdp += 'm=application 0 DTLS/SCTP 5000\r\n';
- } else {
- sdp += 'm=application 0 ' + transceiver.protocol + ' webrtc-datachannel\r\n';
- }
- } else if (transceiver.kind === 'audio') {
- sdp += 'm=audio 0 UDP/TLS/RTP/SAVPF 0\r\n' + 'a=rtpmap:0 PCMU/8000\r\n';
- } else if (transceiver.kind === 'video') {
- sdp += 'm=video 0 UDP/TLS/RTP/SAVPF 120\r\n' + 'a=rtpmap:120 VP8/90000\r\n';
- }
-
- sdp += 'c=IN IP4 0.0.0.0\r\n' + 'a=inactive\r\n' + 'a=mid:' + transceiver.mid + '\r\n';
- return;
- } // FIXME: look at direction.
-
-
- if (transceiver.stream) {
- var localTrack;
-
- if (transceiver.kind === 'audio') {
- localTrack = transceiver.stream.getAudioTracks()[0];
- } else if (transceiver.kind === 'video') {
- localTrack = transceiver.stream.getVideoTracks()[0];
- }
-
- if (localTrack) {
- // add RTX
- if (edgeVersion >= 15019 && transceiver.kind === 'video' && !transceiver.sendEncodingParameters[0].rtx) {
- transceiver.sendEncodingParameters[0].rtx = {
- ssrc: transceiver.sendEncodingParameters[0].ssrc + 1
- };
- }
- }
- } // Calculate intersection of capabilities.
-
-
- var commonCapabilities = getCommonCapabilities(transceiver.localCapabilities, transceiver.remoteCapabilities);
- var hasRtx = commonCapabilities.codecs.filter(function (c) {
- return c.name.toLowerCase() === 'rtx';
- }).length;
-
- if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) {
- delete transceiver.sendEncodingParameters[0].rtx;
- }
-
- sdp += writeMediaSection(transceiver, commonCapabilities, 'answer', transceiver.stream, pc._dtlsRole);
-
- if (transceiver.rtcpParameters && transceiver.rtcpParameters.reducedSize) {
- sdp += 'a=rtcp-rsize\r\n';
- }
- });
- var desc = new window.RTCSessionDescription({
- type: 'answer',
- sdp: sdp
- });
- return Promise.resolve(desc);
- };
-
- RTCPeerConnection.prototype.addIceCandidate = function (candidate) {
- var pc = this;
- var sections;
-
- if (candidate && !(candidate.sdpMLineIndex !== undefined || candidate.sdpMid)) {
- return Promise.reject(new TypeError('sdpMLineIndex or sdpMid required'));
- } // TODO: needs to go into ops queue.
-
-
- return new Promise(function (resolve, reject) {
- if (!pc._remoteDescription) {
- return reject(makeError('InvalidStateError', 'Can not add ICE candidate without a remote description'));
- } else if (!candidate || candidate.candidate === '') {
- for (var j = 0; j < pc.transceivers.length; j++) {
- if (pc.transceivers[j].rejected) {
- continue;
- }
-
- pc.transceivers[j].iceTransport.addRemoteCandidate({});
- sections = SDPUtils.getMediaSections(pc._remoteDescription.sdp);
- sections[j] += 'a=end-of-candidates\r\n';
- pc._remoteDescription.sdp = SDPUtils.getDescription(pc._remoteDescription.sdp) + sections.join('');
-
- if (pc.usingBundle) {
- break;
- }
- }
- } else {
- var sdpMLineIndex = candidate.sdpMLineIndex;
-
- if (candidate.sdpMid) {
- for (var i = 0; i < pc.transceivers.length; i++) {
- if (pc.transceivers[i].mid === candidate.sdpMid) {
- sdpMLineIndex = i;
- break;
- }
- }
- }
-
- var transceiver = pc.transceivers[sdpMLineIndex];
-
- if (transceiver) {
- if (transceiver.rejected) {
- return resolve();
- }
-
- var cand = Object.keys(candidate.candidate).length > 0 ? SDPUtils.parseCandidate(candidate.candidate) : {}; // Ignore Chrome's invalid candidates since Edge does not like them.
-
- if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) {
- return resolve();
- } // Ignore RTCP candidates, we assume RTCP-MUX.
-
-
- if (cand.component && cand.component !== 1) {
- return resolve();
- } // when using bundle, avoid adding candidates to the wrong
- // ice transport. And avoid adding candidates added in the SDP.
-
-
- if (sdpMLineIndex === 0 || sdpMLineIndex > 0 && transceiver.iceTransport !== pc.transceivers[0].iceTransport) {
- if (!maybeAddCandidate(transceiver.iceTransport, cand)) {
- return reject(makeError('OperationError', 'Can not add ICE candidate'));
- }
- } // update the remoteDescription.
-
-
- var candidateString = candidate.candidate.trim();
-
- if (candidateString.indexOf('a=') === 0) {
- candidateString = candidateString.substr(2);
- }
-
- sections = SDPUtils.getMediaSections(pc._remoteDescription.sdp);
- sections[sdpMLineIndex] += 'a=' + (cand.type ? candidateString : 'end-of-candidates') + '\r\n';
- pc._remoteDescription.sdp = SDPUtils.getDescription(pc._remoteDescription.sdp) + sections.join('');
- } else {
- return reject(makeError('OperationError', 'Can not add ICE candidate'));
- }
- }
-
- resolve();
- });
- };
-
- RTCPeerConnection.prototype.getStats = function (selector) {
- if (selector && selector instanceof window.MediaStreamTrack) {
- var senderOrReceiver = null;
- this.transceivers.forEach(function (transceiver) {
- if (transceiver.rtpSender && transceiver.rtpSender.track === selector) {
- senderOrReceiver = transceiver.rtpSender;
- } else if (transceiver.rtpReceiver && transceiver.rtpReceiver.track === selector) {
- senderOrReceiver = transceiver.rtpReceiver;
- }
- });
-
- if (!senderOrReceiver) {
- throw makeError('InvalidAccessError', 'Invalid selector.');
- }
-
- return senderOrReceiver.getStats();
- }
-
- var promises = [];
- this.transceivers.forEach(function (transceiver) {
- ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport', 'dtlsTransport'].forEach(function (method) {
- if (transceiver[method]) {
- promises.push(transceiver[method].getStats());
- }
- });
- });
- return Promise.all(promises).then(function (allStats) {
- var results = new Map();
- allStats.forEach(function (stats) {
- stats.forEach(function (stat) {
- results.set(stat.id, stat);
- });
- });
- return results;
- });
- }; // fix low-level stat names and return Map instead of object.
-
-
- var ortcObjects = ['RTCRtpSender', 'RTCRtpReceiver', 'RTCIceGatherer', 'RTCIceTransport', 'RTCDtlsTransport'];
- ortcObjects.forEach(function (ortcObjectName) {
- var obj = window[ortcObjectName];
-
- if (obj && obj.prototype && obj.prototype.getStats) {
- var nativeGetstats = obj.prototype.getStats;
-
- obj.prototype.getStats = function () {
- return nativeGetstats.apply(this).then(function (nativeStats) {
- var mapStats = new Map();
- Object.keys(nativeStats).forEach(function (id) {
- nativeStats[id].type = fixStatsType(nativeStats[id]);
- mapStats.set(id, nativeStats[id]);
- });
- return mapStats;
- });
- };
- }
- }); // legacy callback shims. Should be moved to adapter.js some days.
-
- var methods = ['createOffer', 'createAnswer'];
- methods.forEach(function (method) {
- var nativeMethod = RTCPeerConnection.prototype[method];
-
- RTCPeerConnection.prototype[method] = function () {
- var args = arguments;
-
- if (typeof args[0] === 'function' || typeof args[1] === 'function') {
- // legacy
- return nativeMethod.apply(this, [arguments[2]]).then(function (description) {
- if (typeof args[0] === 'function') {
- args[0].apply(null, [description]);
- }
- }, function (error) {
- if (typeof args[1] === 'function') {
- args[1].apply(null, [error]);
- }
- });
- }
-
- return nativeMethod.apply(this, arguments);
- };
- });
- methods = ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'];
- methods.forEach(function (method) {
- var nativeMethod = RTCPeerConnection.prototype[method];
-
- RTCPeerConnection.prototype[method] = function () {
- var args = arguments;
-
- if (typeof args[1] === 'function' || typeof args[2] === 'function') {
- // legacy
- return nativeMethod.apply(this, arguments).then(function () {
- if (typeof args[1] === 'function') {
- args[1].apply(null);
- }
- }, function (error) {
- if (typeof args[2] === 'function') {
- args[2].apply(null, [error]);
- }
- });
- }
-
- return nativeMethod.apply(this, arguments);
- };
- }); // getStats is special. It doesn't have a spec legacy method yet we support
- // getStats(something, cb) without error callbacks.
-
- ['getStats'].forEach(function (method) {
- var nativeMethod = RTCPeerConnection.prototype[method];
-
- RTCPeerConnection.prototype[method] = function () {
- var args = arguments;
-
- if (typeof args[1] === 'function') {
- return nativeMethod.apply(this, arguments).then(function () {
- if (typeof args[1] === 'function') {
- args[1].apply(null);
- }
- });
- }
-
- return nativeMethod.apply(this, arguments);
- };
- });
- return RTCPeerConnection;
-};
-},{"sdp":"YHvh"}],"YdKx":[function(require,module,exports) {
-/*
- * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.shimGetUserMedia = shimGetUserMedia;
-
-function shimGetUserMedia(window) {
- var navigator = window && window.navigator;
-
- var shimError_ = function (e) {
- return {
- name: {
- PermissionDeniedError: 'NotAllowedError'
- }[e.name] || e.name,
- message: e.message,
- constraint: e.constraint,
- toString: function () {
- return this.name;
- }
- };
- }; // getUserMedia error shim.
-
-
- var origGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);
-
- navigator.mediaDevices.getUserMedia = function (c) {
- return origGetUserMedia(c).catch(function (e) {
- return Promise.reject(shimError_(e));
- });
- };
-}
-},{}],"P3bV":[function(require,module,exports) {
-/*
- * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.shimGetDisplayMedia = shimGetDisplayMedia;
-
-function shimGetDisplayMedia(window) {
- if (!('getDisplayMedia' in window.navigator)) {
- return;
- }
-
- if (!window.navigator.mediaDevices) {
- return;
- }
-
- if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) {
- return;
- }
-
- window.navigator.mediaDevices.getDisplayMedia = window.navigator.getDisplayMedia.bind(window.navigator);
-}
-},{}],"XRic":[function(require,module,exports) {
-/*
- * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.shimPeerConnection = shimPeerConnection;
-exports.shimReplaceTrack = shimReplaceTrack;
-Object.defineProperty(exports, "shimGetUserMedia", {
- enumerable: true,
- get: function () {
- return _getusermedia.shimGetUserMedia;
- }
-});
-Object.defineProperty(exports, "shimGetDisplayMedia", {
- enumerable: true,
- get: function () {
- return _getdisplaymedia.shimGetDisplayMedia;
- }
-});
-
-var utils = _interopRequireWildcard(require("../utils"));
-
-var _filtericeservers = require("./filtericeservers");
-
-var _rtcpeerconnectionShim = _interopRequireDefault(require("rtcpeerconnection-shim"));
-
-var _getusermedia = require("./getusermedia");
-
-var _getdisplaymedia = require("./getdisplaymedia");
-
-function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
-
-function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
-
-function shimPeerConnection(window, browserDetails) {
- if (window.RTCIceGatherer) {
- if (!window.RTCIceCandidate) {
- window.RTCIceCandidate = function RTCIceCandidate(args) {
- return args;
- };
- }
-
- if (!window.RTCSessionDescription) {
- window.RTCSessionDescription = function RTCSessionDescription(args) {
- return args;
- };
- } // this adds an additional event listener to MediaStrackTrack that signals
- // when a tracks enabled property was changed. Workaround for a bug in
- // addStream, see below. No longer required in 15025+
-
-
- if (browserDetails.version < 15025) {
- var origMSTEnabled = Object.getOwnPropertyDescriptor(window.MediaStreamTrack.prototype, 'enabled');
- Object.defineProperty(window.MediaStreamTrack.prototype, 'enabled', {
- set: function (value) {
- origMSTEnabled.set.call(this, value);
- var ev = new Event('enabled');
- ev.enabled = value;
- this.dispatchEvent(ev);
- }
- });
- }
- } // ORTC defines the DTMF sender a bit different.
- // https://github.com/w3c/ortc/issues/714
-
-
- if (window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) {
- Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', {
- get: function () {
- if (this._dtmf === undefined) {
- if (this.track.kind === 'audio') {
- this._dtmf = new window.RTCDtmfSender(this);
- } else if (this.track.kind === 'video') {
- this._dtmf = null;
- }
- }
-
- return this._dtmf;
- }
- });
- } // Edge currently only implements the RTCDtmfSender, not the
- // RTCDTMFSender alias. See http://draft.ortc.org/#rtcdtmfsender2*
-
-
- if (window.RTCDtmfSender && !window.RTCDTMFSender) {
- window.RTCDTMFSender = window.RTCDtmfSender;
- }
-
- var RTCPeerConnectionShim = (0, _rtcpeerconnectionShim.default)(window, browserDetails.version);
-
- window.RTCPeerConnection = function RTCPeerConnection(config) {
- if (config && config.iceServers) {
- config.iceServers = (0, _filtericeservers.filterIceServers)(config.iceServers, browserDetails.version);
- utils.log('ICE servers after filtering:', config.iceServers);
- }
-
- return new RTCPeerConnectionShim(config);
- };
-
- window.RTCPeerConnection.prototype = RTCPeerConnectionShim.prototype;
-}
-
-function shimReplaceTrack(window) {
- // ORTC has replaceTrack -- https://github.com/w3c/ortc/issues/614
- if (window.RTCRtpSender && !('replaceTrack' in window.RTCRtpSender.prototype)) {
- window.RTCRtpSender.prototype.replaceTrack = window.RTCRtpSender.prototype.setTrack;
- }
-}
-},{"../utils":"iSxC","./filtericeservers":"NZ1C","rtcpeerconnection-shim":"NJ2u","./getusermedia":"YdKx","./getdisplaymedia":"P3bV"}],"GzSv":[function(require,module,exports) {
-/*
- * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.shimGetUserMedia = shimGetUserMedia;
-
-var utils = _interopRequireWildcard(require("../utils"));
-
-function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
-
-function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function (obj) { return typeof obj; }; } else { _typeof = function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
-
-function shimGetUserMedia(window, browserDetails) {
- var navigator = window && window.navigator;
- var MediaStreamTrack = window && window.MediaStreamTrack;
-
- navigator.getUserMedia = function (constraints, onSuccess, onError) {
- // Replace Firefox 44+'s deprecation warning with unprefixed version.
- utils.deprecated('navigator.getUserMedia', 'navigator.mediaDevices.getUserMedia');
- navigator.mediaDevices.getUserMedia(constraints).then(onSuccess, onError);
- };
-
- if (!(browserDetails.version > 55 && 'autoGainControl' in navigator.mediaDevices.getSupportedConstraints())) {
- var remap = function (obj, a, b) {
- if (a in obj && !(b in obj)) {
- obj[b] = obj[a];
- delete obj[a];
- }
- };
-
- var nativeGetUserMedia = navigator.mediaDevices.getUserMedia.bind(navigator.mediaDevices);
-
- navigator.mediaDevices.getUserMedia = function (c) {
- if (_typeof(c) === 'object' && _typeof(c.audio) === 'object') {
- c = JSON.parse(JSON.stringify(c));
- remap(c.audio, 'autoGainControl', 'mozAutoGainControl');
- remap(c.audio, 'noiseSuppression', 'mozNoiseSuppression');
- }
-
- return nativeGetUserMedia(c);
- };
-
- if (MediaStreamTrack && MediaStreamTrack.prototype.getSettings) {
- var nativeGetSettings = MediaStreamTrack.prototype.getSettings;
-
- MediaStreamTrack.prototype.getSettings = function () {
- var obj = nativeGetSettings.apply(this, arguments);
- remap(obj, 'mozAutoGainControl', 'autoGainControl');
- remap(obj, 'mozNoiseSuppression', 'noiseSuppression');
- return obj;
- };
- }
-
- if (MediaStreamTrack && MediaStreamTrack.prototype.applyConstraints) {
- var nativeApplyConstraints = MediaStreamTrack.prototype.applyConstraints;
-
- MediaStreamTrack.prototype.applyConstraints = function (c) {
- if (this.kind === 'audio' && _typeof(c) === 'object') {
- c = JSON.parse(JSON.stringify(c));
- remap(c, 'autoGainControl', 'mozAutoGainControl');
- remap(c, 'noiseSuppression', 'mozNoiseSuppression');
- }
-
- return nativeApplyConstraints.apply(this, [c]);
- };
- }
- }
-}
-},{"../utils":"iSxC"}],"UuGU":[function(require,module,exports) {
-/*
- * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.shimGetDisplayMedia = shimGetDisplayMedia;
-
-function shimGetDisplayMedia(window, preferredMediaSource) {
- if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) {
- return;
- }
-
- if (!window.navigator.mediaDevices) {
- return;
- }
-
- window.navigator.mediaDevices.getDisplayMedia = function getDisplayMedia(constraints) {
- if (!(constraints && constraints.video)) {
- var err = new DOMException('getDisplayMedia without video ' + 'constraints is undefined');
- err.name = 'NotFoundError'; // from https://heycam.github.io/webidl/#idl-DOMException-error-names
-
- err.code = 8;
- return Promise.reject(err);
- }
-
- if (constraints.video === true) {
- constraints.video = {
- mediaSource: preferredMediaSource
- };
- } else {
- constraints.video.mediaSource = preferredMediaSource;
- }
-
- return window.navigator.mediaDevices.getUserMedia(constraints);
- };
-}
-},{}],"Fzdr":[function(require,module,exports) {
-/*
- * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.shimOnTrack = shimOnTrack;
-exports.shimPeerConnection = shimPeerConnection;
-exports.shimSenderGetStats = shimSenderGetStats;
-exports.shimReceiverGetStats = shimReceiverGetStats;
-exports.shimRemoveStream = shimRemoveStream;
-exports.shimRTCDataChannel = shimRTCDataChannel;
-exports.shimAddTransceiver = shimAddTransceiver;
-exports.shimGetParameters = shimGetParameters;
-exports.shimCreateOffer = shimCreateOffer;
-exports.shimCreateAnswer = shimCreateAnswer;
-Object.defineProperty(exports, "shimGetUserMedia", {
- enumerable: true,
- get: function () {
- return _getusermedia.shimGetUserMedia;
- }
-});
-Object.defineProperty(exports, "shimGetDisplayMedia", {
- enumerable: true,
- get: function () {
- return _getdisplaymedia.shimGetDisplayMedia;
- }
-});
-
-var utils = _interopRequireWildcard(require("../utils"));
-
-var _getusermedia = require("./getusermedia");
-
-var _getdisplaymedia = require("./getdisplaymedia");
-
-function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
-
-function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }
-
-function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function (obj) { return typeof obj; }; } else { _typeof = function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
-
-function shimOnTrack(window) {
- if (_typeof(window) === 'object' && window.RTCTrackEvent && 'receiver' in window.RTCTrackEvent.prototype && !('transceiver' in window.RTCTrackEvent.prototype)) {
- Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', {
- get: function () {
- return {
- receiver: this.receiver
- };
- }
- });
- }
-}
-
-function shimPeerConnection(window, browserDetails) {
- if (_typeof(window) !== 'object' || !(window.RTCPeerConnection || window.mozRTCPeerConnection)) {
- return; // probably media.peerconnection.enabled=false in about:config
- }
-
- if (!window.RTCPeerConnection && window.mozRTCPeerConnection) {
- // very basic support for old versions.
- window.RTCPeerConnection = window.mozRTCPeerConnection;
- }
-
- if (browserDetails.version < 53) {
- // shim away need for obsolete RTCIceCandidate/RTCSessionDescription.
- ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'].forEach(function (method) {
- var nativeMethod = window.RTCPeerConnection.prototype[method];
-
- var methodObj = _defineProperty({}, method, function () {
- arguments[0] = new (method === 'addIceCandidate' ? window.RTCIceCandidate : window.RTCSessionDescription)(arguments[0]);
- return nativeMethod.apply(this, arguments);
- });
-
- window.RTCPeerConnection.prototype[method] = methodObj[method];
- });
- }
-
- var modernStatsTypes = {
- inboundrtp: 'inbound-rtp',
- outboundrtp: 'outbound-rtp',
- candidatepair: 'candidate-pair',
- localcandidate: 'local-candidate',
- remotecandidate: 'remote-candidate'
- };
- var nativeGetStats = window.RTCPeerConnection.prototype.getStats;
-
- window.RTCPeerConnection.prototype.getStats = function getStats() {
- var [selector, onSucc, onErr] = arguments;
- return nativeGetStats.apply(this, [selector || null]).then(function (stats) {
- if (browserDetails.version < 53 && !onSucc) {
- // Shim only promise getStats with spec-hyphens in type names
- // Leave callback version alone; misc old uses of forEach before Map
- try {
- stats.forEach(function (stat) {
- stat.type = modernStatsTypes[stat.type] || stat.type;
- });
- } catch (e) {
- if (e.name !== 'TypeError') {
- throw e;
- } // Avoid TypeError: "type" is read-only, in old versions. 34-43ish
-
-
- stats.forEach(function (stat, i) {
- stats.set(i, Object.assign({}, stat, {
- type: modernStatsTypes[stat.type] || stat.type
- }));
- });
- }
- }
-
- return stats;
- }).then(onSucc, onErr);
- };
-}
-
-function shimSenderGetStats(window) {
- if (!(_typeof(window) === 'object' && window.RTCPeerConnection && window.RTCRtpSender)) {
- return;
- }
-
- if (window.RTCRtpSender && 'getStats' in window.RTCRtpSender.prototype) {
- return;
- }
-
- var origGetSenders = window.RTCPeerConnection.prototype.getSenders;
-
- if (origGetSenders) {
- window.RTCPeerConnection.prototype.getSenders = function getSenders() {
- var _this = this;
-
- var senders = origGetSenders.apply(this, []);
- senders.forEach(function (sender) {
- return sender._pc = _this;
- });
- return senders;
- };
- }
-
- var origAddTrack = window.RTCPeerConnection.prototype.addTrack;
-
- if (origAddTrack) {
- window.RTCPeerConnection.prototype.addTrack = function addTrack() {
- var sender = origAddTrack.apply(this, arguments);
- sender._pc = this;
- return sender;
- };
- }
-
- window.RTCRtpSender.prototype.getStats = function getStats() {
- return this.track ? this._pc.getStats(this.track) : Promise.resolve(new Map());
- };
-}
-
-function shimReceiverGetStats(window) {
- if (!(_typeof(window) === 'object' && window.RTCPeerConnection && window.RTCRtpSender)) {
- return;
- }
-
- if (window.RTCRtpSender && 'getStats' in window.RTCRtpReceiver.prototype) {
- return;
- }
-
- var origGetReceivers = window.RTCPeerConnection.prototype.getReceivers;
-
- if (origGetReceivers) {
- window.RTCPeerConnection.prototype.getReceivers = function getReceivers() {
- var _this2 = this;
-
- var receivers = origGetReceivers.apply(this, []);
- receivers.forEach(function (receiver) {
- return receiver._pc = _this2;
- });
- return receivers;
- };
- }
-
- utils.wrapPeerConnectionEvent(window, 'track', function (e) {
- e.receiver._pc = e.srcElement;
- return e;
- });
-
- window.RTCRtpReceiver.prototype.getStats = function getStats() {
- return this._pc.getStats(this.track);
- };
-}
-
-function shimRemoveStream(window) {
- if (!window.RTCPeerConnection || 'removeStream' in window.RTCPeerConnection.prototype) {
- return;
- }
-
- window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
- var _this3 = this;
-
- utils.deprecated('removeStream', 'removeTrack');
- this.getSenders().forEach(function (sender) {
- if (sender.track && stream.getTracks().includes(sender.track)) {
- _this3.removeTrack(sender);
- }
- });
- };
-}
-
-function shimRTCDataChannel(window) {
- // rename DataChannel to RTCDataChannel (native fix in FF60):
- // https://bugzilla.mozilla.org/show_bug.cgi?id=1173851
- if (window.DataChannel && !window.RTCDataChannel) {
- window.RTCDataChannel = window.DataChannel;
- }
-}
-
-function shimAddTransceiver(window) {
- // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647
- // Firefox ignores the init sendEncodings options passed to addTransceiver
- // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918
- if (!(_typeof(window) === 'object' && window.RTCPeerConnection)) {
- return;
- }
-
- var origAddTransceiver = window.RTCPeerConnection.prototype.addTransceiver;
-
- if (origAddTransceiver) {
- window.RTCPeerConnection.prototype.addTransceiver = function addTransceiver() {
- this.setParametersPromises = [];
- var initParameters = arguments[1];
- var shouldPerformCheck = initParameters && 'sendEncodings' in initParameters;
-
- if (shouldPerformCheck) {
- // If sendEncodings params are provided, validate grammar
- initParameters.sendEncodings.forEach(function (encodingParam) {
- if ('rid' in encodingParam) {
- var ridRegex = /^[a-z0-9]{0,16}$/i;
-
- if (!ridRegex.test(encodingParam.rid)) {
- throw new TypeError('Invalid RID value provided.');
- }
- }
-
- if ('scaleResolutionDownBy' in encodingParam) {
- if (!(parseFloat(encodingParam.scaleResolutionDownBy) >= 1.0)) {
- throw new RangeError('scale_resolution_down_by must be >= 1.0');
- }
- }
-
- if ('maxFramerate' in encodingParam) {
- if (!(parseFloat(encodingParam.maxFramerate) >= 0)) {
- throw new RangeError('max_framerate must be >= 0.0');
- }
- }
- });
- }
-
- var transceiver = origAddTransceiver.apply(this, arguments);
-
- if (shouldPerformCheck) {
- // Check if the init options were applied. If not we do this in an
- // asynchronous way and save the promise reference in a global object.
- // This is an ugly hack, but at the same time is way more robust than
- // checking the sender parameters before and after the createOffer
- // Also note that after the createoffer we are not 100% sure that
- // the params were asynchronously applied so we might miss the
- // opportunity to recreate offer.
- var {
- sender: sender
- } = transceiver;
- var params = sender.getParameters();
-
- if (!('encodings' in params) || // Avoid being fooled by patched getParameters() below.
- params.encodings.length === 1 && Object.keys(params.encodings[0]).length === 0) {
- params.encodings = initParameters.sendEncodings;
- sender.sendEncodings = initParameters.sendEncodings;
- this.setParametersPromises.push(sender.setParameters(params).then(function () {
- delete sender.sendEncodings;
- }).catch(function () {
- delete sender.sendEncodings;
- }));
- }
- }
-
- return transceiver;
- };
- }
-}
-
-function shimGetParameters(window) {
- if (!(_typeof(window) === 'object' && window.RTCRtpSender)) {
- return;
- }
-
- var origGetParameters = window.RTCRtpSender.prototype.getParameters;
-
- if (origGetParameters) {
- window.RTCRtpSender.prototype.getParameters = function getParameters() {
- var params = origGetParameters.apply(this, arguments);
-
- if (!('encodings' in params)) {
- params.encodings = [].concat(this.sendEncodings || [{}]);
- }
-
- return params;
- };
- }
-}
-
-function shimCreateOffer(window) {
- // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647
- // Firefox ignores the init sendEncodings options passed to addTransceiver
- // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918
- if (!(_typeof(window) === 'object' && window.RTCPeerConnection)) {
- return;
- }
-
- var origCreateOffer = window.RTCPeerConnection.prototype.createOffer;
-
- window.RTCPeerConnection.prototype.createOffer = function createOffer() {
- var _arguments = arguments,
- _this4 = this;
-
- if (this.setParametersPromises && this.setParametersPromises.length) {
- return Promise.all(this.setParametersPromises).then(function () {
- return origCreateOffer.apply(_this4, _arguments);
- }).finally(function () {
- _this4.setParametersPromises = [];
- });
- }
-
- return origCreateOffer.apply(this, arguments);
- };
-}
-
-function shimCreateAnswer(window) {
- // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647
- // Firefox ignores the init sendEncodings options passed to addTransceiver
- // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918
- if (!(_typeof(window) === 'object' && window.RTCPeerConnection)) {
- return;
- }
-
- var origCreateAnswer = window.RTCPeerConnection.prototype.createAnswer;
-
- window.RTCPeerConnection.prototype.createAnswer = function createAnswer() {
- var _arguments2 = arguments,
- _this5 = this;
-
- if (this.setParametersPromises && this.setParametersPromises.length) {
- return Promise.all(this.setParametersPromises).then(function () {
- return origCreateAnswer.apply(_this5, _arguments2);
- }).finally(function () {
- _this5.setParametersPromises = [];
- });
- }
-
- return origCreateAnswer.apply(this, arguments);
- };
-}
-},{"../utils":"iSxC","./getusermedia":"GzSv","./getdisplaymedia":"UuGU"}],"t1lL":[function(require,module,exports) {
-/*
- * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree.
- */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.shimLocalStreamsAPI = shimLocalStreamsAPI;
-exports.shimRemoteStreamsAPI = shimRemoteStreamsAPI;
-exports.shimCallbacksAPI = shimCallbacksAPI;
-exports.shimGetUserMedia = shimGetUserMedia;
-exports.shimConstraints = shimConstraints;
-exports.shimRTCIceServerUrls = shimRTCIceServerUrls;
-exports.shimTrackEventTransceiver = shimTrackEventTransceiver;
-exports.shimCreateOfferLegacy = shimCreateOfferLegacy;
-exports.shimAudioContext = shimAudioContext;
-
-var utils = _interopRequireWildcard(require("../utils"));
-
-function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
-
-function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function (obj) { return typeof obj; }; } else { _typeof = function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
-
-function shimLocalStreamsAPI(window) {
- if (_typeof(window) !== 'object' || !window.RTCPeerConnection) {
- return;
- }
-
- if (!('getLocalStreams' in window.RTCPeerConnection.prototype)) {
- window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() {
- if (!this._localStreams) {
- this._localStreams = [];
- }
-
- return this._localStreams;
- };
- }
-
- if (!('addStream' in window.RTCPeerConnection.prototype)) {
- var _addTrack = window.RTCPeerConnection.prototype.addTrack;
-
- window.RTCPeerConnection.prototype.addStream = function addStream(stream) {
- var _this = this;
-
- if (!this._localStreams) {
- this._localStreams = [];
- }
-
- if (!this._localStreams.includes(stream)) {
- this._localStreams.push(stream);
- } // Try to emulate Chrome's behaviour of adding in audio-video order.
- // Safari orders by track id.
-
-
- stream.getAudioTracks().forEach(function (track) {
- return _addTrack.call(_this, track, stream);
- });
- stream.getVideoTracks().forEach(function (track) {
- return _addTrack.call(_this, track, stream);
- });
- };
-
- window.RTCPeerConnection.prototype.addTrack = function addTrack(track) {
- var _this2 = this;
-
- for (var _len = arguments.length, streams = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
- streams[_key - 1] = arguments[_key];
- }
-
- if (streams) {
- streams.forEach(function (stream) {
- if (!_this2._localStreams) {
- _this2._localStreams = [stream];
- } else if (!_this2._localStreams.includes(stream)) {
- _this2._localStreams.push(stream);
- }
- });
- }
-
- return _addTrack.apply(this, arguments);
- };
- }
-
- if (!('removeStream' in window.RTCPeerConnection.prototype)) {
- window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) {
- var _this3 = this;
-
- if (!this._localStreams) {
- this._localStreams = [];
- }
-
- var index = this._localStreams.indexOf(stream);
-
- if (index === -1) {
- return;
- }
-
- this._localStreams.splice(index, 1);
-
- var tracks = stream.getTracks();
- this.getSenders().forEach(function (sender) {
- if (tracks.includes(sender.track)) {
- _this3.removeTrack(sender);
- }
- });
- };
- }
-}
-
-function shimRemoteStreamsAPI(window) {
- if (_typeof(window) !== 'object' || !window.RTCPeerConnection) {
- return;
- }
-
- if (!('getRemoteStreams' in window.RTCPeerConnection.prototype)) {
- window.RTCPeerConnection.prototype.getRemoteStreams = function getRemoteStreams() {
- return this._remoteStreams ? this._remoteStreams : [];
- };
- }
-
- if (!('onaddstream' in window.RTCPeerConnection.prototype)) {
- Object.defineProperty(window.RTCPeerConnection.prototype, 'onaddstream', {
- get: function () {
- return this._onaddstream;
- },
- set: function (f) {
- var _this4 = this;
-
- if (this._onaddstream) {
- this.removeEventListener('addstream', this._onaddstream);
- this.removeEventListener('track', this._onaddstreampoly);
- }
-
- this.addEventListener('addstream', this._onaddstream = f);
- this.addEventListener('track', this._onaddstreampoly = function (e) {
- e.streams.forEach(function (stream) {
- if (!_this4._remoteStreams) {
- _this4._remoteStreams = [];
- }
-
- if (_this4._remoteStreams.includes(stream)) {
- return;
- }
-
- _this4._remoteStreams.push(stream);
-
- var event = new Event('addstream');
- event.stream = stream;
-
- _this4.dispatchEvent(event);
- });
- });
- }
- });
- var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription;
-
- window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() {
- var pc = this;
-
- if (!this._onaddstreampoly) {
- this.addEventListener('track', this._onaddstreampoly = function (e) {
- e.streams.forEach(function (stream) {
- if (!pc._remoteStreams) {
- pc._remoteStreams = [];
- }
-
- if (pc._remoteStreams.indexOf(stream) >= 0) {
- return;
- }
-
- pc._remoteStreams.push(stream);
-
- var event = new Event('addstream');
- event.stream = stream;
- pc.dispatchEvent(event);
- });
- });
- }
-
- return origSetRemoteDescription.apply(pc, arguments);
- };
- }
-}
-
-function shimCallbacksAPI(window) {
- if (_typeof(window) !== 'object' || !window.RTCPeerConnection) {
- return;
- }
-
- var prototype = window.RTCPeerConnection.prototype;
- var origCreateOffer = prototype.createOffer;
- var origCreateAnswer = prototype.createAnswer;
- var setLocalDescription = prototype.setLocalDescription;
- var setRemoteDescription = prototype.setRemoteDescription;
- var addIceCandidate = prototype.addIceCandidate;
-
- prototype.createOffer = function createOffer(successCallback, failureCallback) {
- var options = arguments.length >= 2 ? arguments[2] : arguments[0];
- var promise = origCreateOffer.apply(this, [options]);
-
- if (!failureCallback) {
- return promise;
- }
-
- promise.then(successCallback, failureCallback);
- return Promise.resolve();
- };
-
- prototype.createAnswer = function createAnswer(successCallback, failureCallback) {
- var options = arguments.length >= 2 ? arguments[2] : arguments[0];
- var promise = origCreateAnswer.apply(this, [options]);
-
- if (!failureCallback) {
- return promise;
- }
-
- promise.then(successCallback, failureCallback);
- return Promise.resolve();
- };
-
- var withCallback = function (description, successCallback, failureCallback) {
- var promise = setLocalDescription.apply(this, [description]);
-
- if (!failureCallback) {
- return promise;
- }
-
- promise.then(successCallback, failureCallback);
- return Promise.resolve();
- };
-
- prototype.setLocalDescription = withCallback;
-
- withCallback = function (description, successCallback, failureCallback) {
- var promise = setRemoteDescription.apply(this, [description]);
-
- if (!failureCallback) {
- return promise;
- }
-
- promise.then(successCallback, failureCallback);
- return Promise.resolve();
- };
-
- prototype.setRemoteDescription = withCallback;
-
- withCallback = function (candidate, successCallback, failureCallback) {
- var promise = addIceCandidate.apply(this, [candidate]);
-
- if (!failureCallback) {
- return promise;
- }
-
- promise.then(successCallback, failureCallback);
- return Promise.resolve();
- };
-
- prototype.addIceCandidate = withCallback;
-}
-
-function shimGetUserMedia(window) {
- var navigator = window && window.navigator;
-
- if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
- // shim not needed in Safari 12.1
- var mediaDevices = navigator.mediaDevices;
-
- var _getUserMedia = mediaDevices.getUserMedia.bind(mediaDevices);
-
- navigator.mediaDevices.getUserMedia = function (constraints) {
- return _getUserMedia(shimConstraints(constraints));
- };
- }
-
- if (!navigator.getUserMedia && navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
- navigator.getUserMedia = function getUserMedia(constraints, cb, errcb) {
- navigator.mediaDevices.getUserMedia(constraints).then(cb, errcb);
- }.bind(navigator);
- }
-}
-
-function shimConstraints(constraints) {
- if (constraints && constraints.video !== undefined) {
- return Object.assign({}, constraints, {
- video: utils.compactObject(constraints.video)
- });
- }
-
- return constraints;
-}
-
-function shimRTCIceServerUrls(window) {
- if (!window.RTCPeerConnection) {
- return;
- } // migrate from non-spec RTCIceServer.url to RTCIceServer.urls
-
-
- var OrigPeerConnection = window.RTCPeerConnection;
-
- window.RTCPeerConnection = function RTCPeerConnection(pcConfig, pcConstraints) {
- if (pcConfig && pcConfig.iceServers) {
- var newIceServers = [];
-
- for (var i = 0; i < pcConfig.iceServers.length; i++) {
- var server = pcConfig.iceServers[i];
-
- if (!server.hasOwnProperty('urls') && server.hasOwnProperty('url')) {
- utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls');
- server = JSON.parse(JSON.stringify(server));
- server.urls = server.url;
- delete server.url;
- newIceServers.push(server);
- } else {
- newIceServers.push(pcConfig.iceServers[i]);
- }
- }
-
- pcConfig.iceServers = newIceServers;
- }
-
- return new OrigPeerConnection(pcConfig, pcConstraints);
- };
-
- window.RTCPeerConnection.prototype = OrigPeerConnection.prototype; // wrap static methods. Currently just generateCertificate.
-
- if ('generateCertificate' in OrigPeerConnection) {
- Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', {
- get: function () {
- return OrigPeerConnection.generateCertificate;
- }
- });
- }
-}
-
-function shimTrackEventTransceiver(window) {
- // Add event.transceiver member over deprecated event.receiver
- if (_typeof(window) === 'object' && window.RTCTrackEvent && 'receiver' in window.RTCTrackEvent.prototype && !('transceiver' in window.RTCTrackEvent.prototype)) {
- Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', {
- get: function () {
- return {
- receiver: this.receiver
- };
- }
- });
- }
-}
-
-function shimCreateOfferLegacy(window) {
- var origCreateOffer = window.RTCPeerConnection.prototype.createOffer;
-
- window.RTCPeerConnection.prototype.createOffer = function createOffer(offerOptions) {
- if (offerOptions) {
- if (typeof offerOptions.offerToReceiveAudio !== 'undefined') {
- // support bit values
- offerOptions.offerToReceiveAudio = !!offerOptions.offerToReceiveAudio;
- }
-
- var audioTransceiver = this.getTransceivers().find(function (transceiver) {
- return transceiver.receiver.track.kind === 'audio';
- });
-
- if (offerOptions.offerToReceiveAudio === false && audioTransceiver) {
- if (audioTransceiver.direction === 'sendrecv') {
- if (audioTransceiver.setDirection) {
- audioTransceiver.setDirection('sendonly');
- } else {
- audioTransceiver.direction = 'sendonly';
- }
- } else if (audioTransceiver.direction === 'recvonly') {
- if (audioTransceiver.setDirection) {
- audioTransceiver.setDirection('inactive');
- } else {
- audioTransceiver.direction = 'inactive';
- }
- }
- } else if (offerOptions.offerToReceiveAudio === true && !audioTransceiver) {
- this.addTransceiver('audio');
- }
-
- if (typeof offerOptions.offerToReceiveVideo !== 'undefined') {
- // support bit values
- offerOptions.offerToReceiveVideo = !!offerOptions.offerToReceiveVideo;
- }
-
- var videoTransceiver = this.getTransceivers().find(function (transceiver) {
- return transceiver.receiver.track.kind === 'video';
- });
-
- if (offerOptions.offerToReceiveVideo === false && videoTransceiver) {
- if (videoTransceiver.direction === 'sendrecv') {
- if (videoTransceiver.setDirection) {
- videoTransceiver.setDirection('sendonly');
- } else {
- videoTransceiver.direction = 'sendonly';
- }
- } else if (videoTransceiver.direction === 'recvonly') {
- if (videoTransceiver.setDirection) {
- videoTransceiver.setDirection('inactive');
- } else {
- videoTransceiver.direction = 'inactive';
- }
- }
- } else if (offerOptions.offerToReceiveVideo === true && !videoTransceiver) {
- this.addTransceiver('video');
- }
- }
-
- return origCreateOffer.apply(this, arguments);
- };
-}
-
-function shimAudioContext(window) {
- if (_typeof(window) !== 'object' || window.AudioContext) {
- return;
- }
-
- window.AudioContext = window.webkitAudioContext;
-}
-},{"../utils":"iSxC"}],"GOQK":[function(require,module,exports) {
-/*
- * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.shimRTCIceCandidate = shimRTCIceCandidate;
-exports.shimMaxMessageSize = shimMaxMessageSize;
-exports.shimSendThrowTypeError = shimSendThrowTypeError;
-exports.shimConnectionState = shimConnectionState;
-exports.removeExtmapAllowMixed = removeExtmapAllowMixed;
-exports.shimAddIceCandidateNullOrEmpty = shimAddIceCandidateNullOrEmpty;
-
-var _sdp = _interopRequireDefault(require("sdp"));
-
-var utils = _interopRequireWildcard(require("./utils"));
-
-function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
-
-function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
-
-function _typeof(obj) { if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function (obj) { return typeof obj; }; } else { _typeof = function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }
-
-function shimRTCIceCandidate(window) {
- // foundation is arbitrarily chosen as an indicator for full support for
- // https://w3c.github.io/webrtc-pc/#rtcicecandidate-interface
- if (!window.RTCIceCandidate || window.RTCIceCandidate && 'foundation' in window.RTCIceCandidate.prototype) {
- return;
- }
-
- var NativeRTCIceCandidate = window.RTCIceCandidate;
-
- window.RTCIceCandidate = function RTCIceCandidate(args) {
- // Remove the a= which shouldn't be part of the candidate string.
- if (_typeof(args) === 'object' && args.candidate && args.candidate.indexOf('a=') === 0) {
- args = JSON.parse(JSON.stringify(args));
- args.candidate = args.candidate.substr(2);
- }
-
- if (args.candidate && args.candidate.length) {
- // Augment the native candidate with the parsed fields.
- var nativeCandidate = new NativeRTCIceCandidate(args);
-
- var parsedCandidate = _sdp.default.parseCandidate(args.candidate);
-
- var augmentedCandidate = Object.assign(nativeCandidate, parsedCandidate); // Add a serializer that does not serialize the extra attributes.
-
- augmentedCandidate.toJSON = function toJSON() {
- return {
- candidate: augmentedCandidate.candidate,
- sdpMid: augmentedCandidate.sdpMid,
- sdpMLineIndex: augmentedCandidate.sdpMLineIndex,
- usernameFragment: augmentedCandidate.usernameFragment
- };
- };
-
- return augmentedCandidate;
- }
-
- return new NativeRTCIceCandidate(args);
- };
-
- window.RTCIceCandidate.prototype = NativeRTCIceCandidate.prototype; // Hook up the augmented candidate in onicecandidate and
- // addEventListener('icecandidate', ...)
-
- utils.wrapPeerConnectionEvent(window, 'icecandidate', function (e) {
- if (e.candidate) {
- Object.defineProperty(e, 'candidate', {
- value: new window.RTCIceCandidate(e.candidate),
- writable: 'false'
- });
- }
-
- return e;
- });
-}
-
-function shimMaxMessageSize(window, browserDetails) {
- if (!window.RTCPeerConnection) {
- return;
- }
-
- if (!('sctp' in window.RTCPeerConnection.prototype)) {
- Object.defineProperty(window.RTCPeerConnection.prototype, 'sctp', {
- get: function () {
- return typeof this._sctp === 'undefined' ? null : this._sctp;
- }
- });
- }
-
- var sctpInDescription = function (description) {
- if (!description || !description.sdp) {
- return false;
- }
-
- var sections = _sdp.default.splitSections(description.sdp);
-
- sections.shift();
- return sections.some(function (mediaSection) {
- var mLine = _sdp.default.parseMLine(mediaSection);
-
- return mLine && mLine.kind === 'application' && mLine.protocol.indexOf('SCTP') !== -1;
- });
- };
-
- var getRemoteFirefoxVersion = function (description) {
- // TODO: Is there a better solution for detecting Firefox?
- var match = description.sdp.match(/mozilla...THIS_IS_SDPARTA-(\d+)/);
-
- if (match === null || match.length < 2) {
- return -1;
- }
-
- var version = parseInt(match[1], 10); // Test for NaN (yes, this is ugly)
-
- return version !== version ? -1 : version;
- };
-
- var getCanSendMaxMessageSize = function (remoteIsFirefox) {
- // Every implementation we know can send at least 64 KiB.
- // Note: Although Chrome is technically able to send up to 256 KiB, the
- // data does not reach the other peer reliably.
- // See: https://bugs.chromium.org/p/webrtc/issues/detail?id=8419
- var canSendMaxMessageSize = 65536;
-
- if (browserDetails.browser === 'firefox') {
- if (browserDetails.version < 57) {
- if (remoteIsFirefox === -1) {
- // FF < 57 will send in 16 KiB chunks using the deprecated PPID
- // fragmentation.
- canSendMaxMessageSize = 16384;
- } else {
- // However, other FF (and RAWRTC) can reassemble PPID-fragmented
- // messages. Thus, supporting ~2 GiB when sending.
- canSendMaxMessageSize = 2147483637;
- }
- } else if (browserDetails.version < 60) {
- // Currently, all FF >= 57 will reset the remote maximum message size
- // to the default value when a data channel is created at a later
- // stage. :(
- // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831
- canSendMaxMessageSize = browserDetails.version === 57 ? 65535 : 65536;
- } else {
- // FF >= 60 supports sending ~2 GiB
- canSendMaxMessageSize = 2147483637;
- }
- }
-
- return canSendMaxMessageSize;
- };
-
- var getMaxMessageSize = function (description, remoteIsFirefox) {
- // Note: 65536 bytes is the default value from the SDP spec. Also,
- // every implementation we know supports receiving 65536 bytes.
- var maxMessageSize = 65536; // FF 57 has a slightly incorrect default remote max message size, so
- // we need to adjust it here to avoid a failure when sending.
- // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1425697
-
- if (browserDetails.browser === 'firefox' && browserDetails.version === 57) {
- maxMessageSize = 65535;
- }
-
- var match = _sdp.default.matchPrefix(description.sdp, 'a=max-message-size:');
-
- if (match.length > 0) {
- maxMessageSize = parseInt(match[0].substr(19), 10);
- } else if (browserDetails.browser === 'firefox' && remoteIsFirefox !== -1) {
- // If the maximum message size is not present in the remote SDP and
- // both local and remote are Firefox, the remote peer can receive
- // ~2 GiB.
- maxMessageSize = 2147483637;
- }
-
- return maxMessageSize;
- };
-
- var origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription;
-
- window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() {
- this._sctp = null; // Chrome decided to not expose .sctp in plan-b mode.
- // As usual, adapter.js has to do an 'ugly worakaround'
- // to cover up the mess.
-
- if (browserDetails.browser === 'chrome' && browserDetails.version >= 76) {
- var {
- sdpSemantics: sdpSemantics
- } = this.getConfiguration();
-
- if (sdpSemantics === 'plan-b') {
- Object.defineProperty(this, 'sctp', {
- get: function () {
- return typeof this._sctp === 'undefined' ? null : this._sctp;
- },
- enumerable: true,
- configurable: true
- });
- }
- }
-
- if (sctpInDescription(arguments[0])) {
- // Check if the remote is FF.
- var isFirefox = getRemoteFirefoxVersion(arguments[0]); // Get the maximum message size the local peer is capable of sending
-
- var canSendMMS = getCanSendMaxMessageSize(isFirefox); // Get the maximum message size of the remote peer.
-
- var remoteMMS = getMaxMessageSize(arguments[0], isFirefox); // Determine final maximum message size
-
- var maxMessageSize;
-
- if (canSendMMS === 0 && remoteMMS === 0) {
- maxMessageSize = Number.POSITIVE_INFINITY;
- } else if (canSendMMS === 0 || remoteMMS === 0) {
- maxMessageSize = Math.max(canSendMMS, remoteMMS);
- } else {
- maxMessageSize = Math.min(canSendMMS, remoteMMS);
- } // Create a dummy RTCSctpTransport object and the 'maxMessageSize'
- // attribute.
-
-
- var sctp = {};
- Object.defineProperty(sctp, 'maxMessageSize', {
- get: function () {
- return maxMessageSize;
- }
- });
- this._sctp = sctp;
- }
-
- return origSetRemoteDescription.apply(this, arguments);
- };
-}
-
-function shimSendThrowTypeError(window) {
- if (!(window.RTCPeerConnection && 'createDataChannel' in window.RTCPeerConnection.prototype)) {
- return;
- } // Note: Although Firefox >= 57 has a native implementation, the maximum
- // message size can be reset for all data channels at a later stage.
- // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831
-
-
- function wrapDcSend(dc, pc) {
- var origDataChannelSend = dc.send;
-
- dc.send = function send() {
- var data = arguments[0];
- var length = data.length || data.size || data.byteLength;
-
- if (dc.readyState === 'open' && pc.sctp && length > pc.sctp.maxMessageSize) {
- throw new TypeError('Message too large (can send a maximum of ' + pc.sctp.maxMessageSize + ' bytes)');
- }
-
- return origDataChannelSend.apply(dc, arguments);
- };
- }
-
- var origCreateDataChannel = window.RTCPeerConnection.prototype.createDataChannel;
-
- window.RTCPeerConnection.prototype.createDataChannel = function createDataChannel() {
- var dataChannel = origCreateDataChannel.apply(this, arguments);
- wrapDcSend(dataChannel, this);
- return dataChannel;
- };
-
- utils.wrapPeerConnectionEvent(window, 'datachannel', function (e) {
- wrapDcSend(e.channel, e.target);
- return e;
- });
-}
-/* shims RTCConnectionState by pretending it is the same as iceConnectionState.
- * See https://bugs.chromium.org/p/webrtc/issues/detail?id=6145#c12
- * for why this is a valid hack in Chrome. In Firefox it is slightly incorrect
- * since DTLS failures would be hidden. See
- * https://bugzilla.mozilla.org/show_bug.cgi?id=1265827
- * for the Firefox tracking bug.
- */
-
-
-function shimConnectionState(window) {
- if (!window.RTCPeerConnection || 'connectionState' in window.RTCPeerConnection.prototype) {
- return;
- }
-
- var proto = window.RTCPeerConnection.prototype;
- Object.defineProperty(proto, 'connectionState', {
- get: function () {
- return {
- completed: 'connected',
- checking: 'connecting'
- }[this.iceConnectionState] || this.iceConnectionState;
- },
- enumerable: true,
- configurable: true
- });
- Object.defineProperty(proto, 'onconnectionstatechange', {
- get: function () {
- return this._onconnectionstatechange || null;
- },
- set: function (cb) {
- if (this._onconnectionstatechange) {
- this.removeEventListener('connectionstatechange', this._onconnectionstatechange);
- delete this._onconnectionstatechange;
- }
-
- if (cb) {
- this.addEventListener('connectionstatechange', this._onconnectionstatechange = cb);
- }
- },
- enumerable: true,
- configurable: true
- });
- ['setLocalDescription', 'setRemoteDescription'].forEach(function (method) {
- var origMethod = proto[method];
-
- proto[method] = function () {
- if (!this._connectionstatechangepoly) {
- this._connectionstatechangepoly = function (e) {
- var pc = e.target;
-
- if (pc._lastConnectionState !== pc.connectionState) {
- pc._lastConnectionState = pc.connectionState;
- var newEvent = new Event('connectionstatechange', e);
- pc.dispatchEvent(newEvent);
- }
-
- return e;
- };
-
- this.addEventListener('iceconnectionstatechange', this._connectionstatechangepoly);
- }
-
- return origMethod.apply(this, arguments);
- };
- });
-}
-
-function removeExtmapAllowMixed(window, browserDetails) {
- /* remove a=extmap-allow-mixed for webrtc.org < M71 */
- if (!window.RTCPeerConnection) {
- return;
- }
-
- if (browserDetails.browser === 'chrome' && browserDetails.version >= 71) {
- return;
- }
-
- if (browserDetails.browser === 'safari' && browserDetails.version >= 605) {
- return;
- }
-
- var nativeSRD = window.RTCPeerConnection.prototype.setRemoteDescription;
-
- window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription(desc) {
- if (desc && desc.sdp && desc.sdp.indexOf('\na=extmap-allow-mixed') !== -1) {
- var sdp = desc.sdp.split('\n').filter(function (line) {
- return line.trim() !== 'a=extmap-allow-mixed';
- }).join('\n'); // Safari enforces read-only-ness of RTCSessionDescription fields.
-
- if (window.RTCSessionDescription && desc instanceof window.RTCSessionDescription) {
- arguments[0] = new window.RTCSessionDescription({
- type: desc.type,
- sdp: sdp
- });
- } else {
- desc.sdp = sdp;
- }
- }
-
- return nativeSRD.apply(this, arguments);
- };
-}
-
-function shimAddIceCandidateNullOrEmpty(window, browserDetails) {
- // Support for addIceCandidate(null or undefined)
- // as well as addIceCandidate({candidate: "", ...})
- // https://bugs.chromium.org/p/chromium/issues/detail?id=978582
- // Note: must be called before other polyfills which change the signature.
- if (!(window.RTCPeerConnection && window.RTCPeerConnection.prototype)) {
- return;
- }
-
- var nativeAddIceCandidate = window.RTCPeerConnection.prototype.addIceCandidate;
-
- if (!nativeAddIceCandidate || nativeAddIceCandidate.length === 0) {
- return;
- }
-
- window.RTCPeerConnection.prototype.addIceCandidate = function addIceCandidate() {
- if (!arguments[0]) {
- if (arguments[1]) {
- arguments[1].apply(null);
- }
-
- return Promise.resolve();
- } // Firefox 68+ emits and processes {candidate: "", ...}, ignore
- // in older versions.
- // Native support for ignoring exists for Chrome M77+.
- // Safari ignores as well, exact version unknown but works in the same
- // version that also ignores addIceCandidate(null).
-
-
- if ((browserDetails.browser === 'chrome' && browserDetails.version < 78 || browserDetails.browser === 'firefox' && browserDetails.version < 68 || browserDetails.browser === 'safari') && arguments[0] && arguments[0].candidate === '') {
- return Promise.resolve();
- }
-
- return nativeAddIceCandidate.apply(this, arguments);
- };
-}
-},{"sdp":"YHvh","./utils":"iSxC"}],"KtlG":[function(require,module,exports) {
-"use strict";
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.adapterFactory = adapterFactory;
-
-var utils = _interopRequireWildcard(require("./utils"));
-
-var chromeShim = _interopRequireWildcard(require("./chrome/chrome_shim"));
-
-var edgeShim = _interopRequireWildcard(require("./edge/edge_shim"));
-
-var firefoxShim = _interopRequireWildcard(require("./firefox/firefox_shim"));
-
-var safariShim = _interopRequireWildcard(require("./safari/safari_shim"));
-
-var commonShim = _interopRequireWildcard(require("./common_shim"));
-
-function _getRequireWildcardCache() { if (typeof WeakMap !== "function") return null; var cache = new WeakMap(); _getRequireWildcardCache = function () { return cache; }; return cache; }
-
-function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } if (obj === null || typeof obj !== "object" && typeof obj !== "function") { return { default: obj }; } var cache = _getRequireWildcardCache(); if (cache && cache.has(obj)) { return cache.get(obj); } var newObj = {}; var hasPropertyDescriptor = Object.defineProperty && Object.getOwnPropertyDescriptor; for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { var desc = hasPropertyDescriptor ? Object.getOwnPropertyDescriptor(obj, key) : null; if (desc && (desc.get || desc.set)) { Object.defineProperty(newObj, key, desc); } else { newObj[key] = obj[key]; } } } newObj.default = obj; if (cache) { cache.set(obj, newObj); } return newObj; }
-
-/*
- * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree.
- */
-// Browser shims.
-// Shimming starts here.
-function adapterFactory() {
- var {
- window: window
- } = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};
- var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {
- shimChrome: true,
- shimFirefox: true,
- shimEdge: true,
- shimSafari: true
- };
- // Utils.
- var logging = utils.log;
- var browserDetails = utils.detectBrowser(window);
- var adapter = {
- browserDetails: browserDetails,
- commonShim: commonShim,
- extractVersion: utils.extractVersion,
- disableLog: utils.disableLog,
- disableWarnings: utils.disableWarnings
- }; // Shim browser if found.
-
- switch (browserDetails.browser) {
- case 'chrome':
- if (!chromeShim || !chromeShim.shimPeerConnection || !options.shimChrome) {
- logging('Chrome shim is not included in this adapter release.');
- return adapter;
- }
-
- if (browserDetails.version === null) {
- logging('Chrome shim can not determine version, not shimming.');
- return adapter;
- }
-
- logging('adapter.js shimming chrome.'); // Export to the adapter global object visible in the browser.
-
- adapter.browserShim = chromeShim; // Must be called before shimPeerConnection.
-
- commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);
- chromeShim.shimGetUserMedia(window, browserDetails);
- chromeShim.shimMediaStream(window, browserDetails);
- chromeShim.shimPeerConnection(window, browserDetails);
- chromeShim.shimOnTrack(window, browserDetails);
- chromeShim.shimAddTrackRemoveTrack(window, browserDetails);
- chromeShim.shimGetSendersWithDtmf(window, browserDetails);
- chromeShim.shimGetStats(window, browserDetails);
- chromeShim.shimSenderReceiverGetStats(window, browserDetails);
- chromeShim.fixNegotiationNeeded(window, browserDetails);
- commonShim.shimRTCIceCandidate(window, browserDetails);
- commonShim.shimConnectionState(window, browserDetails);
- commonShim.shimMaxMessageSize(window, browserDetails);
- commonShim.shimSendThrowTypeError(window, browserDetails);
- commonShim.removeExtmapAllowMixed(window, browserDetails);
- break;
-
- case 'firefox':
- if (!firefoxShim || !firefoxShim.shimPeerConnection || !options.shimFirefox) {
- logging('Firefox shim is not included in this adapter release.');
- return adapter;
- }
-
- logging('adapter.js shimming firefox.'); // Export to the adapter global object visible in the browser.
-
- adapter.browserShim = firefoxShim; // Must be called before shimPeerConnection.
-
- commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);
- firefoxShim.shimGetUserMedia(window, browserDetails);
- firefoxShim.shimPeerConnection(window, browserDetails);
- firefoxShim.shimOnTrack(window, browserDetails);
- firefoxShim.shimRemoveStream(window, browserDetails);
- firefoxShim.shimSenderGetStats(window, browserDetails);
- firefoxShim.shimReceiverGetStats(window, browserDetails);
- firefoxShim.shimRTCDataChannel(window, browserDetails);
- firefoxShim.shimAddTransceiver(window, browserDetails);
- firefoxShim.shimGetParameters(window, browserDetails);
- firefoxShim.shimCreateOffer(window, browserDetails);
- firefoxShim.shimCreateAnswer(window, browserDetails);
- commonShim.shimRTCIceCandidate(window, browserDetails);
- commonShim.shimConnectionState(window, browserDetails);
- commonShim.shimMaxMessageSize(window, browserDetails);
- commonShim.shimSendThrowTypeError(window, browserDetails);
- break;
-
- case 'edge':
- if (!edgeShim || !edgeShim.shimPeerConnection || !options.shimEdge) {
- logging('MS edge shim is not included in this adapter release.');
- return adapter;
- }
-
- logging('adapter.js shimming edge.'); // Export to the adapter global object visible in the browser.
-
- adapter.browserShim = edgeShim;
- edgeShim.shimGetUserMedia(window, browserDetails);
- edgeShim.shimGetDisplayMedia(window, browserDetails);
- edgeShim.shimPeerConnection(window, browserDetails);
- edgeShim.shimReplaceTrack(window, browserDetails); // the edge shim implements the full RTCIceCandidate object.
-
- commonShim.shimMaxMessageSize(window, browserDetails);
- commonShim.shimSendThrowTypeError(window, browserDetails);
- break;
-
- case 'safari':
- if (!safariShim || !options.shimSafari) {
- logging('Safari shim is not included in this adapter release.');
- return adapter;
- }
-
- logging('adapter.js shimming safari.'); // Export to the adapter global object visible in the browser.
-
- adapter.browserShim = safariShim; // Must be called before shimCallbackAPI.
-
- commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);
- safariShim.shimRTCIceServerUrls(window, browserDetails);
- safariShim.shimCreateOfferLegacy(window, browserDetails);
- safariShim.shimCallbacksAPI(window, browserDetails);
- safariShim.shimLocalStreamsAPI(window, browserDetails);
- safariShim.shimRemoteStreamsAPI(window, browserDetails);
- safariShim.shimTrackEventTransceiver(window, browserDetails);
- safariShim.shimGetUserMedia(window, browserDetails);
- safariShim.shimAudioContext(window, browserDetails);
- commonShim.shimRTCIceCandidate(window, browserDetails);
- commonShim.shimMaxMessageSize(window, browserDetails);
- commonShim.shimSendThrowTypeError(window, browserDetails);
- commonShim.removeExtmapAllowMixed(window, browserDetails);
- break;
-
- default:
- logging('Unsupported browser!');
- break;
- }
-
- return adapter;
-}
-},{"./utils":"iSxC","./chrome/chrome_shim":"uI5X","./edge/edge_shim":"XRic","./firefox/firefox_shim":"Fzdr","./safari/safari_shim":"t1lL","./common_shim":"GOQK"}],"tI1X":[function(require,module,exports) {
-/*
- * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.
- *
- * Use of this source code is governed by a BSD-style license
- * that can be found in the LICENSE file in the root of the source
- * tree.
- */
-
-/* eslint-env node */
-'use strict';
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.default = void 0;
-
-var _adapter_factory = require("./adapter_factory.js");
-
-var adapter = (0, _adapter_factory.adapterFactory)({
- window: typeof window === 'undefined' ? undefined : window
-});
-var _default = adapter;
-exports.default = _default;
-},{"./adapter_factory.js":"KtlG"}],"sXtV":[function(require,module,exports) {
-"use strict";
-
-var __importDefault = this && this.__importDefault || function (mod) {
- return mod && mod.__esModule ? mod : {
- "default": mod
- };
-};
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.webRTCAdapter = void 0;
-
-var webrtc_adapter_1 = __importDefault(require("webrtc-adapter"));
-
-exports.webRTCAdapter = webrtc_adapter_1.default;
-},{"webrtc-adapter":"tI1X"}],"I31f":[function(require,module,exports) {
-"use strict";
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.Supports = void 0;
-
-var adapter_1 = require("./adapter");
-
-exports.Supports = new (
-/** @class */
-function () {
- function class_1() {
- this.isIOS = ['iPad', 'iPhone', 'iPod'].includes(navigator.platform);
- this.supportedBrowsers = ['firefox', 'chrome', 'safari'];
- this.minFirefoxVersion = 59;
- this.minChromeVersion = 72;
- this.minSafariVersion = 605;
- }
-
- class_1.prototype.isWebRTCSupported = function () {
- return typeof RTCPeerConnection !== 'undefined';
- };
-
- class_1.prototype.isBrowserSupported = function () {
- var browser = this.getBrowser();
- var version = this.getVersion();
- var validBrowser = this.supportedBrowsers.includes(browser);
- if (!validBrowser) return false;
- if (browser === 'chrome') return version >= this.minChromeVersion;
- if (browser === 'firefox') return version >= this.minFirefoxVersion;
- if (browser === 'safari') return !this.isIOS && version >= this.minSafariVersion;
- return false;
- };
-
- class_1.prototype.getBrowser = function () {
- return adapter_1.webRTCAdapter.browserDetails.browser;
- };
-
- class_1.prototype.getVersion = function () {
- return adapter_1.webRTCAdapter.browserDetails.version || 0;
- };
-
- class_1.prototype.isUnifiedPlanSupported = function () {
- var browser = this.getBrowser();
- var version = adapter_1.webRTCAdapter.browserDetails.version || 0;
- if (browser === 'chrome' && version < 72) return false;
- if (browser === 'firefox' && version >= 59) return true;
- if (!window.RTCRtpTransceiver || !('currentDirection' in RTCRtpTransceiver.prototype)) return false;
- var tempPc;
- var supported = false;
-
- try {
- tempPc = new RTCPeerConnection();
- tempPc.addTransceiver('audio');
- supported = true;
- } catch (e) {} finally {
- if (tempPc) {
- tempPc.close();
- }
- }
-
- return supported;
- };
-
- class_1.prototype.toString = function () {
- return "Supports: \n browser:" + this.getBrowser() + " \n version:" + this.getVersion() + " \n isIOS:" + this.isIOS + " \n isWebRTCSupported:" + this.isWebRTCSupported() + " \n isBrowserSupported:" + this.isBrowserSupported() + " \n isUnifiedPlanSupported:" + this.isUnifiedPlanSupported();
- };
-
- return class_1;
-}())();
-},{"./adapter":"sXtV"}],"BHXf":[function(require,module,exports) {
-"use strict";
-
-var __createBinding = this && this.__createBinding || (Object.create ? function (o, m, k, k2) {
- if (k2 === undefined) k2 = k;
- Object.defineProperty(o, k2, {
- enumerable: true,
- get: function get() {
- return m[k];
- }
- });
-} : function (o, m, k, k2) {
- if (k2 === undefined) k2 = k;
- o[k2] = m[k];
-});
-
-var __setModuleDefault = this && this.__setModuleDefault || (Object.create ? function (o, v) {
- Object.defineProperty(o, "default", {
- enumerable: true,
- value: v
- });
-} : function (o, v) {
- o["default"] = v;
-});
-
-var __importStar = this && this.__importStar || function (mod) {
- if (mod && mod.__esModule) return mod;
- var result = {};
- if (mod != null) for (var k in mod) {
- if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
- }
-
- __setModuleDefault(result, mod);
-
- return result;
-};
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.util = void 0;
-
-var BinaryPack = __importStar(require("peerjs-js-binarypack"));
-
-var supports_1 = require("./supports");
-
-var DEFAULT_CONFIG = {
- iceServers: [{
- urls: "stun:stun.l.google.com:19302"
- }, {
- urls: "turn:0.peerjs.com:3478",
- username: "peerjs",
- credential: "peerjsp"
- }],
- sdpSemantics: "unified-plan"
-};
-exports.util = new (
-/** @class */
-function () {
- function class_1() {
- this.CLOUD_HOST = "0.peerjs.com";
- this.CLOUD_PORT = 443; // Browsers that need chunking:
-
- this.chunkedBrowsers = {
- Chrome: 1,
- chrome: 1
- };
- this.chunkedMTU = 16300; // The original 60000 bytes setting does not work when sending data from Firefox to Chrome, which is "cut off" after 16384 bytes and delivered individually.
- // Returns browser-agnostic default config
-
- this.defaultConfig = DEFAULT_CONFIG;
- this.browser = supports_1.Supports.getBrowser();
- this.browserVersion = supports_1.Supports.getVersion(); // Lists which features are supported
-
- this.supports = function () {
- var supported = {
- browser: supports_1.Supports.isBrowserSupported(),
- webRTC: supports_1.Supports.isWebRTCSupported(),
- audioVideo: false,
- data: false,
- binaryBlob: false,
- reliable: false
- };
- if (!supported.webRTC) return supported;
- var pc;
-
- try {
- pc = new RTCPeerConnection(DEFAULT_CONFIG);
- supported.audioVideo = true;
- var dc = void 0;
-
- try {
- dc = pc.createDataChannel("_PEERJSTEST", {
- ordered: true
- });
- supported.data = true;
- supported.reliable = !!dc.ordered; // Binary test
-
- try {
- dc.binaryType = "blob";
- supported.binaryBlob = !supports_1.Supports.isIOS;
- } catch (e) {}
- } catch (e) {} finally {
- if (dc) {
- dc.close();
- }
- }
- } catch (e) {} finally {
- if (pc) {
- pc.close();
- }
- }
-
- return supported;
- }();
-
- this.pack = BinaryPack.pack;
- this.unpack = BinaryPack.unpack; // Binary stuff
-
- this._dataCount = 1;
- }
-
- class_1.prototype.noop = function () {}; // Ensure alphanumeric ids
-
-
- class_1.prototype.validateId = function (id) {
- // Allow empty ids
- return !id || /^[A-Za-z0-9]+(?:[ _-][A-Za-z0-9]+)*$/.test(id);
- };
-
- class_1.prototype.chunk = function (blob) {
- var chunks = [];
- var size = blob.size;
- var total = Math.ceil(size / exports.util.chunkedMTU);
- var index = 0;
- var start = 0;
-
- while (start < size) {
- var end = Math.min(size, start + exports.util.chunkedMTU);
- var b = blob.slice(start, end);
- var chunk = {
- __peerData: this._dataCount,
- n: index,
- data: b,
- total: total
- };
- chunks.push(chunk);
- start = end;
- index++;
- }
-
- this._dataCount++;
- return chunks;
- };
-
- class_1.prototype.blobToArrayBuffer = function (blob, cb) {
- var fr = new FileReader();
-
- fr.onload = function (evt) {
- if (evt.target) {
- cb(evt.target.result);
- }
- };
-
- fr.readAsArrayBuffer(blob);
- return fr;
- };
-
- class_1.prototype.binaryStringToArrayBuffer = function (binary) {
- var byteArray = new Uint8Array(binary.length);
-
- for (var i = 0; i < binary.length; i++) {
- byteArray[i] = binary.charCodeAt(i) & 0xff;
- }
-
- return byteArray.buffer;
- };
-
- class_1.prototype.randomToken = function () {
- return Math.random().toString(36).substr(2);
- };
-
- class_1.prototype.isSecure = function () {
- return location.protocol === "https:";
- };
-
- return class_1;
-}())();
-},{"peerjs-js-binarypack":"kdPp","./supports":"I31f"}],"JJlS":[function(require,module,exports) {
-'use strict';
-
-var has = Object.prototype.hasOwnProperty
- , prefix = '~';
-
-/**
- * Constructor to create a storage for our `EE` objects.
- * An `Events` instance is a plain object whose properties are event names.
- *
- * @constructor
- * @private
- */
-function Events() {}
-
-//
-// We try to not inherit from `Object.prototype`. In some engines creating an
-// instance in this way is faster than calling `Object.create(null)` directly.
-// If `Object.create(null)` is not supported we prefix the event names with a
-// character to make sure that the built-in object properties are not
-// overridden or used as an attack vector.
-//
-if (Object.create) {
- Events.prototype = Object.create(null);
-
- //
- // This hack is needed because the `__proto__` property is still inherited in
- // some old browsers like Android 4, iPhone 5.1, Opera 11 and Safari 5.
- //
- if (!new Events().__proto__) prefix = false;
-}
-
-/**
- * Representation of a single event listener.
- *
- * @param {Function} fn The listener function.
- * @param {*} context The context to invoke the listener with.
- * @param {Boolean} [once=false] Specify if the listener is a one-time listener.
- * @constructor
- * @private
- */
-function EE(fn, context, once) {
- this.fn = fn;
- this.context = context;
- this.once = once || false;
-}
-
-/**
- * Add a listener for a given event.
- *
- * @param {EventEmitter} emitter Reference to the `EventEmitter` instance.
- * @param {(String|Symbol)} event The event name.
- * @param {Function} fn The listener function.
- * @param {*} context The context to invoke the listener with.
- * @param {Boolean} once Specify if the listener is a one-time listener.
- * @returns {EventEmitter}
- * @private
- */
-function addListener(emitter, event, fn, context, once) {
- if (typeof fn !== 'function') {
- throw new TypeError('The listener must be a function');
- }
-
- var listener = new EE(fn, context || emitter, once)
- , evt = prefix ? prefix + event : event;
-
- if (!emitter._events[evt]) emitter._events[evt] = listener, emitter._eventsCount++;
- else if (!emitter._events[evt].fn) emitter._events[evt].push(listener);
- else emitter._events[evt] = [emitter._events[evt], listener];
-
- return emitter;
-}
-
-/**
- * Clear event by name.
- *
- * @param {EventEmitter} emitter Reference to the `EventEmitter` instance.
- * @param {(String|Symbol)} evt The Event name.
- * @private
- */
-function clearEvent(emitter, evt) {
- if (--emitter._eventsCount === 0) emitter._events = new Events();
- else delete emitter._events[evt];
-}
-
-/**
- * Minimal `EventEmitter` interface that is molded against the Node.js
- * `EventEmitter` interface.
- *
- * @constructor
- * @public
- */
-function EventEmitter() {
- this._events = new Events();
- this._eventsCount = 0;
-}
-
-/**
- * Return an array listing the events for which the emitter has registered
- * listeners.
- *
- * @returns {Array}
- * @public
- */
-EventEmitter.prototype.eventNames = function eventNames() {
- var names = []
- , events
- , name;
-
- if (this._eventsCount === 0) return names;
-
- for (name in (events = this._events)) {
- if (has.call(events, name)) names.push(prefix ? name.slice(1) : name);
- }
-
- if (Object.getOwnPropertySymbols) {
- return names.concat(Object.getOwnPropertySymbols(events));
- }
-
- return names;
-};
-
-/**
- * Return the listeners registered for a given event.
- *
- * @param {(String|Symbol)} event The event name.
- * @returns {Array} The registered listeners.
- * @public
- */
-EventEmitter.prototype.listeners = function listeners(event) {
- var evt = prefix ? prefix + event : event
- , handlers = this._events[evt];
-
- if (!handlers) return [];
- if (handlers.fn) return [handlers.fn];
-
- for (var i = 0, l = handlers.length, ee = new Array(l); i < l; i++) {
- ee[i] = handlers[i].fn;
- }
-
- return ee;
-};
-
-/**
- * Return the number of listeners listening to a given event.
- *
- * @param {(String|Symbol)} event The event name.
- * @returns {Number} The number of listeners.
- * @public
- */
-EventEmitter.prototype.listenerCount = function listenerCount(event) {
- var evt = prefix ? prefix + event : event
- , listeners = this._events[evt];
-
- if (!listeners) return 0;
- if (listeners.fn) return 1;
- return listeners.length;
-};
-
-/**
- * Calls each of the listeners registered for a given event.
- *
- * @param {(String|Symbol)} event The event name.
- * @returns {Boolean} `true` if the event had listeners, else `false`.
- * @public
- */
-EventEmitter.prototype.emit = function emit(event, a1, a2, a3, a4, a5) {
- var evt = prefix ? prefix + event : event;
-
- if (!this._events[evt]) return false;
-
- var listeners = this._events[evt]
- , len = arguments.length
- , args
- , i;
-
- if (listeners.fn) {
- if (listeners.once) this.removeListener(event, listeners.fn, undefined, true);
-
- switch (len) {
- case 1: return listeners.fn.call(listeners.context), true;
- case 2: return listeners.fn.call(listeners.context, a1), true;
- case 3: return listeners.fn.call(listeners.context, a1, a2), true;
- case 4: return listeners.fn.call(listeners.context, a1, a2, a3), true;
- case 5: return listeners.fn.call(listeners.context, a1, a2, a3, a4), true;
- case 6: return listeners.fn.call(listeners.context, a1, a2, a3, a4, a5), true;
- }
-
- for (i = 1, args = new Array(len -1); i < len; i++) {
- args[i - 1] = arguments[i];
- }
-
- listeners.fn.apply(listeners.context, args);
- } else {
- var length = listeners.length
- , j;
-
- for (i = 0; i < length; i++) {
- if (listeners[i].once) this.removeListener(event, listeners[i].fn, undefined, true);
-
- switch (len) {
- case 1: listeners[i].fn.call(listeners[i].context); break;
- case 2: listeners[i].fn.call(listeners[i].context, a1); break;
- case 3: listeners[i].fn.call(listeners[i].context, a1, a2); break;
- case 4: listeners[i].fn.call(listeners[i].context, a1, a2, a3); break;
- default:
- if (!args) for (j = 1, args = new Array(len -1); j < len; j++) {
- args[j - 1] = arguments[j];
- }
-
- listeners[i].fn.apply(listeners[i].context, args);
- }
- }
- }
-
- return true;
-};
-
-/**
- * Add a listener for a given event.
- *
- * @param {(String|Symbol)} event The event name.
- * @param {Function} fn The listener function.
- * @param {*} [context=this] The context to invoke the listener with.
- * @returns {EventEmitter} `this`.
- * @public
- */
-EventEmitter.prototype.on = function on(event, fn, context) {
- return addListener(this, event, fn, context, false);
-};
-
-/**
- * Add a one-time listener for a given event.
- *
- * @param {(String|Symbol)} event The event name.
- * @param {Function} fn The listener function.
- * @param {*} [context=this] The context to invoke the listener with.
- * @returns {EventEmitter} `this`.
- * @public
- */
-EventEmitter.prototype.once = function once(event, fn, context) {
- return addListener(this, event, fn, context, true);
-};
-
-/**
- * Remove the listeners of a given event.
- *
- * @param {(String|Symbol)} event The event name.
- * @param {Function} fn Only remove the listeners that match this function.
- * @param {*} context Only remove the listeners that have this context.
- * @param {Boolean} once Only remove one-time listeners.
- * @returns {EventEmitter} `this`.
- * @public
- */
-EventEmitter.prototype.removeListener = function removeListener(event, fn, context, once) {
- var evt = prefix ? prefix + event : event;
-
- if (!this._events[evt]) return this;
- if (!fn) {
- clearEvent(this, evt);
- return this;
- }
-
- var listeners = this._events[evt];
-
- if (listeners.fn) {
- if (
- listeners.fn === fn &&
- (!once || listeners.once) &&
- (!context || listeners.context === context)
- ) {
- clearEvent(this, evt);
- }
- } else {
- for (var i = 0, events = [], length = listeners.length; i < length; i++) {
- if (
- listeners[i].fn !== fn ||
- (once && !listeners[i].once) ||
- (context && listeners[i].context !== context)
- ) {
- events.push(listeners[i]);
- }
- }
-
- //
- // Reset the array, or remove it completely if we have no more listeners.
- //
- if (events.length) this._events[evt] = events.length === 1 ? events[0] : events;
- else clearEvent(this, evt);
- }
-
- return this;
-};
-
-/**
- * Remove all listeners, or those of the specified event.
- *
- * @param {(String|Symbol)} [event] The event name.
- * @returns {EventEmitter} `this`.
- * @public
- */
-EventEmitter.prototype.removeAllListeners = function removeAllListeners(event) {
- var evt;
-
- if (event) {
- evt = prefix ? prefix + event : event;
- if (this._events[evt]) clearEvent(this, evt);
- } else {
- this._events = new Events();
- this._eventsCount = 0;
- }
-
- return this;
-};
-
-//
-// Alias methods names because people roll like that.
-//
-EventEmitter.prototype.off = EventEmitter.prototype.removeListener;
-EventEmitter.prototype.addListener = EventEmitter.prototype.on;
-
-//
-// Expose the prefix.
-//
-EventEmitter.prefixed = prefix;
-
-//
-// Allow `EventEmitter` to be imported as module namespace.
-//
-EventEmitter.EventEmitter = EventEmitter;
-
-//
-// Expose the module.
-//
-if ('undefined' !== typeof module) {
- module.exports = EventEmitter;
-}
-
-},{}],"WOs9":[function(require,module,exports) {
-"use strict";
-
-var __read = this && this.__read || function (o, n) {
- var m = typeof Symbol === "function" && o[Symbol.iterator];
- if (!m) return o;
- var i = m.call(o),
- r,
- ar = [],
- e;
-
- try {
- while ((n === void 0 || n-- > 0) && !(r = i.next()).done) {
- ar.push(r.value);
- }
- } catch (error) {
- e = {
- error: error
- };
- } finally {
- try {
- if (r && !r.done && (m = i["return"])) m.call(i);
- } finally {
- if (e) throw e.error;
- }
- }
-
- return ar;
-};
-
-var __spreadArray = this && this.__spreadArray || function (to, from) {
- for (var i = 0, il = from.length, j = to.length; i < il; i++, j++) {
- to[j] = from[i];
- }
-
- return to;
-};
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.LogLevel = void 0;
-var LOG_PREFIX = 'PeerJS: ';
-/*
-Prints log messages depending on the debug level passed in. Defaults to 0.
-0 Prints no logs.
-1 Prints only errors.
-2 Prints errors and warnings.
-3 Prints all logs.
-*/
-
-var LogLevel;
-
-(function (LogLevel) {
- LogLevel[LogLevel["Disabled"] = 0] = "Disabled";
- LogLevel[LogLevel["Errors"] = 1] = "Errors";
- LogLevel[LogLevel["Warnings"] = 2] = "Warnings";
- LogLevel[LogLevel["All"] = 3] = "All";
-})(LogLevel = exports.LogLevel || (exports.LogLevel = {}));
-
-var Logger =
-/** @class */
-function () {
- function Logger() {
- this._logLevel = LogLevel.Disabled;
- }
-
- Object.defineProperty(Logger.prototype, "logLevel", {
- get: function get() {
- return this._logLevel;
- },
- set: function set(logLevel) {
- this._logLevel = logLevel;
- },
- enumerable: false,
- configurable: true
- });
-
- Logger.prototype.log = function () {
- var args = [];
-
- for (var _i = 0; _i < arguments.length; _i++) {
- args[_i] = arguments[_i];
- }
-
- if (this._logLevel >= LogLevel.All) {
- this._print.apply(this, __spreadArray([LogLevel.All], __read(args)));
- }
- };
-
- Logger.prototype.warn = function () {
- var args = [];
-
- for (var _i = 0; _i < arguments.length; _i++) {
- args[_i] = arguments[_i];
- }
-
- if (this._logLevel >= LogLevel.Warnings) {
- this._print.apply(this, __spreadArray([LogLevel.Warnings], __read(args)));
- }
- };
-
- Logger.prototype.error = function () {
- var args = [];
-
- for (var _i = 0; _i < arguments.length; _i++) {
- args[_i] = arguments[_i];
- }
-
- if (this._logLevel >= LogLevel.Errors) {
- this._print.apply(this, __spreadArray([LogLevel.Errors], __read(args)));
- }
- };
-
- Logger.prototype.setLogFunction = function (fn) {
- this._print = fn;
- };
-
- Logger.prototype._print = function (logLevel) {
- var rest = [];
-
- for (var _i = 1; _i < arguments.length; _i++) {
- rest[_i - 1] = arguments[_i];
- }
-
- var copy = __spreadArray([LOG_PREFIX], __read(rest));
-
- for (var i in copy) {
- if (copy[i] instanceof Error) {
- copy[i] = "(" + copy[i].name + ") " + copy[i].message;
- }
- }
-
- if (logLevel >= LogLevel.All) {
- console.log.apply(console, __spreadArray([], __read(copy)));
- } else if (logLevel >= LogLevel.Warnings) {
- console.warn.apply(console, __spreadArray(["WARNING"], __read(copy)));
- } else if (logLevel >= LogLevel.Errors) {
- console.error.apply(console, __spreadArray(["ERROR"], __read(copy)));
- }
- };
-
- return Logger;
-}();
-
-exports.default = new Logger();
-},{}],"ZRYf":[function(require,module,exports) {
-"use strict";
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.ServerMessageType = exports.SocketEventType = exports.SerializationType = exports.PeerErrorType = exports.PeerEventType = exports.ConnectionType = exports.ConnectionEventType = void 0;
-var ConnectionEventType;
-
-(function (ConnectionEventType) {
- ConnectionEventType["Open"] = "open";
- ConnectionEventType["Stream"] = "stream";
- ConnectionEventType["Data"] = "data";
- ConnectionEventType["Close"] = "close";
- ConnectionEventType["Error"] = "error";
- ConnectionEventType["IceStateChanged"] = "iceStateChanged";
-})(ConnectionEventType = exports.ConnectionEventType || (exports.ConnectionEventType = {}));
-
-var ConnectionType;
-
-(function (ConnectionType) {
- ConnectionType["Data"] = "data";
- ConnectionType["Media"] = "media";
-})(ConnectionType = exports.ConnectionType || (exports.ConnectionType = {}));
-
-var PeerEventType;
-
-(function (PeerEventType) {
- PeerEventType["Open"] = "open";
- PeerEventType["Close"] = "close";
- PeerEventType["Connection"] = "connection";
- PeerEventType["Call"] = "call";
- PeerEventType["Disconnected"] = "disconnected";
- PeerEventType["Error"] = "error";
-})(PeerEventType = exports.PeerEventType || (exports.PeerEventType = {}));
-
-var PeerErrorType;
-
-(function (PeerErrorType) {
- PeerErrorType["BrowserIncompatible"] = "browser-incompatible";
- PeerErrorType["Disconnected"] = "disconnected";
- PeerErrorType["InvalidID"] = "invalid-id";
- PeerErrorType["InvalidKey"] = "invalid-key";
- PeerErrorType["Network"] = "network";
- PeerErrorType["PeerUnavailable"] = "peer-unavailable";
- PeerErrorType["SslUnavailable"] = "ssl-unavailable";
- PeerErrorType["ServerError"] = "server-error";
- PeerErrorType["SocketError"] = "socket-error";
- PeerErrorType["SocketClosed"] = "socket-closed";
- PeerErrorType["UnavailableID"] = "unavailable-id";
- PeerErrorType["WebRTC"] = "webrtc";
-})(PeerErrorType = exports.PeerErrorType || (exports.PeerErrorType = {}));
-
-var SerializationType;
-
-(function (SerializationType) {
- SerializationType["Binary"] = "binary";
- SerializationType["BinaryUTF8"] = "binary-utf8";
- SerializationType["JSON"] = "json";
-})(SerializationType = exports.SerializationType || (exports.SerializationType = {}));
-
-var SocketEventType;
-
-(function (SocketEventType) {
- SocketEventType["Message"] = "message";
- SocketEventType["Disconnected"] = "disconnected";
- SocketEventType["Error"] = "error";
- SocketEventType["Close"] = "close";
-})(SocketEventType = exports.SocketEventType || (exports.SocketEventType = {}));
-
-var ServerMessageType;
-
-(function (ServerMessageType) {
- ServerMessageType["Heartbeat"] = "HEARTBEAT";
- ServerMessageType["Candidate"] = "CANDIDATE";
- ServerMessageType["Offer"] = "OFFER";
- ServerMessageType["Answer"] = "ANSWER";
- ServerMessageType["Open"] = "OPEN";
- ServerMessageType["Error"] = "ERROR";
- ServerMessageType["IdTaken"] = "ID-TAKEN";
- ServerMessageType["InvalidKey"] = "INVALID-KEY";
- ServerMessageType["Leave"] = "LEAVE";
- ServerMessageType["Expire"] = "EXPIRE"; // The offer sent to a peer has expired without response.
-})(ServerMessageType = exports.ServerMessageType || (exports.ServerMessageType = {}));
-},{}],"wJlv":[function(require,module,exports) {
-"use strict";
-
-var __extends = this && this.__extends || function () {
- var _extendStatics = function extendStatics(d, b) {
- _extendStatics = Object.setPrototypeOf || {
- __proto__: []
- } instanceof Array && function (d, b) {
- d.__proto__ = b;
- } || function (d, b) {
- for (var p in b) {
- if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p];
- }
- };
-
- return _extendStatics(d, b);
- };
-
- return function (d, b) {
- if (typeof b !== "function" && b !== null) throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
-
- _extendStatics(d, b);
-
- function __() {
- this.constructor = d;
- }
-
- d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
- };
-}();
-
-var __read = this && this.__read || function (o, n) {
- var m = typeof Symbol === "function" && o[Symbol.iterator];
- if (!m) return o;
- var i = m.call(o),
- r,
- ar = [],
- e;
-
- try {
- while ((n === void 0 || n-- > 0) && !(r = i.next()).done) {
- ar.push(r.value);
- }
- } catch (error) {
- e = {
- error: error
- };
- } finally {
- try {
- if (r && !r.done && (m = i["return"])) m.call(i);
- } finally {
- if (e) throw e.error;
- }
- }
-
- return ar;
-};
-
-var __spreadArray = this && this.__spreadArray || function (to, from) {
- for (var i = 0, il = from.length, j = to.length; i < il; i++, j++) {
- to[j] = from[i];
- }
-
- return to;
-};
-
-var __values = this && this.__values || function (o) {
- var s = typeof Symbol === "function" && Symbol.iterator,
- m = s && o[s],
- i = 0;
- if (m) return m.call(o);
- if (o && typeof o.length === "number") return {
- next: function next() {
- if (o && i >= o.length) o = void 0;
- return {
- value: o && o[i++],
- done: !o
- };
- }
- };
- throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
-};
-
-var __importDefault = this && this.__importDefault || function (mod) {
- return mod && mod.__esModule ? mod : {
- "default": mod
- };
-};
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.Socket = void 0;
-
-var eventemitter3_1 = require("eventemitter3");
-
-var logger_1 = __importDefault(require("./logger"));
-
-var enums_1 = require("./enums");
-/**
- * An abstraction on top of WebSockets to provide fastest
- * possible connection for peers.
- */
-
-
-var Socket =
-/** @class */
-function (_super) {
- __extends(Socket, _super);
-
- function Socket(secure, host, port, path, key, pingInterval) {
- if (pingInterval === void 0) {
- pingInterval = 5000;
- }
-
- var _this = _super.call(this) || this;
-
- _this.pingInterval = pingInterval;
- _this._disconnected = true;
- _this._messagesQueue = [];
- var wsProtocol = secure ? "wss://" : "ws://";
- _this._baseUrl = wsProtocol + host + ":" + port + path + "peerjs?key=" + key;
- return _this;
- }
-
- Socket.prototype.start = function (id, token) {
- var _this = this;
-
- this._id = id;
- var wsUrl = this._baseUrl + "&id=" + id + "&token=" + token;
-
- if (!!this._socket || !this._disconnected) {
- return;
- }
-
- this._socket = new WebSocket(wsUrl);
- this._disconnected = false;
-
- this._socket.onmessage = function (event) {
- var data;
-
- try {
- data = JSON.parse(event.data);
- logger_1.default.log("Server message received:", data);
- } catch (e) {
- logger_1.default.log("Invalid server message", event.data);
- return;
- }
-
- _this.emit(enums_1.SocketEventType.Message, data);
- };
-
- this._socket.onclose = function (event) {
- if (_this._disconnected) {
- return;
- }
-
- logger_1.default.log("Socket closed.", event);
-
- _this._cleanup();
-
- _this._disconnected = true;
-
- _this.emit(enums_1.SocketEventType.Disconnected);
- }; // Take care of the queue of connections if necessary and make sure Peer knows
- // socket is open.
-
-
- this._socket.onopen = function () {
- if (_this._disconnected) {
- return;
- }
-
- _this._sendQueuedMessages();
-
- logger_1.default.log("Socket open");
-
- _this._scheduleHeartbeat();
- };
- };
-
- Socket.prototype._scheduleHeartbeat = function () {
- var _this = this;
-
- this._wsPingTimer = setTimeout(function () {
- _this._sendHeartbeat();
- }, this.pingInterval);
- };
-
- Socket.prototype._sendHeartbeat = function () {
- if (!this._wsOpen()) {
- logger_1.default.log("Cannot send heartbeat, because socket closed");
- return;
- }
-
- var message = JSON.stringify({
- type: enums_1.ServerMessageType.Heartbeat
- });
-
- this._socket.send(message);
-
- this._scheduleHeartbeat();
- };
- /** Is the websocket currently open? */
-
-
- Socket.prototype._wsOpen = function () {
- return !!this._socket && this._socket.readyState === 1;
- };
- /** Send queued messages. */
-
-
- Socket.prototype._sendQueuedMessages = function () {
- var e_1, _a; //Create copy of queue and clear it,
- //because send method push the message back to queue if smth will go wrong
-
-
- var copiedQueue = __spreadArray([], __read(this._messagesQueue));
-
- this._messagesQueue = [];
-
- try {
- for (var copiedQueue_1 = __values(copiedQueue), copiedQueue_1_1 = copiedQueue_1.next(); !copiedQueue_1_1.done; copiedQueue_1_1 = copiedQueue_1.next()) {
- var message = copiedQueue_1_1.value;
- this.send(message);
- }
- } catch (e_1_1) {
- e_1 = {
- error: e_1_1
- };
- } finally {
- try {
- if (copiedQueue_1_1 && !copiedQueue_1_1.done && (_a = copiedQueue_1.return)) _a.call(copiedQueue_1);
- } finally {
- if (e_1) throw e_1.error;
- }
- }
- };
- /** Exposed send for DC & Peer. */
-
-
- Socket.prototype.send = function (data) {
- if (this._disconnected) {
- return;
- } // If we didn't get an ID yet, we can't yet send anything so we should queue
- // up these messages.
-
-
- if (!this._id) {
- this._messagesQueue.push(data);
-
- return;
- }
-
- if (!data.type) {
- this.emit(enums_1.SocketEventType.Error, "Invalid message");
- return;
- }
-
- if (!this._wsOpen()) {
- return;
- }
-
- var message = JSON.stringify(data);
-
- this._socket.send(message);
- };
-
- Socket.prototype.close = function () {
- if (this._disconnected) {
- return;
- }
-
- this._cleanup();
-
- this._disconnected = true;
- };
-
- Socket.prototype._cleanup = function () {
- if (this._socket) {
- this._socket.onopen = this._socket.onmessage = this._socket.onclose = null;
-
- this._socket.close();
-
- this._socket = undefined;
- }
-
- clearTimeout(this._wsPingTimer);
- };
-
- return Socket;
-}(eventemitter3_1.EventEmitter);
-
-exports.Socket = Socket;
-},{"eventemitter3":"JJlS","./logger":"WOs9","./enums":"ZRYf"}],"HCdX":[function(require,module,exports) {
-"use strict";
-
-var __assign = this && this.__assign || function () {
- __assign = Object.assign || function (t) {
- for (var s, i = 1, n = arguments.length; i < n; i++) {
- s = arguments[i];
-
- for (var p in s) {
- if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];
- }
- }
-
- return t;
- };
-
- return __assign.apply(this, arguments);
-};
-
-var __awaiter = this && this.__awaiter || function (thisArg, _arguments, P, generator) {
- function adopt(value) {
- return value instanceof P ? value : new P(function (resolve) {
- resolve(value);
- });
- }
-
- return new (P || (P = Promise))(function (resolve, reject) {
- function fulfilled(value) {
- try {
- step(generator.next(value));
- } catch (e) {
- reject(e);
- }
- }
-
- function rejected(value) {
- try {
- step(generator["throw"](value));
- } catch (e) {
- reject(e);
- }
- }
-
- function step(result) {
- result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected);
- }
-
- step((generator = generator.apply(thisArg, _arguments || [])).next());
- });
-};
-
-var __generator = this && this.__generator || function (thisArg, body) {
- var _ = {
- label: 0,
- sent: function sent() {
- if (t[0] & 1) throw t[1];
- return t[1];
- },
- trys: [],
- ops: []
- },
- f,
- y,
- t,
- g;
- return g = {
- next: verb(0),
- "throw": verb(1),
- "return": verb(2)
- }, typeof Symbol === "function" && (g[Symbol.iterator] = function () {
- return this;
- }), g;
-
- function verb(n) {
- return function (v) {
- return step([n, v]);
- };
- }
-
- function step(op) {
- if (f) throw new TypeError("Generator is already executing.");
-
- while (_) {
- try {
- if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
- if (y = 0, t) op = [op[0] & 2, t.value];
-
- switch (op[0]) {
- case 0:
- case 1:
- t = op;
- break;
-
- case 4:
- _.label++;
- return {
- value: op[1],
- done: false
- };
-
- case 5:
- _.label++;
- y = op[1];
- op = [0];
- continue;
-
- case 7:
- op = _.ops.pop();
-
- _.trys.pop();
-
- continue;
-
- default:
- if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) {
- _ = 0;
- continue;
- }
-
- if (op[0] === 3 && (!t || op[1] > t[0] && op[1] < t[3])) {
- _.label = op[1];
- break;
- }
-
- if (op[0] === 6 && _.label < t[1]) {
- _.label = t[1];
- t = op;
- break;
- }
-
- if (t && _.label < t[2]) {
- _.label = t[2];
-
- _.ops.push(op);
-
- break;
- }
-
- if (t[2]) _.ops.pop();
-
- _.trys.pop();
-
- continue;
- }
-
- op = body.call(thisArg, _);
- } catch (e) {
- op = [6, e];
- y = 0;
- } finally {
- f = t = 0;
- }
- }
-
- if (op[0] & 5) throw op[1];
- return {
- value: op[0] ? op[1] : void 0,
- done: true
- };
- }
-};
-
-var __importDefault = this && this.__importDefault || function (mod) {
- return mod && mod.__esModule ? mod : {
- "default": mod
- };
-};
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.Negotiator = void 0;
-
-var util_1 = require("./util");
-
-var logger_1 = __importDefault(require("./logger"));
-
-var enums_1 = require("./enums");
-/**
- * Manages all negotiations between Peers.
- */
-
-
-var Negotiator =
-/** @class */
-function () {
- function Negotiator(connection) {
- this.connection = connection;
- }
- /** Returns a PeerConnection object set up correctly (for data, media). */
-
-
- Negotiator.prototype.startConnection = function (options) {
- var peerConnection = this._startPeerConnection(); // Set the connection's PC.
-
-
- this.connection.peerConnection = peerConnection;
-
- if (this.connection.type === enums_1.ConnectionType.Media && options._stream) {
- this._addTracksToConnection(options._stream, peerConnection);
- } // What do we need to do now?
-
-
- if (options.originator) {
- if (this.connection.type === enums_1.ConnectionType.Data) {
- var dataConnection = this.connection;
- var config = {
- ordered: !!options.reliable
- };
- var dataChannel = peerConnection.createDataChannel(dataConnection.label, config);
- dataConnection.initialize(dataChannel);
- }
-
- this._makeOffer();
- } else {
- this.handleSDP("OFFER", options.sdp);
- }
- };
- /** Start a PC. */
-
-
- Negotiator.prototype._startPeerConnection = function () {
- logger_1.default.log("Creating RTCPeerConnection.");
- var peerConnection = new RTCPeerConnection(this.connection.provider.options.config);
-
- this._setupListeners(peerConnection);
-
- return peerConnection;
- };
- /** Set up various WebRTC listeners. */
-
-
- Negotiator.prototype._setupListeners = function (peerConnection) {
- var _this = this;
-
- var peerId = this.connection.peer;
- var connectionId = this.connection.connectionId;
- var connectionType = this.connection.type;
- var provider = this.connection.provider; // ICE CANDIDATES.
-
- logger_1.default.log("Listening for ICE candidates.");
-
- peerConnection.onicecandidate = function (evt) {
- if (!evt.candidate || !evt.candidate.candidate) return;
- logger_1.default.log("Received ICE candidates for " + peerId + ":", evt.candidate);
- provider.socket.send({
- type: enums_1.ServerMessageType.Candidate,
- payload: {
- candidate: evt.candidate,
- type: connectionType,
- connectionId: connectionId
- },
- dst: peerId
- });
- };
-
- peerConnection.oniceconnectionstatechange = function () {
- switch (peerConnection.iceConnectionState) {
- case "failed":
- logger_1.default.log("iceConnectionState is failed, closing connections to " + peerId);
-
- _this.connection.emit(enums_1.ConnectionEventType.Error, new Error("Negotiation of connection to " + peerId + " failed."));
-
- _this.connection.close();
-
- break;
-
- case "closed":
- logger_1.default.log("iceConnectionState is closed, closing connections to " + peerId);
-
- _this.connection.emit(enums_1.ConnectionEventType.Error, new Error("Connection to " + peerId + " closed."));
-
- _this.connection.close();
-
- break;
-
- case "disconnected":
- logger_1.default.log("iceConnectionState changed to disconnected on the connection with " + peerId);
- break;
-
- case "completed":
- peerConnection.onicecandidate = util_1.util.noop;
- break;
- }
-
- _this.connection.emit(enums_1.ConnectionEventType.IceStateChanged, peerConnection.iceConnectionState);
- }; // DATACONNECTION.
-
-
- logger_1.default.log("Listening for data channel"); // Fired between offer and answer, so options should already be saved
- // in the options hash.
-
- peerConnection.ondatachannel = function (evt) {
- logger_1.default.log("Received data channel");
- var dataChannel = evt.channel;
- var connection = provider.getConnection(peerId, connectionId);
- connection.initialize(dataChannel);
- }; // MEDIACONNECTION.
-
-
- logger_1.default.log("Listening for remote stream");
-
- peerConnection.ontrack = function (evt) {
- logger_1.default.log("Received remote stream");
- var stream = evt.streams[0];
- var connection = provider.getConnection(peerId, connectionId);
-
- if (connection.type === enums_1.ConnectionType.Media) {
- var mediaConnection = connection;
-
- _this._addStreamToMediaConnection(stream, mediaConnection);
- }
- };
- };
-
- Negotiator.prototype.cleanup = function () {
- logger_1.default.log("Cleaning up PeerConnection to " + this.connection.peer);
- var peerConnection = this.connection.peerConnection;
-
- if (!peerConnection) {
- return;
- }
-
- this.connection.peerConnection = null; //unsubscribe from all PeerConnection's events
-
- peerConnection.onicecandidate = peerConnection.oniceconnectionstatechange = peerConnection.ondatachannel = peerConnection.ontrack = function () {};
-
- var peerConnectionNotClosed = peerConnection.signalingState !== "closed";
- var dataChannelNotClosed = false;
-
- if (this.connection.type === enums_1.ConnectionType.Data) {
- var dataConnection = this.connection;
- var dataChannel = dataConnection.dataChannel;
-
- if (dataChannel) {
- dataChannelNotClosed = !!dataChannel.readyState && dataChannel.readyState !== "closed";
- }
- }
-
- if (peerConnectionNotClosed || dataChannelNotClosed) {
- peerConnection.close();
- }
- };
-
- Negotiator.prototype._makeOffer = function () {
- return __awaiter(this, void 0, Promise, function () {
- var peerConnection, provider, offer, payload, dataConnection, err_2, err_1_1;
- return __generator(this, function (_a) {
- switch (_a.label) {
- case 0:
- peerConnection = this.connection.peerConnection;
- provider = this.connection.provider;
- _a.label = 1;
-
- case 1:
- _a.trys.push([1, 7,, 8]);
-
- return [4
- /*yield*/
- , peerConnection.createOffer(this.connection.options.constraints)];
-
- case 2:
- offer = _a.sent();
- logger_1.default.log("Created offer.");
-
- if (this.connection.options.sdpTransform && typeof this.connection.options.sdpTransform === 'function') {
- offer.sdp = this.connection.options.sdpTransform(offer.sdp) || offer.sdp;
- }
-
- _a.label = 3;
-
- case 3:
- _a.trys.push([3, 5,, 6]);
-
- return [4
- /*yield*/
- , peerConnection.setLocalDescription(offer)];
-
- case 4:
- _a.sent();
-
- logger_1.default.log("Set localDescription:", offer, "for:" + this.connection.peer);
- payload = {
- sdp: offer,
- type: this.connection.type,
- connectionId: this.connection.connectionId,
- metadata: this.connection.metadata,
- browser: util_1.util.browser
- };
-
- if (this.connection.type === enums_1.ConnectionType.Data) {
- dataConnection = this.connection;
- payload = __assign(__assign({}, payload), {
- label: dataConnection.label,
- reliable: dataConnection.reliable,
- serialization: dataConnection.serialization
- });
- }
-
- provider.socket.send({
- type: enums_1.ServerMessageType.Offer,
- payload: payload,
- dst: this.connection.peer
- });
- return [3
- /*break*/
- , 6];
-
- case 5:
- err_2 = _a.sent(); // TODO: investigate why _makeOffer is being called from the answer
-
- if (err_2 != "OperationError: Failed to set local offer sdp: Called in wrong state: kHaveRemoteOffer") {
- provider.emitError(enums_1.PeerErrorType.WebRTC, err_2);
- logger_1.default.log("Failed to setLocalDescription, ", err_2);
- }
-
- return [3
- /*break*/
- , 6];
-
- case 6:
- return [3
- /*break*/
- , 8];
-
- case 7:
- err_1_1 = _a.sent();
- provider.emitError(enums_1.PeerErrorType.WebRTC, err_1_1);
- logger_1.default.log("Failed to createOffer, ", err_1_1);
- return [3
- /*break*/
- , 8];
-
- case 8:
- return [2
- /*return*/
- ];
- }
- });
- });
- };
-
- Negotiator.prototype._makeAnswer = function () {
- return __awaiter(this, void 0, Promise, function () {
- var peerConnection, provider, answer, err_3, err_1_2;
- return __generator(this, function (_a) {
- switch (_a.label) {
- case 0:
- peerConnection = this.connection.peerConnection;
- provider = this.connection.provider;
- _a.label = 1;
-
- case 1:
- _a.trys.push([1, 7,, 8]);
-
- return [4
- /*yield*/
- , peerConnection.createAnswer()];
-
- case 2:
- answer = _a.sent();
- logger_1.default.log("Created answer.");
-
- if (this.connection.options.sdpTransform && typeof this.connection.options.sdpTransform === 'function') {
- answer.sdp = this.connection.options.sdpTransform(answer.sdp) || answer.sdp;
- }
-
- _a.label = 3;
-
- case 3:
- _a.trys.push([3, 5,, 6]);
-
- return [4
- /*yield*/
- , peerConnection.setLocalDescription(answer)];
-
- case 4:
- _a.sent();
-
- logger_1.default.log("Set localDescription:", answer, "for:" + this.connection.peer);
- provider.socket.send({
- type: enums_1.ServerMessageType.Answer,
- payload: {
- sdp: answer,
- type: this.connection.type,
- connectionId: this.connection.connectionId,
- browser: util_1.util.browser
- },
- dst: this.connection.peer
- });
- return [3
- /*break*/
- , 6];
-
- case 5:
- err_3 = _a.sent();
- provider.emitError(enums_1.PeerErrorType.WebRTC, err_3);
- logger_1.default.log("Failed to setLocalDescription, ", err_3);
- return [3
- /*break*/
- , 6];
-
- case 6:
- return [3
- /*break*/
- , 8];
-
- case 7:
- err_1_2 = _a.sent();
- provider.emitError(enums_1.PeerErrorType.WebRTC, err_1_2);
- logger_1.default.log("Failed to create answer, ", err_1_2);
- return [3
- /*break*/
- , 8];
-
- case 8:
- return [2
- /*return*/
- ];
- }
- });
- });
- };
- /** Handle an SDP. */
-
-
- Negotiator.prototype.handleSDP = function (type, sdp) {
- return __awaiter(this, void 0, Promise, function () {
- var peerConnection, provider, self, err_4;
- return __generator(this, function (_a) {
- switch (_a.label) {
- case 0:
- sdp = new RTCSessionDescription(sdp);
- peerConnection = this.connection.peerConnection;
- provider = this.connection.provider;
- logger_1.default.log("Setting remote description", sdp);
- self = this;
- _a.label = 1;
-
- case 1:
- _a.trys.push([1, 5,, 6]);
-
- return [4
- /*yield*/
- , peerConnection.setRemoteDescription(sdp)];
-
- case 2:
- _a.sent();
-
- logger_1.default.log("Set remoteDescription:" + type + " for:" + this.connection.peer);
- if (!(type === "OFFER")) return [3
- /*break*/
- , 4];
- return [4
- /*yield*/
- , self._makeAnswer()];
-
- case 3:
- _a.sent();
-
- _a.label = 4;
-
- case 4:
- return [3
- /*break*/
- , 6];
-
- case 5:
- err_4 = _a.sent();
- provider.emitError(enums_1.PeerErrorType.WebRTC, err_4);
- logger_1.default.log("Failed to setRemoteDescription, ", err_4);
- return [3
- /*break*/
- , 6];
-
- case 6:
- return [2
- /*return*/
- ];
- }
- });
- });
- };
- /** Handle a candidate. */
-
-
- Negotiator.prototype.handleCandidate = function (ice) {
- return __awaiter(this, void 0, Promise, function () {
- var candidate, sdpMLineIndex, sdpMid, peerConnection, provider, err_5;
- return __generator(this, function (_a) {
- switch (_a.label) {
- case 0:
- logger_1.default.log("handleCandidate:", ice);
- candidate = ice.candidate;
- sdpMLineIndex = ice.sdpMLineIndex;
- sdpMid = ice.sdpMid;
- peerConnection = this.connection.peerConnection;
- provider = this.connection.provider;
- _a.label = 1;
-
- case 1:
- _a.trys.push([1, 3,, 4]);
-
- return [4
- /*yield*/
- , peerConnection.addIceCandidate(new RTCIceCandidate({
- sdpMid: sdpMid,
- sdpMLineIndex: sdpMLineIndex,
- candidate: candidate
- }))];
-
- case 2:
- _a.sent();
-
- logger_1.default.log("Added ICE candidate for:" + this.connection.peer);
- return [3
- /*break*/
- , 4];
-
- case 3:
- err_5 = _a.sent();
- provider.emitError(enums_1.PeerErrorType.WebRTC, err_5);
- logger_1.default.log("Failed to handleCandidate, ", err_5);
- return [3
- /*break*/
- , 4];
-
- case 4:
- return [2
- /*return*/
- ];
- }
- });
- });
- };
-
- Negotiator.prototype._addTracksToConnection = function (stream, peerConnection) {
- logger_1.default.log("add tracks from stream " + stream.id + " to peer connection");
-
- if (!peerConnection.addTrack) {
- return logger_1.default.error("Your browser does't support RTCPeerConnection#addTrack. Ignored.");
- }
-
- stream.getTracks().forEach(function (track) {
- peerConnection.addTrack(track, stream);
- });
- };
-
- Negotiator.prototype._addStreamToMediaConnection = function (stream, mediaConnection) {
- logger_1.default.log("add stream " + stream.id + " to media connection " + mediaConnection.connectionId);
- mediaConnection.addStream(stream);
- };
-
- return Negotiator;
-}();
-
-exports.Negotiator = Negotiator;
-},{"./util":"BHXf","./logger":"WOs9","./enums":"ZRYf"}],"tQFK":[function(require,module,exports) {
-"use strict";
-
-var __extends = this && this.__extends || function () {
- var _extendStatics = function extendStatics(d, b) {
- _extendStatics = Object.setPrototypeOf || {
- __proto__: []
- } instanceof Array && function (d, b) {
- d.__proto__ = b;
- } || function (d, b) {
- for (var p in b) {
- if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p];
- }
- };
-
- return _extendStatics(d, b);
- };
-
- return function (d, b) {
- if (typeof b !== "function" && b !== null) throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
-
- _extendStatics(d, b);
-
- function __() {
- this.constructor = d;
- }
-
- d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
- };
-}();
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.BaseConnection = void 0;
-
-var eventemitter3_1 = require("eventemitter3");
-
-var BaseConnection =
-/** @class */
-function (_super) {
- __extends(BaseConnection, _super);
-
- function BaseConnection(peer, provider, options) {
- var _this = _super.call(this) || this;
-
- _this.peer = peer;
- _this.provider = provider;
- _this.options = options;
- _this._open = false;
- _this.metadata = options.metadata;
- return _this;
- }
-
- Object.defineProperty(BaseConnection.prototype, "open", {
- get: function get() {
- return this._open;
- },
- enumerable: false,
- configurable: true
- });
- return BaseConnection;
-}(eventemitter3_1.EventEmitter);
-
-exports.BaseConnection = BaseConnection;
-},{"eventemitter3":"JJlS"}],"dbHP":[function(require,module,exports) {
-"use strict";
-
-var __extends = this && this.__extends || function () {
- var _extendStatics = function extendStatics(d, b) {
- _extendStatics = Object.setPrototypeOf || {
- __proto__: []
- } instanceof Array && function (d, b) {
- d.__proto__ = b;
- } || function (d, b) {
- for (var p in b) {
- if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p];
- }
- };
-
- return _extendStatics(d, b);
- };
-
- return function (d, b) {
- if (typeof b !== "function" && b !== null) throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
-
- _extendStatics(d, b);
-
- function __() {
- this.constructor = d;
- }
-
- d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
- };
-}();
-
-var __assign = this && this.__assign || function () {
- __assign = Object.assign || function (t) {
- for (var s, i = 1, n = arguments.length; i < n; i++) {
- s = arguments[i];
-
- for (var p in s) {
- if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];
- }
- }
-
- return t;
- };
-
- return __assign.apply(this, arguments);
-};
-
-var __values = this && this.__values || function (o) {
- var s = typeof Symbol === "function" && Symbol.iterator,
- m = s && o[s],
- i = 0;
- if (m) return m.call(o);
- if (o && typeof o.length === "number") return {
- next: function next() {
- if (o && i >= o.length) o = void 0;
- return {
- value: o && o[i++],
- done: !o
- };
- }
- };
- throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
-};
-
-var __importDefault = this && this.__importDefault || function (mod) {
- return mod && mod.__esModule ? mod : {
- "default": mod
- };
-};
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.MediaConnection = void 0;
-
-var util_1 = require("./util");
-
-var logger_1 = __importDefault(require("./logger"));
-
-var negotiator_1 = require("./negotiator");
-
-var enums_1 = require("./enums");
-
-var baseconnection_1 = require("./baseconnection");
-/**
- * Wraps the streaming interface between two Peers.
- */
-
-
-var MediaConnection =
-/** @class */
-function (_super) {
- __extends(MediaConnection, _super);
-
- function MediaConnection(peerId, provider, options) {
- var _this = _super.call(this, peerId, provider, options) || this;
-
- _this._localStream = _this.options._stream;
- _this.connectionId = _this.options.connectionId || MediaConnection.ID_PREFIX + util_1.util.randomToken();
- _this._negotiator = new negotiator_1.Negotiator(_this);
-
- if (_this._localStream) {
- _this._negotiator.startConnection({
- _stream: _this._localStream,
- originator: true
- });
- }
-
- return _this;
- }
-
- Object.defineProperty(MediaConnection.prototype, "type", {
- get: function get() {
- return enums_1.ConnectionType.Media;
- },
- enumerable: false,
- configurable: true
- });
- Object.defineProperty(MediaConnection.prototype, "localStream", {
- get: function get() {
- return this._localStream;
- },
- enumerable: false,
- configurable: true
- });
- Object.defineProperty(MediaConnection.prototype, "remoteStream", {
- get: function get() {
- return this._remoteStream;
- },
- enumerable: false,
- configurable: true
- });
-
- MediaConnection.prototype.addStream = function (remoteStream) {
- logger_1.default.log("Receiving stream", remoteStream);
- this._remoteStream = remoteStream;
-
- _super.prototype.emit.call(this, enums_1.ConnectionEventType.Stream, remoteStream); // Should we call this `open`?
-
- };
-
- MediaConnection.prototype.handleMessage = function (message) {
- var type = message.type;
- var payload = message.payload;
-
- switch (message.type) {
- case enums_1.ServerMessageType.Answer:
- // Forward to negotiator
- this._negotiator.handleSDP(type, payload.sdp);
-
- this._open = true;
- break;
-
- case enums_1.ServerMessageType.Candidate:
- this._negotiator.handleCandidate(payload.candidate);
-
- break;
-
- default:
- logger_1.default.warn("Unrecognized message type:" + type + " from peer:" + this.peer);
- break;
- }
- };
-
- MediaConnection.prototype.answer = function (stream, options) {
- var e_1, _a;
-
- if (options === void 0) {
- options = {};
- }
-
- if (this._localStream) {
- logger_1.default.warn("Local stream already exists on this MediaConnection. Are you answering a call twice?");
- return;
- }
-
- this._localStream = stream;
-
- if (options && options.sdpTransform) {
- this.options.sdpTransform = options.sdpTransform;
- }
-
- this._negotiator.startConnection(__assign(__assign({}, this.options._payload), {
- _stream: stream
- })); // Retrieve lost messages stored because PeerConnection not set up.
-
-
- var messages = this.provider._getMessages(this.connectionId);
-
- try {
- for (var messages_1 = __values(messages), messages_1_1 = messages_1.next(); !messages_1_1.done; messages_1_1 = messages_1.next()) {
- var message = messages_1_1.value;
- this.handleMessage(message);
- }
- } catch (e_1_1) {
- e_1 = {
- error: e_1_1
- };
- } finally {
- try {
- if (messages_1_1 && !messages_1_1.done && (_a = messages_1.return)) _a.call(messages_1);
- } finally {
- if (e_1) throw e_1.error;
- }
- }
-
- this._open = true;
- };
- /**
- * Exposed functionality for users.
- */
-
- /** Allows user to close connection. */
-
-
- MediaConnection.prototype.close = function () {
- if (this._negotiator) {
- this._negotiator.cleanup();
-
- this._negotiator = null;
- }
-
- this._localStream = null;
- this._remoteStream = null;
-
- if (this.provider) {
- this.provider._removeConnection(this);
-
- this.provider = null;
- }
-
- if (this.options && this.options._stream) {
- this.options._stream = null;
- }
-
- if (!this.open) {
- return;
- }
-
- this._open = false;
-
- _super.prototype.emit.call(this, enums_1.ConnectionEventType.Close);
- };
-
- MediaConnection.ID_PREFIX = "mc_";
- return MediaConnection;
-}(baseconnection_1.BaseConnection);
-
-exports.MediaConnection = MediaConnection;
-},{"./util":"BHXf","./logger":"WOs9","./negotiator":"HCdX","./enums":"ZRYf","./baseconnection":"tQFK"}],"GGp6":[function(require,module,exports) {
-"use strict";
-
-var __extends = this && this.__extends || function () {
- var _extendStatics = function extendStatics(d, b) {
- _extendStatics = Object.setPrototypeOf || {
- __proto__: []
- } instanceof Array && function (d, b) {
- d.__proto__ = b;
- } || function (d, b) {
- for (var p in b) {
- if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p];
- }
- };
-
- return _extendStatics(d, b);
- };
-
- return function (d, b) {
- if (typeof b !== "function" && b !== null) throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
-
- _extendStatics(d, b);
-
- function __() {
- this.constructor = d;
- }
-
- d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
- };
-}();
-
-var __importDefault = this && this.__importDefault || function (mod) {
- return mod && mod.__esModule ? mod : {
- "default": mod
- };
-};
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.EncodingQueue = void 0;
-
-var eventemitter3_1 = require("eventemitter3");
-
-var logger_1 = __importDefault(require("./logger"));
-
-var EncodingQueue =
-/** @class */
-function (_super) {
- __extends(EncodingQueue, _super);
-
- function EncodingQueue() {
- var _this = _super.call(this) || this;
-
- _this.fileReader = new FileReader();
- _this._queue = [];
- _this._processing = false;
-
- _this.fileReader.onload = function (evt) {
- _this._processing = false;
-
- if (evt.target) {
- _this.emit('done', evt.target.result);
- }
-
- _this.doNextTask();
- };
-
- _this.fileReader.onerror = function (evt) {
- logger_1.default.error("EncodingQueue error:", evt);
- _this._processing = false;
-
- _this.destroy();
-
- _this.emit('error', evt);
- };
-
- return _this;
- }
-
- Object.defineProperty(EncodingQueue.prototype, "queue", {
- get: function get() {
- return this._queue;
- },
- enumerable: false,
- configurable: true
- });
- Object.defineProperty(EncodingQueue.prototype, "size", {
- get: function get() {
- return this.queue.length;
- },
- enumerable: false,
- configurable: true
- });
- Object.defineProperty(EncodingQueue.prototype, "processing", {
- get: function get() {
- return this._processing;
- },
- enumerable: false,
- configurable: true
- });
-
- EncodingQueue.prototype.enque = function (blob) {
- this.queue.push(blob);
- if (this.processing) return;
- this.doNextTask();
- };
-
- EncodingQueue.prototype.destroy = function () {
- this.fileReader.abort();
- this._queue = [];
- };
-
- EncodingQueue.prototype.doNextTask = function () {
- if (this.size === 0) return;
- if (this.processing) return;
- this._processing = true;
- this.fileReader.readAsArrayBuffer(this.queue.shift());
- };
-
- return EncodingQueue;
-}(eventemitter3_1.EventEmitter);
-
-exports.EncodingQueue = EncodingQueue;
-},{"eventemitter3":"JJlS","./logger":"WOs9"}],"GBTQ":[function(require,module,exports) {
-"use strict";
-
-var __extends = this && this.__extends || function () {
- var _extendStatics = function extendStatics(d, b) {
- _extendStatics = Object.setPrototypeOf || {
- __proto__: []
- } instanceof Array && function (d, b) {
- d.__proto__ = b;
- } || function (d, b) {
- for (var p in b) {
- if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p];
- }
- };
-
- return _extendStatics(d, b);
- };
-
- return function (d, b) {
- if (typeof b !== "function" && b !== null) throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
-
- _extendStatics(d, b);
-
- function __() {
- this.constructor = d;
- }
-
- d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
- };
-}();
-
-var __values = this && this.__values || function (o) {
- var s = typeof Symbol === "function" && Symbol.iterator,
- m = s && o[s],
- i = 0;
- if (m) return m.call(o);
- if (o && typeof o.length === "number") return {
- next: function next() {
- if (o && i >= o.length) o = void 0;
- return {
- value: o && o[i++],
- done: !o
- };
- }
- };
- throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
-};
-
-var __importDefault = this && this.__importDefault || function (mod) {
- return mod && mod.__esModule ? mod : {
- "default": mod
- };
-};
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.DataConnection = void 0;
-
-var util_1 = require("./util");
-
-var logger_1 = __importDefault(require("./logger"));
-
-var negotiator_1 = require("./negotiator");
-
-var enums_1 = require("./enums");
-
-var baseconnection_1 = require("./baseconnection");
-
-var encodingQueue_1 = require("./encodingQueue");
-/**
- * Wraps a DataChannel between two Peers.
- */
-
-
-var DataConnection =
-/** @class */
-function (_super) {
- __extends(DataConnection, _super);
-
- function DataConnection(peerId, provider, options) {
- var _this = _super.call(this, peerId, provider, options) || this;
-
- _this.stringify = JSON.stringify;
- _this.parse = JSON.parse;
- _this._buffer = [];
- _this._bufferSize = 0;
- _this._buffering = false;
- _this._chunkedData = {};
- _this._encodingQueue = new encodingQueue_1.EncodingQueue();
- _this.connectionId = _this.options.connectionId || DataConnection.ID_PREFIX + util_1.util.randomToken();
- _this.label = _this.options.label || _this.connectionId;
- _this.serialization = _this.options.serialization || enums_1.SerializationType.Binary;
- _this.reliable = !!_this.options.reliable;
-
- _this._encodingQueue.on('done', function (ab) {
- _this._bufferedSend(ab);
- });
-
- _this._encodingQueue.on('error', function () {
- logger_1.default.error("DC#" + _this.connectionId + ": Error occured in encoding from blob to arraybuffer, close DC");
-
- _this.close();
- });
-
- _this._negotiator = new negotiator_1.Negotiator(_this);
-
- _this._negotiator.startConnection(_this.options._payload || {
- originator: true
- });
-
- return _this;
- }
-
- Object.defineProperty(DataConnection.prototype, "type", {
- get: function get() {
- return enums_1.ConnectionType.Data;
- },
- enumerable: false,
- configurable: true
- });
- Object.defineProperty(DataConnection.prototype, "dataChannel", {
- get: function get() {
- return this._dc;
- },
- enumerable: false,
- configurable: true
- });
- Object.defineProperty(DataConnection.prototype, "bufferSize", {
- get: function get() {
- return this._bufferSize;
- },
- enumerable: false,
- configurable: true
- });
- /** Called by the Negotiator when the DataChannel is ready. */
-
- DataConnection.prototype.initialize = function (dc) {
- this._dc = dc;
-
- this._configureDataChannel();
- };
-
- DataConnection.prototype._configureDataChannel = function () {
- var _this = this;
-
- if (!util_1.util.supports.binaryBlob || util_1.util.supports.reliable) {
- this.dataChannel.binaryType = "arraybuffer";
- }
-
- this.dataChannel.onopen = function () {
- logger_1.default.log("DC#" + _this.connectionId + " dc connection success");
- _this._open = true;
-
- _this.emit(enums_1.ConnectionEventType.Open);
- };
-
- this.dataChannel.onmessage = function (e) {
- logger_1.default.log("DC#" + _this.connectionId + " dc onmessage:", e.data);
-
- _this._handleDataMessage(e);
- };
-
- this.dataChannel.onclose = function () {
- logger_1.default.log("DC#" + _this.connectionId + " dc closed for:", _this.peer);
-
- _this.close();
- };
- }; // Handles a DataChannel message.
-
-
- DataConnection.prototype._handleDataMessage = function (_a) {
- var _this = this;
-
- var data = _a.data;
- var datatype = data.constructor;
- var isBinarySerialization = this.serialization === enums_1.SerializationType.Binary || this.serialization === enums_1.SerializationType.BinaryUTF8;
- var deserializedData = data;
-
- if (isBinarySerialization) {
- if (datatype === Blob) {
- // Datatype should never be blob
- util_1.util.blobToArrayBuffer(data, function (ab) {
- var unpackedData = util_1.util.unpack(ab);
-
- _this.emit(enums_1.ConnectionEventType.Data, unpackedData);
- });
- return;
- } else if (datatype === ArrayBuffer) {
- deserializedData = util_1.util.unpack(data);
- } else if (datatype === String) {
- // String fallback for binary data for browsers that don't support binary yet
- var ab = util_1.util.binaryStringToArrayBuffer(data);
- deserializedData = util_1.util.unpack(ab);
- }
- } else if (this.serialization === enums_1.SerializationType.JSON) {
- deserializedData = this.parse(data);
- } // Check if we've chunked--if so, piece things back together.
- // We're guaranteed that this isn't 0.
-
-
- if (deserializedData.__peerData) {
- this._handleChunk(deserializedData);
-
- return;
- }
-
- _super.prototype.emit.call(this, enums_1.ConnectionEventType.Data, deserializedData);
- };
-
- DataConnection.prototype._handleChunk = function (data) {
- var id = data.__peerData;
- var chunkInfo = this._chunkedData[id] || {
- data: [],
- count: 0,
- total: data.total
- };
- chunkInfo.data[data.n] = data.data;
- chunkInfo.count++;
- this._chunkedData[id] = chunkInfo;
-
- if (chunkInfo.total === chunkInfo.count) {
- // Clean up before making the recursive call to `_handleDataMessage`.
- delete this._chunkedData[id]; // We've received all the chunks--time to construct the complete data.
-
- var data_1 = new Blob(chunkInfo.data);
-
- this._handleDataMessage({
- data: data_1
- });
- }
- };
- /**
- * Exposed functionality for users.
- */
-
- /** Allows user to close connection. */
-
-
- DataConnection.prototype.close = function () {
- this._buffer = [];
- this._bufferSize = 0;
- this._chunkedData = {};
-
- if (this._negotiator) {
- this._negotiator.cleanup();
-
- this._negotiator = null;
- }
-
- if (this.provider) {
- this.provider._removeConnection(this);
-
- this.provider = null;
- }
-
- if (this.dataChannel) {
- this.dataChannel.onopen = null;
- this.dataChannel.onmessage = null;
- this.dataChannel.onclose = null;
- this._dc = null;
- }
-
- if (this._encodingQueue) {
- this._encodingQueue.destroy();
-
- this._encodingQueue.removeAllListeners();
-
- this._encodingQueue = null;
- }
-
- if (!this.open) {
- return;
- }
-
- this._open = false;
-
- _super.prototype.emit.call(this, enums_1.ConnectionEventType.Close);
- };
- /** Allows user to send data. */
-
-
- DataConnection.prototype.send = function (data, chunked) {
- if (!this.open) {
- _super.prototype.emit.call(this, enums_1.ConnectionEventType.Error, new Error("Connection is not open. You should listen for the `open` event before sending messages."));
-
- return;
- }
-
- if (this.serialization === enums_1.SerializationType.JSON) {
- this._bufferedSend(this.stringify(data));
- } else if (this.serialization === enums_1.SerializationType.Binary || this.serialization === enums_1.SerializationType.BinaryUTF8) {
- var blob = util_1.util.pack(data);
-
- if (!chunked && blob.size > util_1.util.chunkedMTU) {
- this._sendChunks(blob);
-
- return;
- }
-
- if (!util_1.util.supports.binaryBlob) {
- // We only do this if we really need to (e.g. blobs are not supported),
- // because this conversion is costly.
- this._encodingQueue.enque(blob);
- } else {
- this._bufferedSend(blob);
- }
- } else {
- this._bufferedSend(data);
- }
- };
-
- DataConnection.prototype._bufferedSend = function (msg) {
- if (this._buffering || !this._trySend(msg)) {
- this._buffer.push(msg);
-
- this._bufferSize = this._buffer.length;
- }
- }; // Returns true if the send succeeds.
-
-
- DataConnection.prototype._trySend = function (msg) {
- var _this = this;
-
- if (!this.open) {
- return false;
- }
-
- if (this.dataChannel.bufferedAmount > DataConnection.MAX_BUFFERED_AMOUNT) {
- this._buffering = true;
- setTimeout(function () {
- _this._buffering = false;
-
- _this._tryBuffer();
- }, 50);
- return false;
- }
-
- try {
- this.dataChannel.send(msg);
- } catch (e) {
- logger_1.default.error("DC#:" + this.connectionId + " Error when sending:", e);
- this._buffering = true;
- this.close();
- return false;
- }
-
- return true;
- }; // Try to send the first message in the buffer.
-
-
- DataConnection.prototype._tryBuffer = function () {
- if (!this.open) {
- return;
- }
-
- if (this._buffer.length === 0) {
- return;
- }
-
- var msg = this._buffer[0];
-
- if (this._trySend(msg)) {
- this._buffer.shift();
-
- this._bufferSize = this._buffer.length;
-
- this._tryBuffer();
- }
- };
-
- DataConnection.prototype._sendChunks = function (blob) {
- var e_1, _a;
-
- var blobs = util_1.util.chunk(blob);
- logger_1.default.log("DC#" + this.connectionId + " Try to send " + blobs.length + " chunks...");
-
- try {
- for (var blobs_1 = __values(blobs), blobs_1_1 = blobs_1.next(); !blobs_1_1.done; blobs_1_1 = blobs_1.next()) {
- var blob_1 = blobs_1_1.value;
- this.send(blob_1, true);
- }
- } catch (e_1_1) {
- e_1 = {
- error: e_1_1
- };
- } finally {
- try {
- if (blobs_1_1 && !blobs_1_1.done && (_a = blobs_1.return)) _a.call(blobs_1);
- } finally {
- if (e_1) throw e_1.error;
- }
- }
- };
-
- DataConnection.prototype.handleMessage = function (message) {
- var payload = message.payload;
-
- switch (message.type) {
- case enums_1.ServerMessageType.Answer:
- this._negotiator.handleSDP(message.type, payload.sdp);
-
- break;
-
- case enums_1.ServerMessageType.Candidate:
- this._negotiator.handleCandidate(payload.candidate);
-
- break;
-
- default:
- logger_1.default.warn("Unrecognized message type:", message.type, "from peer:", this.peer);
- break;
- }
- };
-
- DataConnection.ID_PREFIX = "dc_";
- DataConnection.MAX_BUFFERED_AMOUNT = 8 * 1024 * 1024;
- return DataConnection;
-}(baseconnection_1.BaseConnection);
-
-exports.DataConnection = DataConnection;
-},{"./util":"BHXf","./logger":"WOs9","./negotiator":"HCdX","./enums":"ZRYf","./baseconnection":"tQFK","./encodingQueue":"GGp6"}],"in7L":[function(require,module,exports) {
-"use strict";
-
-var __awaiter = this && this.__awaiter || function (thisArg, _arguments, P, generator) {
- function adopt(value) {
- return value instanceof P ? value : new P(function (resolve) {
- resolve(value);
- });
- }
-
- return new (P || (P = Promise))(function (resolve, reject) {
- function fulfilled(value) {
- try {
- step(generator.next(value));
- } catch (e) {
- reject(e);
- }
- }
-
- function rejected(value) {
- try {
- step(generator["throw"](value));
- } catch (e) {
- reject(e);
- }
- }
-
- function step(result) {
- result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected);
- }
-
- step((generator = generator.apply(thisArg, _arguments || [])).next());
- });
-};
-
-var __generator = this && this.__generator || function (thisArg, body) {
- var _ = {
- label: 0,
- sent: function sent() {
- if (t[0] & 1) throw t[1];
- return t[1];
- },
- trys: [],
- ops: []
- },
- f,
- y,
- t,
- g;
- return g = {
- next: verb(0),
- "throw": verb(1),
- "return": verb(2)
- }, typeof Symbol === "function" && (g[Symbol.iterator] = function () {
- return this;
- }), g;
-
- function verb(n) {
- return function (v) {
- return step([n, v]);
- };
- }
-
- function step(op) {
- if (f) throw new TypeError("Generator is already executing.");
-
- while (_) {
- try {
- if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
- if (y = 0, t) op = [op[0] & 2, t.value];
-
- switch (op[0]) {
- case 0:
- case 1:
- t = op;
- break;
-
- case 4:
- _.label++;
- return {
- value: op[1],
- done: false
- };
-
- case 5:
- _.label++;
- y = op[1];
- op = [0];
- continue;
-
- case 7:
- op = _.ops.pop();
-
- _.trys.pop();
-
- continue;
-
- default:
- if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) {
- _ = 0;
- continue;
- }
-
- if (op[0] === 3 && (!t || op[1] > t[0] && op[1] < t[3])) {
- _.label = op[1];
- break;
- }
-
- if (op[0] === 6 && _.label < t[1]) {
- _.label = t[1];
- t = op;
- break;
- }
-
- if (t && _.label < t[2]) {
- _.label = t[2];
-
- _.ops.push(op);
-
- break;
- }
-
- if (t[2]) _.ops.pop();
-
- _.trys.pop();
-
- continue;
- }
-
- op = body.call(thisArg, _);
- } catch (e) {
- op = [6, e];
- y = 0;
- } finally {
- f = t = 0;
- }
- }
-
- if (op[0] & 5) throw op[1];
- return {
- value: op[0] ? op[1] : void 0,
- done: true
- };
- }
-};
-
-var __importDefault = this && this.__importDefault || function (mod) {
- return mod && mod.__esModule ? mod : {
- "default": mod
- };
-};
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.API = void 0;
-
-var util_1 = require("./util");
-
-var logger_1 = __importDefault(require("./logger"));
-
-var API =
-/** @class */
-function () {
- function API(_options) {
- this._options = _options;
- }
-
- API.prototype._buildUrl = function (method) {
- var protocol = this._options.secure ? "https://" : "http://";
- var url = protocol + this._options.host + ":" + this._options.port + this._options.path + this._options.key + "/" + method;
- var queryString = "?ts=" + new Date().getTime() + "" + Math.random();
- url += queryString;
- return url;
- };
- /** Get a unique ID from the server via XHR and initialize with it. */
-
-
- API.prototype.retrieveId = function () {
- return __awaiter(this, void 0, Promise, function () {
- var url, response, error_1, pathError;
- return __generator(this, function (_a) {
- switch (_a.label) {
- case 0:
- url = this._buildUrl("id");
- _a.label = 1;
-
- case 1:
- _a.trys.push([1, 3,, 4]);
-
- return [4
- /*yield*/
- , fetch(url)];
-
- case 2:
- response = _a.sent();
-
- if (response.status !== 200) {
- throw new Error("Error. Status:" + response.status);
- }
-
- return [2
- /*return*/
- , response.text()];
-
- case 3:
- error_1 = _a.sent();
- logger_1.default.error("Error retrieving ID", error_1);
- pathError = "";
-
- if (this._options.path === "/" && this._options.host !== util_1.util.CLOUD_HOST) {
- pathError = " If you passed in a `path` to your self-hosted PeerServer, " + "you'll also need to pass in that same path when creating a new " + "Peer.";
- }
-
- throw new Error("Could not get an ID from the server." + pathError);
-
- case 4:
- return [2
- /*return*/
- ];
- }
- });
- });
- };
- /** @deprecated */
-
-
- API.prototype.listAllPeers = function () {
- return __awaiter(this, void 0, Promise, function () {
- var url, response, helpfulError, error_2;
- return __generator(this, function (_a) {
- switch (_a.label) {
- case 0:
- url = this._buildUrl("peers");
- _a.label = 1;
-
- case 1:
- _a.trys.push([1, 3,, 4]);
-
- return [4
- /*yield*/
- , fetch(url)];
-
- case 2:
- response = _a.sent();
-
- if (response.status !== 200) {
- if (response.status === 401) {
- helpfulError = "";
-
- if (this._options.host === util_1.util.CLOUD_HOST) {
- helpfulError = "It looks like you're using the cloud server. You can email " + "team@peerjs.com to enable peer listing for your API key.";
- } else {
- helpfulError = "You need to enable `allow_discovery` on your self-hosted " + "PeerServer to use this feature.";
- }
-
- throw new Error("It doesn't look like you have permission to list peers IDs. " + helpfulError);
- }
-
- throw new Error("Error. Status:" + response.status);
- }
-
- return [2
- /*return*/
- , response.json()];
-
- case 3:
- error_2 = _a.sent();
- logger_1.default.error("Error retrieving list peers", error_2);
- throw new Error("Could not get list peers from the server." + error_2);
-
- case 4:
- return [2
- /*return*/
- ];
- }
- });
- });
- };
-
- return API;
-}();
-
-exports.API = API;
-},{"./util":"BHXf","./logger":"WOs9"}],"Hxpd":[function(require,module,exports) {
-"use strict";
-
-var __extends = this && this.__extends || function () {
- var _extendStatics = function extendStatics(d, b) {
- _extendStatics = Object.setPrototypeOf || {
- __proto__: []
- } instanceof Array && function (d, b) {
- d.__proto__ = b;
- } || function (d, b) {
- for (var p in b) {
- if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p];
- }
- };
-
- return _extendStatics(d, b);
- };
-
- return function (d, b) {
- if (typeof b !== "function" && b !== null) throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
-
- _extendStatics(d, b);
-
- function __() {
- this.constructor = d;
- }
-
- d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
- };
-}();
-
-var __assign = this && this.__assign || function () {
- __assign = Object.assign || function (t) {
- for (var s, i = 1, n = arguments.length; i < n; i++) {
- s = arguments[i];
-
- for (var p in s) {
- if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];
- }
- }
-
- return t;
- };
-
- return __assign.apply(this, arguments);
-};
-
-var __values = this && this.__values || function (o) {
- var s = typeof Symbol === "function" && Symbol.iterator,
- m = s && o[s],
- i = 0;
- if (m) return m.call(o);
- if (o && typeof o.length === "number") return {
- next: function next() {
- if (o && i >= o.length) o = void 0;
- return {
- value: o && o[i++],
- done: !o
- };
- }
- };
- throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
-};
-
-var __read = this && this.__read || function (o, n) {
- var m = typeof Symbol === "function" && o[Symbol.iterator];
- if (!m) return o;
- var i = m.call(o),
- r,
- ar = [],
- e;
-
- try {
- while ((n === void 0 || n-- > 0) && !(r = i.next()).done) {
- ar.push(r.value);
- }
- } catch (error) {
- e = {
- error: error
- };
- } finally {
- try {
- if (r && !r.done && (m = i["return"])) m.call(i);
- } finally {
- if (e) throw e.error;
- }
- }
-
- return ar;
-};
-
-var __importDefault = this && this.__importDefault || function (mod) {
- return mod && mod.__esModule ? mod : {
- "default": mod
- };
-};
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.Peer = void 0;
-
-var eventemitter3_1 = require("eventemitter3");
-
-var util_1 = require("./util");
-
-var logger_1 = __importDefault(require("./logger"));
-
-var socket_1 = require("./socket");
-
-var mediaconnection_1 = require("./mediaconnection");
-
-var dataconnection_1 = require("./dataconnection");
-
-var enums_1 = require("./enums");
-
-var api_1 = require("./api");
-
-var PeerOptions =
-/** @class */
-function () {
- function PeerOptions() {}
-
- return PeerOptions;
-}();
-/**
- * A peer who can initiate connections with other peers.
- */
-
-
-var Peer =
-/** @class */
-function (_super) {
- __extends(Peer, _super);
-
- function Peer(id, options) {
- var _this = _super.call(this) || this;
-
- _this._id = null;
- _this._lastServerId = null; // States.
-
- _this._destroyed = false; // Connections have been killed
-
- _this._disconnected = false; // Connection to PeerServer killed but P2P connections still active
-
- _this._open = false; // Sockets and such are not yet open.
-
- _this._connections = new Map(); // All connections for this peer.
-
- _this._lostMessages = new Map(); // src => [list of messages]
-
- var userId; // Deal with overloading
-
- if (id && id.constructor == Object) {
- options = id;
- } else if (id) {
- userId = id.toString();
- } // Configurize options
-
-
- options = __assign({
- debug: 0,
- host: util_1.util.CLOUD_HOST,
- port: util_1.util.CLOUD_PORT,
- path: "/",
- key: Peer.DEFAULT_KEY,
- token: util_1.util.randomToken(),
- config: util_1.util.defaultConfig
- }, options);
- _this._options = options; // Detect relative URL host.
-
- if (_this._options.host === "/") {
- _this._options.host = window.location.hostname;
- } // Set path correctly.
-
-
- if (_this._options.path) {
- if (_this._options.path[0] !== "/") {
- _this._options.path = "/" + _this._options.path;
- }
-
- if (_this._options.path[_this._options.path.length - 1] !== "/") {
- _this._options.path += "/";
- }
- } // Set whether we use SSL to same as current host
-
-
- if (_this._options.secure === undefined && _this._options.host !== util_1.util.CLOUD_HOST) {
- _this._options.secure = util_1.util.isSecure();
- } else if (_this._options.host == util_1.util.CLOUD_HOST) {
- _this._options.secure = true;
- } // Set a custom log function if present
-
-
- if (_this._options.logFunction) {
- logger_1.default.setLogFunction(_this._options.logFunction);
- }
-
- logger_1.default.logLevel = _this._options.debug || 0;
- _this._api = new api_1.API(options);
- _this._socket = _this._createServerConnection(); // Sanity checks
- // Ensure WebRTC supported
-
- if (!util_1.util.supports.audioVideo && !util_1.util.supports.data) {
- _this._delayedAbort(enums_1.PeerErrorType.BrowserIncompatible, "The current browser does not support WebRTC");
-
- return _this;
- } // Ensure alphanumeric id
-
-
- if (!!userId && !util_1.util.validateId(userId)) {
- _this._delayedAbort(enums_1.PeerErrorType.InvalidID, "ID \"" + userId + "\" is invalid");
-
- return _this;
- }
-
- if (userId) {
- _this._initialize(userId);
- } else {
- _this._api.retrieveId().then(function (id) {
- return _this._initialize(id);
- }).catch(function (error) {
- return _this._abort(enums_1.PeerErrorType.ServerError, error);
- });
- }
-
- return _this;
- }
-
- Object.defineProperty(Peer.prototype, "id", {
- get: function get() {
- return this._id;
- },
- enumerable: false,
- configurable: true
- });
- Object.defineProperty(Peer.prototype, "options", {
- get: function get() {
- return this._options;
- },
- enumerable: false,
- configurable: true
- });
- Object.defineProperty(Peer.prototype, "open", {
- get: function get() {
- return this._open;
- },
- enumerable: false,
- configurable: true
- });
- Object.defineProperty(Peer.prototype, "socket", {
- get: function get() {
- return this._socket;
- },
- enumerable: false,
- configurable: true
- });
- Object.defineProperty(Peer.prototype, "connections", {
- /**
- * @deprecated
- * Return type will change from Object to Map<string,[]>
- */
- get: function get() {
- var e_1, _a;
-
- var plainConnections = Object.create(null);
-
- try {
- for (var _b = __values(this._connections), _c = _b.next(); !_c.done; _c = _b.next()) {
- var _d = __read(_c.value, 2),
- k = _d[0],
- v = _d[1];
-
- plainConnections[k] = v;
- }
- } catch (e_1_1) {
- e_1 = {
- error: e_1_1
- };
- } finally {
- try {
- if (_c && !_c.done && (_a = _b.return)) _a.call(_b);
- } finally {
- if (e_1) throw e_1.error;
- }
- }
-
- return plainConnections;
- },
- enumerable: false,
- configurable: true
- });
- Object.defineProperty(Peer.prototype, "destroyed", {
- get: function get() {
- return this._destroyed;
- },
- enumerable: false,
- configurable: true
- });
- Object.defineProperty(Peer.prototype, "disconnected", {
- get: function get() {
- return this._disconnected;
- },
- enumerable: false,
- configurable: true
- });
-
- Peer.prototype._createServerConnection = function () {
- var _this = this;
-
- var socket = new socket_1.Socket(this._options.secure, this._options.host, this._options.port, this._options.path, this._options.key, this._options.pingInterval);
- socket.on(enums_1.SocketEventType.Message, function (data) {
- _this._handleMessage(data);
- });
- socket.on(enums_1.SocketEventType.Error, function (error) {
- _this._abort(enums_1.PeerErrorType.SocketError, error);
- });
- socket.on(enums_1.SocketEventType.Disconnected, function () {
- if (_this.disconnected) {
- return;
- }
-
- _this.emitError(enums_1.PeerErrorType.Network, "Lost connection to server.");
-
- _this.disconnect();
- });
- socket.on(enums_1.SocketEventType.Close, function () {
- if (_this.disconnected) {
- return;
- }
-
- _this._abort(enums_1.PeerErrorType.SocketClosed, "Underlying socket is already closed.");
- });
- return socket;
- };
- /** Initialize a connection with the server. */
-
-
- Peer.prototype._initialize = function (id) {
- this._id = id;
- this.socket.start(id, this._options.token);
- };
- /** Handles messages from the server. */
-
-
- Peer.prototype._handleMessage = function (message) {
- var e_2, _a;
-
- var type = message.type;
- var payload = message.payload;
- var peerId = message.src;
-
- switch (type) {
- case enums_1.ServerMessageType.Open:
- // The connection to the server is open.
- this._lastServerId = this.id;
- this._open = true;
- this.emit(enums_1.PeerEventType.Open, this.id);
- break;
-
- case enums_1.ServerMessageType.Error:
- // Server error.
- this._abort(enums_1.PeerErrorType.ServerError, payload.msg);
-
- break;
-
- case enums_1.ServerMessageType.IdTaken:
- // The selected ID is taken.
- this._abort(enums_1.PeerErrorType.UnavailableID, "ID \"" + this.id + "\" is taken");
-
- break;
-
- case enums_1.ServerMessageType.InvalidKey:
- // The given API key cannot be found.
- this._abort(enums_1.PeerErrorType.InvalidKey, "API KEY \"" + this._options.key + "\" is invalid");
-
- break;
-
- case enums_1.ServerMessageType.Leave:
- // Another peer has closed its connection to this peer.
- logger_1.default.log("Received leave message from " + peerId);
-
- this._cleanupPeer(peerId);
-
- this._connections.delete(peerId);
-
- break;
-
- case enums_1.ServerMessageType.Expire:
- // The offer sent to a peer has expired without response.
- this.emitError(enums_1.PeerErrorType.PeerUnavailable, "Could not connect to peer " + peerId);
- break;
-
- case enums_1.ServerMessageType.Offer:
- {
- // we should consider switching this to CALL/CONNECT, but this is the least breaking option.
- var connectionId = payload.connectionId;
- var connection = this.getConnection(peerId, connectionId);
-
- if (connection) {
- connection.close();
- logger_1.default.warn("Offer received for existing Connection ID:" + connectionId);
- } // Create a new connection.
-
-
- if (payload.type === enums_1.ConnectionType.Media) {
- connection = new mediaconnection_1.MediaConnection(peerId, this, {
- connectionId: connectionId,
- _payload: payload,
- metadata: payload.metadata
- });
-
- this._addConnection(peerId, connection);
-
- this.emit(enums_1.PeerEventType.Call, connection);
- } else if (payload.type === enums_1.ConnectionType.Data) {
- connection = new dataconnection_1.DataConnection(peerId, this, {
- connectionId: connectionId,
- _payload: payload,
- metadata: payload.metadata,
- label: payload.label,
- serialization: payload.serialization,
- reliable: payload.reliable
- });
-
- this._addConnection(peerId, connection);
-
- this.emit(enums_1.PeerEventType.Connection, connection);
- } else {
- logger_1.default.warn("Received malformed connection type:" + payload.type);
- return;
- } // Find messages.
-
-
- var messages = this._getMessages(connectionId);
-
- try {
- for (var messages_1 = __values(messages), messages_1_1 = messages_1.next(); !messages_1_1.done; messages_1_1 = messages_1.next()) {
- var message_1 = messages_1_1.value;
- connection.handleMessage(message_1);
- }
- } catch (e_2_1) {
- e_2 = {
- error: e_2_1
- };
- } finally {
- try {
- if (messages_1_1 && !messages_1_1.done && (_a = messages_1.return)) _a.call(messages_1);
- } finally {
- if (e_2) throw e_2.error;
- }
- }
-
- break;
- }
-
- default:
- {
- if (!payload) {
- logger_1.default.warn("You received a malformed message from " + peerId + " of type " + type);
- return;
- }
-
- var connectionId = payload.connectionId;
- var connection = this.getConnection(peerId, connectionId);
-
- if (connection && connection.peerConnection) {
- // Pass it on.
- connection.handleMessage(message);
- } else if (connectionId) {
- // Store for possible later use
- this._storeMessage(connectionId, message);
- } else {
- logger_1.default.warn("You received an unrecognized message:", message);
- }
-
- break;
- }
- }
- };
- /** Stores messages without a set up connection, to be claimed later. */
-
-
- Peer.prototype._storeMessage = function (connectionId, message) {
- if (!this._lostMessages.has(connectionId)) {
- this._lostMessages.set(connectionId, []);
- }
-
- this._lostMessages.get(connectionId).push(message);
- };
- /** Retrieve messages from lost message store */
- //TODO Change it to private
-
-
- Peer.prototype._getMessages = function (connectionId) {
- var messages = this._lostMessages.get(connectionId);
-
- if (messages) {
- this._lostMessages.delete(connectionId);
-
- return messages;
- }
-
- return [];
- };
- /**
- * Returns a DataConnection to the specified peer. See documentation for a
- * complete list of options.
- */
-
-
- Peer.prototype.connect = function (peer, options) {
- if (options === void 0) {
- options = {};
- }
-
- if (this.disconnected) {
- logger_1.default.warn("You cannot connect to a new Peer because you called " + ".disconnect() on this Peer and ended your connection with the " + "server. You can create a new Peer to reconnect, or call reconnect " + "on this peer if you believe its ID to still be available.");
- this.emitError(enums_1.PeerErrorType.Disconnected, "Cannot connect to new Peer after disconnecting from server.");
- return;
- }
-
- var dataConnection = new dataconnection_1.DataConnection(peer, this, options);
-
- this._addConnection(peer, dataConnection);
-
- return dataConnection;
- };
- /**
- * Returns a MediaConnection to the specified peer. See documentation for a
- * complete list of options.
- */
-
-
- Peer.prototype.call = function (peer, stream, options) {
- if (options === void 0) {
- options = {};
- }
-
- if (this.disconnected) {
- logger_1.default.warn("You cannot connect to a new Peer because you called " + ".disconnect() on this Peer and ended your connection with the " + "server. You can create a new Peer to reconnect.");
- this.emitError(enums_1.PeerErrorType.Disconnected, "Cannot connect to new Peer after disconnecting from server.");
- return;
- }
-
- if (!stream) {
- logger_1.default.error("To call a peer, you must provide a stream from your browser's `getUserMedia`.");
- return;
- }
-
- options._stream = stream;
- var mediaConnection = new mediaconnection_1.MediaConnection(peer, this, options);
-
- this._addConnection(peer, mediaConnection);
-
- return mediaConnection;
- };
- /** Add a data/media connection to this peer. */
-
-
- Peer.prototype._addConnection = function (peerId, connection) {
- logger_1.default.log("add connection " + connection.type + ":" + connection.connectionId + " to peerId:" + peerId);
-
- if (!this._connections.has(peerId)) {
- this._connections.set(peerId, []);
- }
-
- this._connections.get(peerId).push(connection);
- }; //TODO should be private
-
-
- Peer.prototype._removeConnection = function (connection) {
- var connections = this._connections.get(connection.peer);
-
- if (connections) {
- var index = connections.indexOf(connection);
-
- if (index !== -1) {
- connections.splice(index, 1);
- }
- } //remove from lost messages
-
-
- this._lostMessages.delete(connection.connectionId);
- };
- /** Retrieve a data/media connection for this peer. */
-
-
- Peer.prototype.getConnection = function (peerId, connectionId) {
- var e_3, _a;
-
- var connections = this._connections.get(peerId);
-
- if (!connections) {
- return null;
- }
-
- try {
- for (var connections_1 = __values(connections), connections_1_1 = connections_1.next(); !connections_1_1.done; connections_1_1 = connections_1.next()) {
- var connection = connections_1_1.value;
-
- if (connection.connectionId === connectionId) {
- return connection;
- }
- }
- } catch (e_3_1) {
- e_3 = {
- error: e_3_1
- };
- } finally {
- try {
- if (connections_1_1 && !connections_1_1.done && (_a = connections_1.return)) _a.call(connections_1);
- } finally {
- if (e_3) throw e_3.error;
- }
- }
-
- return null;
- };
-
- Peer.prototype._delayedAbort = function (type, message) {
- var _this = this;
-
- setTimeout(function () {
- _this._abort(type, message);
- }, 0);
- };
- /**
- * Emits an error message and destroys the Peer.
- * The Peer is not destroyed if it's in a disconnected state, in which case
- * it retains its disconnected state and its existing connections.
- */
-
-
- Peer.prototype._abort = function (type, message) {
- logger_1.default.error("Aborting!");
- this.emitError(type, message);
-
- if (!this._lastServerId) {
- this.destroy();
- } else {
- this.disconnect();
- }
- };
- /** Emits a typed error message. */
-
-
- Peer.prototype.emitError = function (type, err) {
- logger_1.default.error("Error:", err);
- var error;
-
- if (typeof err === "string") {
- error = new Error(err);
- } else {
- error = err;
- }
-
- error.type = type;
- this.emit(enums_1.PeerEventType.Error, error);
- };
- /**
- * Destroys the Peer: closes all active connections as well as the connection
- * to the server.
- * Warning: The peer can no longer create or accept connections after being
- * destroyed.
- */
-
-
- Peer.prototype.destroy = function () {
- if (this.destroyed) {
- return;
- }
-
- logger_1.default.log("Destroy peer with ID:" + this.id);
- this.disconnect();
-
- this._cleanup();
-
- this._destroyed = true;
- this.emit(enums_1.PeerEventType.Close);
- };
- /** Disconnects every connection on this peer. */
-
-
- Peer.prototype._cleanup = function () {
- var e_4, _a;
-
- try {
- for (var _b = __values(this._connections.keys()), _c = _b.next(); !_c.done; _c = _b.next()) {
- var peerId = _c.value;
-
- this._cleanupPeer(peerId);
-
- this._connections.delete(peerId);
- }
- } catch (e_4_1) {
- e_4 = {
- error: e_4_1
- };
- } finally {
- try {
- if (_c && !_c.done && (_a = _b.return)) _a.call(_b);
- } finally {
- if (e_4) throw e_4.error;
- }
- }
-
- this.socket.removeAllListeners();
- };
- /** Closes all connections to this peer. */
-
-
- Peer.prototype._cleanupPeer = function (peerId) {
- var e_5, _a;
-
- var connections = this._connections.get(peerId);
-
- if (!connections) return;
-
- try {
- for (var connections_2 = __values(connections), connections_2_1 = connections_2.next(); !connections_2_1.done; connections_2_1 = connections_2.next()) {
- var connection = connections_2_1.value;
- connection.close();
- }
- } catch (e_5_1) {
- e_5 = {
- error: e_5_1
- };
- } finally {
- try {
- if (connections_2_1 && !connections_2_1.done && (_a = connections_2.return)) _a.call(connections_2);
- } finally {
- if (e_5) throw e_5.error;
- }
- }
- };
- /**
- * Disconnects the Peer's connection to the PeerServer. Does not close any
- * active connections.
- * Warning: The peer can no longer create or accept connections after being
- * disconnected. It also cannot reconnect to the server.
- */
-
-
- Peer.prototype.disconnect = function () {
- if (this.disconnected) {
- return;
- }
-
- var currentId = this.id;
- logger_1.default.log("Disconnect peer with ID:" + currentId);
- this._disconnected = true;
- this._open = false;
- this.socket.close();
- this._lastServerId = currentId;
- this._id = null;
- this.emit(enums_1.PeerEventType.Disconnected, currentId);
- };
- /** Attempts to reconnect with the same ID. */
-
-
- Peer.prototype.reconnect = function () {
- if (this.disconnected && !this.destroyed) {
- logger_1.default.log("Attempting reconnection to server with ID " + this._lastServerId);
- this._disconnected = false;
-
- this._initialize(this._lastServerId);
- } else if (this.destroyed) {
- throw new Error("This peer cannot reconnect to the server. It has already been destroyed.");
- } else if (!this.disconnected && !this.open) {
- // Do nothing. We're still connecting the first time.
- logger_1.default.error("In a hurry? We're still trying to make the initial connection!");
- } else {
- throw new Error("Peer " + this.id + " cannot reconnect because it is not disconnected from the server!");
- }
- };
- /**
- * Get a list of available peer IDs. If you're running your own server, you'll
- * want to set allow_discovery: true in the PeerServer options. If you're using
- * the cloud server, email team@peerjs.com to get the functionality enabled for
- * your key.
- */
-
-
- Peer.prototype.listAllPeers = function (cb) {
- var _this = this;
-
- if (cb === void 0) {
- cb = function cb(_) {};
- }
-
- this._api.listAllPeers().then(function (peers) {
- return cb(peers);
- }).catch(function (error) {
- return _this._abort(enums_1.PeerErrorType.ServerError, error);
- });
- };
-
- Peer.DEFAULT_KEY = "peerjs";
- return Peer;
-}(eventemitter3_1.EventEmitter);
-
-exports.Peer = Peer;
-},{"eventemitter3":"JJlS","./util":"BHXf","./logger":"WOs9","./socket":"wJlv","./mediaconnection":"dbHP","./dataconnection":"GBTQ","./enums":"ZRYf","./api":"in7L"}],"iTK6":[function(require,module,exports) {
-"use strict";
-
-Object.defineProperty(exports, "__esModule", {
- value: true
-});
-exports.peerjs = void 0;
-
-var util_1 = require("./util");
-
-var peer_1 = require("./peer");
-
-exports.peerjs = {
- Peer: peer_1.Peer,
- util: util_1.util
-};
-exports.default = peer_1.Peer;
-window.peerjs = exports.peerjs;
-/** @deprecated Should use peerjs namespace */
-
-window.Peer = peer_1.Peer;
-},{"./util":"BHXf","./peer":"Hxpd"}]},{},["iTK6"], null)
-//# sourceMappingURL=/peerjs.js.map
\ No newline at end of file
diff --git a/node_modules/peerjs/dist/peerjs.js.map b/node_modules/peerjs/dist/peerjs.js.map
deleted file mode 100644
index fd1786e..0000000
--- a/node_modules/peerjs/dist/peerjs.js.map
+++ /dev/null
@@ -1 +0,0 @@
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binaryFeatures = {};\r\nbinaryFeatures.useBlobBuilder = (function () {\r\n try {\r\n new Blob([]);\r\n return false;\r\n } catch (e) {\r\n return true;\r\n }\r\n})();\r\n\r\nbinaryFeatures.useArrayBufferView = !binaryFeatures.useBlobBuilder && (function () {\r\n try {\r\n return (new Blob([new Uint8Array([])])).size === 0;\r\n } catch (e) {\r\n return true;\r\n }\r\n})();\r\n\r\nmodule.exports.binaryFeatures = binaryFeatures;\r\nvar BlobBuilder = module.exports.BlobBuilder;\r\nif (typeof window !== 'undefined') {\r\n BlobBuilder = module.exports.BlobBuilder = window.WebKitBlobBuilder ||\r\n window.MozBlobBuilder || window.MSBlobBuilder || window.BlobBuilder;\r\n}\r\n\r\nfunction BufferBuilder () {\r\n this._pieces = [];\r\n this._parts = [];\r\n}\r\n\r\nBufferBuilder.prototype.append = function (data) {\r\n if (typeof data === 'number') {\r\n this._pieces.push(data);\r\n } else {\r\n this.flush();\r\n this._parts.push(data);\r\n }\r\n};\r\n\r\nBufferBuilder.prototype.flush = function () {\r\n if (this._pieces.length > 0) {\r\n var buf = new Uint8Array(this._pieces);\r\n if (!binaryFeatures.useArrayBufferView) {\r\n buf = buf.buffer;\r\n }\r\n this._parts.push(buf);\r\n this._pieces = [];\r\n }\r\n};\r\n\r\nBufferBuilder.prototype.getBuffer = function () {\r\n this.flush();\r\n if (binaryFeatures.useBlobBuilder) {\r\n var builder = new BlobBuilder();\r\n for (var i = 0, ii = this._parts.length; i < ii; i++) {\r\n builder.append(this._parts[i]);\r\n }\r\n return builder.getBlob();\r\n } else {\r\n return new Blob(this._parts);\r\n }\r\n};\r\n\r\nmodule.exports.BufferBuilder = BufferBuilder;\r\n","var BufferBuilder = require('./bufferbuilder').BufferBuilder;\r\nvar binaryFeatures = require('./bufferbuilder').binaryFeatures;\r\n\r\nvar BinaryPack = {\r\n unpack: function (data) {\r\n var unpacker = new Unpacker(data);\r\n return unpacker.unpack();\r\n },\r\n pack: function (data) {\r\n var packer = new Packer();\r\n packer.pack(data);\r\n var buffer = packer.getBuffer();\r\n return buffer;\r\n }\r\n};\r\n\r\nmodule.exports = BinaryPack;\r\n\r\nfunction Unpacker (data) {\r\n // Data is ArrayBuffer\r\n this.index = 0;\r\n this.dataBuffer = data;\r\n this.dataView = new Uint8Array(this.dataBuffer);\r\n this.length = this.dataBuffer.byteLength;\r\n}\r\n\r\nUnpacker.prototype.unpack = function () {\r\n var type = this.unpack_uint8();\r\n if (type < 0x80) {\r\n return type;\r\n } else if ((type ^ 0xe0) < 0x20) {\r\n return (type ^ 0xe0) - 0x20;\r\n }\r\n\r\n var size;\r\n if ((size = type ^ 0xa0) <= 0x0f) {\r\n return this.unpack_raw(size);\r\n } else if ((size = type ^ 0xb0) <= 0x0f) {\r\n return this.unpack_string(size);\r\n } else if ((size = type ^ 0x90) <= 0x0f) {\r\n return this.unpack_array(size);\r\n } else if ((size = type ^ 0x80) <= 0x0f) {\r\n return this.unpack_map(size);\r\n }\r\n\r\n switch (type) {\r\n case 0xc0:\r\n return null;\r\n case 0xc1:\r\n return undefined;\r\n case 0xc2:\r\n return false;\r\n case 0xc3:\r\n return true;\r\n case 0xca:\r\n return this.unpack_float();\r\n case 0xcb:\r\n return this.unpack_double();\r\n case 0xcc:\r\n return this.unpack_uint8();\r\n case 0xcd:\r\n return this.unpack_uint16();\r\n case 0xce:\r\n return this.unpack_uint32();\r\n case 0xcf:\r\n return this.unpack_uint64();\r\n case 0xd0:\r\n return this.unpack_int8();\r\n case 0xd1:\r\n return this.unpack_int16();\r\n case 0xd2:\r\n return this.unpack_int32();\r\n case 0xd3:\r\n return this.unpack_int64();\r\n case 0xd4:\r\n return undefined;\r\n case 0xd5:\r\n return undefined;\r\n case 0xd6:\r\n return undefined;\r\n case 0xd7:\r\n return undefined;\r\n case 0xd8:\r\n size = this.unpack_uint16();\r\n return this.unpack_string(size);\r\n case 0xd9:\r\n size = this.unpack_uint32();\r\n return this.unpack_string(size);\r\n case 0xda:\r\n size = this.unpack_uint16();\r\n return this.unpack_raw(size);\r\n case 0xdb:\r\n size = this.unpack_uint32();\r\n return this.unpack_raw(size);\r\n case 0xdc:\r\n size = this.unpack_uint16();\r\n return this.unpack_array(size);\r\n case 0xdd:\r\n size = this.unpack_uint32();\r\n return this.unpack_array(size);\r\n case 0xde:\r\n size = this.unpack_uint16();\r\n return this.unpack_map(size);\r\n case 0xdf:\r\n size = this.unpack_uint32();\r\n return this.unpack_map(size);\r\n }\r\n};\r\n\r\nUnpacker.prototype.unpack_uint8 = function () {\r\n var byte = this.dataView[this.index] & 0xff;\r\n this.index++;\r\n return byte;\r\n};\r\n\r\nUnpacker.prototype.unpack_uint16 = function () {\r\n var bytes = this.read(2);\r\n var uint16 =\r\n ((bytes[0] & 0xff) * 256) + (bytes[1] & 0xff);\r\n this.index += 2;\r\n return uint16;\r\n};\r\n\r\nUnpacker.prototype.unpack_uint32 = function () {\r\n var bytes = this.read(4);\r\n var uint32 =\r\n ((bytes[0] * 256 +\r\n bytes[1]) * 256 +\r\n bytes[2]) * 256 +\r\n bytes[3];\r\n this.index += 4;\r\n return uint32;\r\n};\r\n\r\nUnpacker.prototype.unpack_uint64 = function () {\r\n var bytes = this.read(8);\r\n var uint64 =\r\n ((((((bytes[0] * 256 +\r\n bytes[1]) * 256 +\r\n bytes[2]) * 256 +\r\n bytes[3]) * 256 +\r\n bytes[4]) * 256 +\r\n bytes[5]) * 256 +\r\n bytes[6]) * 256 +\r\n bytes[7];\r\n this.index += 8;\r\n return uint64;\r\n};\r\n\r\nUnpacker.prototype.unpack_int8 = function () {\r\n var uint8 = this.unpack_uint8();\r\n return (uint8 < 0x80) ? uint8 : uint8 - (1 << 8);\r\n};\r\n\r\nUnpacker.prototype.unpack_int16 = function () {\r\n var uint16 = this.unpack_uint16();\r\n return (uint16 < 0x8000) ? uint16 : uint16 - (1 << 16);\r\n};\r\n\r\nUnpacker.prototype.unpack_int32 = function () {\r\n var uint32 = this.unpack_uint32();\r\n return (uint32 < Math.pow(2, 31)) ? uint32\r\n : uint32 - Math.pow(2, 32);\r\n};\r\n\r\nUnpacker.prototype.unpack_int64 = function () {\r\n var uint64 = this.unpack_uint64();\r\n return (uint64 < Math.pow(2, 63)) ? uint64\r\n : uint64 - Math.pow(2, 64);\r\n};\r\n\r\nUnpacker.prototype.unpack_raw = function (size) {\r\n if (this.length < this.index + size) {\r\n throw new Error('BinaryPackFailure: index is out of range' +\r\n ' ' + this.index + ' ' + size + ' ' + this.length);\r\n }\r\n var buf = this.dataBuffer.slice(this.index, this.index + size);\r\n this.index += size;\r\n\r\n // buf = util.bufferToString(buf);\r\n\r\n return buf;\r\n};\r\n\r\nUnpacker.prototype.unpack_string = function (size) {\r\n var bytes = this.read(size);\r\n var i = 0;\r\n var str = '';\r\n var c;\r\n var code;\r\n\r\n while (i < size) {\r\n c = bytes[i];\r\n if (c < 128) {\r\n str += String.fromCharCode(c);\r\n i++;\r\n } else if ((c ^ 0xc0) < 32) {\r\n code = ((c ^ 0xc0) << 6) | (bytes[i + 1] & 63);\r\n str += String.fromCharCode(code);\r\n i += 2;\r\n } else {\r\n code = ((c & 15) << 12) | ((bytes[i + 1] & 63) << 6) |\r\n (bytes[i + 2] & 63);\r\n str += String.fromCharCode(code);\r\n i += 3;\r\n }\r\n }\r\n\r\n this.index += size;\r\n return str;\r\n};\r\n\r\nUnpacker.prototype.unpack_array = function (size) {\r\n var objects = new Array(size);\r\n for (var i = 0; i < size; i++) {\r\n objects[i] = this.unpack();\r\n }\r\n return objects;\r\n};\r\n\r\nUnpacker.prototype.unpack_map = function (size) {\r\n var map = {};\r\n for (var i = 0; i < size; i++) {\r\n var key = this.unpack();\r\n var value = this.unpack();\r\n map[key] = value;\r\n }\r\n return map;\r\n};\r\n\r\nUnpacker.prototype.unpack_float = function () {\r\n var uint32 = this.unpack_uint32();\r\n var sign = uint32 >> 31;\r\n var exp = ((uint32 >> 23) & 0xff) - 127;\r\n var fraction = (uint32 & 0x7fffff) | 0x800000;\r\n return (sign === 0 ? 1 : -1) *\r\n fraction * Math.pow(2, exp - 23);\r\n};\r\n\r\nUnpacker.prototype.unpack_double = function () {\r\n var h32 = this.unpack_uint32();\r\n var l32 = this.unpack_uint32();\r\n var sign = h32 >> 31;\r\n var exp = ((h32 >> 20) & 0x7ff) - 1023;\r\n var hfrac = (h32 & 0xfffff) | 0x100000;\r\n var frac = hfrac * Math.pow(2, exp - 20) +\r\n l32 * Math.pow(2, exp - 52);\r\n return (sign === 0 ? 1 : -1) * frac;\r\n};\r\n\r\nUnpacker.prototype.read = function (length) {\r\n var j = this.index;\r\n if (j + length <= this.length) {\r\n return this.dataView.subarray(j, j + length);\r\n } else {\r\n throw new Error('BinaryPackFailure: read index out of range');\r\n }\r\n};\r\n\r\nfunction Packer () {\r\n this.bufferBuilder = new BufferBuilder();\r\n}\r\n\r\nPacker.prototype.getBuffer = function () {\r\n return this.bufferBuilder.getBuffer();\r\n};\r\n\r\nPacker.prototype.pack = function (value) {\r\n var type = typeof (value);\r\n if (type === 'string') {\r\n this.pack_string(value);\r\n } else if (type === 'number') {\r\n if (Math.floor(value) === value) {\r\n this.pack_integer(value);\r\n } else {\r\n this.pack_double(value);\r\n }\r\n } else if (type === 'boolean') {\r\n if (value === true) {\r\n this.bufferBuilder.append(0xc3);\r\n } else if (value === false) {\r\n this.bufferBuilder.append(0xc2);\r\n }\r\n } else if (type === 'undefined') {\r\n this.bufferBuilder.append(0xc0);\r\n } else if (type === 'object') {\r\n if (value === null) {\r\n this.bufferBuilder.append(0xc0);\r\n } else {\r\n var constructor = value.constructor;\r\n if (constructor == Array) {\r\n this.pack_array(value);\r\n } else if (constructor == Blob || constructor == File || value instanceof Blob || value instanceof File) {\r\n this.pack_bin(value);\r\n } else if (constructor == ArrayBuffer) {\r\n if (binaryFeatures.useArrayBufferView) {\r\n this.pack_bin(new Uint8Array(value));\r\n } else {\r\n this.pack_bin(value);\r\n }\r\n } else if ('BYTES_PER_ELEMENT' in value) {\r\n if (binaryFeatures.useArrayBufferView) {\r\n this.pack_bin(new Uint8Array(value.buffer));\r\n } else {\r\n this.pack_bin(value.buffer);\r\n }\r\n } else if ((constructor == Object) || (constructor.toString().startsWith('class'))) {\r\n this.pack_object(value);\r\n } else if (constructor == Date) {\r\n this.pack_string(value.toString());\r\n } else if (typeof value.toBinaryPack === 'function') {\r\n this.bufferBuilder.append(value.toBinaryPack());\r\n } else {\r\n throw new Error('Type \"' + constructor.toString() + '\" not yet supported');\r\n }\r\n }\r\n } else {\r\n throw new Error('Type \"' + type + '\" not yet supported');\r\n }\r\n this.bufferBuilder.flush();\r\n};\r\n\r\nPacker.prototype.pack_bin = function (blob) {\r\n var length = blob.length || blob.byteLength || blob.size;\r\n if (length <= 0x0f) {\r\n this.pack_uint8(0xa0 + length);\r\n } else if (length <= 0xffff) {\r\n this.bufferBuilder.append(0xda);\r\n this.pack_uint16(length);\r\n } else if (length <= 0xffffffff) {\r\n this.bufferBuilder.append(0xdb);\r\n this.pack_uint32(length);\r\n } else {\r\n throw new Error('Invalid length');\r\n }\r\n this.bufferBuilder.append(blob);\r\n};\r\n\r\nPacker.prototype.pack_string = function (str) {\r\n var length = utf8Length(str);\r\n\r\n if (length <= 0x0f) {\r\n this.pack_uint8(0xb0 + length);\r\n } else if (length <= 0xffff) {\r\n this.bufferBuilder.append(0xd8);\r\n this.pack_uint16(length);\r\n } else if (length <= 0xffffffff) {\r\n this.bufferBuilder.append(0xd9);\r\n this.pack_uint32(length);\r\n } else {\r\n throw new Error('Invalid length');\r\n }\r\n this.bufferBuilder.append(str);\r\n};\r\n\r\nPacker.prototype.pack_array = function (ary) {\r\n var length = ary.length;\r\n if (length <= 0x0f) {\r\n this.pack_uint8(0x90 + length);\r\n } else if (length <= 0xffff) {\r\n this.bufferBuilder.append(0xdc);\r\n this.pack_uint16(length);\r\n } else if (length <= 0xffffffff) {\r\n this.bufferBuilder.append(0xdd);\r\n this.pack_uint32(length);\r\n } else {\r\n throw new Error('Invalid length');\r\n }\r\n for (var i = 0; i < length; i++) {\r\n this.pack(ary[i]);\r\n }\r\n};\r\n\r\nPacker.prototype.pack_integer = function (num) {\r\n if (num >= -0x20 && num <= 0x7f) {\r\n this.bufferBuilder.append(num & 0xff);\r\n } else if (num >= 0x00 && num <= 0xff) {\r\n this.bufferBuilder.append(0xcc);\r\n this.pack_uint8(num);\r\n } else if (num >= -0x80 && num <= 0x7f) {\r\n this.bufferBuilder.append(0xd0);\r\n this.pack_int8(num);\r\n } else if (num >= 0x0000 && num <= 0xffff) {\r\n this.bufferBuilder.append(0xcd);\r\n this.pack_uint16(num);\r\n } else if (num >= -0x8000 && num <= 0x7fff) {\r\n this.bufferBuilder.append(0xd1);\r\n this.pack_int16(num);\r\n } else if (num >= 0x00000000 && num <= 0xffffffff) {\r\n this.bufferBuilder.append(0xce);\r\n this.pack_uint32(num);\r\n } else if (num >= -0x80000000 && num <= 0x7fffffff) {\r\n this.bufferBuilder.append(0xd2);\r\n this.pack_int32(num);\r\n } else if (num >= -0x8000000000000000 && num <= 0x7FFFFFFFFFFFFFFF) {\r\n this.bufferBuilder.append(0xd3);\r\n this.pack_int64(num);\r\n } else if (num >= 0x0000000000000000 && num <= 0xFFFFFFFFFFFFFFFF) {\r\n this.bufferBuilder.append(0xcf);\r\n this.pack_uint64(num);\r\n } else {\r\n throw new Error('Invalid integer');\r\n }\r\n};\r\n\r\nPacker.prototype.pack_double = function (num) {\r\n var sign = 0;\r\n if (num < 0) {\r\n sign = 1;\r\n num = -num;\r\n }\r\n var exp = Math.floor(Math.log(num) / Math.LN2);\r\n var frac0 = num / Math.pow(2, exp) - 1;\r\n var frac1 = Math.floor(frac0 * Math.pow(2, 52));\r\n var b32 = Math.pow(2, 32);\r\n var h32 = (sign << 31) | ((exp + 1023) << 20) |\r\n (frac1 / b32) & 0x0fffff;\r\n var l32 = frac1 % b32;\r\n this.bufferBuilder.append(0xcb);\r\n this.pack_int32(h32);\r\n this.pack_int32(l32);\r\n};\r\n\r\nPacker.prototype.pack_object = function (obj) {\r\n var keys = Object.keys(obj);\r\n var length = keys.length;\r\n if (length <= 0x0f) {\r\n this.pack_uint8(0x80 + length);\r\n } else if (length <= 0xffff) {\r\n this.bufferBuilder.append(0xde);\r\n this.pack_uint16(length);\r\n } else if (length <= 0xffffffff) {\r\n this.bufferBuilder.append(0xdf);\r\n this.pack_uint32(length);\r\n } else {\r\n throw new Error('Invalid length');\r\n }\r\n for (var prop in obj) {\r\n if (obj.hasOwnProperty(prop)) {\r\n this.pack(prop);\r\n this.pack(obj[prop]);\r\n }\r\n }\r\n};\r\n\r\nPacker.prototype.pack_uint8 = function (num) {\r\n this.bufferBuilder.append(num);\r\n};\r\n\r\nPacker.prototype.pack_uint16 = function (num) {\r\n this.bufferBuilder.append(num >> 8);\r\n this.bufferBuilder.append(num & 0xff);\r\n};\r\n\r\nPacker.prototype.pack_uint32 = function (num) {\r\n var n = num & 0xffffffff;\r\n this.bufferBuilder.append((n & 0xff000000) >>> 24);\r\n this.bufferBuilder.append((n & 0x00ff0000) >>> 16);\r\n this.bufferBuilder.append((n & 0x0000ff00) >>> 8);\r\n this.bufferBuilder.append((n & 0x000000ff));\r\n};\r\n\r\nPacker.prototype.pack_uint64 = function (num) {\r\n var high = num / Math.pow(2, 32);\r\n var low = num % Math.pow(2, 32);\r\n this.bufferBuilder.append((high & 0xff000000) >>> 24);\r\n this.bufferBuilder.append((high & 0x00ff0000) >>> 16);\r\n this.bufferBuilder.append((high & 0x0000ff00) >>> 8);\r\n this.bufferBuilder.append((high & 0x000000ff));\r\n this.bufferBuilder.append((low & 0xff000000) >>> 24);\r\n this.bufferBuilder.append((low & 0x00ff0000) >>> 16);\r\n this.bufferBuilder.append((low & 0x0000ff00) >>> 8);\r\n this.bufferBuilder.append((low & 0x000000ff));\r\n};\r\n\r\nPacker.prototype.pack_int8 = function (num) {\r\n this.bufferBuilder.append(num & 0xff);\r\n};\r\n\r\nPacker.prototype.pack_int16 = function (num) {\r\n this.bufferBuilder.append((num & 0xff00) >> 8);\r\n this.bufferBuilder.append(num & 0xff);\r\n};\r\n\r\nPacker.prototype.pack_int32 = function (num) {\r\n this.bufferBuilder.append((num >>> 24) & 0xff);\r\n this.bufferBuilder.append((num & 0x00ff0000) >>> 16);\r\n this.bufferBuilder.append((num & 0x0000ff00) >>> 8);\r\n this.bufferBuilder.append((num & 0x000000ff));\r\n};\r\n\r\nPacker.prototype.pack_int64 = function (num) {\r\n var high = Math.floor(num / Math.pow(2, 32));\r\n var low = num % Math.pow(2, 32);\r\n this.bufferBuilder.append((high & 0xff000000) >>> 24);\r\n this.bufferBuilder.append((high & 0x00ff0000) >>> 16);\r\n this.bufferBuilder.append((high & 0x0000ff00) >>> 8);\r\n this.bufferBuilder.append((high & 0x000000ff));\r\n this.bufferBuilder.append((low & 0xff000000) >>> 24);\r\n this.bufferBuilder.append((low & 0x00ff0000) >>> 16);\r\n this.bufferBuilder.append((low & 0x0000ff00) >>> 8);\r\n this.bufferBuilder.append((low & 0x000000ff));\r\n};\r\n\r\nfunction _utf8Replace (m) {\r\n var code = m.charCodeAt(0);\r\n\r\n if (code <= 0x7ff) return '00';\r\n if (code <= 0xffff) return '000';\r\n if (code <= 0x1fffff) return '0000';\r\n if (code <= 0x3ffffff) return '00000';\r\n return '000000';\r\n}\r\n\r\nfunction utf8Length (str) {\r\n if (str.length > 600) {\r\n // Blob method faster for large strings\r\n return (new Blob([str])).size;\r\n } else {\r\n return str.replace(/[^\\u0000-\\u007F]/g, _utf8Replace).length;\r\n }\r\n}\r\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n /* eslint-env node */\n'use strict';\n\nlet logDisabled_ = true;\nlet deprecationWarnings_ = true;\n\n/**\n * Extract browser version out of the provided user agent string.\n *\n * @param {!string} uastring userAgent string.\n * @param {!string} expr Regular expression used as match criteria.\n * @param {!number} pos position in the version string to be returned.\n * @return {!number} browser version.\n */\nexport function extractVersion(uastring, expr, pos) {\n const match = uastring.match(expr);\n return match && match.length >= pos && parseInt(match[pos], 10);\n}\n\n// Wraps the peerconnection event eventNameToWrap in a function\n// which returns the modified event object (or false to prevent\n// the event).\nexport function wrapPeerConnectionEvent(window, eventNameToWrap, wrapper) {\n if (!window.RTCPeerConnection) {\n return;\n }\n const proto = window.RTCPeerConnection.prototype;\n const nativeAddEventListener = proto.addEventListener;\n proto.addEventListener = function(nativeEventName, cb) {\n if (nativeEventName !== eventNameToWrap) {\n return nativeAddEventListener.apply(this, arguments);\n }\n const wrappedCallback = (e) => {\n const modifiedEvent = wrapper(e);\n if (modifiedEvent) {\n if (cb.handleEvent) {\n cb.handleEvent(modifiedEvent);\n } else {\n cb(modifiedEvent);\n }\n }\n };\n this._eventMap = this._eventMap || {};\n if (!this._eventMap[eventNameToWrap]) {\n this._eventMap[eventNameToWrap] = new Map();\n }\n this._eventMap[eventNameToWrap].set(cb, wrappedCallback);\n return nativeAddEventListener.apply(this, [nativeEventName,\n wrappedCallback]);\n };\n\n const nativeRemoveEventListener = proto.removeEventListener;\n proto.removeEventListener = function(nativeEventName, cb) {\n if (nativeEventName !== eventNameToWrap || !this._eventMap\n || !this._eventMap[eventNameToWrap]) {\n return nativeRemoveEventListener.apply(this, arguments);\n }\n if (!this._eventMap[eventNameToWrap].has(cb)) {\n return nativeRemoveEventListener.apply(this, arguments);\n }\n const unwrappedCb = this._eventMap[eventNameToWrap].get(cb);\n this._eventMap[eventNameToWrap].delete(cb);\n if (this._eventMap[eventNameToWrap].size === 0) {\n delete this._eventMap[eventNameToWrap];\n }\n if (Object.keys(this._eventMap).length === 0) {\n delete this._eventMap;\n }\n return nativeRemoveEventListener.apply(this, [nativeEventName,\n unwrappedCb]);\n };\n\n Object.defineProperty(proto, 'on' + eventNameToWrap, {\n get() {\n return this['_on' + eventNameToWrap];\n },\n set(cb) {\n if (this['_on' + eventNameToWrap]) {\n this.removeEventListener(eventNameToWrap,\n this['_on' + eventNameToWrap]);\n delete this['_on' + eventNameToWrap];\n }\n if (cb) {\n this.addEventListener(eventNameToWrap,\n this['_on' + eventNameToWrap] = cb);\n }\n },\n enumerable: true,\n configurable: true\n });\n}\n\nexport function disableLog(bool) {\n if (typeof bool !== 'boolean') {\n return new Error('Argument type: ' + typeof bool +\n '. Please use a boolean.');\n }\n logDisabled_ = bool;\n return (bool) ? 'adapter.js logging disabled' :\n 'adapter.js logging enabled';\n}\n\n/**\n * Disable or enable deprecation warnings\n * @param {!boolean} bool set to true to disable warnings.\n */\nexport function disableWarnings(bool) {\n if (typeof bool !== 'boolean') {\n return new Error('Argument type: ' + typeof bool +\n '. Please use a boolean.');\n }\n deprecationWarnings_ = !bool;\n return 'adapter.js deprecation warnings ' + (bool ? 'disabled' : 'enabled');\n}\n\nexport function log() {\n if (typeof window === 'object') {\n if (logDisabled_) {\n return;\n }\n if (typeof console !== 'undefined' && typeof console.log === 'function') {\n console.log.apply(console, arguments);\n }\n }\n}\n\n/**\n * Shows a deprecation warning suggesting the modern and spec-compatible API.\n */\nexport function deprecated(oldMethod, newMethod) {\n if (!deprecationWarnings_) {\n return;\n }\n console.warn(oldMethod + ' is deprecated, please use ' + newMethod +\n ' instead.');\n}\n\n/**\n * Browser detector.\n *\n * @return {object} result containing browser and version\n * properties.\n */\nexport function detectBrowser(window) {\n // Returned result object.\n const result = {browser: null, version: null};\n\n // Fail early if it's not a browser\n if (typeof window === 'undefined' || !window.navigator) {\n result.browser = 'Not a browser.';\n return result;\n }\n\n const {navigator} = window;\n\n if (navigator.mozGetUserMedia) { // Firefox.\n result.browser = 'firefox';\n result.version = extractVersion(navigator.userAgent,\n /Firefox\\/(\\d+)\\./, 1);\n } else if (navigator.webkitGetUserMedia ||\n (window.isSecureContext === false && window.webkitRTCPeerConnection &&\n !window.RTCIceGatherer)) {\n // Chrome, Chromium, Webview, Opera.\n // Version matches Chrome/WebRTC version.\n // Chrome 74 removed webkitGetUserMedia on http as well so we need the\n // more complicated fallback to webkitRTCPeerConnection.\n result.browser = 'chrome';\n result.version = extractVersion(navigator.userAgent,\n /Chrom(e|ium)\\/(\\d+)\\./, 2);\n } else if (navigator.mediaDevices &&\n navigator.userAgent.match(/Edge\\/(\\d+).(\\d+)$/)) { // Edge.\n result.browser = 'edge';\n result.version = extractVersion(navigator.userAgent,\n /Edge\\/(\\d+).(\\d+)$/, 2);\n } else if (window.RTCPeerConnection &&\n navigator.userAgent.match(/AppleWebKit\\/(\\d+)\\./)) { // Safari.\n result.browser = 'safari';\n result.version = extractVersion(navigator.userAgent,\n /AppleWebKit\\/(\\d+)\\./, 1);\n result.supportsUnifiedPlan = window.RTCRtpTransceiver &&\n 'currentDirection' in window.RTCRtpTransceiver.prototype;\n } else { // Default fallthrough: not supported.\n result.browser = 'Not a supported browser.';\n return result;\n }\n\n return result;\n}\n\n/**\n * Checks if something is an object.\n *\n * @param {*} val The something you want to check.\n * @return true if val is an object, false otherwise.\n */\nfunction isObject(val) {\n return Object.prototype.toString.call(val) === '[object Object]';\n}\n\n/**\n * Remove all empty objects and undefined values\n * from a nested object -- an enhanced and vanilla version\n * of Lodash's `compact`.\n */\nexport function compactObject(data) {\n if (!isObject(data)) {\n return data;\n }\n\n return Object.keys(data).reduce(function(accumulator, key) {\n const isObj = isObject(data[key]);\n const value = isObj ? compactObject(data[key]) : data[key];\n const isEmptyObject = isObj && !Object.keys(value).length;\n if (value === undefined || isEmptyObject) {\n return accumulator;\n }\n return Object.assign(accumulator, {[key]: value});\n }, {});\n}\n\n/* iterates the stats graph recursively. */\nexport function walkStats(stats, base, resultSet) {\n if (!base || resultSet.has(base.id)) {\n return;\n }\n resultSet.set(base.id, base);\n Object.keys(base).forEach(name => {\n if (name.endsWith('Id')) {\n walkStats(stats, stats.get(base[name]), resultSet);\n } else if (name.endsWith('Ids')) {\n base[name].forEach(id => {\n walkStats(stats, stats.get(id), resultSet);\n });\n }\n });\n}\n\n/* filter getStats for a sender/receiver track. */\nexport function filterStats(result, track, outbound) {\n const streamStatsType = outbound ? 'outbound-rtp' : 'inbound-rtp';\n const filteredResult = new Map();\n if (track === null) {\n return filteredResult;\n }\n const trackStats = [];\n result.forEach(value => {\n if (value.type === 'track' &&\n value.trackIdentifier === track.id) {\n trackStats.push(value);\n }\n });\n trackStats.forEach(trackStat => {\n result.forEach(stats => {\n if (stats.type === streamStatsType && stats.trackId === trackStat.id) {\n walkStats(result, stats, filteredResult);\n }\n });\n });\n return filteredResult;\n}\n\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\nimport * as utils from '../utils.js';\nconst logging = utils.log;\n\nexport function shimGetUserMedia(window, browserDetails) {\n const navigator = window && window.navigator;\n\n if (!navigator.mediaDevices) {\n return;\n }\n\n const constraintsToChrome_ = function(c) {\n if (typeof c !== 'object' || c.mandatory || c.optional) {\n return c;\n }\n const cc = {};\n Object.keys(c).forEach(key => {\n if (key === 'require' || key === 'advanced' || key === 'mediaSource') {\n return;\n }\n const r = (typeof c[key] === 'object') ? c[key] : {ideal: c[key]};\n if (r.exact !== undefined && typeof r.exact === 'number') {\n r.min = r.max = r.exact;\n }\n const oldname_ = function(prefix, name) {\n if (prefix) {\n return prefix + name.charAt(0).toUpperCase() + name.slice(1);\n }\n return (name === 'deviceId') ? 'sourceId' : name;\n };\n if (r.ideal !== undefined) {\n cc.optional = cc.optional || [];\n let oc = {};\n if (typeof r.ideal === 'number') {\n oc[oldname_('min', key)] = r.ideal;\n cc.optional.push(oc);\n oc = {};\n oc[oldname_('max', key)] = r.ideal;\n cc.optional.push(oc);\n } else {\n oc[oldname_('', key)] = r.ideal;\n cc.optional.push(oc);\n }\n }\n if (r.exact !== undefined && typeof r.exact !== 'number') {\n cc.mandatory = cc.mandatory || {};\n cc.mandatory[oldname_('', key)] = r.exact;\n } else {\n ['min', 'max'].forEach(mix => {\n if (r[mix] !== undefined) {\n cc.mandatory = cc.mandatory || {};\n cc.mandatory[oldname_(mix, key)] = r[mix];\n }\n });\n }\n });\n if (c.advanced) {\n cc.optional = (cc.optional || []).concat(c.advanced);\n }\n return cc;\n };\n\n const shimConstraints_ = function(constraints, func) {\n if (browserDetails.version >= 61) {\n return func(constraints);\n }\n constraints = JSON.parse(JSON.stringify(constraints));\n if (constraints && typeof constraints.audio === 'object') {\n const remap = function(obj, a, b) {\n if (a in obj && !(b in obj)) {\n obj[b] = obj[a];\n delete obj[a];\n }\n };\n constraints = JSON.parse(JSON.stringify(constraints));\n remap(constraints.audio, 'autoGainControl', 'googAutoGainControl');\n remap(constraints.audio, 'noiseSuppression', 'googNoiseSuppression');\n constraints.audio = constraintsToChrome_(constraints.audio);\n }\n if (constraints && typeof constraints.video === 'object') {\n // Shim facingMode for mobile & surface pro.\n let face = constraints.video.facingMode;\n face = face && ((typeof face === 'object') ? face : {ideal: face});\n const getSupportedFacingModeLies = browserDetails.version < 66;\n\n if ((face && (face.exact === 'user' || face.exact === 'environment' ||\n face.ideal === 'user' || face.ideal === 'environment')) &&\n !(navigator.mediaDevices.getSupportedConstraints &&\n navigator.mediaDevices.getSupportedConstraints().facingMode &&\n !getSupportedFacingModeLies)) {\n delete constraints.video.facingMode;\n let matches;\n if (face.exact === 'environment' || face.ideal === 'environment') {\n matches = ['back', 'rear'];\n } else if (face.exact === 'user' || face.ideal === 'user') {\n matches = ['front'];\n }\n if (matches) {\n // Look for matches in label, or use last cam for back (typical).\n return navigator.mediaDevices.enumerateDevices()\n .then(devices => {\n devices = devices.filter(d => d.kind === 'videoinput');\n let dev = devices.find(d => matches.some(match =>\n d.label.toLowerCase().includes(match)));\n if (!dev && devices.length && matches.includes('back')) {\n dev = devices[devices.length - 1]; // more likely the back cam\n }\n if (dev) {\n constraints.video.deviceId = face.exact ? {exact: dev.deviceId} :\n {ideal: dev.deviceId};\n }\n constraints.video = constraintsToChrome_(constraints.video);\n logging('chrome: ' + JSON.stringify(constraints));\n return func(constraints);\n });\n }\n }\n constraints.video = constraintsToChrome_(constraints.video);\n }\n logging('chrome: ' + JSON.stringify(constraints));\n return func(constraints);\n };\n\n const shimError_ = function(e) {\n if (browserDetails.version >= 64) {\n return e;\n }\n return {\n name: {\n PermissionDeniedError: 'NotAllowedError',\n PermissionDismissedError: 'NotAllowedError',\n InvalidStateError: 'NotAllowedError',\n DevicesNotFoundError: 'NotFoundError',\n ConstraintNotSatisfiedError: 'OverconstrainedError',\n TrackStartError: 'NotReadableError',\n MediaDeviceFailedDueToShutdown: 'NotAllowedError',\n MediaDeviceKillSwitchOn: 'NotAllowedError',\n TabCaptureError: 'AbortError',\n ScreenCaptureError: 'AbortError',\n DeviceCaptureError: 'AbortError'\n }[e.name] || e.name,\n message: e.message,\n constraint: e.constraint || e.constraintName,\n toString() {\n return this.name + (this.message && ': ') + this.message;\n }\n };\n };\n\n const getUserMedia_ = function(constraints, onSuccess, onError) {\n shimConstraints_(constraints, c => {\n navigator.webkitGetUserMedia(c, onSuccess, e => {\n if (onError) {\n onError(shimError_(e));\n }\n });\n });\n };\n navigator.getUserMedia = getUserMedia_.bind(navigator);\n\n // Even though Chrome 45 has navigator.mediaDevices and a getUserMedia\n // function which returns a Promise, it does not accept spec-style\n // constraints.\n if (navigator.mediaDevices.getUserMedia) {\n const origGetUserMedia = navigator.mediaDevices.getUserMedia.\n bind(navigator.mediaDevices);\n navigator.mediaDevices.getUserMedia = function(cs) {\n return shimConstraints_(cs, c => origGetUserMedia(c).then(stream => {\n if (c.audio && !stream.getAudioTracks().length ||\n c.video && !stream.getVideoTracks().length) {\n stream.getTracks().forEach(track => {\n track.stop();\n });\n throw new DOMException('', 'NotFoundError');\n }\n return stream;\n }, e => Promise.reject(shimError_(e))));\n };\n }\n}\n","/*\n * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\nexport function shimGetDisplayMedia(window, getSourceId) {\n if (window.navigator.mediaDevices &&\n 'getDisplayMedia' in window.navigator.mediaDevices) {\n return;\n }\n if (!(window.navigator.mediaDevices)) {\n return;\n }\n // getSourceId is a function that returns a promise resolving with\n // the sourceId of the screen/window/tab to be shared.\n if (typeof getSourceId !== 'function') {\n console.error('shimGetDisplayMedia: getSourceId argument is not ' +\n 'a function');\n return;\n }\n window.navigator.mediaDevices.getDisplayMedia =\n function getDisplayMedia(constraints) {\n return getSourceId(constraints)\n .then(sourceId => {\n const widthSpecified = constraints.video && constraints.video.width;\n const heightSpecified = constraints.video &&\n constraints.video.height;\n const frameRateSpecified = constraints.video &&\n constraints.video.frameRate;\n constraints.video = {\n mandatory: {\n chromeMediaSource: 'desktop',\n chromeMediaSourceId: sourceId,\n maxFrameRate: frameRateSpecified || 3\n }\n };\n if (widthSpecified) {\n constraints.video.mandatory.maxWidth = widthSpecified;\n }\n if (heightSpecified) {\n constraints.video.mandatory.maxHeight = heightSpecified;\n }\n return window.navigator.mediaDevices.getUserMedia(constraints);\n });\n };\n}\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n /* eslint-env node */\n'use strict';\nimport * as utils from '../utils.js';\n\nexport {shimGetUserMedia} from './getusermedia';\nexport {shimGetDisplayMedia} from './getdisplaymedia';\n\nexport function shimMediaStream(window) {\n window.MediaStream = window.MediaStream || window.webkitMediaStream;\n}\n\nexport function shimOnTrack(window) {\n if (typeof window === 'object' && window.RTCPeerConnection && !('ontrack' in\n window.RTCPeerConnection.prototype)) {\n Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', {\n get() {\n return this._ontrack;\n },\n set(f) {\n if (this._ontrack) {\n this.removeEventListener('track', this._ontrack);\n }\n this.addEventListener('track', this._ontrack = f);\n },\n enumerable: true,\n configurable: true\n });\n const origSetRemoteDescription =\n window.RTCPeerConnection.prototype.setRemoteDescription;\n window.RTCPeerConnection.prototype.setRemoteDescription =\n function setRemoteDescription() {\n if (!this._ontrackpoly) {\n this._ontrackpoly = (e) => {\n // onaddstream does not fire when a track is added to an existing\n // stream. But stream.onaddtrack is implemented so we use that.\n e.stream.addEventListener('addtrack', te => {\n let receiver;\n if (window.RTCPeerConnection.prototype.getReceivers) {\n receiver = this.getReceivers()\n .find(r => r.track && r.track.id === te.track.id);\n } else {\n receiver = {track: te.track};\n }\n\n const event = new Event('track');\n event.track = te.track;\n event.receiver = receiver;\n event.transceiver = {receiver};\n event.streams = [e.stream];\n this.dispatchEvent(event);\n });\n e.stream.getTracks().forEach(track => {\n let receiver;\n if (window.RTCPeerConnection.prototype.getReceivers) {\n receiver = this.getReceivers()\n .find(r => r.track && r.track.id === track.id);\n } else {\n receiver = {track};\n }\n const event = new Event('track');\n event.track = track;\n event.receiver = receiver;\n event.transceiver = {receiver};\n event.streams = [e.stream];\n this.dispatchEvent(event);\n });\n };\n this.addEventListener('addstream', this._ontrackpoly);\n }\n return origSetRemoteDescription.apply(this, arguments);\n };\n } else {\n // even if RTCRtpTransceiver is in window, it is only used and\n // emitted in unified-plan. Unfortunately this means we need\n // to unconditionally wrap the event.\n utils.wrapPeerConnectionEvent(window, 'track', e => {\n if (!e.transceiver) {\n Object.defineProperty(e, 'transceiver',\n {value: {receiver: e.receiver}});\n }\n return e;\n });\n }\n}\n\nexport function shimGetSendersWithDtmf(window) {\n // Overrides addTrack/removeTrack, depends on shimAddTrackRemoveTrack.\n if (typeof window === 'object' && window.RTCPeerConnection &&\n !('getSenders' in window.RTCPeerConnection.prototype) &&\n 'createDTMFSender' in window.RTCPeerConnection.prototype) {\n const shimSenderWithDtmf = function(pc, track) {\n return {\n track,\n get dtmf() {\n if (this._dtmf === undefined) {\n if (track.kind === 'audio') {\n this._dtmf = pc.createDTMFSender(track);\n } else {\n this._dtmf = null;\n }\n }\n return this._dtmf;\n },\n _pc: pc\n };\n };\n\n // augment addTrack when getSenders is not available.\n if (!window.RTCPeerConnection.prototype.getSenders) {\n window.RTCPeerConnection.prototype.getSenders = function getSenders() {\n this._senders = this._senders || [];\n return this._senders.slice(); // return a copy of the internal state.\n };\n const origAddTrack = window.RTCPeerConnection.prototype.addTrack;\n window.RTCPeerConnection.prototype.addTrack =\n function addTrack(track, stream) {\n let sender = origAddTrack.apply(this, arguments);\n if (!sender) {\n sender = shimSenderWithDtmf(this, track);\n this._senders.push(sender);\n }\n return sender;\n };\n\n const origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;\n window.RTCPeerConnection.prototype.removeTrack =\n function removeTrack(sender) {\n origRemoveTrack.apply(this, arguments);\n const idx = this._senders.indexOf(sender);\n if (idx !== -1) {\n this._senders.splice(idx, 1);\n }\n };\n }\n const origAddStream = window.RTCPeerConnection.prototype.addStream;\n window.RTCPeerConnection.prototype.addStream = function addStream(stream) {\n this._senders = this._senders || [];\n origAddStream.apply(this, [stream]);\n stream.getTracks().forEach(track => {\n this._senders.push(shimSenderWithDtmf(this, track));\n });\n };\n\n const origRemoveStream = window.RTCPeerConnection.prototype.removeStream;\n window.RTCPeerConnection.prototype.removeStream =\n function removeStream(stream) {\n this._senders = this._senders || [];\n origRemoveStream.apply(this, [stream]);\n\n stream.getTracks().forEach(track => {\n const sender = this._senders.find(s => s.track === track);\n if (sender) { // remove sender\n this._senders.splice(this._senders.indexOf(sender), 1);\n }\n });\n };\n } else if (typeof window === 'object' && window.RTCPeerConnection &&\n 'getSenders' in window.RTCPeerConnection.prototype &&\n 'createDTMFSender' in window.RTCPeerConnection.prototype &&\n window.RTCRtpSender &&\n !('dtmf' in window.RTCRtpSender.prototype)) {\n const origGetSenders = window.RTCPeerConnection.prototype.getSenders;\n window.RTCPeerConnection.prototype.getSenders = function getSenders() {\n const senders = origGetSenders.apply(this, []);\n senders.forEach(sender => sender._pc = this);\n return senders;\n };\n\n Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', {\n get() {\n if (this._dtmf === undefined) {\n if (this.track.kind === 'audio') {\n this._dtmf = this._pc.createDTMFSender(this.track);\n } else {\n this._dtmf = null;\n }\n }\n return this._dtmf;\n }\n });\n }\n}\n\nexport function shimGetStats(window) {\n if (!window.RTCPeerConnection) {\n return;\n }\n\n const origGetStats = window.RTCPeerConnection.prototype.getStats;\n window.RTCPeerConnection.prototype.getStats = function getStats() {\n const [selector, onSucc, onErr] = arguments;\n\n // If selector is a function then we are in the old style stats so just\n // pass back the original getStats format to avoid breaking old users.\n if (arguments.length > 0 && typeof selector === 'function') {\n return origGetStats.apply(this, arguments);\n }\n\n // When spec-style getStats is supported, return those when called with\n // either no arguments or the selector argument is null.\n if (origGetStats.length === 0 && (arguments.length === 0 ||\n typeof selector !== 'function')) {\n return origGetStats.apply(this, []);\n }\n\n const fixChromeStats_ = function(response) {\n const standardReport = {};\n const reports = response.result();\n reports.forEach(report => {\n const standardStats = {\n id: report.id,\n timestamp: report.timestamp,\n type: {\n localcandidate: 'local-candidate',\n remotecandidate: 'remote-candidate'\n }[report.type] || report.type\n };\n report.names().forEach(name => {\n standardStats[name] = report.stat(name);\n });\n standardReport[standardStats.id] = standardStats;\n });\n\n return standardReport;\n };\n\n // shim getStats with maplike support\n const makeMapStats = function(stats) {\n return new Map(Object.keys(stats).map(key => [key, stats[key]]));\n };\n\n if (arguments.length >= 2) {\n const successCallbackWrapper_ = function(response) {\n onSucc(makeMapStats(fixChromeStats_(response)));\n };\n\n return origGetStats.apply(this, [successCallbackWrapper_,\n selector]);\n }\n\n // promise-support\n return new Promise((resolve, reject) => {\n origGetStats.apply(this, [\n function(response) {\n resolve(makeMapStats(fixChromeStats_(response)));\n }, reject]);\n }).then(onSucc, onErr);\n };\n}\n\nexport function shimSenderReceiverGetStats(window) {\n if (!(typeof window === 'object' && window.RTCPeerConnection &&\n window.RTCRtpSender && window.RTCRtpReceiver)) {\n return;\n }\n\n // shim sender stats.\n if (!('getStats' in window.RTCRtpSender.prototype)) {\n const origGetSenders = window.RTCPeerConnection.prototype.getSenders;\n if (origGetSenders) {\n window.RTCPeerConnection.prototype.getSenders = function getSenders() {\n const senders = origGetSenders.apply(this, []);\n senders.forEach(sender => sender._pc = this);\n return senders;\n };\n }\n\n const origAddTrack = window.RTCPeerConnection.prototype.addTrack;\n if (origAddTrack) {\n window.RTCPeerConnection.prototype.addTrack = function addTrack() {\n const sender = origAddTrack.apply(this, arguments);\n sender._pc = this;\n return sender;\n };\n }\n window.RTCRtpSender.prototype.getStats = function getStats() {\n const sender = this;\n return this._pc.getStats().then(result =>\n /* Note: this will include stats of all senders that\n * send a track with the same id as sender.track as\n * it is not possible to identify the RTCRtpSender.\n */\n utils.filterStats(result, sender.track, true));\n };\n }\n\n // shim receiver stats.\n if (!('getStats' in window.RTCRtpReceiver.prototype)) {\n const origGetReceivers = window.RTCPeerConnection.prototype.getReceivers;\n if (origGetReceivers) {\n window.RTCPeerConnection.prototype.getReceivers =\n function getReceivers() {\n const receivers = origGetReceivers.apply(this, []);\n receivers.forEach(receiver => receiver._pc = this);\n return receivers;\n };\n }\n utils.wrapPeerConnectionEvent(window, 'track', e => {\n e.receiver._pc = e.srcElement;\n return e;\n });\n window.RTCRtpReceiver.prototype.getStats = function getStats() {\n const receiver = this;\n return this._pc.getStats().then(result =>\n utils.filterStats(result, receiver.track, false));\n };\n }\n\n if (!('getStats' in window.RTCRtpSender.prototype &&\n 'getStats' in window.RTCRtpReceiver.prototype)) {\n return;\n }\n\n // shim RTCPeerConnection.getStats(track).\n const origGetStats = window.RTCPeerConnection.prototype.getStats;\n window.RTCPeerConnection.prototype.getStats = function getStats() {\n if (arguments.length > 0 &&\n arguments[0] instanceof window.MediaStreamTrack) {\n const track = arguments[0];\n let sender;\n let receiver;\n let err;\n this.getSenders().forEach(s => {\n if (s.track === track) {\n if (sender) {\n err = true;\n } else {\n sender = s;\n }\n }\n });\n this.getReceivers().forEach(r => {\n if (r.track === track) {\n if (receiver) {\n err = true;\n } else {\n receiver = r;\n }\n }\n return r.track === track;\n });\n if (err || (sender && receiver)) {\n return Promise.reject(new DOMException(\n 'There are more than one sender or receiver for the track.',\n 'InvalidAccessError'));\n } else if (sender) {\n return sender.getStats();\n } else if (receiver) {\n return receiver.getStats();\n }\n return Promise.reject(new DOMException(\n 'There is no sender or receiver for the track.',\n 'InvalidAccessError'));\n }\n return origGetStats.apply(this, arguments);\n };\n}\n\nexport function shimAddTrackRemoveTrackWithNative(window) {\n // shim addTrack/removeTrack with native variants in order to make\n // the interactions with legacy getLocalStreams behave as in other browsers.\n // Keeps a mapping stream.id => [stream, rtpsenders...]\n window.RTCPeerConnection.prototype.getLocalStreams =\n function getLocalStreams() {\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n return Object.keys(this._shimmedLocalStreams)\n .map(streamId => this._shimmedLocalStreams[streamId][0]);\n };\n\n const origAddTrack = window.RTCPeerConnection.prototype.addTrack;\n window.RTCPeerConnection.prototype.addTrack =\n function addTrack(track, stream) {\n if (!stream) {\n return origAddTrack.apply(this, arguments);\n }\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n\n const sender = origAddTrack.apply(this, arguments);\n if (!this._shimmedLocalStreams[stream.id]) {\n this._shimmedLocalStreams[stream.id] = [stream, sender];\n } else if (this._shimmedLocalStreams[stream.id].indexOf(sender) === -1) {\n this._shimmedLocalStreams[stream.id].push(sender);\n }\n return sender;\n };\n\n const origAddStream = window.RTCPeerConnection.prototype.addStream;\n window.RTCPeerConnection.prototype.addStream = function addStream(stream) {\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n\n stream.getTracks().forEach(track => {\n const alreadyExists = this.getSenders().find(s => s.track === track);\n if (alreadyExists) {\n throw new DOMException('Track already exists.',\n 'InvalidAccessError');\n }\n });\n const existingSenders = this.getSenders();\n origAddStream.apply(this, arguments);\n const newSenders = this.getSenders()\n .filter(newSender => existingSenders.indexOf(newSender) === -1);\n this._shimmedLocalStreams[stream.id] = [stream].concat(newSenders);\n };\n\n const origRemoveStream = window.RTCPeerConnection.prototype.removeStream;\n window.RTCPeerConnection.prototype.removeStream =\n function removeStream(stream) {\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n delete this._shimmedLocalStreams[stream.id];\n return origRemoveStream.apply(this, arguments);\n };\n\n const origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;\n window.RTCPeerConnection.prototype.removeTrack =\n function removeTrack(sender) {\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n if (sender) {\n Object.keys(this._shimmedLocalStreams).forEach(streamId => {\n const idx = this._shimmedLocalStreams[streamId].indexOf(sender);\n if (idx !== -1) {\n this._shimmedLocalStreams[streamId].splice(idx, 1);\n }\n if (this._shimmedLocalStreams[streamId].length === 1) {\n delete this._shimmedLocalStreams[streamId];\n }\n });\n }\n return origRemoveTrack.apply(this, arguments);\n };\n}\n\nexport function shimAddTrackRemoveTrack(window, browserDetails) {\n if (!window.RTCPeerConnection) {\n return;\n }\n // shim addTrack and removeTrack.\n if (window.RTCPeerConnection.prototype.addTrack &&\n browserDetails.version >= 65) {\n return shimAddTrackRemoveTrackWithNative(window);\n }\n\n // also shim pc.getLocalStreams when addTrack is shimmed\n // to return the original streams.\n const origGetLocalStreams = window.RTCPeerConnection.prototype\n .getLocalStreams;\n window.RTCPeerConnection.prototype.getLocalStreams =\n function getLocalStreams() {\n const nativeStreams = origGetLocalStreams.apply(this);\n this._reverseStreams = this._reverseStreams || {};\n return nativeStreams.map(stream => this._reverseStreams[stream.id]);\n };\n\n const origAddStream = window.RTCPeerConnection.prototype.addStream;\n window.RTCPeerConnection.prototype.addStream = function addStream(stream) {\n this._streams = this._streams || {};\n this._reverseStreams = this._reverseStreams || {};\n\n stream.getTracks().forEach(track => {\n const alreadyExists = this.getSenders().find(s => s.track === track);\n if (alreadyExists) {\n throw new DOMException('Track already exists.',\n 'InvalidAccessError');\n }\n });\n // Add identity mapping for consistency with addTrack.\n // Unless this is being used with a stream from addTrack.\n if (!this._reverseStreams[stream.id]) {\n const newStream = new window.MediaStream(stream.getTracks());\n this._streams[stream.id] = newStream;\n this._reverseStreams[newStream.id] = stream;\n stream = newStream;\n }\n origAddStream.apply(this, [stream]);\n };\n\n const origRemoveStream = window.RTCPeerConnection.prototype.removeStream;\n window.RTCPeerConnection.prototype.removeStream =\n function removeStream(stream) {\n this._streams = this._streams || {};\n this._reverseStreams = this._reverseStreams || {};\n\n origRemoveStream.apply(this, [(this._streams[stream.id] || stream)]);\n delete this._reverseStreams[(this._streams[stream.id] ?\n this._streams[stream.id].id : stream.id)];\n delete this._streams[stream.id];\n };\n\n window.RTCPeerConnection.prototype.addTrack =\n function addTrack(track, stream) {\n if (this.signalingState === 'closed') {\n throw new DOMException(\n 'The RTCPeerConnection\\'s signalingState is \\'closed\\'.',\n 'InvalidStateError');\n }\n const streams = [].slice.call(arguments, 1);\n if (streams.length !== 1 ||\n !streams[0].getTracks().find(t => t === track)) {\n // this is not fully correct but all we can manage without\n // [[associated MediaStreams]] internal slot.\n throw new DOMException(\n 'The adapter.js addTrack polyfill only supports a single ' +\n ' stream which is associated with the specified track.',\n 'NotSupportedError');\n }\n\n const alreadyExists = this.getSenders().find(s => s.track === track);\n if (alreadyExists) {\n throw new DOMException('Track already exists.',\n 'InvalidAccessError');\n }\n\n this._streams = this._streams || {};\n this._reverseStreams = this._reverseStreams || {};\n const oldStream = this._streams[stream.id];\n if (oldStream) {\n // this is using odd Chrome behaviour, use with caution:\n // https://bugs.chromium.org/p/webrtc/issues/detail?id=7815\n // Note: we rely on the high-level addTrack/dtmf shim to\n // create the sender with a dtmf sender.\n oldStream.addTrack(track);\n\n // Trigger ONN async.\n Promise.resolve().then(() => {\n this.dispatchEvent(new Event('negotiationneeded'));\n });\n } else {\n const newStream = new window.MediaStream([track]);\n this._streams[stream.id] = newStream;\n this._reverseStreams[newStream.id] = stream;\n this.addStream(newStream);\n }\n return this.getSenders().find(s => s.track === track);\n };\n\n // replace the internal stream id with the external one and\n // vice versa.\n function replaceInternalStreamId(pc, description) {\n let sdp = description.sdp;\n Object.keys(pc._reverseStreams || []).forEach(internalId => {\n const externalStream = pc._reverseStreams[internalId];\n const internalStream = pc._streams[externalStream.id];\n sdp = sdp.replace(new RegExp(internalStream.id, 'g'),\n externalStream.id);\n });\n return new RTCSessionDescription({\n type: description.type,\n sdp\n });\n }\n function replaceExternalStreamId(pc, description) {\n let sdp = description.sdp;\n Object.keys(pc._reverseStreams || []).forEach(internalId => {\n const externalStream = pc._reverseStreams[internalId];\n const internalStream = pc._streams[externalStream.id];\n sdp = sdp.replace(new RegExp(externalStream.id, 'g'),\n internalStream.id);\n });\n return new RTCSessionDescription({\n type: description.type,\n sdp\n });\n }\n ['createOffer', 'createAnswer'].forEach(function(method) {\n const nativeMethod = window.RTCPeerConnection.prototype[method];\n const methodObj = {[method]() {\n const args = arguments;\n const isLegacyCall = arguments.length &&\n typeof arguments[0] === 'function';\n if (isLegacyCall) {\n return nativeMethod.apply(this, [\n (description) => {\n const desc = replaceInternalStreamId(this, description);\n args[0].apply(null, [desc]);\n },\n (err) => {\n if (args[1]) {\n args[1].apply(null, err);\n }\n }, arguments[2]\n ]);\n }\n return nativeMethod.apply(this, arguments)\n .then(description => replaceInternalStreamId(this, description));\n }};\n window.RTCPeerConnection.prototype[method] = methodObj[method];\n });\n\n const origSetLocalDescription =\n window.RTCPeerConnection.prototype.setLocalDescription;\n window.RTCPeerConnection.prototype.setLocalDescription =\n function setLocalDescription() {\n if (!arguments.length || !arguments[0].type) {\n return origSetLocalDescription.apply(this, arguments);\n }\n arguments[0] = replaceExternalStreamId(this, arguments[0]);\n return origSetLocalDescription.apply(this, arguments);\n };\n\n // TODO: mangle getStats: https://w3c.github.io/webrtc-stats/#dom-rtcmediastreamstats-streamidentifier\n\n const origLocalDescription = Object.getOwnPropertyDescriptor(\n window.RTCPeerConnection.prototype, 'localDescription');\n Object.defineProperty(window.RTCPeerConnection.prototype,\n 'localDescription', {\n get() {\n const description = origLocalDescription.get.apply(this);\n if (description.type === '') {\n return description;\n }\n return replaceInternalStreamId(this, description);\n }\n });\n\n window.RTCPeerConnection.prototype.removeTrack =\n function removeTrack(sender) {\n if (this.signalingState === 'closed') {\n throw new DOMException(\n 'The RTCPeerConnection\\'s signalingState is \\'closed\\'.',\n 'InvalidStateError');\n }\n // We can not yet check for sender instanceof RTCRtpSender\n // since we shim RTPSender. So we check if sender._pc is set.\n if (!sender._pc) {\n throw new DOMException('Argument 1 of RTCPeerConnection.removeTrack ' +\n 'does not implement interface RTCRtpSender.', 'TypeError');\n }\n const isLocal = sender._pc === this;\n if (!isLocal) {\n throw new DOMException('Sender was not created by this connection.',\n 'InvalidAccessError');\n }\n\n // Search for the native stream the senders track belongs to.\n this._streams = this._streams || {};\n let stream;\n Object.keys(this._streams).forEach(streamid => {\n const hasTrack = this._streams[streamid].getTracks()\n .find(track => sender.track === track);\n if (hasTrack) {\n stream = this._streams[streamid];\n }\n });\n\n if (stream) {\n if (stream.getTracks().length === 1) {\n // if this is the last track of the stream, remove the stream. This\n // takes care of any shimmed _senders.\n this.removeStream(this._reverseStreams[stream.id]);\n } else {\n // relying on the same odd chrome behaviour as above.\n stream.removeTrack(sender.track);\n }\n this.dispatchEvent(new Event('negotiationneeded'));\n }\n };\n}\n\nexport function shimPeerConnection(window, browserDetails) {\n if (!window.RTCPeerConnection && window.webkitRTCPeerConnection) {\n // very basic support for old versions.\n window.RTCPeerConnection = window.webkitRTCPeerConnection;\n }\n if (!window.RTCPeerConnection) {\n return;\n }\n\n // shim implicit creation of RTCSessionDescription/RTCIceCandidate\n if (browserDetails.version < 53) {\n ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate']\n .forEach(function(method) {\n const nativeMethod = window.RTCPeerConnection.prototype[method];\n const methodObj = {[method]() {\n arguments[0] = new ((method === 'addIceCandidate') ?\n window.RTCIceCandidate :\n window.RTCSessionDescription)(arguments[0]);\n return nativeMethod.apply(this, arguments);\n }};\n window.RTCPeerConnection.prototype[method] = methodObj[method];\n });\n }\n}\n\n// Attempt to fix ONN in plan-b mode.\nexport function fixNegotiationNeeded(window, browserDetails) {\n utils.wrapPeerConnectionEvent(window, 'negotiationneeded', e => {\n const pc = e.target;\n if (browserDetails.version < 72 || (pc.getConfiguration &&\n pc.getConfiguration().sdpSemantics === 'plan-b')) {\n if (pc.signalingState !== 'stable') {\n return;\n }\n }\n return e;\n });\n}\n","/*\n * Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nimport * as utils from '../utils';\n// Edge does not like\n// 1) stun: filtered after 14393 unless ?transport=udp is present\n// 2) turn: that does not have all of turn:host:port?transport=udp\n// 3) turn: with ipv6 addresses\n// 4) turn: occurring muliple times\nexport function filterIceServers(iceServers, edgeVersion) {\n let hasTurn = false;\n iceServers = JSON.parse(JSON.stringify(iceServers));\n return iceServers.filter(server => {\n if (server && (server.urls || server.url)) {\n let urls = server.urls || server.url;\n if (server.url && !server.urls) {\n utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls');\n }\n const isString = typeof urls === 'string';\n if (isString) {\n urls = [urls];\n }\n urls = urls.filter(url => {\n // filter STUN unconditionally.\n if (url.indexOf('stun:') === 0) {\n return false;\n }\n\n const validTurn = url.startsWith('turn') &&\n !url.startsWith('turn:[') &&\n url.includes('transport=udp');\n if (validTurn && !hasTurn) {\n hasTurn = true;\n return true;\n }\n return validTurn && !hasTurn;\n });\n\n delete server.url;\n server.urls = isString ? urls[0] : urls;\n return !!urls.length;\n }\n });\n}\n","/* eslint-env node */\n'use strict';\n\n// SDP helpers.\nvar SDPUtils = {};\n\n// Generate an alphanumeric identifier for cname or mids.\n// TODO: use UUIDs instead? https://gist.github.com/jed/982883\nSDPUtils.generateIdentifier = function() {\n return Math.random().toString(36).substr(2, 10);\n};\n\n// The RTCP CNAME used by all peerconnections from the same JS.\nSDPUtils.localCName = SDPUtils.generateIdentifier();\n\n// Splits SDP into lines, dealing with both CRLF and LF.\nSDPUtils.splitLines = function(blob) {\n return blob.trim().split('\\n').map(function(line) {\n return line.trim();\n });\n};\n// Splits SDP into sessionpart and mediasections. Ensures CRLF.\nSDPUtils.splitSections = function(blob) {\n var parts = blob.split('\\nm=');\n return parts.map(function(part, index) {\n return (index > 0 ? 'm=' + part : part).trim() + '\\r\\n';\n });\n};\n\n// returns the session description.\nSDPUtils.getDescription = function(blob) {\n var sections = SDPUtils.splitSections(blob);\n return sections && sections[0];\n};\n\n// returns the individual media sections.\nSDPUtils.getMediaSections = function(blob) {\n var sections = SDPUtils.splitSections(blob);\n sections.shift();\n return sections;\n};\n\n// Returns lines that start with a certain prefix.\nSDPUtils.matchPrefix = function(blob, prefix) {\n return SDPUtils.splitLines(blob).filter(function(line) {\n return line.indexOf(prefix) === 0;\n });\n};\n\n// Parses an ICE candidate line. Sample input:\n// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8\n// rport 55996\"\nSDPUtils.parseCandidate = function(line) {\n var parts;\n // Parse both variants.\n if (line.indexOf('a=candidate:') === 0) {\n parts = line.substring(12).split(' ');\n } else {\n parts = line.substring(10).split(' ');\n }\n\n var candidate = {\n foundation: parts[0],\n component: parseInt(parts[1], 10),\n protocol: parts[2].toLowerCase(),\n priority: parseInt(parts[3], 10),\n ip: parts[4],\n address: parts[4], // address is an alias for ip.\n port: parseInt(parts[5], 10),\n // skip parts[6] == 'typ'\n type: parts[7]\n };\n\n for (var i = 8; i < parts.length; i += 2) {\n switch (parts[i]) {\n case 'raddr':\n candidate.relatedAddress = parts[i + 1];\n break;\n case 'rport':\n candidate.relatedPort = parseInt(parts[i + 1], 10);\n break;\n case 'tcptype':\n candidate.tcpType = parts[i + 1];\n break;\n case 'ufrag':\n candidate.ufrag = parts[i + 1]; // for backward compability.\n candidate.usernameFragment = parts[i + 1];\n break;\n default: // extension handling, in particular ufrag\n candidate[parts[i]] = parts[i + 1];\n break;\n }\n }\n return candidate;\n};\n\n// Translates a candidate object into SDP candidate attribute.\nSDPUtils.writeCandidate = function(candidate) {\n var sdp = [];\n sdp.push(candidate.foundation);\n sdp.push(candidate.component);\n sdp.push(candidate.protocol.toUpperCase());\n sdp.push(candidate.priority);\n sdp.push(candidate.address || candidate.ip);\n sdp.push(candidate.port);\n\n var type = candidate.type;\n sdp.push('typ');\n sdp.push(type);\n if (type !== 'host' && candidate.relatedAddress &&\n candidate.relatedPort) {\n sdp.push('raddr');\n sdp.push(candidate.relatedAddress);\n sdp.push('rport');\n sdp.push(candidate.relatedPort);\n }\n if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {\n sdp.push('tcptype');\n sdp.push(candidate.tcpType);\n }\n if (candidate.usernameFragment || candidate.ufrag) {\n sdp.push('ufrag');\n sdp.push(candidate.usernameFragment || candidate.ufrag);\n }\n return 'candidate:' + sdp.join(' ');\n};\n\n// Parses an ice-options line, returns an array of option tags.\n// a=ice-options:foo bar\nSDPUtils.parseIceOptions = function(line) {\n return line.substr(14).split(' ');\n};\n\n// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input:\n// a=rtpmap:111 opus/48000/2\nSDPUtils.parseRtpMap = function(line) {\n var parts = line.substr(9).split(' ');\n var parsed = {\n payloadType: parseInt(parts.shift(), 10) // was: id\n };\n\n parts = parts[0].split('/');\n\n parsed.name = parts[0];\n parsed.clockRate = parseInt(parts[1], 10); // was: clockrate\n parsed.channels = parts.length === 3 ? parseInt(parts[2], 10) : 1;\n // legacy alias, got renamed back to channels in ORTC.\n parsed.numChannels = parsed.channels;\n return parsed;\n};\n\n// Generate an a=rtpmap line from RTCRtpCodecCapability or\n// RTCRtpCodecParameters.\nSDPUtils.writeRtpMap = function(codec) {\n var pt = codec.payloadType;\n if (codec.preferredPayloadType !== undefined) {\n pt = codec.preferredPayloadType;\n }\n var channels = codec.channels || codec.numChannels || 1;\n return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +\n (channels !== 1 ? '/' + channels : '') + '\\r\\n';\n};\n\n// Parses an a=extmap line (headerextension from RFC 5285). Sample input:\n// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\n// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset\nSDPUtils.parseExtmap = function(line) {\n var parts = line.substr(9).split(' ');\n return {\n id: parseInt(parts[0], 10),\n direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv',\n uri: parts[1]\n };\n};\n\n// Generates a=extmap line from RTCRtpHeaderExtensionParameters or\n// RTCRtpHeaderExtension.\nSDPUtils.writeExtmap = function(headerExtension) {\n return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +\n (headerExtension.direction && headerExtension.direction !== 'sendrecv'\n ? '/' + headerExtension.direction\n : '') +\n ' ' + headerExtension.uri + '\\r\\n';\n};\n\n// Parses an ftmp line, returns dictionary. Sample input:\n// a=fmtp:96 vbr=on;cng=on\n// Also deals with vbr=on; cng=on\nSDPUtils.parseFmtp = function(line) {\n var parsed = {};\n var kv;\n var parts = line.substr(line.indexOf(' ') + 1).split(';');\n for (var j = 0; j < parts.length; j++) {\n kv = parts[j].trim().split('=');\n parsed[kv[0].trim()] = kv[1];\n }\n return parsed;\n};\n\n// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeFmtp = function(codec) {\n var line = '';\n var pt = codec.payloadType;\n if (codec.preferredPayloadType !== undefined) {\n pt = codec.preferredPayloadType;\n }\n if (codec.parameters && Object.keys(codec.parameters).length) {\n var params = [];\n Object.keys(codec.parameters).forEach(function(param) {\n if (codec.parameters[param]) {\n params.push(param + '=' + codec.parameters[param]);\n } else {\n params.push(param);\n }\n });\n line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\\r\\n';\n }\n return line;\n};\n\n// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:\n// a=rtcp-fb:98 nack rpsi\nSDPUtils.parseRtcpFb = function(line) {\n var parts = line.substr(line.indexOf(' ') + 1).split(' ');\n return {\n type: parts.shift(),\n parameter: parts.join(' ')\n };\n};\n// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeRtcpFb = function(codec) {\n var lines = '';\n var pt = codec.payloadType;\n if (codec.preferredPayloadType !== undefined) {\n pt = codec.preferredPayloadType;\n }\n if (codec.rtcpFeedback && codec.rtcpFeedback.length) {\n // FIXME: special handling for trr-int?\n codec.rtcpFeedback.forEach(function(fb) {\n lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +\n (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +\n '\\r\\n';\n });\n }\n return lines;\n};\n\n// Parses an RFC 5576 ssrc media attribute. Sample input:\n// a=ssrc:3735928559 cname:something\nSDPUtils.parseSsrcMedia = function(line) {\n var sp = line.indexOf(' ');\n var parts = {\n ssrc: parseInt(line.substr(7, sp - 7), 10)\n };\n var colon = line.indexOf(':', sp);\n if (colon > -1) {\n parts.attribute = line.substr(sp + 1, colon - sp - 1);\n parts.value = line.substr(colon + 1);\n } else {\n parts.attribute = line.substr(sp + 1);\n }\n return parts;\n};\n\nSDPUtils.parseSsrcGroup = function(line) {\n var parts = line.substr(13).split(' ');\n return {\n semantics: parts.shift(),\n ssrcs: parts.map(function(ssrc) {\n return parseInt(ssrc, 10);\n })\n };\n};\n\n// Extracts the MID (RFC 5888) from a media section.\n// returns the MID or undefined if no mid line was found.\nSDPUtils.getMid = function(mediaSection) {\n var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0];\n if (mid) {\n return mid.substr(6);\n }\n};\n\nSDPUtils.parseFingerprint = function(line) {\n var parts = line.substr(14).split(' ');\n return {\n algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge.\n value: parts[1]\n };\n};\n\n// Extracts DTLS parameters from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n// get the fingerprint line as input. See also getIceParameters.\nSDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {\n var lines = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=fingerprint:');\n // Note: a=setup line is ignored since we use the 'auto' role.\n // Note2: 'algorithm' is not case sensitive except in Edge.\n return {\n role: 'auto',\n fingerprints: lines.map(SDPUtils.parseFingerprint)\n };\n};\n\n// Serializes DTLS parameters to SDP.\nSDPUtils.writeDtlsParameters = function(params, setupType) {\n var sdp = 'a=setup:' + setupType + '\\r\\n';\n params.fingerprints.forEach(function(fp) {\n sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\\r\\n';\n });\n return sdp;\n};\n\n// Parses a=crypto lines into\n// https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#dictionary-rtcsrtpsdesparameters-members\nSDPUtils.parseCryptoLine = function(line) {\n var parts = line.substr(9).split(' ');\n return {\n tag: parseInt(parts[0], 10),\n cryptoSuite: parts[1],\n keyParams: parts[2],\n sessionParams: parts.slice(3),\n };\n};\n\nSDPUtils.writeCryptoLine = function(parameters) {\n return 'a=crypto:' + parameters.tag + ' ' +\n parameters.cryptoSuite + ' ' +\n (typeof parameters.keyParams === 'object'\n ? SDPUtils.writeCryptoKeyParams(parameters.keyParams)\n : parameters.keyParams) +\n (parameters.sessionParams ? ' ' + parameters.sessionParams.join(' ') : '') +\n '\\r\\n';\n};\n\n// Parses the crypto key parameters into\n// https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#rtcsrtpkeyparam*\nSDPUtils.parseCryptoKeyParams = function(keyParams) {\n if (keyParams.indexOf('inline:') !== 0) {\n return null;\n }\n var parts = keyParams.substr(7).split('|');\n return {\n keyMethod: 'inline',\n keySalt: parts[0],\n lifeTime: parts[1],\n mkiValue: parts[2] ? parts[2].split(':')[0] : undefined,\n mkiLength: parts[2] ? parts[2].split(':')[1] : undefined,\n };\n};\n\nSDPUtils.writeCryptoKeyParams = function(keyParams) {\n return keyParams.keyMethod + ':'\n + keyParams.keySalt +\n (keyParams.lifeTime ? '|' + keyParams.lifeTime : '') +\n (keyParams.mkiValue && keyParams.mkiLength\n ? '|' + keyParams.mkiValue + ':' + keyParams.mkiLength\n : '');\n};\n\n// Extracts all SDES paramters.\nSDPUtils.getCryptoParameters = function(mediaSection, sessionpart) {\n var lines = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=crypto:');\n return lines.map(SDPUtils.parseCryptoLine);\n};\n\n// Parses ICE information from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n// get the ice-ufrag and ice-pwd lines as input.\nSDPUtils.getIceParameters = function(mediaSection, sessionpart) {\n var ufrag = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=ice-ufrag:')[0];\n var pwd = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=ice-pwd:')[0];\n if (!(ufrag && pwd)) {\n return null;\n }\n return {\n usernameFragment: ufrag.substr(12),\n password: pwd.substr(10),\n };\n};\n\n// Serializes ICE parameters to SDP.\nSDPUtils.writeIceParameters = function(params) {\n return 'a=ice-ufrag:' + params.usernameFragment + '\\r\\n' +\n 'a=ice-pwd:' + params.password + '\\r\\n';\n};\n\n// Parses the SDP media section and returns RTCRtpParameters.\nSDPUtils.parseRtpParameters = function(mediaSection) {\n var description = {\n codecs: [],\n headerExtensions: [],\n fecMechanisms: [],\n rtcp: []\n };\n var lines = SDPUtils.splitLines(mediaSection);\n var mline = lines[0].split(' ');\n for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..]\n var pt = mline[i];\n var rtpmapline = SDPUtils.matchPrefix(\n mediaSection, 'a=rtpmap:' + pt + ' ')[0];\n if (rtpmapline) {\n var codec = SDPUtils.parseRtpMap(rtpmapline);\n var fmtps = SDPUtils.matchPrefix(\n mediaSection, 'a=fmtp:' + pt + ' ');\n // Only the first a=fmtp:<pt> is considered.\n codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};\n codec.rtcpFeedback = SDPUtils.matchPrefix(\n mediaSection, 'a=rtcp-fb:' + pt + ' ')\n .map(SDPUtils.parseRtcpFb);\n description.codecs.push(codec);\n // parse FEC mechanisms from rtpmap lines.\n switch (codec.name.toUpperCase()) {\n case 'RED':\n case 'ULPFEC':\n description.fecMechanisms.push(codec.name.toUpperCase());\n break;\n default: // only RED and ULPFEC are recognized as FEC mechanisms.\n break;\n }\n }\n }\n SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) {\n description.headerExtensions.push(SDPUtils.parseExtmap(line));\n });\n // FIXME: parse rtcp.\n return description;\n};\n\n// Generates parts of the SDP media section describing the capabilities /\n// parameters.\nSDPUtils.writeRtpDescription = function(kind, caps) {\n var sdp = '';\n\n // Build the mline.\n sdp += 'm=' + kind + ' ';\n sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.\n sdp += ' UDP/TLS/RTP/SAVPF ';\n sdp += caps.codecs.map(function(codec) {\n if (codec.preferredPayloadType !== undefined) {\n return codec.preferredPayloadType;\n }\n return codec.payloadType;\n }).join(' ') + '\\r\\n';\n\n sdp += 'c=IN IP4 0.0.0.0\\r\\n';\n sdp += 'a=rtcp:9 IN IP4 0.0.0.0\\r\\n';\n\n // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.\n caps.codecs.forEach(function(codec) {\n sdp += SDPUtils.writeRtpMap(codec);\n sdp += SDPUtils.writeFmtp(codec);\n sdp += SDPUtils.writeRtcpFb(codec);\n });\n var maxptime = 0;\n caps.codecs.forEach(function(codec) {\n if (codec.maxptime > maxptime) {\n maxptime = codec.maxptime;\n }\n });\n if (maxptime > 0) {\n sdp += 'a=maxptime:' + maxptime + '\\r\\n';\n }\n sdp += 'a=rtcp-mux\\r\\n';\n\n if (caps.headerExtensions) {\n caps.headerExtensions.forEach(function(extension) {\n sdp += SDPUtils.writeExtmap(extension);\n });\n }\n // FIXME: write fecMechanisms.\n return sdp;\n};\n\n// Parses the SDP media section and returns an array of\n// RTCRtpEncodingParameters.\nSDPUtils.parseRtpEncodingParameters = function(mediaSection) {\n var encodingParameters = [];\n var description = SDPUtils.parseRtpParameters(mediaSection);\n var hasRed = description.fecMechanisms.indexOf('RED') !== -1;\n var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;\n\n // filter a=ssrc:... cname:, ignore PlanB-msid\n var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n .map(function(line) {\n return SDPUtils.parseSsrcMedia(line);\n })\n .filter(function(parts) {\n return parts.attribute === 'cname';\n });\n var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;\n var secondarySsrc;\n\n var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')\n .map(function(line) {\n var parts = line.substr(17).split(' ');\n return parts.map(function(part) {\n return parseInt(part, 10);\n });\n });\n if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {\n secondarySsrc = flows[0][1];\n }\n\n description.codecs.forEach(function(codec) {\n if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {\n var encParam = {\n ssrc: primarySsrc,\n codecPayloadType: parseInt(codec.parameters.apt, 10)\n };\n if (primarySsrc && secondarySsrc) {\n encParam.rtx = {ssrc: secondarySsrc};\n }\n encodingParameters.push(encParam);\n if (hasRed) {\n encParam = JSON.parse(JSON.stringify(encParam));\n encParam.fec = {\n ssrc: primarySsrc,\n mechanism: hasUlpfec ? 'red+ulpfec' : 'red'\n };\n encodingParameters.push(encParam);\n }\n }\n });\n if (encodingParameters.length === 0 && primarySsrc) {\n encodingParameters.push({\n ssrc: primarySsrc\n });\n }\n\n // we support both b=AS and b=TIAS but interpret AS as TIAS.\n var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');\n if (bandwidth.length) {\n if (bandwidth[0].indexOf('b=TIAS:') === 0) {\n bandwidth = parseInt(bandwidth[0].substr(7), 10);\n } else if (bandwidth[0].indexOf('b=AS:') === 0) {\n // use formula from JSEP to convert b=AS to TIAS value.\n bandwidth = parseInt(bandwidth[0].substr(5), 10) * 1000 * 0.95\n - (50 * 40 * 8);\n } else {\n bandwidth = undefined;\n }\n encodingParameters.forEach(function(params) {\n params.maxBitrate = bandwidth;\n });\n }\n return encodingParameters;\n};\n\n// parses http://draft.ortc.org/#rtcrtcpparameters*\nSDPUtils.parseRtcpParameters = function(mediaSection) {\n var rtcpParameters = {};\n\n // Gets the first SSRC. Note tha with RTX there might be multiple\n // SSRCs.\n var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n .map(function(line) {\n return SDPUtils.parseSsrcMedia(line);\n })\n .filter(function(obj) {\n return obj.attribute === 'cname';\n })[0];\n if (remoteSsrc) {\n rtcpParameters.cname = remoteSsrc.value;\n rtcpParameters.ssrc = remoteSsrc.ssrc;\n }\n\n // Edge uses the compound attribute instead of reducedSize\n // compound is !reducedSize\n var rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize');\n rtcpParameters.reducedSize = rsize.length > 0;\n rtcpParameters.compound = rsize.length === 0;\n\n // parses the rtcp-mux attrіbute.\n // Note that Edge does not support unmuxed RTCP.\n var mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux');\n rtcpParameters.mux = mux.length > 0;\n\n return rtcpParameters;\n};\n\n// parses either a=msid: or a=ssrc:... msid lines and returns\n// the id of the MediaStream and MediaStreamTrack.\nSDPUtils.parseMsid = function(mediaSection) {\n var parts;\n var spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:');\n if (spec.length === 1) {\n parts = spec[0].substr(7).split(' ');\n return {stream: parts[0], track: parts[1]};\n }\n var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n .map(function(line) {\n return SDPUtils.parseSsrcMedia(line);\n })\n .filter(function(msidParts) {\n return msidParts.attribute === 'msid';\n });\n if (planB.length > 0) {\n parts = planB[0].value.split(' ');\n return {stream: parts[0], track: parts[1]};\n }\n};\n\n// SCTP\n// parses draft-ietf-mmusic-sctp-sdp-26 first and falls back\n// to draft-ietf-mmusic-sctp-sdp-05\nSDPUtils.parseSctpDescription = function(mediaSection) {\n var mline = SDPUtils.parseMLine(mediaSection);\n var maxSizeLine = SDPUtils.matchPrefix(mediaSection, 'a=max-message-size:');\n var maxMessageSize;\n if (maxSizeLine.length > 0) {\n maxMessageSize = parseInt(maxSizeLine[0].substr(19), 10);\n }\n if (isNaN(maxMessageSize)) {\n maxMessageSize = 65536;\n }\n var sctpPort = SDPUtils.matchPrefix(mediaSection, 'a=sctp-port:');\n if (sctpPort.length > 0) {\n return {\n port: parseInt(sctpPort[0].substr(12), 10),\n protocol: mline.fmt,\n maxMessageSize: maxMessageSize\n };\n }\n var sctpMapLines = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:');\n if (sctpMapLines.length > 0) {\n var parts = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:')[0]\n .substr(10)\n .split(' ');\n return {\n port: parseInt(parts[0], 10),\n protocol: parts[1],\n maxMessageSize: maxMessageSize\n };\n }\n};\n\n// SCTP\n// outputs the draft-ietf-mmusic-sctp-sdp-26 version that all browsers\n// support by now receiving in this format, unless we originally parsed\n// as the draft-ietf-mmusic-sctp-sdp-05 format (indicated by the m-line\n// protocol of DTLS/SCTP -- without UDP/ or TCP/)\nSDPUtils.writeSctpDescription = function(media, sctp) {\n var output = [];\n if (media.protocol !== 'DTLS/SCTP') {\n output = [\n 'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.protocol + '\\r\\n',\n 'c=IN IP4 0.0.0.0\\r\\n',\n 'a=sctp-port:' + sctp.port + '\\r\\n'\n ];\n } else {\n output = [\n 'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.port + '\\r\\n',\n 'c=IN IP4 0.0.0.0\\r\\n',\n 'a=sctpmap:' + sctp.port + ' ' + sctp.protocol + ' 65535\\r\\n'\n ];\n }\n if (sctp.maxMessageSize !== undefined) {\n output.push('a=max-message-size:' + sctp.maxMessageSize + '\\r\\n');\n }\n return output.join('');\n};\n\n// Generate a session ID for SDP.\n// https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1\n// recommends using a cryptographically random +ve 64-bit value\n// but right now this should be acceptable and within the right range\nSDPUtils.generateSessionId = function() {\n return Math.random().toString().substr(2, 21);\n};\n\n// Write boilder plate for start of SDP\n// sessId argument is optional - if not supplied it will\n// be generated randomly\n// sessVersion is optional and defaults to 2\n// sessUser is optional and defaults to 'thisisadapterortc'\nSDPUtils.writeSessionBoilerplate = function(sessId, sessVer, sessUser) {\n var sessionId;\n var version = sessVer !== undefined ? sessVer : 2;\n if (sessId) {\n sessionId = sessId;\n } else {\n sessionId = SDPUtils.generateSessionId();\n }\n var user = sessUser || 'thisisadapterortc';\n // FIXME: sess-id should be an NTP timestamp.\n return 'v=0\\r\\n' +\n 'o=' + user + ' ' + sessionId + ' ' + version +\n ' IN IP4 127.0.0.1\\r\\n' +\n 's=-\\r\\n' +\n 't=0 0\\r\\n';\n};\n\nSDPUtils.writeMediaSection = function(transceiver, caps, type, stream) {\n var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);\n\n // Map ICE parameters (ufrag, pwd) to SDP.\n sdp += SDPUtils.writeIceParameters(\n transceiver.iceGatherer.getLocalParameters());\n\n // Map DTLS parameters to SDP.\n sdp += SDPUtils.writeDtlsParameters(\n transceiver.dtlsTransport.getLocalParameters(),\n type === 'offer' ? 'actpass' : 'active');\n\n sdp += 'a=mid:' + transceiver.mid + '\\r\\n';\n\n if (transceiver.direction) {\n sdp += 'a=' + transceiver.direction + '\\r\\n';\n } else if (transceiver.rtpSender && transceiver.rtpReceiver) {\n sdp += 'a=sendrecv\\r\\n';\n } else if (transceiver.rtpSender) {\n sdp += 'a=sendonly\\r\\n';\n } else if (transceiver.rtpReceiver) {\n sdp += 'a=recvonly\\r\\n';\n } else {\n sdp += 'a=inactive\\r\\n';\n }\n\n if (transceiver.rtpSender) {\n // spec.\n var msid = 'msid:' + stream.id + ' ' +\n transceiver.rtpSender.track.id + '\\r\\n';\n sdp += 'a=' + msid;\n\n // for Chrome.\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n ' ' + msid;\n if (transceiver.sendEncodingParameters[0].rtx) {\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +\n ' ' + msid;\n sdp += 'a=ssrc-group:FID ' +\n transceiver.sendEncodingParameters[0].ssrc + ' ' +\n transceiver.sendEncodingParameters[0].rtx.ssrc +\n '\\r\\n';\n }\n }\n // FIXME: this should be written by writeRtpDescription.\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n ' cname:' + SDPUtils.localCName + '\\r\\n';\n if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +\n ' cname:' + SDPUtils.localCName + '\\r\\n';\n }\n return sdp;\n};\n\n// Gets the direction from the mediaSection or the sessionpart.\nSDPUtils.getDirection = function(mediaSection, sessionpart) {\n // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.\n var lines = SDPUtils.splitLines(mediaSection);\n for (var i = 0; i < lines.length; i++) {\n switch (lines[i]) {\n case 'a=sendrecv':\n case 'a=sendonly':\n case 'a=recvonly':\n case 'a=inactive':\n return lines[i].substr(2);\n default:\n // FIXME: What should happen here?\n }\n }\n if (sessionpart) {\n return SDPUtils.getDirection(sessionpart);\n }\n return 'sendrecv';\n};\n\nSDPUtils.getKind = function(mediaSection) {\n var lines = SDPUtils.splitLines(mediaSection);\n var mline = lines[0].split(' ');\n return mline[0].substr(2);\n};\n\nSDPUtils.isRejected = function(mediaSection) {\n return mediaSection.split(' ', 2)[1] === '0';\n};\n\nSDPUtils.parseMLine = function(mediaSection) {\n var lines = SDPUtils.splitLines(mediaSection);\n var parts = lines[0].substr(2).split(' ');\n return {\n kind: parts[0],\n port: parseInt(parts[1], 10),\n protocol: parts[2],\n fmt: parts.slice(3).join(' ')\n };\n};\n\nSDPUtils.parseOLine = function(mediaSection) {\n var line = SDPUtils.matchPrefix(mediaSection, 'o=')[0];\n var parts = line.substr(2).split(' ');\n return {\n username: parts[0],\n sessionId: parts[1],\n sessionVersion: parseInt(parts[2], 10),\n netType: parts[3],\n addressType: parts[4],\n address: parts[5]\n };\n};\n\n// a very naive interpretation of a valid SDP.\nSDPUtils.isValidSDP = function(blob) {\n if (typeof blob !== 'string' || blob.length === 0) {\n return false;\n }\n var lines = SDPUtils.splitLines(blob);\n for (var i = 0; i < lines.length; i++) {\n if (lines[i].length < 2 || lines[i].charAt(1) !== '=') {\n return false;\n }\n // TODO: check the modifier a bit more.\n }\n return true;\n};\n\n// Expose public methods.\nif (typeof module === 'object') {\n module.exports = SDPUtils;\n}\n","/*\n * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = require('sdp');\n\nfunction fixStatsType(stat) {\n return {\n inboundrtp: 'inbound-rtp',\n outboundrtp: 'outbound-rtp',\n candidatepair: 'candidate-pair',\n localcandidate: 'local-candidate',\n remotecandidate: 'remote-candidate'\n }[stat.type] || stat.type;\n}\n\nfunction writeMediaSection(transceiver, caps, type, stream, dtlsRole) {\n var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);\n\n // Map ICE parameters (ufrag, pwd) to SDP.\n sdp += SDPUtils.writeIceParameters(\n transceiver.iceGatherer.getLocalParameters());\n\n // Map DTLS parameters to SDP.\n sdp += SDPUtils.writeDtlsParameters(\n transceiver.dtlsTransport.getLocalParameters(),\n type === 'offer' ? 'actpass' : dtlsRole || 'active');\n\n sdp += 'a=mid:' + transceiver.mid + '\\r\\n';\n\n if (transceiver.rtpSender && transceiver.rtpReceiver) {\n sdp += 'a=sendrecv\\r\\n';\n } else if (transceiver.rtpSender) {\n sdp += 'a=sendonly\\r\\n';\n } else if (transceiver.rtpReceiver) {\n sdp += 'a=recvonly\\r\\n';\n } else {\n sdp += 'a=inactive\\r\\n';\n }\n\n if (transceiver.rtpSender) {\n var trackId = transceiver.rtpSender._initialTrackId ||\n transceiver.rtpSender.track.id;\n transceiver.rtpSender._initialTrackId = trackId;\n // spec.\n var msid = 'msid:' + (stream ? stream.id : '-') + ' ' +\n trackId + '\\r\\n';\n sdp += 'a=' + msid;\n // for Chrome. Legacy should no longer be required.\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n ' ' + msid;\n\n // RTX\n if (transceiver.sendEncodingParameters[0].rtx) {\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +\n ' ' + msid;\n sdp += 'a=ssrc-group:FID ' +\n transceiver.sendEncodingParameters[0].ssrc + ' ' +\n transceiver.sendEncodingParameters[0].rtx.ssrc +\n '\\r\\n';\n }\n }\n // FIXME: this should be written by writeRtpDescription.\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n ' cname:' + SDPUtils.localCName + '\\r\\n';\n if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +\n ' cname:' + SDPUtils.localCName + '\\r\\n';\n }\n return sdp;\n}\n\n// Edge does not like\n// 1) stun: filtered after 14393 unless ?transport=udp is present\n// 2) turn: that does not have all of turn:host:port?transport=udp\n// 3) turn: with ipv6 addresses\n// 4) turn: occurring muliple times\nfunction filterIceServers(iceServers, edgeVersion) {\n var hasTurn = false;\n iceServers = JSON.parse(JSON.stringify(iceServers));\n return iceServers.filter(function(server) {\n if (server && (server.urls || server.url)) {\n var urls = server.urls || server.url;\n if (server.url && !server.urls) {\n console.warn('RTCIceServer.url is deprecated! Use urls instead.');\n }\n var isString = typeof urls === 'string';\n if (isString) {\n urls = [urls];\n }\n urls = urls.filter(function(url) {\n var validTurn = url.indexOf('turn:') === 0 &&\n url.indexOf('transport=udp') !== -1 &&\n url.indexOf('turn:[') === -1 &&\n !hasTurn;\n\n if (validTurn) {\n hasTurn = true;\n return true;\n }\n return url.indexOf('stun:') === 0 && edgeVersion >= 14393 &&\n url.indexOf('?transport=udp') === -1;\n });\n\n delete server.url;\n server.urls = isString ? urls[0] : urls;\n return !!urls.length;\n }\n });\n}\n\n// Determines the intersection of local and remote capabilities.\nfunction getCommonCapabilities(localCapabilities, remoteCapabilities) {\n var commonCapabilities = {\n codecs: [],\n headerExtensions: [],\n fecMechanisms: []\n };\n\n var findCodecByPayloadType = function(pt, codecs) {\n pt = parseInt(pt, 10);\n for (var i = 0; i < codecs.length; i++) {\n if (codecs[i].payloadType === pt ||\n codecs[i].preferredPayloadType === pt) {\n return codecs[i];\n }\n }\n };\n\n var rtxCapabilityMatches = function(lRtx, rRtx, lCodecs, rCodecs) {\n var lCodec = findCodecByPayloadType(lRtx.parameters.apt, lCodecs);\n var rCodec = findCodecByPayloadType(rRtx.parameters.apt, rCodecs);\n return lCodec && rCodec &&\n lCodec.name.toLowerCase() === rCodec.name.toLowerCase();\n };\n\n localCapabilities.codecs.forEach(function(lCodec) {\n for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n var rCodec = remoteCapabilities.codecs[i];\n if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n lCodec.clockRate === rCodec.clockRate) {\n if (lCodec.name.toLowerCase() === 'rtx' &&\n lCodec.parameters && rCodec.parameters.apt) {\n // for RTX we need to find the local rtx that has a apt\n // which points to the same local codec as the remote one.\n if (!rtxCapabilityMatches(lCodec, rCodec,\n localCapabilities.codecs, remoteCapabilities.codecs)) {\n continue;\n }\n }\n rCodec = JSON.parse(JSON.stringify(rCodec)); // deepcopy\n // number of channels is the highest common number of channels\n rCodec.numChannels = Math.min(lCodec.numChannels,\n rCodec.numChannels);\n // push rCodec so we reply with offerer payload type\n commonCapabilities.codecs.push(rCodec);\n\n // determine common feedback mechanisms\n rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) {\n for (var j = 0; j < lCodec.rtcpFeedback.length; j++) {\n if (lCodec.rtcpFeedback[j].type === fb.type &&\n lCodec.rtcpFeedback[j].parameter === fb.parameter) {\n return true;\n }\n }\n return false;\n });\n // FIXME: also need to determine .parameters\n // see https://github.com/openpeer/ortc/issues/569\n break;\n }\n }\n });\n\n localCapabilities.headerExtensions.forEach(function(lHeaderExtension) {\n for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n i++) {\n var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n if (lHeaderExtension.uri === rHeaderExtension.uri) {\n commonCapabilities.headerExtensions.push(rHeaderExtension);\n break;\n }\n }\n });\n\n // FIXME: fecMechanisms\n return commonCapabilities;\n}\n\n// is action=setLocalDescription with type allowed in signalingState\nfunction isActionAllowedInSignalingState(action, type, signalingState) {\n return {\n offer: {\n setLocalDescription: ['stable', 'have-local-offer'],\n setRemoteDescription: ['stable', 'have-remote-offer']\n },\n answer: {\n setLocalDescription: ['have-remote-offer', 'have-local-pranswer'],\n setRemoteDescription: ['have-local-offer', 'have-remote-pranswer']\n }\n }[type][action].indexOf(signalingState) !== -1;\n}\n\nfunction maybeAddCandidate(iceTransport, candidate) {\n // Edge's internal representation adds some fields therefore\n // not all fieldѕ are taken into account.\n var alreadyAdded = iceTransport.getRemoteCandidates()\n .find(function(remoteCandidate) {\n return candidate.foundation === remoteCandidate.foundation &&\n candidate.ip === remoteCandidate.ip &&\n candidate.port === remoteCandidate.port &&\n candidate.priority === remoteCandidate.priority &&\n candidate.protocol === remoteCandidate.protocol &&\n candidate.type === remoteCandidate.type;\n });\n if (!alreadyAdded) {\n iceTransport.addRemoteCandidate(candidate);\n }\n return !alreadyAdded;\n}\n\n\nfunction makeError(name, description) {\n var e = new Error(description);\n e.name = name;\n // legacy error codes from https://heycam.github.io/webidl/#idl-DOMException-error-names\n e.code = {\n NotSupportedError: 9,\n InvalidStateError: 11,\n InvalidAccessError: 15,\n TypeError: undefined,\n OperationError: undefined\n }[name];\n return e;\n}\n\nmodule.exports = function(window, edgeVersion) {\n // https://w3c.github.io/mediacapture-main/#mediastream\n // Helper function to add the track to the stream and\n // dispatch the event ourselves.\n function addTrackToStreamAndFireEvent(track, stream) {\n stream.addTrack(track);\n stream.dispatchEvent(new window.MediaStreamTrackEvent('addtrack',\n {track: track}));\n }\n\n function removeTrackFromStreamAndFireEvent(track, stream) {\n stream.removeTrack(track);\n stream.dispatchEvent(new window.MediaStreamTrackEvent('removetrack',\n {track: track}));\n }\n\n function fireAddTrack(pc, track, receiver, streams) {\n var trackEvent = new Event('track');\n trackEvent.track = track;\n trackEvent.receiver = receiver;\n trackEvent.transceiver = {receiver: receiver};\n trackEvent.streams = streams;\n window.setTimeout(function() {\n pc._dispatchEvent('track', trackEvent);\n });\n }\n\n var RTCPeerConnection = function(config) {\n var pc = this;\n\n var _eventTarget = document.createDocumentFragment();\n ['addEventListener', 'removeEventListener', 'dispatchEvent']\n .forEach(function(method) {\n pc[method] = _eventTarget[method].bind(_eventTarget);\n });\n\n this.canTrickleIceCandidates = null;\n\n this.needNegotiation = false;\n\n this.localStreams = [];\n this.remoteStreams = [];\n\n this._localDescription = null;\n this._remoteDescription = null;\n\n this.signalingState = 'stable';\n this.iceConnectionState = 'new';\n this.connectionState = 'new';\n this.iceGatheringState = 'new';\n\n config = JSON.parse(JSON.stringify(config || {}));\n\n this.usingBundle = config.bundlePolicy === 'max-bundle';\n if (config.rtcpMuxPolicy === 'negotiate') {\n throw(makeError('NotSupportedError',\n 'rtcpMuxPolicy \\'negotiate\\' is not supported'));\n } else if (!config.rtcpMuxPolicy) {\n config.rtcpMuxPolicy = 'require';\n }\n\n switch (config.iceTransportPolicy) {\n case 'all':\n case 'relay':\n break;\n default:\n config.iceTransportPolicy = 'all';\n break;\n }\n\n switch (config.bundlePolicy) {\n case 'balanced':\n case 'max-compat':\n case 'max-bundle':\n break;\n default:\n config.bundlePolicy = 'balanced';\n break;\n }\n\n config.iceServers = filterIceServers(config.iceServers || [], edgeVersion);\n\n this._iceGatherers = [];\n if (config.iceCandidatePoolSize) {\n for (var i = config.iceCandidatePoolSize; i > 0; i--) {\n this._iceGatherers.push(new window.RTCIceGatherer({\n iceServers: config.iceServers,\n gatherPolicy: config.iceTransportPolicy\n }));\n }\n } else {\n config.iceCandidatePoolSize = 0;\n }\n\n this._config = config;\n\n // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n // everything that is needed to describe a SDP m-line.\n this.transceivers = [];\n\n this._sdpSessionId = SDPUtils.generateSessionId();\n this._sdpSessionVersion = 0;\n\n this._dtlsRole = undefined; // role for a=setup to use in answers.\n\n this._isClosed = false;\n };\n\n Object.defineProperty(RTCPeerConnection.prototype, 'localDescription', {\n configurable: true,\n get: function() {\n return this._localDescription;\n }\n });\n Object.defineProperty(RTCPeerConnection.prototype, 'remoteDescription', {\n configurable: true,\n get: function() {\n return this._remoteDescription;\n }\n });\n\n // set up event handlers on prototype\n RTCPeerConnection.prototype.onicecandidate = null;\n RTCPeerConnection.prototype.onaddstream = null;\n RTCPeerConnection.prototype.ontrack = null;\n RTCPeerConnection.prototype.onremovestream = null;\n RTCPeerConnection.prototype.onsignalingstatechange = null;\n RTCPeerConnection.prototype.oniceconnectionstatechange = null;\n RTCPeerConnection.prototype.onconnectionstatechange = null;\n RTCPeerConnection.prototype.onicegatheringstatechange = null;\n RTCPeerConnection.prototype.onnegotiationneeded = null;\n RTCPeerConnection.prototype.ondatachannel = null;\n\n RTCPeerConnection.prototype._dispatchEvent = function(name, event) {\n if (this._isClosed) {\n return;\n }\n this.dispatchEvent(event);\n if (typeof this['on' + name] === 'function') {\n this['on' + name](event);\n }\n };\n\n RTCPeerConnection.prototype._emitGatheringStateChange = function() {\n var event = new Event('icegatheringstatechange');\n this._dispatchEvent('icegatheringstatechange', event);\n };\n\n RTCPeerConnection.prototype.getConfiguration = function() {\n return this._config;\n };\n\n RTCPeerConnection.prototype.getLocalStreams = function() {\n return this.localStreams;\n };\n\n RTCPeerConnection.prototype.getRemoteStreams = function() {\n return this.remoteStreams;\n };\n\n // internal helper to create a transceiver object.\n // (which is not yet the same as the WebRTC 1.0 transceiver)\n RTCPeerConnection.prototype._createTransceiver = function(kind, doNotAdd) {\n var hasBundleTransport = this.transceivers.length > 0;\n var transceiver = {\n track: null,\n iceGatherer: null,\n iceTransport: null,\n dtlsTransport: null,\n localCapabilities: null,\n remoteCapabilities: null,\n rtpSender: null,\n rtpReceiver: null,\n kind: kind,\n mid: null,\n sendEncodingParameters: null,\n recvEncodingParameters: null,\n stream: null,\n associatedRemoteMediaStreams: [],\n wantReceive: true\n };\n if (this.usingBundle && hasBundleTransport) {\n transceiver.iceTransport = this.transceivers[0].iceTransport;\n transceiver.dtlsTransport = this.transceivers[0].dtlsTransport;\n } else {\n var transports = this._createIceAndDtlsTransports();\n transceiver.iceTransport = transports.iceTransport;\n transceiver.dtlsTransport = transports.dtlsTransport;\n }\n if (!doNotAdd) {\n this.transceivers.push(transceiver);\n }\n return transceiver;\n };\n\n RTCPeerConnection.prototype.addTrack = function(track, stream) {\n if (this._isClosed) {\n throw makeError('InvalidStateError',\n 'Attempted to call addTrack on a closed peerconnection.');\n }\n\n var alreadyExists = this.transceivers.find(function(s) {\n return s.track === track;\n });\n\n if (alreadyExists) {\n throw makeError('InvalidAccessError', 'Track already exists.');\n }\n\n var transceiver;\n for (var i = 0; i < this.transceivers.length; i++) {\n if (!this.transceivers[i].track &&\n this.transceivers[i].kind === track.kind) {\n transceiver = this.transceivers[i];\n }\n }\n if (!transceiver) {\n transceiver = this._createTransceiver(track.kind);\n }\n\n this._maybeFireNegotiationNeeded();\n\n if (this.localStreams.indexOf(stream) === -1) {\n this.localStreams.push(stream);\n }\n\n transceiver.track = track;\n transceiver.stream = stream;\n transceiver.rtpSender = new window.RTCRtpSender(track,\n transceiver.dtlsTransport);\n return transceiver.rtpSender;\n };\n\n RTCPeerConnection.prototype.addStream = function(stream) {\n var pc = this;\n if (edgeVersion >= 15025) {\n stream.getTracks().forEach(function(track) {\n pc.addTrack(track, stream);\n });\n } else {\n // Clone is necessary for local demos mostly, attaching directly\n // to two different senders does not work (build 10547).\n // Fixed in 15025 (or earlier)\n var clonedStream = stream.clone();\n stream.getTracks().forEach(function(track, idx) {\n var clonedTrack = clonedStream.getTracks()[idx];\n track.addEventListener('enabled', function(event) {\n clonedTrack.enabled = event.enabled;\n });\n });\n clonedStream.getTracks().forEach(function(track) {\n pc.addTrack(track, clonedStream);\n });\n }\n };\n\n RTCPeerConnection.prototype.removeTrack = function(sender) {\n if (this._isClosed) {\n throw makeError('InvalidStateError',\n 'Attempted to call removeTrack on a closed peerconnection.');\n }\n\n if (!(sender instanceof window.RTCRtpSender)) {\n throw new TypeError('Argument 1 of RTCPeerConnection.removeTrack ' +\n 'does not implement interface RTCRtpSender.');\n }\n\n var transceiver = this.transceivers.find(function(t) {\n return t.rtpSender === sender;\n });\n\n if (!transceiver) {\n throw makeError('InvalidAccessError',\n 'Sender was not created by this connection.');\n }\n var stream = transceiver.stream;\n\n transceiver.rtpSender.stop();\n transceiver.rtpSender = null;\n transceiver.track = null;\n transceiver.stream = null;\n\n // remove the stream from the set of local streams\n var localStreams = this.transceivers.map(function(t) {\n return t.stream;\n });\n if (localStreams.indexOf(stream) === -1 &&\n this.localStreams.indexOf(stream) > -1) {\n this.localStreams.splice(this.localStreams.indexOf(stream), 1);\n }\n\n this._maybeFireNegotiationNeeded();\n };\n\n RTCPeerConnection.prototype.removeStream = function(stream) {\n var pc = this;\n stream.getTracks().forEach(function(track) {\n var sender = pc.getSenders().find(function(s) {\n return s.track === track;\n });\n if (sender) {\n pc.removeTrack(sender);\n }\n });\n };\n\n RTCPeerConnection.prototype.getSenders = function() {\n return this.transceivers.filter(function(transceiver) {\n return !!transceiver.rtpSender;\n })\n .map(function(transceiver) {\n return transceiver.rtpSender;\n });\n };\n\n RTCPeerConnection.prototype.getReceivers = function() {\n return this.transceivers.filter(function(transceiver) {\n return !!transceiver.rtpReceiver;\n })\n .map(function(transceiver) {\n return transceiver.rtpReceiver;\n });\n };\n\n\n RTCPeerConnection.prototype._createIceGatherer = function(sdpMLineIndex,\n usingBundle) {\n var pc = this;\n if (usingBundle && sdpMLineIndex > 0) {\n return this.transceivers[0].iceGatherer;\n } else if (this._iceGatherers.length) {\n return this._iceGatherers.shift();\n }\n var iceGatherer = new window.RTCIceGatherer({\n iceServers: this._config.iceServers,\n gatherPolicy: this._config.iceTransportPolicy\n });\n Object.defineProperty(iceGatherer, 'state',\n {value: 'new', writable: true}\n );\n\n this.transceivers[sdpMLineIndex].bufferedCandidateEvents = [];\n this.transceivers[sdpMLineIndex].bufferCandidates = function(event) {\n var end = !event.candidate || Object.keys(event.candidate).length === 0;\n // polyfill since RTCIceGatherer.state is not implemented in\n // Edge 10547 yet.\n iceGatherer.state = end ? 'completed' : 'gathering';\n if (pc.transceivers[sdpMLineIndex].bufferedCandidateEvents !== null) {\n pc.transceivers[sdpMLineIndex].bufferedCandidateEvents.push(event);\n }\n };\n iceGatherer.addEventListener('localcandidate',\n this.transceivers[sdpMLineIndex].bufferCandidates);\n return iceGatherer;\n };\n\n // start gathering from an RTCIceGatherer.\n RTCPeerConnection.prototype._gather = function(mid, sdpMLineIndex) {\n var pc = this;\n var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer;\n if (iceGatherer.onlocalcandidate) {\n return;\n }\n var bufferedCandidateEvents =\n this.transceivers[sdpMLineIndex].bufferedCandidateEvents;\n this.transceivers[sdpMLineIndex].bufferedCandidateEvents = null;\n iceGatherer.removeEventListener('localcandidate',\n this.transceivers[sdpMLineIndex].bufferCandidates);\n iceGatherer.onlocalcandidate = function(evt) {\n if (pc.usingBundle && sdpMLineIndex > 0) {\n // if we know that we use bundle we can drop candidates with\n // ѕdpMLineIndex > 0. If we don't do this then our state gets\n // confused since we dispose the extra ice gatherer.\n return;\n }\n var event = new Event('icecandidate');\n event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n var cand = evt.candidate;\n // Edge emits an empty object for RTCIceCandidateComplete‥\n var end = !cand || Object.keys(cand).length === 0;\n if (end) {\n // polyfill since RTCIceGatherer.state is not implemented in\n // Edge 10547 yet.\n if (iceGatherer.state === 'new' || iceGatherer.state === 'gathering') {\n iceGatherer.state = 'completed';\n }\n } else {\n if (iceGatherer.state === 'new') {\n iceGatherer.state = 'gathering';\n }\n // RTCIceCandidate doesn't have a component, needs to be added\n cand.component = 1;\n // also the usernameFragment. TODO: update SDP to take both variants.\n cand.ufrag = iceGatherer.getLocalParameters().usernameFragment;\n\n var serializedCandidate = SDPUtils.writeCandidate(cand);\n event.candidate = Object.assign(event.candidate,\n SDPUtils.parseCandidate(serializedCandidate));\n\n event.candidate.candidate = serializedCandidate;\n event.candidate.toJSON = function() {\n return {\n candidate: event.candidate.candidate,\n sdpMid: event.candidate.sdpMid,\n sdpMLineIndex: event.candidate.sdpMLineIndex,\n usernameFragment: event.candidate.usernameFragment\n };\n };\n }\n\n // update local description.\n var sections = SDPUtils.getMediaSections(pc._localDescription.sdp);\n if (!end) {\n sections[event.candidate.sdpMLineIndex] +=\n 'a=' + event.candidate.candidate + '\\r\\n';\n } else {\n sections[event.candidate.sdpMLineIndex] +=\n 'a=end-of-candidates\\r\\n';\n }\n pc._localDescription.sdp =\n SDPUtils.getDescription(pc._localDescription.sdp) +\n sections.join('');\n var complete = pc.transceivers.every(function(transceiver) {\n return transceiver.iceGatherer &&\n transceiver.iceGatherer.state === 'completed';\n });\n\n if (pc.iceGatheringState !== 'gathering') {\n pc.iceGatheringState = 'gathering';\n pc._emitGatheringStateChange();\n }\n\n // Emit candidate. Also emit null candidate when all gatherers are\n // complete.\n if (!end) {\n pc._dispatchEvent('icecandidate', event);\n }\n if (complete) {\n pc._dispatchEvent('icecandidate', new Event('icecandidate'));\n pc.iceGatheringState = 'complete';\n pc._emitGatheringStateChange();\n }\n };\n\n // emit already gathered candidates.\n window.setTimeout(function() {\n bufferedCandidateEvents.forEach(function(e) {\n iceGatherer.onlocalcandidate(e);\n });\n }, 0);\n };\n\n // Create ICE transport and DTLS transport.\n RTCPeerConnection.prototype._createIceAndDtlsTransports = function() {\n var pc = this;\n var iceTransport = new window.RTCIceTransport(null);\n iceTransport.onicestatechange = function() {\n pc._updateIceConnectionState();\n pc._updateConnectionState();\n };\n\n var dtlsTransport = new window.RTCDtlsTransport(iceTransport);\n dtlsTransport.ondtlsstatechange = function() {\n pc._updateConnectionState();\n };\n dtlsTransport.onerror = function() {\n // onerror does not set state to failed by itself.\n Object.defineProperty(dtlsTransport, 'state',\n {value: 'failed', writable: true});\n pc._updateConnectionState();\n };\n\n return {\n iceTransport: iceTransport,\n dtlsTransport: dtlsTransport\n };\n };\n\n // Destroy ICE gatherer, ICE transport and DTLS transport.\n // Without triggering the callbacks.\n RTCPeerConnection.prototype._disposeIceAndDtlsTransports = function(\n sdpMLineIndex) {\n var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer;\n if (iceGatherer) {\n delete iceGatherer.onlocalcandidate;\n delete this.transceivers[sdpMLineIndex].iceGatherer;\n }\n var iceTransport = this.transceivers[sdpMLineIndex].iceTransport;\n if (iceTransport) {\n delete iceTransport.onicestatechange;\n delete this.transceivers[sdpMLineIndex].iceTransport;\n }\n var dtlsTransport = this.transceivers[sdpMLineIndex].dtlsTransport;\n if (dtlsTransport) {\n delete dtlsTransport.ondtlsstatechange;\n delete dtlsTransport.onerror;\n delete this.transceivers[sdpMLineIndex].dtlsTransport;\n }\n };\n\n // Start the RTP Sender and Receiver for a transceiver.\n RTCPeerConnection.prototype._transceive = function(transceiver,\n send, recv) {\n var params = getCommonCapabilities(transceiver.localCapabilities,\n transceiver.remoteCapabilities);\n if (send && transceiver.rtpSender) {\n params.encodings = transceiver.sendEncodingParameters;\n params.rtcp = {\n cname: SDPUtils.localCName,\n compound: transceiver.rtcpParameters.compound\n };\n if (transceiver.recvEncodingParameters.length) {\n params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n }\n transceiver.rtpSender.send(params);\n }\n if (recv && transceiver.rtpReceiver && params.codecs.length > 0) {\n // remove RTX field in Edge 14942\n if (transceiver.kind === 'video'\n && transceiver.recvEncodingParameters\n && edgeVersion < 15019) {\n transceiver.recvEncodingParameters.forEach(function(p) {\n delete p.rtx;\n });\n }\n if (transceiver.recvEncodingParameters.length) {\n params.encodings = transceiver.recvEncodingParameters;\n } else {\n params.encodings = [{}];\n }\n params.rtcp = {\n compound: transceiver.rtcpParameters.compound\n };\n if (transceiver.rtcpParameters.cname) {\n params.rtcp.cname = transceiver.rtcpParameters.cname;\n }\n if (transceiver.sendEncodingParameters.length) {\n params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n }\n transceiver.rtpReceiver.receive(params);\n }\n };\n\n RTCPeerConnection.prototype.setLocalDescription = function(description) {\n var pc = this;\n\n // Note: pranswer is not supported.\n if (['offer', 'answer'].indexOf(description.type) === -1) {\n return Promise.reject(makeError('TypeError',\n 'Unsupported type \"' + description.type + '\"'));\n }\n\n if (!isActionAllowedInSignalingState('setLocalDescription',\n description.type, pc.signalingState) || pc._isClosed) {\n return Promise.reject(makeError('InvalidStateError',\n 'Can not set local ' + description.type +\n ' in state ' + pc.signalingState));\n }\n\n var sections;\n var sessionpart;\n if (description.type === 'offer') {\n // VERY limited support for SDP munging. Limited to:\n // * changing the order of codecs\n sections = SDPUtils.splitSections(description.sdp);\n sessionpart = sections.shift();\n sections.forEach(function(mediaSection, sdpMLineIndex) {\n var caps = SDPUtils.parseRtpParameters(mediaSection);\n pc.transceivers[sdpMLineIndex].localCapabilities = caps;\n });\n\n pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {\n pc._gather(transceiver.mid, sdpMLineIndex);\n });\n } else if (description.type === 'answer') {\n sections = SDPUtils.splitSections(pc._remoteDescription.sdp);\n sessionpart = sections.shift();\n var isIceLite = SDPUtils.matchPrefix(sessionpart,\n 'a=ice-lite').length > 0;\n sections.forEach(function(mediaSection, sdpMLineIndex) {\n var transceiver = pc.transceivers[sdpMLineIndex];\n var iceGatherer = transceiver.iceGatherer;\n var iceTransport = transceiver.iceTransport;\n var dtlsTransport = transceiver.dtlsTransport;\n var localCapabilities = transceiver.localCapabilities;\n var remoteCapabilities = transceiver.remoteCapabilities;\n\n // treat bundle-only as not-rejected.\n var rejected = SDPUtils.isRejected(mediaSection) &&\n SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0;\n\n if (!rejected && !transceiver.rejected) {\n var remoteIceParameters = SDPUtils.getIceParameters(\n mediaSection, sessionpart);\n var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n mediaSection, sessionpart);\n if (isIceLite) {\n remoteDtlsParameters.role = 'server';\n }\n\n if (!pc.usingBundle || sdpMLineIndex === 0) {\n pc._gather(transceiver.mid, sdpMLineIndex);\n if (iceTransport.state === 'new') {\n iceTransport.start(iceGatherer, remoteIceParameters,\n isIceLite ? 'controlling' : 'controlled');\n }\n if (dtlsTransport.state === 'new') {\n dtlsTransport.start(remoteDtlsParameters);\n }\n }\n\n // Calculate intersection of capabilities.\n var params = getCommonCapabilities(localCapabilities,\n remoteCapabilities);\n\n // Start the RTCRtpSender. The RTCRtpReceiver for this\n // transceiver has already been started in setRemoteDescription.\n pc._transceive(transceiver,\n params.codecs.length > 0,\n false);\n }\n });\n }\n\n pc._localDescription = {\n type: description.type,\n sdp: description.sdp\n };\n if (description.type === 'offer') {\n pc._updateSignalingState('have-local-offer');\n } else {\n pc._updateSignalingState('stable');\n }\n\n return Promise.resolve();\n };\n\n RTCPeerConnection.prototype.setRemoteDescription = function(description) {\n var pc = this;\n\n // Note: pranswer is not supported.\n if (['offer', 'answer'].indexOf(description.type) === -1) {\n return Promise.reject(makeError('TypeError',\n 'Unsupported type \"' + description.type + '\"'));\n }\n\n if (!isActionAllowedInSignalingState('setRemoteDescription',\n description.type, pc.signalingState) || pc._isClosed) {\n return Promise.reject(makeError('InvalidStateError',\n 'Can not set remote ' + description.type +\n ' in state ' + pc.signalingState));\n }\n\n var streams = {};\n pc.remoteStreams.forEach(function(stream) {\n streams[stream.id] = stream;\n });\n var receiverList = [];\n var sections = SDPUtils.splitSections(description.sdp);\n var sessionpart = sections.shift();\n var isIceLite = SDPUtils.matchPrefix(sessionpart,\n 'a=ice-lite').length > 0;\n var usingBundle = SDPUtils.matchPrefix(sessionpart,\n 'a=group:BUNDLE ').length > 0;\n pc.usingBundle = usingBundle;\n var iceOptions = SDPUtils.matchPrefix(sessionpart,\n 'a=ice-options:')[0];\n if (iceOptions) {\n pc.canTrickleIceCandidates = iceOptions.substr(14).split(' ')\n .indexOf('trickle') >= 0;\n } else {\n pc.canTrickleIceCandidates = false;\n }\n\n sections.forEach(function(mediaSection, sdpMLineIndex) {\n var lines = SDPUtils.splitLines(mediaSection);\n var kind = SDPUtils.getKind(mediaSection);\n // treat bundle-only as not-rejected.\n var rejected = SDPUtils.isRejected(mediaSection) &&\n SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0;\n var protocol = lines[0].substr(2).split(' ')[2];\n\n var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n var remoteMsid = SDPUtils.parseMsid(mediaSection);\n\n var mid = SDPUtils.getMid(mediaSection) || SDPUtils.generateIdentifier();\n\n // Reject datachannels which are not implemented yet.\n if (rejected || (kind === 'application' && (protocol === 'DTLS/SCTP' ||\n protocol === 'UDP/DTLS/SCTP'))) {\n // TODO: this is dangerous in the case where a non-rejected m-line\n // becomes rejected.\n pc.transceivers[sdpMLineIndex] = {\n mid: mid,\n kind: kind,\n protocol: protocol,\n rejected: true\n };\n return;\n }\n\n if (!rejected && pc.transceivers[sdpMLineIndex] &&\n pc.transceivers[sdpMLineIndex].rejected) {\n // recycle a rejected transceiver.\n pc.transceivers[sdpMLineIndex] = pc._createTransceiver(kind, true);\n }\n\n var transceiver;\n var iceGatherer;\n var iceTransport;\n var dtlsTransport;\n var rtpReceiver;\n var sendEncodingParameters;\n var recvEncodingParameters;\n var localCapabilities;\n\n var track;\n // FIXME: ensure the mediaSection has rtcp-mux set.\n var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n var remoteIceParameters;\n var remoteDtlsParameters;\n if (!rejected) {\n remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n sessionpart);\n remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n sessionpart);\n remoteDtlsParameters.role = 'client';\n }\n recvEncodingParameters =\n SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n var rtcpParameters = SDPUtils.parseRtcpParameters(mediaSection);\n\n var isComplete = SDPUtils.matchPrefix(mediaSection,\n 'a=end-of-candidates', sessionpart).length > 0;\n var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n .map(function(cand) {\n return SDPUtils.parseCandidate(cand);\n })\n .filter(function(cand) {\n return cand.component === 1;\n });\n\n // Check if we can use BUNDLE and dispose transports.\n if ((description.type === 'offer' || description.type === 'answer') &&\n !rejected && usingBundle && sdpMLineIndex > 0 &&\n pc.transceivers[sdpMLineIndex]) {\n pc._disposeIceAndDtlsTransports(sdpMLineIndex);\n pc.transceivers[sdpMLineIndex].iceGatherer =\n pc.transceivers[0].iceGatherer;\n pc.transceivers[sdpMLineIndex].iceTransport =\n pc.transceivers[0].iceTransport;\n pc.transceivers[sdpMLineIndex].dtlsTransport =\n pc.transceivers[0].dtlsTransport;\n if (pc.transceivers[sdpMLineIndex].rtpSender) {\n pc.transceivers[sdpMLineIndex].rtpSender.setTransport(\n pc.transceivers[0].dtlsTransport);\n }\n if (pc.transceivers[sdpMLineIndex].rtpReceiver) {\n pc.transceivers[sdpMLineIndex].rtpReceiver.setTransport(\n pc.transceivers[0].dtlsTransport);\n }\n }\n if (description.type === 'offer' && !rejected) {\n transceiver = pc.transceivers[sdpMLineIndex] ||\n pc._createTransceiver(kind);\n transceiver.mid = mid;\n\n if (!transceiver.iceGatherer) {\n transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex,\n usingBundle);\n }\n\n if (cands.length && transceiver.iceTransport.state === 'new') {\n if (isComplete && (!usingBundle || sdpMLineIndex === 0)) {\n transceiver.iceTransport.setRemoteCandidates(cands);\n } else {\n cands.forEach(function(candidate) {\n maybeAddCandidate(transceiver.iceTransport, candidate);\n });\n }\n }\n\n localCapabilities = window.RTCRtpReceiver.getCapabilities(kind);\n\n // filter RTX until additional stuff needed for RTX is implemented\n // in adapter.js\n if (edgeVersion < 15019) {\n localCapabilities.codecs = localCapabilities.codecs.filter(\n function(codec) {\n return codec.name !== 'rtx';\n });\n }\n\n sendEncodingParameters = transceiver.sendEncodingParameters || [{\n ssrc: (2 * sdpMLineIndex + 2) * 1001\n }];\n\n // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams\n var isNewTrack = false;\n if (direction === 'sendrecv' || direction === 'sendonly') {\n isNewTrack = !transceiver.rtpReceiver;\n rtpReceiver = transceiver.rtpReceiver ||\n new window.RTCRtpReceiver(transceiver.dtlsTransport, kind);\n\n if (isNewTrack) {\n var stream;\n track = rtpReceiver.track;\n // FIXME: does not work with Plan B.\n if (remoteMsid && remoteMsid.stream === '-') {\n // no-op. a stream id of '-' means: no associated stream.\n } else if (remoteMsid) {\n if (!streams[remoteMsid.stream]) {\n streams[remoteMsid.stream] = new window.MediaStream();\n Object.defineProperty(streams[remoteMsid.stream], 'id', {\n get: function() {\n return remoteMsid.stream;\n }\n });\n }\n Object.defineProperty(track, 'id', {\n get: function() {\n return remoteMsid.track;\n }\n });\n stream = streams[remoteMsid.stream];\n } else {\n if (!streams.default) {\n streams.default = new window.MediaStream();\n }\n stream = streams.default;\n }\n if (stream) {\n addTrackToStreamAndFireEvent(track, stream);\n transceiver.associatedRemoteMediaStreams.push(stream);\n }\n receiverList.push([track, rtpReceiver, stream]);\n }\n } else if (transceiver.rtpReceiver && transceiver.rtpReceiver.track) {\n transceiver.associatedRemoteMediaStreams.forEach(function(s) {\n var nativeTrack = s.getTracks().find(function(t) {\n return t.id === transceiver.rtpReceiver.track.id;\n });\n if (nativeTrack) {\n removeTrackFromStreamAndFireEvent(nativeTrack, s);\n }\n });\n transceiver.associatedRemoteMediaStreams = [];\n }\n\n transceiver.localCapabilities = localCapabilities;\n transceiver.remoteCapabilities = remoteCapabilities;\n transceiver.rtpReceiver = rtpReceiver;\n transceiver.rtcpParameters = rtcpParameters;\n transceiver.sendEncodingParameters = sendEncodingParameters;\n transceiver.recvEncodingParameters = recvEncodingParameters;\n\n // Start the RTCRtpReceiver now. The RTPSender is started in\n // setLocalDescription.\n pc._transceive(pc.transceivers[sdpMLineIndex],\n false,\n isNewTrack);\n } else if (description.type === 'answer' && !rejected) {\n transceiver = pc.transceivers[sdpMLineIndex];\n iceGatherer = transceiver.iceGatherer;\n iceTransport = transceiver.iceTransport;\n dtlsTransport = transceiver.dtlsTransport;\n rtpReceiver = transceiver.rtpReceiver;\n sendEncodingParameters = transceiver.sendEncodingParameters;\n localCapabilities = transceiver.localCapabilities;\n\n pc.transceivers[sdpMLineIndex].recvEncodingParameters =\n recvEncodingParameters;\n pc.transceivers[sdpMLineIndex].remoteCapabilities =\n remoteCapabilities;\n pc.transceivers[sdpMLineIndex].rtcpParameters = rtcpParameters;\n\n if (cands.length && iceTransport.state === 'new') {\n if ((isIceLite || isComplete) &&\n (!usingBundle || sdpMLineIndex === 0)) {\n iceTransport.setRemoteCandidates(cands);\n } else {\n cands.forEach(function(candidate) {\n maybeAddCandidate(transceiver.iceTransport, candidate);\n });\n }\n }\n\n if (!usingBundle || sdpMLineIndex === 0) {\n if (iceTransport.state === 'new') {\n iceTransport.start(iceGatherer, remoteIceParameters,\n 'controlling');\n }\n if (dtlsTransport.state === 'new') {\n dtlsTransport.start(remoteDtlsParameters);\n }\n }\n\n // If the offer contained RTX but the answer did not,\n // remove RTX from sendEncodingParameters.\n var commonCapabilities = getCommonCapabilities(\n transceiver.localCapabilities,\n transceiver.remoteCapabilities);\n\n var hasRtx = commonCapabilities.codecs.filter(function(c) {\n return c.name.toLowerCase() === 'rtx';\n }).length;\n if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) {\n delete transceiver.sendEncodingParameters[0].rtx;\n }\n\n pc._transceive(transceiver,\n direction === 'sendrecv' || direction === 'recvonly',\n direction === 'sendrecv' || direction === 'sendonly');\n\n // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams\n if (rtpReceiver &&\n (direction === 'sendrecv' || direction === 'sendonly')) {\n track = rtpReceiver.track;\n if (remoteMsid) {\n if (!streams[remoteMsid.stream]) {\n streams[remoteMsid.stream] = new window.MediaStream();\n }\n addTrackToStreamAndFireEvent(track, streams[remoteMsid.stream]);\n receiverList.push([track, rtpReceiver, streams[remoteMsid.stream]]);\n } else {\n if (!streams.default) {\n streams.default = new window.MediaStream();\n }\n addTrackToStreamAndFireEvent(track, streams.default);\n receiverList.push([track, rtpReceiver, streams.default]);\n }\n } else {\n // FIXME: actually the receiver should be created later.\n delete transceiver.rtpReceiver;\n }\n }\n });\n\n if (pc._dtlsRole === undefined) {\n pc._dtlsRole = description.type === 'offer' ? 'active' : 'passive';\n }\n\n pc._remoteDescription = {\n type: description.type,\n sdp: description.sdp\n };\n if (description.type === 'offer') {\n pc._updateSignalingState('have-remote-offer');\n } else {\n pc._updateSignalingState('stable');\n }\n Object.keys(streams).forEach(function(sid) {\n var stream = streams[sid];\n if (stream.getTracks().length) {\n if (pc.remoteStreams.indexOf(stream) === -1) {\n pc.remoteStreams.push(stream);\n var event = new Event('addstream');\n event.stream = stream;\n window.setTimeout(function() {\n pc._dispatchEvent('addstream', event);\n });\n }\n\n receiverList.forEach(function(item) {\n var track = item[0];\n var receiver = item[1];\n if (stream.id !== item[2].id) {\n return;\n }\n fireAddTrack(pc, track, receiver, [stream]);\n });\n }\n });\n receiverList.forEach(function(item) {\n if (item[2]) {\n return;\n }\n fireAddTrack(pc, item[0], item[1], []);\n });\n\n // check whether addIceCandidate({}) was called within four seconds after\n // setRemoteDescription.\n window.setTimeout(function() {\n if (!(pc && pc.transceivers)) {\n return;\n }\n pc.transceivers.forEach(function(transceiver) {\n if (transceiver.iceTransport &&\n transceiver.iceTransport.state === 'new' &&\n transceiver.iceTransport.getRemoteCandidates().length > 0) {\n console.warn('Timeout for addRemoteCandidate. Consider sending ' +\n 'an end-of-candidates notification');\n transceiver.iceTransport.addRemoteCandidate({});\n }\n });\n }, 4000);\n\n return Promise.resolve();\n };\n\n RTCPeerConnection.prototype.close = function() {\n this.transceivers.forEach(function(transceiver) {\n /* not yet\n if (transceiver.iceGatherer) {\n transceiver.iceGatherer.close();\n }\n */\n if (transceiver.iceTransport) {\n transceiver.iceTransport.stop();\n }\n if (transceiver.dtlsTransport) {\n transceiver.dtlsTransport.stop();\n }\n if (transceiver.rtpSender) {\n transceiver.rtpSender.stop();\n }\n if (transceiver.rtpReceiver) {\n transceiver.rtpReceiver.stop();\n }\n });\n // FIXME: clean up tracks, local streams, remote streams, etc\n this._isClosed = true;\n this._updateSignalingState('closed');\n };\n\n // Update the signaling state.\n RTCPeerConnection.prototype._updateSignalingState = function(newState) {\n this.signalingState = newState;\n var event = new Event('signalingstatechange');\n this._dispatchEvent('signalingstatechange', event);\n };\n\n // Determine whether to fire the negotiationneeded event.\n RTCPeerConnection.prototype._maybeFireNegotiationNeeded = function() {\n var pc = this;\n if (this.signalingState !== 'stable' || this.needNegotiation === true) {\n return;\n }\n this.needNegotiation = true;\n window.setTimeout(function() {\n if (pc.needNegotiation) {\n pc.needNegotiation = false;\n var event = new Event('negotiationneeded');\n pc._dispatchEvent('negotiationneeded', event);\n }\n }, 0);\n };\n\n // Update the ice connection state.\n RTCPeerConnection.prototype._updateIceConnectionState = function() {\n var newState;\n var states = {\n 'new': 0,\n closed: 0,\n checking: 0,\n connected: 0,\n completed: 0,\n disconnected: 0,\n failed: 0\n };\n this.transceivers.forEach(function(transceiver) {\n if (transceiver.iceTransport && !transceiver.rejected) {\n states[transceiver.iceTransport.state]++;\n }\n });\n\n newState = 'new';\n if (states.failed > 0) {\n newState = 'failed';\n } else if (states.checking > 0) {\n newState = 'checking';\n } else if (states.disconnected > 0) {\n newState = 'disconnected';\n } else if (states.new > 0) {\n newState = 'new';\n } else if (states.connected > 0) {\n newState = 'connected';\n } else if (states.completed > 0) {\n newState = 'completed';\n }\n\n if (newState !== this.iceConnectionState) {\n this.iceConnectionState = newState;\n var event = new Event('iceconnectionstatechange');\n this._dispatchEvent('iceconnectionstatechange', event);\n }\n };\n\n // Update the connection state.\n RTCPeerConnection.prototype._updateConnectionState = function() {\n var newState;\n var states = {\n 'new': 0,\n closed: 0,\n connecting: 0,\n connected: 0,\n completed: 0,\n disconnected: 0,\n failed: 0\n };\n this.transceivers.forEach(function(transceiver) {\n if (transceiver.iceTransport && transceiver.dtlsTransport &&\n !transceiver.rejected) {\n states[transceiver.iceTransport.state]++;\n states[transceiver.dtlsTransport.state]++;\n }\n });\n // ICETransport.completed and connected are the same for this purpose.\n states.connected += states.completed;\n\n newState = 'new';\n if (states.failed > 0) {\n newState = 'failed';\n } else if (states.connecting > 0) {\n newState = 'connecting';\n } else if (states.disconnected > 0) {\n newState = 'disconnected';\n } else if (states.new > 0) {\n newState = 'new';\n } else if (states.connected > 0) {\n newState = 'connected';\n }\n\n if (newState !== this.connectionState) {\n this.connectionState = newState;\n var event = new Event('connectionstatechange');\n this._dispatchEvent('connectionstatechange', event);\n }\n };\n\n RTCPeerConnection.prototype.createOffer = function() {\n var pc = this;\n\n if (pc._isClosed) {\n return Promise.reject(makeError('InvalidStateError',\n 'Can not call createOffer after close'));\n }\n\n var numAudioTracks = pc.transceivers.filter(function(t) {\n return t.kind === 'audio';\n }).length;\n var numVideoTracks = pc.transceivers.filter(function(t) {\n return t.kind === 'video';\n }).length;\n\n // Determine number of audio and video tracks we need to send/recv.\n var offerOptions = arguments[0];\n if (offerOptions) {\n // Reject Chrome legacy constraints.\n if (offerOptions.mandatory || offerOptions.optional) {\n throw new TypeError(\n 'Legacy mandatory/optional constraints not supported.');\n }\n if (offerOptions.offerToReceiveAudio !== undefined) {\n if (offerOptions.offerToReceiveAudio === true) {\n numAudioTracks = 1;\n } else if (offerOptions.offerToReceiveAudio === false) {\n numAudioTracks = 0;\n } else {\n numAudioTracks = offerOptions.offerToReceiveAudio;\n }\n }\n if (offerOptions.offerToReceiveVideo !== undefined) {\n if (offerOptions.offerToReceiveVideo === true) {\n numVideoTracks = 1;\n } else if (offerOptions.offerToReceiveVideo === false) {\n numVideoTracks = 0;\n } else {\n numVideoTracks = offerOptions.offerToReceiveVideo;\n }\n }\n }\n\n pc.transceivers.forEach(function(transceiver) {\n if (transceiver.kind === 'audio') {\n numAudioTracks--;\n if (numAudioTracks < 0) {\n transceiver.wantReceive = false;\n }\n } else if (transceiver.kind === 'video') {\n numVideoTracks--;\n if (numVideoTracks < 0) {\n transceiver.wantReceive = false;\n }\n }\n });\n\n // Create M-lines for recvonly streams.\n while (numAudioTracks > 0 || numVideoTracks > 0) {\n if (numAudioTracks > 0) {\n pc._createTransceiver('audio');\n numAudioTracks--;\n }\n if (numVideoTracks > 0) {\n pc._createTransceiver('video');\n numVideoTracks--;\n }\n }\n\n var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId,\n pc._sdpSessionVersion++);\n pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {\n // For each track, create an ice gatherer, ice transport,\n // dtls transport, potentially rtpsender and rtpreceiver.\n var track = transceiver.track;\n var kind = transceiver.kind;\n var mid = transceiver.mid || SDPUtils.generateIdentifier();\n transceiver.mid = mid;\n\n if (!transceiver.iceGatherer) {\n transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex,\n pc.usingBundle);\n }\n\n var localCapabilities = window.RTCRtpSender.getCapabilities(kind);\n // filter RTX until additional stuff needed for RTX is implemented\n // in adapter.js\n if (edgeVersion < 15019) {\n localCapabilities.codecs = localCapabilities.codecs.filter(\n function(codec) {\n return codec.name !== 'rtx';\n });\n }\n localCapabilities.codecs.forEach(function(codec) {\n // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552\n // by adding level-asymmetry-allowed=1\n if (codec.name === 'H264' &&\n codec.parameters['level-asymmetry-allowed'] === undefined) {\n codec.parameters['level-asymmetry-allowed'] = '1';\n }\n\n // for subsequent offers, we might have to re-use the payload\n // type of the last offer.\n if (transceiver.remoteCapabilities &&\n transceiver.remoteCapabilities.codecs) {\n transceiver.remoteCapabilities.codecs.forEach(function(remoteCodec) {\n if (codec.name.toLowerCase() === remoteCodec.name.toLowerCase() &&\n codec.clockRate === remoteCodec.clockRate) {\n codec.preferredPayloadType = remoteCodec.payloadType;\n }\n });\n }\n });\n localCapabilities.headerExtensions.forEach(function(hdrExt) {\n var remoteExtensions = transceiver.remoteCapabilities &&\n transceiver.remoteCapabilities.headerExtensions || [];\n remoteExtensions.forEach(function(rHdrExt) {\n if (hdrExt.uri === rHdrExt.uri) {\n hdrExt.id = rHdrExt.id;\n }\n });\n });\n\n // generate an ssrc now, to be used later in rtpSender.send\n var sendEncodingParameters = transceiver.sendEncodingParameters || [{\n ssrc: (2 * sdpMLineIndex + 1) * 1001\n }];\n if (track) {\n // add RTX\n if (edgeVersion >= 15019 && kind === 'video' &&\n !sendEncodingParameters[0].rtx) {\n sendEncodingParameters[0].rtx = {\n ssrc: sendEncodingParameters[0].ssrc + 1\n };\n }\n }\n\n if (transceiver.wantReceive) {\n transceiver.rtpReceiver = new window.RTCRtpReceiver(\n transceiver.dtlsTransport, kind);\n }\n\n transceiver.localCapabilities = localCapabilities;\n transceiver.sendEncodingParameters = sendEncodingParameters;\n });\n\n // always offer BUNDLE and dispose on return if not supported.\n if (pc._config.bundlePolicy !== 'max-compat') {\n sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) {\n return t.mid;\n }).join(' ') + '\\r\\n';\n }\n sdp += 'a=ice-options:trickle\\r\\n';\n\n pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {\n sdp += writeMediaSection(transceiver, transceiver.localCapabilities,\n 'offer', transceiver.stream, pc._dtlsRole);\n sdp += 'a=rtcp-rsize\\r\\n';\n\n if (transceiver.iceGatherer && pc.iceGatheringState !== 'new' &&\n (sdpMLineIndex === 0 || !pc.usingBundle)) {\n transceiver.iceGatherer.getLocalCandidates().forEach(function(cand) {\n cand.component = 1;\n sdp += 'a=' + SDPUtils.writeCandidate(cand) + '\\r\\n';\n });\n\n if (transceiver.iceGatherer.state === 'completed') {\n sdp += 'a=end-of-candidates\\r\\n';\n }\n }\n });\n\n var desc = new window.RTCSessionDescription({\n type: 'offer',\n sdp: sdp\n });\n return Promise.resolve(desc);\n };\n\n RTCPeerConnection.prototype.createAnswer = function() {\n var pc = this;\n\n if (pc._isClosed) {\n return Promise.reject(makeError('InvalidStateError',\n 'Can not call createAnswer after close'));\n }\n\n if (!(pc.signalingState === 'have-remote-offer' ||\n pc.signalingState === 'have-local-pranswer')) {\n return Promise.reject(makeError('InvalidStateError',\n 'Can not call createAnswer in signalingState ' + pc.signalingState));\n }\n\n var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId,\n pc._sdpSessionVersion++);\n if (pc.usingBundle) {\n sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) {\n return t.mid;\n }).join(' ') + '\\r\\n';\n }\n sdp += 'a=ice-options:trickle\\r\\n';\n\n var mediaSectionsInOffer = SDPUtils.getMediaSections(\n pc._remoteDescription.sdp).length;\n pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {\n if (sdpMLineIndex + 1 > mediaSectionsInOffer) {\n return;\n }\n if (transceiver.rejected) {\n if (transceiver.kind === 'application') {\n if (transceiver.protocol === 'DTLS/SCTP') { // legacy fmt\n sdp += 'm=application 0 DTLS/SCTP 5000\\r\\n';\n } else {\n sdp += 'm=application 0 ' + transceiver.protocol +\n ' webrtc-datachannel\\r\\n';\n }\n } else if (transceiver.kind === 'audio') {\n sdp += 'm=audio 0 UDP/TLS/RTP/SAVPF 0\\r\\n' +\n 'a=rtpmap:0 PCMU/8000\\r\\n';\n } else if (transceiver.kind === 'video') {\n sdp += 'm=video 0 UDP/TLS/RTP/SAVPF 120\\r\\n' +\n 'a=rtpmap:120 VP8/90000\\r\\n';\n }\n sdp += 'c=IN IP4 0.0.0.0\\r\\n' +\n 'a=inactive\\r\\n' +\n 'a=mid:' + transceiver.mid + '\\r\\n';\n return;\n }\n\n // FIXME: look at direction.\n if (transceiver.stream) {\n var localTrack;\n if (transceiver.kind === 'audio') {\n localTrack = transceiver.stream.getAudioTracks()[0];\n } else if (transceiver.kind === 'video') {\n localTrack = transceiver.stream.getVideoTracks()[0];\n }\n if (localTrack) {\n // add RTX\n if (edgeVersion >= 15019 && transceiver.kind === 'video' &&\n !transceiver.sendEncodingParameters[0].rtx) {\n transceiver.sendEncodingParameters[0].rtx = {\n ssrc: transceiver.sendEncodingParameters[0].ssrc + 1\n };\n }\n }\n }\n\n // Calculate intersection of capabilities.\n var commonCapabilities = getCommonCapabilities(\n transceiver.localCapabilities,\n transceiver.remoteCapabilities);\n\n var hasRtx = commonCapabilities.codecs.filter(function(c) {\n return c.name.toLowerCase() === 'rtx';\n }).length;\n if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) {\n delete transceiver.sendEncodingParameters[0].rtx;\n }\n\n sdp += writeMediaSection(transceiver, commonCapabilities,\n 'answer', transceiver.stream, pc._dtlsRole);\n if (transceiver.rtcpParameters &&\n transceiver.rtcpParameters.reducedSize) {\n sdp += 'a=rtcp-rsize\\r\\n';\n }\n });\n\n var desc = new window.RTCSessionDescription({\n type: 'answer',\n sdp: sdp\n });\n return Promise.resolve(desc);\n };\n\n RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n var pc = this;\n var sections;\n if (candidate && !(candidate.sdpMLineIndex !== undefined ||\n candidate.sdpMid)) {\n return Promise.reject(new TypeError('sdpMLineIndex or sdpMid required'));\n }\n\n // TODO: needs to go into ops queue.\n return new Promise(function(resolve, reject) {\n if (!pc._remoteDescription) {\n return reject(makeError('InvalidStateError',\n 'Can not add ICE candidate without a remote description'));\n } else if (!candidate || candidate.candidate === '') {\n for (var j = 0; j < pc.transceivers.length; j++) {\n if (pc.transceivers[j].rejected) {\n continue;\n }\n pc.transceivers[j].iceTransport.addRemoteCandidate({});\n sections = SDPUtils.getMediaSections(pc._remoteDescription.sdp);\n sections[j] += 'a=end-of-candidates\\r\\n';\n pc._remoteDescription.sdp =\n SDPUtils.getDescription(pc._remoteDescription.sdp) +\n sections.join('');\n if (pc.usingBundle) {\n break;\n }\n }\n } else {\n var sdpMLineIndex = candidate.sdpMLineIndex;\n if (candidate.sdpMid) {\n for (var i = 0; i < pc.transceivers.length; i++) {\n if (pc.transceivers[i].mid === candidate.sdpMid) {\n sdpMLineIndex = i;\n break;\n }\n }\n }\n var transceiver = pc.transceivers[sdpMLineIndex];\n if (transceiver) {\n if (transceiver.rejected) {\n return resolve();\n }\n var cand = Object.keys(candidate.candidate).length > 0 ?\n SDPUtils.parseCandidate(candidate.candidate) : {};\n // Ignore Chrome's invalid candidates since Edge does not like them.\n if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) {\n return resolve();\n }\n // Ignore RTCP candidates, we assume RTCP-MUX.\n if (cand.component && cand.component !== 1) {\n return resolve();\n }\n // when using bundle, avoid adding candidates to the wrong\n // ice transport. And avoid adding candidates added in the SDP.\n if (sdpMLineIndex === 0 || (sdpMLineIndex > 0 &&\n transceiver.iceTransport !== pc.transceivers[0].iceTransport)) {\n if (!maybeAddCandidate(transceiver.iceTransport, cand)) {\n return reject(makeError('OperationError',\n 'Can not add ICE candidate'));\n }\n }\n\n // update the remoteDescription.\n var candidateString = candidate.candidate.trim();\n if (candidateString.indexOf('a=') === 0) {\n candidateString = candidateString.substr(2);\n }\n sections = SDPUtils.getMediaSections(pc._remoteDescription.sdp);\n sections[sdpMLineIndex] += 'a=' +\n (cand.type ? candidateString : 'end-of-candidates')\n + '\\r\\n';\n pc._remoteDescription.sdp =\n SDPUtils.getDescription(pc._remoteDescription.sdp) +\n sections.join('');\n } else {\n return reject(makeError('OperationError',\n 'Can not add ICE candidate'));\n }\n }\n resolve();\n });\n };\n\n RTCPeerConnection.prototype.getStats = function(selector) {\n if (selector && selector instanceof window.MediaStreamTrack) {\n var senderOrReceiver = null;\n this.transceivers.forEach(function(transceiver) {\n if (transceiver.rtpSender &&\n transceiver.rtpSender.track === selector) {\n senderOrReceiver = transceiver.rtpSender;\n } else if (transceiver.rtpReceiver &&\n transceiver.rtpReceiver.track === selector) {\n senderOrReceiver = transceiver.rtpReceiver;\n }\n });\n if (!senderOrReceiver) {\n throw makeError('InvalidAccessError', 'Invalid selector.');\n }\n return senderOrReceiver.getStats();\n }\n\n var promises = [];\n this.transceivers.forEach(function(transceiver) {\n ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n 'dtlsTransport'].forEach(function(method) {\n if (transceiver[method]) {\n promises.push(transceiver[method].getStats());\n }\n });\n });\n return Promise.all(promises).then(function(allStats) {\n var results = new Map();\n allStats.forEach(function(stats) {\n stats.forEach(function(stat) {\n results.set(stat.id, stat);\n });\n });\n return results;\n });\n };\n\n // fix low-level stat names and return Map instead of object.\n var ortcObjects = ['RTCRtpSender', 'RTCRtpReceiver', 'RTCIceGatherer',\n 'RTCIceTransport', 'RTCDtlsTransport'];\n ortcObjects.forEach(function(ortcObjectName) {\n var obj = window[ortcObjectName];\n if (obj && obj.prototype && obj.prototype.getStats) {\n var nativeGetstats = obj.prototype.getStats;\n obj.prototype.getStats = function() {\n return nativeGetstats.apply(this)\n .then(function(nativeStats) {\n var mapStats = new Map();\n Object.keys(nativeStats).forEach(function(id) {\n nativeStats[id].type = fixStatsType(nativeStats[id]);\n mapStats.set(id, nativeStats[id]);\n });\n return mapStats;\n });\n };\n }\n });\n\n // legacy callback shims. Should be moved to adapter.js some days.\n var methods = ['createOffer', 'createAnswer'];\n methods.forEach(function(method) {\n var nativeMethod = RTCPeerConnection.prototype[method];\n RTCPeerConnection.prototype[method] = function() {\n var args = arguments;\n if (typeof args[0] === 'function' ||\n typeof args[1] === 'function') { // legacy\n return nativeMethod.apply(this, [arguments[2]])\n .then(function(description) {\n if (typeof args[0] === 'function') {\n args[0].apply(null, [description]);\n }\n }, function(error) {\n if (typeof args[1] === 'function') {\n args[1].apply(null, [error]);\n }\n });\n }\n return nativeMethod.apply(this, arguments);\n };\n });\n\n methods = ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'];\n methods.forEach(function(method) {\n var nativeMethod = RTCPeerConnection.prototype[method];\n RTCPeerConnection.prototype[method] = function() {\n var args = arguments;\n if (typeof args[1] === 'function' ||\n typeof args[2] === 'function') { // legacy\n return nativeMethod.apply(this, arguments)\n .then(function() {\n if (typeof args[1] === 'function') {\n args[1].apply(null);\n }\n }, function(error) {\n if (typeof args[2] === 'function') {\n args[2].apply(null, [error]);\n }\n });\n }\n return nativeMethod.apply(this, arguments);\n };\n });\n\n // getStats is special. It doesn't have a spec legacy method yet we support\n // getStats(something, cb) without error callbacks.\n ['getStats'].forEach(function(method) {\n var nativeMethod = RTCPeerConnection.prototype[method];\n RTCPeerConnection.prototype[method] = function() {\n var args = arguments;\n if (typeof args[1] === 'function') {\n return nativeMethod.apply(this, arguments)\n .then(function() {\n if (typeof args[1] === 'function') {\n args[1].apply(null);\n }\n });\n }\n return nativeMethod.apply(this, arguments);\n };\n });\n\n return RTCPeerConnection;\n};\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n /* eslint-env node */\n'use strict';\n\nexport function shimGetUserMedia(window) {\n const navigator = window && window.navigator;\n\n const shimError_ = function(e) {\n return {\n name: {PermissionDeniedError: 'NotAllowedError'}[e.name] || e.name,\n message: e.message,\n constraint: e.constraint,\n toString() {\n return this.name;\n }\n };\n };\n\n // getUserMedia error shim.\n const origGetUserMedia = navigator.mediaDevices.getUserMedia.\n bind(navigator.mediaDevices);\n navigator.mediaDevices.getUserMedia = function(c) {\n return origGetUserMedia(c).catch(e => Promise.reject(shimError_(e)));\n };\n}\n","/*\n * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n /* eslint-env node */\n'use strict';\n\nexport function shimGetDisplayMedia(window) {\n if (!('getDisplayMedia' in window.navigator)) {\n return;\n }\n if (!(window.navigator.mediaDevices)) {\n return;\n }\n if (window.navigator.mediaDevices &&\n 'getDisplayMedia' in window.navigator.mediaDevices) {\n return;\n }\n window.navigator.mediaDevices.getDisplayMedia =\n window.navigator.getDisplayMedia.bind(window.navigator);\n}\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nimport * as utils from '../utils';\nimport {filterIceServers} from './filtericeservers';\nimport shimRTCPeerConnection from 'rtcpeerconnection-shim';\n\nexport {shimGetUserMedia} from './getusermedia';\nexport {shimGetDisplayMedia} from './getdisplaymedia';\n\nexport function shimPeerConnection(window, browserDetails) {\n if (window.RTCIceGatherer) {\n if (!window.RTCIceCandidate) {\n window.RTCIceCandidate = function RTCIceCandidate(args) {\n return args;\n };\n }\n if (!window.RTCSessionDescription) {\n window.RTCSessionDescription = function RTCSessionDescription(args) {\n return args;\n };\n }\n // this adds an additional event listener to MediaStrackTrack that signals\n // when a tracks enabled property was changed. Workaround for a bug in\n // addStream, see below. No longer required in 15025+\n if (browserDetails.version < 15025) {\n const origMSTEnabled = Object.getOwnPropertyDescriptor(\n window.MediaStreamTrack.prototype, 'enabled');\n Object.defineProperty(window.MediaStreamTrack.prototype, 'enabled', {\n set(value) {\n origMSTEnabled.set.call(this, value);\n const ev = new Event('enabled');\n ev.enabled = value;\n this.dispatchEvent(ev);\n }\n });\n }\n }\n\n // ORTC defines the DTMF sender a bit different.\n // https://github.com/w3c/ortc/issues/714\n if (window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) {\n Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', {\n get() {\n if (this._dtmf === undefined) {\n if (this.track.kind === 'audio') {\n this._dtmf = new window.RTCDtmfSender(this);\n } else if (this.track.kind === 'video') {\n this._dtmf = null;\n }\n }\n return this._dtmf;\n }\n });\n }\n // Edge currently only implements the RTCDtmfSender, not the\n // RTCDTMFSender alias. See http://draft.ortc.org/#rtcdtmfsender2*\n if (window.RTCDtmfSender && !window.RTCDTMFSender) {\n window.RTCDTMFSender = window.RTCDtmfSender;\n }\n\n const RTCPeerConnectionShim = shimRTCPeerConnection(window,\n browserDetails.version);\n window.RTCPeerConnection = function RTCPeerConnection(config) {\n if (config && config.iceServers) {\n config.iceServers = filterIceServers(config.iceServers,\n browserDetails.version);\n utils.log('ICE servers after filtering:', config.iceServers);\n }\n return new RTCPeerConnectionShim(config);\n };\n window.RTCPeerConnection.prototype = RTCPeerConnectionShim.prototype;\n}\n\nexport function shimReplaceTrack(window) {\n // ORTC has replaceTrack -- https://github.com/w3c/ortc/issues/614\n if (window.RTCRtpSender &&\n !('replaceTrack' in window.RTCRtpSender.prototype)) {\n window.RTCRtpSender.prototype.replaceTrack =\n window.RTCRtpSender.prototype.setTrack;\n }\n}\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nimport * as utils from '../utils';\n\nexport function shimGetUserMedia(window, browserDetails) {\n const navigator = window && window.navigator;\n const MediaStreamTrack = window && window.MediaStreamTrack;\n\n navigator.getUserMedia = function(constraints, onSuccess, onError) {\n // Replace Firefox 44+'s deprecation warning with unprefixed version.\n utils.deprecated('navigator.getUserMedia',\n 'navigator.mediaDevices.getUserMedia');\n navigator.mediaDevices.getUserMedia(constraints).then(onSuccess, onError);\n };\n\n if (!(browserDetails.version > 55 &&\n 'autoGainControl' in navigator.mediaDevices.getSupportedConstraints())) {\n const remap = function(obj, a, b) {\n if (a in obj && !(b in obj)) {\n obj[b] = obj[a];\n delete obj[a];\n }\n };\n\n const nativeGetUserMedia = navigator.mediaDevices.getUserMedia.\n bind(navigator.mediaDevices);\n navigator.mediaDevices.getUserMedia = function(c) {\n if (typeof c === 'object' && typeof c.audio === 'object') {\n c = JSON.parse(JSON.stringify(c));\n remap(c.audio, 'autoGainControl', 'mozAutoGainControl');\n remap(c.audio, 'noiseSuppression', 'mozNoiseSuppression');\n }\n return nativeGetUserMedia(c);\n };\n\n if (MediaStreamTrack && MediaStreamTrack.prototype.getSettings) {\n const nativeGetSettings = MediaStreamTrack.prototype.getSettings;\n MediaStreamTrack.prototype.getSettings = function() {\n const obj = nativeGetSettings.apply(this, arguments);\n remap(obj, 'mozAutoGainControl', 'autoGainControl');\n remap(obj, 'mozNoiseSuppression', 'noiseSuppression');\n return obj;\n };\n }\n\n if (MediaStreamTrack && MediaStreamTrack.prototype.applyConstraints) {\n const nativeApplyConstraints =\n MediaStreamTrack.prototype.applyConstraints;\n MediaStreamTrack.prototype.applyConstraints = function(c) {\n if (this.kind === 'audio' && typeof c === 'object') {\n c = JSON.parse(JSON.stringify(c));\n remap(c, 'autoGainControl', 'mozAutoGainControl');\n remap(c, 'noiseSuppression', 'mozNoiseSuppression');\n }\n return nativeApplyConstraints.apply(this, [c]);\n };\n }\n }\n}\n","/*\n * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nexport function shimGetDisplayMedia(window, preferredMediaSource) {\n if (window.navigator.mediaDevices &&\n 'getDisplayMedia' in window.navigator.mediaDevices) {\n return;\n }\n if (!(window.navigator.mediaDevices)) {\n return;\n }\n window.navigator.mediaDevices.getDisplayMedia =\n function getDisplayMedia(constraints) {\n if (!(constraints && constraints.video)) {\n const err = new DOMException('getDisplayMedia without video ' +\n 'constraints is undefined');\n err.name = 'NotFoundError';\n // from https://heycam.github.io/webidl/#idl-DOMException-error-names\n err.code = 8;\n return Promise.reject(err);\n }\n if (constraints.video === true) {\n constraints.video = {mediaSource: preferredMediaSource};\n } else {\n constraints.video.mediaSource = preferredMediaSource;\n }\n return window.navigator.mediaDevices.getUserMedia(constraints);\n };\n}\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nimport * as utils from '../utils';\nexport {shimGetUserMedia} from './getusermedia';\nexport {shimGetDisplayMedia} from './getdisplaymedia';\n\nexport function shimOnTrack(window) {\n if (typeof window === 'object' && window.RTCTrackEvent &&\n ('receiver' in window.RTCTrackEvent.prototype) &&\n !('transceiver' in window.RTCTrackEvent.prototype)) {\n Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', {\n get() {\n return {receiver: this.receiver};\n }\n });\n }\n}\n\nexport function shimPeerConnection(window, browserDetails) {\n if (typeof window !== 'object' ||\n !(window.RTCPeerConnection || window.mozRTCPeerConnection)) {\n return; // probably media.peerconnection.enabled=false in about:config\n }\n if (!window.RTCPeerConnection && window.mozRTCPeerConnection) {\n // very basic support for old versions.\n window.RTCPeerConnection = window.mozRTCPeerConnection;\n }\n\n if (browserDetails.version < 53) {\n // shim away need for obsolete RTCIceCandidate/RTCSessionDescription.\n ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate']\n .forEach(function(method) {\n const nativeMethod = window.RTCPeerConnection.prototype[method];\n const methodObj = {[method]() {\n arguments[0] = new ((method === 'addIceCandidate') ?\n window.RTCIceCandidate :\n window.RTCSessionDescription)(arguments[0]);\n return nativeMethod.apply(this, arguments);\n }};\n window.RTCPeerConnection.prototype[method] = methodObj[method];\n });\n }\n\n const modernStatsTypes = {\n inboundrtp: 'inbound-rtp',\n outboundrtp: 'outbound-rtp',\n candidatepair: 'candidate-pair',\n localcandidate: 'local-candidate',\n remotecandidate: 'remote-candidate'\n };\n\n const nativeGetStats = window.RTCPeerConnection.prototype.getStats;\n window.RTCPeerConnection.prototype.getStats = function getStats() {\n const [selector, onSucc, onErr] = arguments;\n return nativeGetStats.apply(this, [selector || null])\n .then(stats => {\n if (browserDetails.version < 53 && !onSucc) {\n // Shim only promise getStats with spec-hyphens in type names\n // Leave callback version alone; misc old uses of forEach before Map\n try {\n stats.forEach(stat => {\n stat.type = modernStatsTypes[stat.type] || stat.type;\n });\n } catch (e) {\n if (e.name !== 'TypeError') {\n throw e;\n }\n // Avoid TypeError: \"type\" is read-only, in old versions. 34-43ish\n stats.forEach((stat, i) => {\n stats.set(i, Object.assign({}, stat, {\n type: modernStatsTypes[stat.type] || stat.type\n }));\n });\n }\n }\n return stats;\n })\n .then(onSucc, onErr);\n };\n}\n\nexport function shimSenderGetStats(window) {\n if (!(typeof window === 'object' && window.RTCPeerConnection &&\n window.RTCRtpSender)) {\n return;\n }\n if (window.RTCRtpSender && 'getStats' in window.RTCRtpSender.prototype) {\n return;\n }\n const origGetSenders = window.RTCPeerConnection.prototype.getSenders;\n if (origGetSenders) {\n window.RTCPeerConnection.prototype.getSenders = function getSenders() {\n const senders = origGetSenders.apply(this, []);\n senders.forEach(sender => sender._pc = this);\n return senders;\n };\n }\n\n const origAddTrack = window.RTCPeerConnection.prototype.addTrack;\n if (origAddTrack) {\n window.RTCPeerConnection.prototype.addTrack = function addTrack() {\n const sender = origAddTrack.apply(this, arguments);\n sender._pc = this;\n return sender;\n };\n }\n window.RTCRtpSender.prototype.getStats = function getStats() {\n return this.track ? this._pc.getStats(this.track) :\n Promise.resolve(new Map());\n };\n}\n\nexport function shimReceiverGetStats(window) {\n if (!(typeof window === 'object' && window.RTCPeerConnection &&\n window.RTCRtpSender)) {\n return;\n }\n if (window.RTCRtpSender && 'getStats' in window.RTCRtpReceiver.prototype) {\n return;\n }\n const origGetReceivers = window.RTCPeerConnection.prototype.getReceivers;\n if (origGetReceivers) {\n window.RTCPeerConnection.prototype.getReceivers = function getReceivers() {\n const receivers = origGetReceivers.apply(this, []);\n receivers.forEach(receiver => receiver._pc = this);\n return receivers;\n };\n }\n utils.wrapPeerConnectionEvent(window, 'track', e => {\n e.receiver._pc = e.srcElement;\n return e;\n });\n window.RTCRtpReceiver.prototype.getStats = function getStats() {\n return this._pc.getStats(this.track);\n };\n}\n\nexport function shimRemoveStream(window) {\n if (!window.RTCPeerConnection ||\n 'removeStream' in window.RTCPeerConnection.prototype) {\n return;\n }\n window.RTCPeerConnection.prototype.removeStream =\n function removeStream(stream) {\n utils.deprecated('removeStream', 'removeTrack');\n this.getSenders().forEach(sender => {\n if (sender.track && stream.getTracks().includes(sender.track)) {\n this.removeTrack(sender);\n }\n });\n };\n}\n\nexport function shimRTCDataChannel(window) {\n // rename DataChannel to RTCDataChannel (native fix in FF60):\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1173851\n if (window.DataChannel && !window.RTCDataChannel) {\n window.RTCDataChannel = window.DataChannel;\n }\n}\n\nexport function shimAddTransceiver(window) {\n // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647\n // Firefox ignores the init sendEncodings options passed to addTransceiver\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918\n if (!(typeof window === 'object' && window.RTCPeerConnection)) {\n return;\n }\n const origAddTransceiver = window.RTCPeerConnection.prototype.addTransceiver;\n if (origAddTransceiver) {\n window.RTCPeerConnection.prototype.addTransceiver =\n function addTransceiver() {\n this.setParametersPromises = [];\n const initParameters = arguments[1];\n const shouldPerformCheck = initParameters &&\n 'sendEncodings' in initParameters;\n if (shouldPerformCheck) {\n // If sendEncodings params are provided, validate grammar\n initParameters.sendEncodings.forEach((encodingParam) => {\n if ('rid' in encodingParam) {\n const ridRegex = /^[a-z0-9]{0,16}$/i;\n if (!ridRegex.test(encodingParam.rid)) {\n throw new TypeError('Invalid RID value provided.');\n }\n }\n if ('scaleResolutionDownBy' in encodingParam) {\n if (!(parseFloat(encodingParam.scaleResolutionDownBy) >= 1.0)) {\n throw new RangeError('scale_resolution_down_by must be >= 1.0');\n }\n }\n if ('maxFramerate' in encodingParam) {\n if (!(parseFloat(encodingParam.maxFramerate) >= 0)) {\n throw new RangeError('max_framerate must be >= 0.0');\n }\n }\n });\n }\n const transceiver = origAddTransceiver.apply(this, arguments);\n if (shouldPerformCheck) {\n // Check if the init options were applied. If not we do this in an\n // asynchronous way and save the promise reference in a global object.\n // This is an ugly hack, but at the same time is way more robust than\n // checking the sender parameters before and after the createOffer\n // Also note that after the createoffer we are not 100% sure that\n // the params were asynchronously applied so we might miss the\n // opportunity to recreate offer.\n const {sender} = transceiver;\n const params = sender.getParameters();\n if (!('encodings' in params) ||\n // Avoid being fooled by patched getParameters() below.\n (params.encodings.length === 1 &&\n Object.keys(params.encodings[0]).length === 0)) {\n params.encodings = initParameters.sendEncodings;\n sender.sendEncodings = initParameters.sendEncodings;\n this.setParametersPromises.push(sender.setParameters(params)\n .then(() => {\n delete sender.sendEncodings;\n }).catch(() => {\n delete sender.sendEncodings;\n })\n );\n }\n }\n return transceiver;\n };\n }\n}\n\nexport function shimGetParameters(window) {\n if (!(typeof window === 'object' && window.RTCRtpSender)) {\n return;\n }\n const origGetParameters = window.RTCRtpSender.prototype.getParameters;\n if (origGetParameters) {\n window.RTCRtpSender.prototype.getParameters =\n function getParameters() {\n const params = origGetParameters.apply(this, arguments);\n if (!('encodings' in params)) {\n params.encodings = [].concat(this.sendEncodings || [{}]);\n }\n return params;\n };\n }\n}\n\nexport function shimCreateOffer(window) {\n // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647\n // Firefox ignores the init sendEncodings options passed to addTransceiver\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918\n if (!(typeof window === 'object' && window.RTCPeerConnection)) {\n return;\n }\n const origCreateOffer = window.RTCPeerConnection.prototype.createOffer;\n window.RTCPeerConnection.prototype.createOffer = function createOffer() {\n if (this.setParametersPromises && this.setParametersPromises.length) {\n return Promise.all(this.setParametersPromises)\n .then(() => {\n return origCreateOffer.apply(this, arguments);\n })\n .finally(() => {\n this.setParametersPromises = [];\n });\n }\n return origCreateOffer.apply(this, arguments);\n };\n}\n\nexport function shimCreateAnswer(window) {\n // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647\n // Firefox ignores the init sendEncodings options passed to addTransceiver\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918\n if (!(typeof window === 'object' && window.RTCPeerConnection)) {\n return;\n }\n const origCreateAnswer = window.RTCPeerConnection.prototype.createAnswer;\n window.RTCPeerConnection.prototype.createAnswer = function createAnswer() {\n if (this.setParametersPromises && this.setParametersPromises.length) {\n return Promise.all(this.setParametersPromises)\n .then(() => {\n return origCreateAnswer.apply(this, arguments);\n })\n .finally(() => {\n this.setParametersPromises = [];\n });\n }\n return origCreateAnswer.apply(this, arguments);\n };\n}\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n'use strict';\nimport * as utils from '../utils';\n\nexport function shimLocalStreamsAPI(window) {\n if (typeof window !== 'object' || !window.RTCPeerConnection) {\n return;\n }\n if (!('getLocalStreams' in window.RTCPeerConnection.prototype)) {\n window.RTCPeerConnection.prototype.getLocalStreams =\n function getLocalStreams() {\n if (!this._localStreams) {\n this._localStreams = [];\n }\n return this._localStreams;\n };\n }\n if (!('addStream' in window.RTCPeerConnection.prototype)) {\n const _addTrack = window.RTCPeerConnection.prototype.addTrack;\n window.RTCPeerConnection.prototype.addStream = function addStream(stream) {\n if (!this._localStreams) {\n this._localStreams = [];\n }\n if (!this._localStreams.includes(stream)) {\n this._localStreams.push(stream);\n }\n // Try to emulate Chrome's behaviour of adding in audio-video order.\n // Safari orders by track id.\n stream.getAudioTracks().forEach(track => _addTrack.call(this, track,\n stream));\n stream.getVideoTracks().forEach(track => _addTrack.call(this, track,\n stream));\n };\n\n window.RTCPeerConnection.prototype.addTrack =\n function addTrack(track, ...streams) {\n if (streams) {\n streams.forEach((stream) => {\n if (!this._localStreams) {\n this._localStreams = [stream];\n } else if (!this._localStreams.includes(stream)) {\n this._localStreams.push(stream);\n }\n });\n }\n return _addTrack.apply(this, arguments);\n };\n }\n if (!('removeStream' in window.RTCPeerConnection.prototype)) {\n window.RTCPeerConnection.prototype.removeStream =\n function removeStream(stream) {\n if (!this._localStreams) {\n this._localStreams = [];\n }\n const index = this._localStreams.indexOf(stream);\n if (index === -1) {\n return;\n }\n this._localStreams.splice(index, 1);\n const tracks = stream.getTracks();\n this.getSenders().forEach(sender => {\n if (tracks.includes(sender.track)) {\n this.removeTrack(sender);\n }\n });\n };\n }\n}\n\nexport function shimRemoteStreamsAPI(window) {\n if (typeof window !== 'object' || !window.RTCPeerConnection) {\n return;\n }\n if (!('getRemoteStreams' in window.RTCPeerConnection.prototype)) {\n window.RTCPeerConnection.prototype.getRemoteStreams =\n function getRemoteStreams() {\n return this._remoteStreams ? this._remoteStreams : [];\n };\n }\n if (!('onaddstream' in window.RTCPeerConnection.prototype)) {\n Object.defineProperty(window.RTCPeerConnection.prototype, 'onaddstream', {\n get() {\n return this._onaddstream;\n },\n set(f) {\n if (this._onaddstream) {\n this.removeEventListener('addstream', this._onaddstream);\n this.removeEventListener('track', this._onaddstreampoly);\n }\n this.addEventListener('addstream', this._onaddstream = f);\n this.addEventListener('track', this._onaddstreampoly = (e) => {\n e.streams.forEach(stream => {\n if (!this._remoteStreams) {\n this._remoteStreams = [];\n }\n if (this._remoteStreams.includes(stream)) {\n return;\n }\n this._remoteStreams.push(stream);\n const event = new Event('addstream');\n event.stream = stream;\n this.dispatchEvent(event);\n });\n });\n }\n });\n const origSetRemoteDescription =\n window.RTCPeerConnection.prototype.setRemoteDescription;\n window.RTCPeerConnection.prototype.setRemoteDescription =\n function setRemoteDescription() {\n const pc = this;\n if (!this._onaddstreampoly) {\n this.addEventListener('track', this._onaddstreampoly = function(e) {\n e.streams.forEach(stream => {\n if (!pc._remoteStreams) {\n pc._remoteStreams = [];\n }\n if (pc._remoteStreams.indexOf(stream) >= 0) {\n return;\n }\n pc._remoteStreams.push(stream);\n const event = new Event('addstream');\n event.stream = stream;\n pc.dispatchEvent(event);\n });\n });\n }\n return origSetRemoteDescription.apply(pc, arguments);\n };\n }\n}\n\nexport function shimCallbacksAPI(window) {\n if (typeof window !== 'object' || !window.RTCPeerConnection) {\n return;\n }\n const prototype = window.RTCPeerConnection.prototype;\n const origCreateOffer = prototype.createOffer;\n const origCreateAnswer = prototype.createAnswer;\n const setLocalDescription = prototype.setLocalDescription;\n const setRemoteDescription = prototype.setRemoteDescription;\n const addIceCandidate = prototype.addIceCandidate;\n\n prototype.createOffer =\n function createOffer(successCallback, failureCallback) {\n const options = (arguments.length >= 2) ? arguments[2] : arguments[0];\n const promise = origCreateOffer.apply(this, [options]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n\n prototype.createAnswer =\n function createAnswer(successCallback, failureCallback) {\n const options = (arguments.length >= 2) ? arguments[2] : arguments[0];\n const promise = origCreateAnswer.apply(this, [options]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n\n let withCallback = function(description, successCallback, failureCallback) {\n const promise = setLocalDescription.apply(this, [description]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n prototype.setLocalDescription = withCallback;\n\n withCallback = function(description, successCallback, failureCallback) {\n const promise = setRemoteDescription.apply(this, [description]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n prototype.setRemoteDescription = withCallback;\n\n withCallback = function(candidate, successCallback, failureCallback) {\n const promise = addIceCandidate.apply(this, [candidate]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n prototype.addIceCandidate = withCallback;\n}\n\nexport function shimGetUserMedia(window) {\n const navigator = window && window.navigator;\n\n if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {\n // shim not needed in Safari 12.1\n const mediaDevices = navigator.mediaDevices;\n const _getUserMedia = mediaDevices.getUserMedia.bind(mediaDevices);\n navigator.mediaDevices.getUserMedia = (constraints) => {\n return _getUserMedia(shimConstraints(constraints));\n };\n }\n\n if (!navigator.getUserMedia && navigator.mediaDevices &&\n navigator.mediaDevices.getUserMedia) {\n navigator.getUserMedia = function getUserMedia(constraints, cb, errcb) {\n navigator.mediaDevices.getUserMedia(constraints)\n .then(cb, errcb);\n }.bind(navigator);\n }\n}\n\nexport function shimConstraints(constraints) {\n if (constraints && constraints.video !== undefined) {\n return Object.assign({},\n constraints,\n {video: utils.compactObject(constraints.video)}\n );\n }\n\n return constraints;\n}\n\nexport function shimRTCIceServerUrls(window) {\n if (!window.RTCPeerConnection) {\n return;\n }\n // migrate from non-spec RTCIceServer.url to RTCIceServer.urls\n const OrigPeerConnection = window.RTCPeerConnection;\n window.RTCPeerConnection =\n function RTCPeerConnection(pcConfig, pcConstraints) {\n if (pcConfig && pcConfig.iceServers) {\n const newIceServers = [];\n for (let i = 0; i < pcConfig.iceServers.length; i++) {\n let server = pcConfig.iceServers[i];\n if (!server.hasOwnProperty('urls') &&\n server.hasOwnProperty('url')) {\n utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls');\n server = JSON.parse(JSON.stringify(server));\n server.urls = server.url;\n delete server.url;\n newIceServers.push(server);\n } else {\n newIceServers.push(pcConfig.iceServers[i]);\n }\n }\n pcConfig.iceServers = newIceServers;\n }\n return new OrigPeerConnection(pcConfig, pcConstraints);\n };\n window.RTCPeerConnection.prototype = OrigPeerConnection.prototype;\n // wrap static methods. Currently just generateCertificate.\n if ('generateCertificate' in OrigPeerConnection) {\n Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', {\n get() {\n return OrigPeerConnection.generateCertificate;\n }\n });\n }\n}\n\nexport function shimTrackEventTransceiver(window) {\n // Add event.transceiver member over deprecated event.receiver\n if (typeof window === 'object' && window.RTCTrackEvent &&\n 'receiver' in window.RTCTrackEvent.prototype &&\n !('transceiver' in window.RTCTrackEvent.prototype)) {\n Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', {\n get() {\n return {receiver: this.receiver};\n }\n });\n }\n}\n\nexport function shimCreateOfferLegacy(window) {\n const origCreateOffer = window.RTCPeerConnection.prototype.createOffer;\n window.RTCPeerConnection.prototype.createOffer =\n function createOffer(offerOptions) {\n if (offerOptions) {\n if (typeof offerOptions.offerToReceiveAudio !== 'undefined') {\n // support bit values\n offerOptions.offerToReceiveAudio =\n !!offerOptions.offerToReceiveAudio;\n }\n const audioTransceiver = this.getTransceivers().find(transceiver =>\n transceiver.receiver.track.kind === 'audio');\n if (offerOptions.offerToReceiveAudio === false && audioTransceiver) {\n if (audioTransceiver.direction === 'sendrecv') {\n if (audioTransceiver.setDirection) {\n audioTransceiver.setDirection('sendonly');\n } else {\n audioTransceiver.direction = 'sendonly';\n }\n } else if (audioTransceiver.direction === 'recvonly') {\n if (audioTransceiver.setDirection) {\n audioTransceiver.setDirection('inactive');\n } else {\n audioTransceiver.direction = 'inactive';\n }\n }\n } else if (offerOptions.offerToReceiveAudio === true &&\n !audioTransceiver) {\n this.addTransceiver('audio');\n }\n\n if (typeof offerOptions.offerToReceiveVideo !== 'undefined') {\n // support bit values\n offerOptions.offerToReceiveVideo =\n !!offerOptions.offerToReceiveVideo;\n }\n const videoTransceiver = this.getTransceivers().find(transceiver =>\n transceiver.receiver.track.kind === 'video');\n if (offerOptions.offerToReceiveVideo === false && videoTransceiver) {\n if (videoTransceiver.direction === 'sendrecv') {\n if (videoTransceiver.setDirection) {\n videoTransceiver.setDirection('sendonly');\n } else {\n videoTransceiver.direction = 'sendonly';\n }\n } else if (videoTransceiver.direction === 'recvonly') {\n if (videoTransceiver.setDirection) {\n videoTransceiver.setDirection('inactive');\n } else {\n videoTransceiver.direction = 'inactive';\n }\n }\n } else if (offerOptions.offerToReceiveVideo === true &&\n !videoTransceiver) {\n this.addTransceiver('video');\n }\n }\n return origCreateOffer.apply(this, arguments);\n };\n}\n\nexport function shimAudioContext(window) {\n if (typeof window !== 'object' || window.AudioContext) {\n return;\n }\n window.AudioContext = window.webkitAudioContext;\n}\n","/*\n * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nimport SDPUtils from 'sdp';\nimport * as utils from './utils';\n\nexport function shimRTCIceCandidate(window) {\n // foundation is arbitrarily chosen as an indicator for full support for\n // https://w3c.github.io/webrtc-pc/#rtcicecandidate-interface\n if (!window.RTCIceCandidate || (window.RTCIceCandidate && 'foundation' in\n window.RTCIceCandidate.prototype)) {\n return;\n }\n\n const NativeRTCIceCandidate = window.RTCIceCandidate;\n window.RTCIceCandidate = function RTCIceCandidate(args) {\n // Remove the a= which shouldn't be part of the candidate string.\n if (typeof args === 'object' && args.candidate &&\n args.candidate.indexOf('a=') === 0) {\n args = JSON.parse(JSON.stringify(args));\n args.candidate = args.candidate.substr(2);\n }\n\n if (args.candidate && args.candidate.length) {\n // Augment the native candidate with the parsed fields.\n const nativeCandidate = new NativeRTCIceCandidate(args);\n const parsedCandidate = SDPUtils.parseCandidate(args.candidate);\n const augmentedCandidate = Object.assign(nativeCandidate,\n parsedCandidate);\n\n // Add a serializer that does not serialize the extra attributes.\n augmentedCandidate.toJSON = function toJSON() {\n return {\n candidate: augmentedCandidate.candidate,\n sdpMid: augmentedCandidate.sdpMid,\n sdpMLineIndex: augmentedCandidate.sdpMLineIndex,\n usernameFragment: augmentedCandidate.usernameFragment,\n };\n };\n return augmentedCandidate;\n }\n return new NativeRTCIceCandidate(args);\n };\n window.RTCIceCandidate.prototype = NativeRTCIceCandidate.prototype;\n\n // Hook up the augmented candidate in onicecandidate and\n // addEventListener('icecandidate', ...)\n utils.wrapPeerConnectionEvent(window, 'icecandidate', e => {\n if (e.candidate) {\n Object.defineProperty(e, 'candidate', {\n value: new window.RTCIceCandidate(e.candidate),\n writable: 'false'\n });\n }\n return e;\n });\n}\n\nexport function shimMaxMessageSize(window, browserDetails) {\n if (!window.RTCPeerConnection) {\n return;\n }\n\n if (!('sctp' in window.RTCPeerConnection.prototype)) {\n Object.defineProperty(window.RTCPeerConnection.prototype, 'sctp', {\n get() {\n return typeof this._sctp === 'undefined' ? null : this._sctp;\n }\n });\n }\n\n const sctpInDescription = function(description) {\n if (!description || !description.sdp) {\n return false;\n }\n const sections = SDPUtils.splitSections(description.sdp);\n sections.shift();\n return sections.some(mediaSection => {\n const mLine = SDPUtils.parseMLine(mediaSection);\n return mLine && mLine.kind === 'application'\n && mLine.protocol.indexOf('SCTP') !== -1;\n });\n };\n\n const getRemoteFirefoxVersion = function(description) {\n // TODO: Is there a better solution for detecting Firefox?\n const match = description.sdp.match(/mozilla...THIS_IS_SDPARTA-(\\d+)/);\n if (match === null || match.length < 2) {\n return -1;\n }\n const version = parseInt(match[1], 10);\n // Test for NaN (yes, this is ugly)\n return version !== version ? -1 : version;\n };\n\n const getCanSendMaxMessageSize = function(remoteIsFirefox) {\n // Every implementation we know can send at least 64 KiB.\n // Note: Although Chrome is technically able to send up to 256 KiB, the\n // data does not reach the other peer reliably.\n // See: https://bugs.chromium.org/p/webrtc/issues/detail?id=8419\n let canSendMaxMessageSize = 65536;\n if (browserDetails.browser === 'firefox') {\n if (browserDetails.version < 57) {\n if (remoteIsFirefox === -1) {\n // FF < 57 will send in 16 KiB chunks using the deprecated PPID\n // fragmentation.\n canSendMaxMessageSize = 16384;\n } else {\n // However, other FF (and RAWRTC) can reassemble PPID-fragmented\n // messages. Thus, supporting ~2 GiB when sending.\n canSendMaxMessageSize = 2147483637;\n }\n } else if (browserDetails.version < 60) {\n // Currently, all FF >= 57 will reset the remote maximum message size\n // to the default value when a data channel is created at a later\n // stage. :(\n // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831\n canSendMaxMessageSize =\n browserDetails.version === 57 ? 65535 : 65536;\n } else {\n // FF >= 60 supports sending ~2 GiB\n canSendMaxMessageSize = 2147483637;\n }\n }\n return canSendMaxMessageSize;\n };\n\n const getMaxMessageSize = function(description, remoteIsFirefox) {\n // Note: 65536 bytes is the default value from the SDP spec. Also,\n // every implementation we know supports receiving 65536 bytes.\n let maxMessageSize = 65536;\n\n // FF 57 has a slightly incorrect default remote max message size, so\n // we need to adjust it here to avoid a failure when sending.\n // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1425697\n if (browserDetails.browser === 'firefox'\n && browserDetails.version === 57) {\n maxMessageSize = 65535;\n }\n\n const match = SDPUtils.matchPrefix(description.sdp,\n 'a=max-message-size:');\n if (match.length > 0) {\n maxMessageSize = parseInt(match[0].substr(19), 10);\n } else if (browserDetails.browser === 'firefox' &&\n remoteIsFirefox !== -1) {\n // If the maximum message size is not present in the remote SDP and\n // both local and remote are Firefox, the remote peer can receive\n // ~2 GiB.\n maxMessageSize = 2147483637;\n }\n return maxMessageSize;\n };\n\n const origSetRemoteDescription =\n window.RTCPeerConnection.prototype.setRemoteDescription;\n window.RTCPeerConnection.prototype.setRemoteDescription =\n function setRemoteDescription() {\n this._sctp = null;\n // Chrome decided to not expose .sctp in plan-b mode.\n // As usual, adapter.js has to do an 'ugly worakaround'\n // to cover up the mess.\n if (browserDetails.browser === 'chrome' && browserDetails.version >= 76) {\n const {sdpSemantics} = this.getConfiguration();\n if (sdpSemantics === 'plan-b') {\n Object.defineProperty(this, 'sctp', {\n get() {\n return typeof this._sctp === 'undefined' ? null : this._sctp;\n },\n enumerable: true,\n configurable: true,\n });\n }\n }\n\n if (sctpInDescription(arguments[0])) {\n // Check if the remote is FF.\n const isFirefox = getRemoteFirefoxVersion(arguments[0]);\n\n // Get the maximum message size the local peer is capable of sending\n const canSendMMS = getCanSendMaxMessageSize(isFirefox);\n\n // Get the maximum message size of the remote peer.\n const remoteMMS = getMaxMessageSize(arguments[0], isFirefox);\n\n // Determine final maximum message size\n let maxMessageSize;\n if (canSendMMS === 0 && remoteMMS === 0) {\n maxMessageSize = Number.POSITIVE_INFINITY;\n } else if (canSendMMS === 0 || remoteMMS === 0) {\n maxMessageSize = Math.max(canSendMMS, remoteMMS);\n } else {\n maxMessageSize = Math.min(canSendMMS, remoteMMS);\n }\n\n // Create a dummy RTCSctpTransport object and the 'maxMessageSize'\n // attribute.\n const sctp = {};\n Object.defineProperty(sctp, 'maxMessageSize', {\n get() {\n return maxMessageSize;\n }\n });\n this._sctp = sctp;\n }\n\n return origSetRemoteDescription.apply(this, arguments);\n };\n}\n\nexport function shimSendThrowTypeError(window) {\n if (!(window.RTCPeerConnection &&\n 'createDataChannel' in window.RTCPeerConnection.prototype)) {\n return;\n }\n\n // Note: Although Firefox >= 57 has a native implementation, the maximum\n // message size can be reset for all data channels at a later stage.\n // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831\n\n function wrapDcSend(dc, pc) {\n const origDataChannelSend = dc.send;\n dc.send = function send() {\n const data = arguments[0];\n const length = data.length || data.size || data.byteLength;\n if (dc.readyState === 'open' &&\n pc.sctp && length > pc.sctp.maxMessageSize) {\n throw new TypeError('Message too large (can send a maximum of ' +\n pc.sctp.maxMessageSize + ' bytes)');\n }\n return origDataChannelSend.apply(dc, arguments);\n };\n }\n const origCreateDataChannel =\n window.RTCPeerConnection.prototype.createDataChannel;\n window.RTCPeerConnection.prototype.createDataChannel =\n function createDataChannel() {\n const dataChannel = origCreateDataChannel.apply(this, arguments);\n wrapDcSend(dataChannel, this);\n return dataChannel;\n };\n utils.wrapPeerConnectionEvent(window, 'datachannel', e => {\n wrapDcSend(e.channel, e.target);\n return e;\n });\n}\n\n\n/* shims RTCConnectionState by pretending it is the same as iceConnectionState.\n * See https://bugs.chromium.org/p/webrtc/issues/detail?id=6145#c12\n * for why this is a valid hack in Chrome. In Firefox it is slightly incorrect\n * since DTLS failures would be hidden. See\n * https://bugzilla.mozilla.org/show_bug.cgi?id=1265827\n * for the Firefox tracking bug.\n */\nexport function shimConnectionState(window) {\n if (!window.RTCPeerConnection ||\n 'connectionState' in window.RTCPeerConnection.prototype) {\n return;\n }\n const proto = window.RTCPeerConnection.prototype;\n Object.defineProperty(proto, 'connectionState', {\n get() {\n return {\n completed: 'connected',\n checking: 'connecting'\n }[this.iceConnectionState] || this.iceConnectionState;\n },\n enumerable: true,\n configurable: true\n });\n Object.defineProperty(proto, 'onconnectionstatechange', {\n get() {\n return this._onconnectionstatechange || null;\n },\n set(cb) {\n if (this._onconnectionstatechange) {\n this.removeEventListener('connectionstatechange',\n this._onconnectionstatechange);\n delete this._onconnectionstatechange;\n }\n if (cb) {\n this.addEventListener('connectionstatechange',\n this._onconnectionstatechange = cb);\n }\n },\n enumerable: true,\n configurable: true\n });\n\n ['setLocalDescription', 'setRemoteDescription'].forEach((method) => {\n const origMethod = proto[method];\n proto[method] = function() {\n if (!this._connectionstatechangepoly) {\n this._connectionstatechangepoly = e => {\n const pc = e.target;\n if (pc._lastConnectionState !== pc.connectionState) {\n pc._lastConnectionState = pc.connectionState;\n const newEvent = new Event('connectionstatechange', e);\n pc.dispatchEvent(newEvent);\n }\n return e;\n };\n this.addEventListener('iceconnectionstatechange',\n this._connectionstatechangepoly);\n }\n return origMethod.apply(this, arguments);\n };\n });\n}\n\nexport function removeExtmapAllowMixed(window, browserDetails) {\n /* remove a=extmap-allow-mixed for webrtc.org < M71 */\n if (!window.RTCPeerConnection) {\n return;\n }\n if (browserDetails.browser === 'chrome' && browserDetails.version >= 71) {\n return;\n }\n if (browserDetails.browser === 'safari' && browserDetails.version >= 605) {\n return;\n }\n const nativeSRD = window.RTCPeerConnection.prototype.setRemoteDescription;\n window.RTCPeerConnection.prototype.setRemoteDescription =\n function setRemoteDescription(desc) {\n if (desc && desc.sdp && desc.sdp.indexOf('\\na=extmap-allow-mixed') !== -1) {\n const sdp = desc.sdp.split('\\n').filter((line) => {\n return line.trim() !== 'a=extmap-allow-mixed';\n }).join('\\n');\n // Safari enforces read-only-ness of RTCSessionDescription fields.\n if (window.RTCSessionDescription &&\n desc instanceof window.RTCSessionDescription) {\n arguments[0] = new window.RTCSessionDescription({\n type: desc.type,\n sdp,\n });\n } else {\n desc.sdp = sdp;\n }\n }\n return nativeSRD.apply(this, arguments);\n };\n}\n\nexport function shimAddIceCandidateNullOrEmpty(window, browserDetails) {\n // Support for addIceCandidate(null or undefined)\n // as well as addIceCandidate({candidate: \"\", ...})\n // https://bugs.chromium.org/p/chromium/issues/detail?id=978582\n // Note: must be called before other polyfills which change the signature.\n if (!(window.RTCPeerConnection && window.RTCPeerConnection.prototype)) {\n return;\n }\n const nativeAddIceCandidate =\n window.RTCPeerConnection.prototype.addIceCandidate;\n if (!nativeAddIceCandidate || nativeAddIceCandidate.length === 0) {\n return;\n }\n window.RTCPeerConnection.prototype.addIceCandidate =\n function addIceCandidate() {\n if (!arguments[0]) {\n if (arguments[1]) {\n arguments[1].apply(null);\n }\n return Promise.resolve();\n }\n // Firefox 68+ emits and processes {candidate: \"\", ...}, ignore\n // in older versions.\n // Native support for ignoring exists for Chrome M77+.\n // Safari ignores as well, exact version unknown but works in the same\n // version that also ignores addIceCandidate(null).\n if (((browserDetails.browser === 'chrome' && browserDetails.version < 78)\n || (browserDetails.browser === 'firefox'\n && browserDetails.version < 68)\n || (browserDetails.browser === 'safari'))\n && arguments[0] && arguments[0].candidate === '') {\n return Promise.resolve();\n }\n return nativeAddIceCandidate.apply(this, arguments);\n };\n}\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\nimport * as utils from './utils';\n\n // Browser shims.\nimport * as chromeShim from './chrome/chrome_shim';\nimport * as edgeShim from './edge/edge_shim';\nimport * as firefoxShim from './firefox/firefox_shim';\nimport * as safariShim from './safari/safari_shim';\nimport * as commonShim from './common_shim';\n\n// Shimming starts here.\nexport function adapterFactory({window} = {}, options = {\n shimChrome: true,\n shimFirefox: true,\n shimEdge: true,\n shimSafari: true,\n}) {\n // Utils.\n const logging = utils.log;\n const browserDetails = utils.detectBrowser(window);\n\n const adapter = {\n browserDetails,\n commonShim,\n extractVersion: utils.extractVersion,\n disableLog: utils.disableLog,\n disableWarnings: utils.disableWarnings\n };\n\n // Shim browser if found.\n switch (browserDetails.browser) {\n case 'chrome':\n if (!chromeShim || !chromeShim.shimPeerConnection ||\n !options.shimChrome) {\n logging('Chrome shim is not included in this adapter release.');\n return adapter;\n }\n if (browserDetails.version === null) {\n logging('Chrome shim can not determine version, not shimming.');\n return adapter;\n }\n logging('adapter.js shimming chrome.');\n // Export to the adapter global object visible in the browser.\n adapter.browserShim = chromeShim;\n\n // Must be called before shimPeerConnection.\n commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);\n\n chromeShim.shimGetUserMedia(window, browserDetails);\n chromeShim.shimMediaStream(window, browserDetails);\n chromeShim.shimPeerConnection(window, browserDetails);\n chromeShim.shimOnTrack(window, browserDetails);\n chromeShim.shimAddTrackRemoveTrack(window, browserDetails);\n chromeShim.shimGetSendersWithDtmf(window, browserDetails);\n chromeShim.shimGetStats(window, browserDetails);\n chromeShim.shimSenderReceiverGetStats(window, browserDetails);\n chromeShim.fixNegotiationNeeded(window, browserDetails);\n\n commonShim.shimRTCIceCandidate(window, browserDetails);\n commonShim.shimConnectionState(window, browserDetails);\n commonShim.shimMaxMessageSize(window, browserDetails);\n commonShim.shimSendThrowTypeError(window, browserDetails);\n commonShim.removeExtmapAllowMixed(window, browserDetails);\n break;\n case 'firefox':\n if (!firefoxShim || !firefoxShim.shimPeerConnection ||\n !options.shimFirefox) {\n logging('Firefox shim is not included in this adapter release.');\n return adapter;\n }\n logging('adapter.js shimming firefox.');\n // Export to the adapter global object visible in the browser.\n adapter.browserShim = firefoxShim;\n\n // Must be called before shimPeerConnection.\n commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);\n\n firefoxShim.shimGetUserMedia(window, browserDetails);\n firefoxShim.shimPeerConnection(window, browserDetails);\n firefoxShim.shimOnTrack(window, browserDetails);\n firefoxShim.shimRemoveStream(window, browserDetails);\n firefoxShim.shimSenderGetStats(window, browserDetails);\n firefoxShim.shimReceiverGetStats(window, browserDetails);\n firefoxShim.shimRTCDataChannel(window, browserDetails);\n firefoxShim.shimAddTransceiver(window, browserDetails);\n firefoxShim.shimGetParameters(window, browserDetails);\n firefoxShim.shimCreateOffer(window, browserDetails);\n firefoxShim.shimCreateAnswer(window, browserDetails);\n\n commonShim.shimRTCIceCandidate(window, browserDetails);\n commonShim.shimConnectionState(window, browserDetails);\n commonShim.shimMaxMessageSize(window, browserDetails);\n commonShim.shimSendThrowTypeError(window, browserDetails);\n break;\n case 'edge':\n if (!edgeShim || !edgeShim.shimPeerConnection || !options.shimEdge) {\n logging('MS edge shim is not included in this adapter release.');\n return adapter;\n }\n logging('adapter.js shimming edge.');\n // Export to the adapter global object visible in the browser.\n adapter.browserShim = edgeShim;\n\n edgeShim.shimGetUserMedia(window, browserDetails);\n edgeShim.shimGetDisplayMedia(window, browserDetails);\n edgeShim.shimPeerConnection(window, browserDetails);\n edgeShim.shimReplaceTrack(window, browserDetails);\n\n // the edge shim implements the full RTCIceCandidate object.\n\n commonShim.shimMaxMessageSize(window, browserDetails);\n commonShim.shimSendThrowTypeError(window, browserDetails);\n break;\n case 'safari':\n if (!safariShim || !options.shimSafari) {\n logging('Safari shim is not included in this adapter release.');\n return adapter;\n }\n logging('adapter.js shimming safari.');\n // Export to the adapter global object visible in the browser.\n adapter.browserShim = safariShim;\n\n // Must be called before shimCallbackAPI.\n commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);\n\n safariShim.shimRTCIceServerUrls(window, browserDetails);\n safariShim.shimCreateOfferLegacy(window, browserDetails);\n safariShim.shimCallbacksAPI(window, browserDetails);\n safariShim.shimLocalStreamsAPI(window, browserDetails);\n safariShim.shimRemoteStreamsAPI(window, browserDetails);\n safariShim.shimTrackEventTransceiver(window, browserDetails);\n safariShim.shimGetUserMedia(window, browserDetails);\n safariShim.shimAudioContext(window, browserDetails);\n\n commonShim.shimRTCIceCandidate(window, browserDetails);\n commonShim.shimMaxMessageSize(window, browserDetails);\n commonShim.shimSendThrowTypeError(window, browserDetails);\n commonShim.removeExtmapAllowMixed(window, browserDetails);\n break;\n default:\n logging('Unsupported browser!');\n break;\n }\n\n return adapter;\n}\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n\n'use strict';\n\nimport {adapterFactory} from './adapter_factory.js';\n\nconst adapter =\n adapterFactory({window: typeof window === 'undefined' ? undefined : window});\nexport default adapter;\n","import webRTCAdapter from \"webrtc-adapter\";\n\nexport { webRTCAdapter };\n","import { webRTCAdapter } from './adapter';\n\nexport const Supports = new class {\n readonly isIOS = ['iPad', 'iPhone', 'iPod'].includes(navigator.platform);\n readonly supportedBrowsers = ['firefox', 'chrome', 'safari'];\n\n readonly minFirefoxVersion = 59;\n readonly minChromeVersion = 72;\n readonly minSafariVersion = 605;\n\n isWebRTCSupported(): boolean {\n return typeof RTCPeerConnection !== 'undefined';\n }\n\n isBrowserSupported(): boolean {\n const browser = this.getBrowser();\n const version = this.getVersion();\n\n const validBrowser = this.supportedBrowsers.includes(browser);\n\n if (!validBrowser) return false;\n\n if (browser === 'chrome') return version >= this.minChromeVersion;\n if (browser === 'firefox') return version >= this.minFirefoxVersion;\n if (browser === 'safari') return !this.isIOS && version >= this.minSafariVersion;\n\n return false;\n }\n\n getBrowser(): string {\n return webRTCAdapter.browserDetails.browser;\n }\n\n getVersion(): number {\n return webRTCAdapter.browserDetails.version || 0;\n }\n\n isUnifiedPlanSupported(): boolean {\n const browser = this.getBrowser();\n const version = webRTCAdapter.browserDetails.version || 0;\n\n if (browser === 'chrome' && version < 72) return false;\n if (browser === 'firefox' && version >= 59) return true;\n if (!window.RTCRtpTransceiver || !('currentDirection' in RTCRtpTransceiver.prototype)) return false;\n\n let tempPc: RTCPeerConnection;\n let supported = false;\n\n try {\n tempPc = new RTCPeerConnection();\n tempPc.addTransceiver('audio');\n supported = true;\n } catch (e) { }\n finally {\n if (tempPc) {\n tempPc.close();\n }\n }\n\n return supported;\n }\n\n toString(): string {\n return `Supports: \n browser:${this.getBrowser()} \n version:${this.getVersion()} \n isIOS:${this.isIOS} \n isWebRTCSupported:${this.isWebRTCSupported()} \n isBrowserSupported:${this.isBrowserSupported()} \n isUnifiedPlanSupported:${this.isUnifiedPlanSupported()}`;\n }\n}","import * as BinaryPack from \"peerjs-js-binarypack\";\nimport { Supports } from './supports';\nimport { UtilSupportsObj } from '..';\n\nconst DEFAULT_CONFIG = {\n iceServers: [\n { urls: \"stun:stun.l.google.com:19302\" },\n { urls: \"turn:0.peerjs.com:3478\", username: \"peerjs\", credential: \"peerjsp\" }\n ],\n sdpSemantics: \"unified-plan\"\n};\n\nexport const util = new class {\n noop(): void { }\n\n readonly CLOUD_HOST = \"0.peerjs.com\";\n readonly CLOUD_PORT = 443;\n\n // Browsers that need chunking:\n readonly chunkedBrowsers = { Chrome: 1, chrome: 1 };\n readonly chunkedMTU = 16300; // The original 60000 bytes setting does not work when sending data from Firefox to Chrome, which is \"cut off\" after 16384 bytes and delivered individually.\n\n // Returns browser-agnostic default config\n readonly defaultConfig = DEFAULT_CONFIG;\n\n readonly browser = Supports.getBrowser();\n readonly browserVersion = Supports.getVersion();\n\n // Lists which features are supported\n readonly supports = (function () {\n const supported: UtilSupportsObj = {\n browser: Supports.isBrowserSupported(),\n webRTC: Supports.isWebRTCSupported(),\n audioVideo: false,\n data: false,\n binaryBlob: false,\n reliable: false,\n };\n\n if (!supported.webRTC) return supported;\n\n let pc: RTCPeerConnection;\n\n try {\n pc = new RTCPeerConnection(DEFAULT_CONFIG);\n\n supported.audioVideo = true;\n\n let dc: RTCDataChannel;\n\n try {\n dc = pc.createDataChannel(\"_PEERJSTEST\", { ordered: true });\n supported.data = true;\n supported.reliable = !!dc.ordered;\n\n // Binary test\n try {\n dc.binaryType = \"blob\";\n supported.binaryBlob = !Supports.isIOS;\n } catch (e) {\n }\n } catch (e) {\n } finally {\n if (dc) {\n dc.close();\n }\n }\n } catch (e) {\n } finally {\n if (pc) {\n pc.close();\n }\n }\n\n return supported;\n })();\n\n // Ensure alphanumeric ids\n validateId(id: string): boolean {\n // Allow empty ids\n return !id || /^[A-Za-z0-9]+(?:[ _-][A-Za-z0-9]+)*$/.test(id);\n }\n\n pack = BinaryPack.pack;\n unpack = BinaryPack.unpack;\n\n // Binary stuff\n\n private _dataCount: number = 1;\n\n chunk(blob: Blob): { __peerData: number, n: number, total: number, data: Blob }[] {\n const chunks = [];\n const size = blob.size;\n const total = Math.ceil(size / util.chunkedMTU);\n\n let index = 0;\n let start = 0;\n\n while (start < size) {\n const end = Math.min(size, start + util.chunkedMTU);\n const b = blob.slice(start, end);\n\n const chunk = {\n __peerData: this._dataCount,\n n: index,\n data: b,\n total,\n };\n\n chunks.push(chunk);\n\n start = end;\n index++;\n }\n\n this._dataCount++;\n\n return chunks;\n }\n\n blobToArrayBuffer(blob: Blob, cb: (arg: ArrayBuffer | null) => void): FileReader {\n const fr = new FileReader();\n\n fr.onload = function (evt) {\n if (evt.target) {\n cb(evt.target.result as ArrayBuffer);\n }\n };\n\n fr.readAsArrayBuffer(blob);\n\n return fr;\n }\n\n binaryStringToArrayBuffer(binary: string): ArrayBuffer | SharedArrayBuffer {\n const byteArray = new Uint8Array(binary.length);\n\n for (let i = 0; i < binary.length; i++) {\n byteArray[i] = binary.charCodeAt(i) & 0xff;\n }\n\n return byteArray.buffer;\n }\n\n randomToken(): string {\n return Math.random()\n .toString(36)\n .substr(2);\n }\n\n isSecure(): boolean {\n return location.protocol === \"https:\";\n }\n}\n","'use strict';\n\nvar has = Object.prototype.hasOwnProperty\n , prefix = '~';\n\n/**\n * Constructor to create a storage for our `EE` objects.\n * An `Events` instance is a plain object whose properties are event names.\n *\n * @constructor\n * @private\n */\nfunction Events() {}\n\n//\n// We try to not inherit from `Object.prototype`. In some engines creating an\n// instance in this way is faster than calling `Object.create(null)` directly.\n// If `Object.create(null)` is not supported we prefix the event names with a\n// character to make sure that the built-in object properties are not\n// overridden or used as an attack vector.\n//\nif (Object.create) {\n Events.prototype = Object.create(null);\n\n //\n // This hack is needed because the `__proto__` property is still inherited in\n // some old browsers like Android 4, iPhone 5.1, Opera 11 and Safari 5.\n //\n if (!new Events().__proto__) prefix = false;\n}\n\n/**\n * Representation of a single event listener.\n *\n * @param {Function} fn The listener function.\n * @param {*} context The context to invoke the listener with.\n * @param {Boolean} [once=false] Specify if the listener is a one-time listener.\n * @constructor\n * @private\n */\nfunction EE(fn, context, once) {\n this.fn = fn;\n this.context = context;\n this.once = once || false;\n}\n\n/**\n * Add a listener for a given event.\n *\n * @param {EventEmitter} emitter Reference to the `EventEmitter` instance.\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn The listener function.\n * @param {*} context The context to invoke the listener with.\n * @param {Boolean} once Specify if the listener is a one-time listener.\n * @returns {EventEmitter}\n * @private\n */\nfunction addListener(emitter, event, fn, context, once) {\n if (typeof fn !== 'function') {\n throw new TypeError('The listener must be a function');\n }\n\n var listener = new EE(fn, context || emitter, once)\n , evt = prefix ? prefix + event : event;\n\n if (!emitter._events[evt]) emitter._events[evt] = listener, emitter._eventsCount++;\n else if (!emitter._events[evt].fn) emitter._events[evt].push(listener);\n else emitter._events[evt] = [emitter._events[evt], listener];\n\n return emitter;\n}\n\n/**\n * Clear event by name.\n *\n * @param {EventEmitter} emitter Reference to the `EventEmitter` instance.\n * @param {(String|Symbol)} evt The Event name.\n * @private\n */\nfunction clearEvent(emitter, evt) {\n if (--emitter._eventsCount === 0) emitter._events = new Events();\n else delete emitter._events[evt];\n}\n\n/**\n * Minimal `EventEmitter` interface that is molded against the Node.js\n * `EventEmitter` interface.\n *\n * @constructor\n * @public\n */\nfunction EventEmitter() {\n this._events = new Events();\n this._eventsCount = 0;\n}\n\n/**\n * Return an array listing the events for which the emitter has registered\n * listeners.\n *\n * @returns {Array}\n * @public\n */\nEventEmitter.prototype.eventNames = function eventNames() {\n var names = []\n , events\n , name;\n\n if (this._eventsCount === 0) return names;\n\n for (name in (events = this._events)) {\n if (has.call(events, name)) names.push(prefix ? name.slice(1) : name);\n }\n\n if (Object.getOwnPropertySymbols) {\n return names.concat(Object.getOwnPropertySymbols(events));\n }\n\n return names;\n};\n\n/**\n * Return the listeners registered for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @returns {Array} The registered listeners.\n * @public\n */\nEventEmitter.prototype.listeners = function listeners(event) {\n var evt = prefix ? prefix + event : event\n , handlers = this._events[evt];\n\n if (!handlers) return [];\n if (handlers.fn) return [handlers.fn];\n\n for (var i = 0, l = handlers.length, ee = new Array(l); i < l; i++) {\n ee[i] = handlers[i].fn;\n }\n\n return ee;\n};\n\n/**\n * Return the number of listeners listening to a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @returns {Number} The number of listeners.\n * @public\n */\nEventEmitter.prototype.listenerCount = function listenerCount(event) {\n var evt = prefix ? prefix + event : event\n , listeners = this._events[evt];\n\n if (!listeners) return 0;\n if (listeners.fn) return 1;\n return listeners.length;\n};\n\n/**\n * Calls each of the listeners registered for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @returns {Boolean} `true` if the event had listeners, else `false`.\n * @public\n */\nEventEmitter.prototype.emit = function emit(event, a1, a2, a3, a4, a5) {\n var evt = prefix ? prefix + event : event;\n\n if (!this._events[evt]) return false;\n\n var listeners = this._events[evt]\n , len = arguments.length\n , args\n , i;\n\n if (listeners.fn) {\n if (listeners.once) this.removeListener(event, listeners.fn, undefined, true);\n\n switch (len) {\n case 1: return listeners.fn.call(listeners.context), true;\n case 2: return listeners.fn.call(listeners.context, a1), true;\n case 3: return listeners.fn.call(listeners.context, a1, a2), true;\n case 4: return listeners.fn.call(listeners.context, a1, a2, a3), true;\n case 5: return listeners.fn.call(listeners.context, a1, a2, a3, a4), true;\n case 6: return listeners.fn.call(listeners.context, a1, a2, a3, a4, a5), true;\n }\n\n for (i = 1, args = new Array(len -1); i < len; i++) {\n args[i - 1] = arguments[i];\n }\n\n listeners.fn.apply(listeners.context, args);\n } else {\n var length = listeners.length\n , j;\n\n for (i = 0; i < length; i++) {\n if (listeners[i].once) this.removeListener(event, listeners[i].fn, undefined, true);\n\n switch (len) {\n case 1: listeners[i].fn.call(listeners[i].context); break;\n case 2: listeners[i].fn.call(listeners[i].context, a1); break;\n case 3: listeners[i].fn.call(listeners[i].context, a1, a2); break;\n case 4: listeners[i].fn.call(listeners[i].context, a1, a2, a3); break;\n default:\n if (!args) for (j = 1, args = new Array(len -1); j < len; j++) {\n args[j - 1] = arguments[j];\n }\n\n listeners[i].fn.apply(listeners[i].context, args);\n }\n }\n }\n\n return true;\n};\n\n/**\n * Add a listener for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn The listener function.\n * @param {*} [context=this] The context to invoke the listener with.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.on = function on(event, fn, context) {\n return addListener(this, event, fn, context, false);\n};\n\n/**\n * Add a one-time listener for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn The listener function.\n * @param {*} [context=this] The context to invoke the listener with.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.once = function once(event, fn, context) {\n return addListener(this, event, fn, context, true);\n};\n\n/**\n * Remove the listeners of a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn Only remove the listeners that match this function.\n * @param {*} context Only remove the listeners that have this context.\n * @param {Boolean} once Only remove one-time listeners.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.removeListener = function removeListener(event, fn, context, once) {\n var evt = prefix ? prefix + event : event;\n\n if (!this._events[evt]) return this;\n if (!fn) {\n clearEvent(this, evt);\n return this;\n }\n\n var listeners = this._events[evt];\n\n if (listeners.fn) {\n if (\n listeners.fn === fn &&\n (!once || listeners.once) &&\n (!context || listeners.context === context)\n ) {\n clearEvent(this, evt);\n }\n } else {\n for (var i = 0, events = [], length = listeners.length; i < length; i++) {\n if (\n listeners[i].fn !== fn ||\n (once && !listeners[i].once) ||\n (context && listeners[i].context !== context)\n ) {\n events.push(listeners[i]);\n }\n }\n\n //\n // Reset the array, or remove it completely if we have no more listeners.\n //\n if (events.length) this._events[evt] = events.length === 1 ? events[0] : events;\n else clearEvent(this, evt);\n }\n\n return this;\n};\n\n/**\n * Remove all listeners, or those of the specified event.\n *\n * @param {(String|Symbol)} [event] The event name.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.removeAllListeners = function removeAllListeners(event) {\n var evt;\n\n if (event) {\n evt = prefix ? prefix + event : event;\n if (this._events[evt]) clearEvent(this, evt);\n } else {\n this._events = new Events();\n this._eventsCount = 0;\n }\n\n return this;\n};\n\n//\n// Alias methods names because people roll like that.\n//\nEventEmitter.prototype.off = EventEmitter.prototype.removeListener;\nEventEmitter.prototype.addListener = EventEmitter.prototype.on;\n\n//\n// Expose the prefix.\n//\nEventEmitter.prefixed = prefix;\n\n//\n// Allow `EventEmitter` to be imported as module namespace.\n//\nEventEmitter.EventEmitter = EventEmitter;\n\n//\n// Expose the module.\n//\nif ('undefined' !== typeof module) {\n module.exports = EventEmitter;\n}\n","const LOG_PREFIX = 'PeerJS: ';\n\n/*\nPrints log messages depending on the debug level passed in. Defaults to 0.\n0 Prints no logs.\n1 Prints only errors.\n2 Prints errors and warnings.\n3 Prints all logs.\n*/\nexport enum LogLevel {\n Disabled,\n Errors,\n Warnings,\n All\n}\n\nclass Logger {\n private _logLevel = LogLevel.Disabled;\n\n get logLevel(): LogLevel { return this._logLevel; }\n\n set logLevel(logLevel: LogLevel) { this._logLevel = logLevel; }\n\n log(...args: any[]) {\n if (this._logLevel >= LogLevel.All) {\n this._print(LogLevel.All, ...args);\n }\n }\n\n warn(...args: any[]) {\n if (this._logLevel >= LogLevel.Warnings) {\n this._print(LogLevel.Warnings, ...args);\n }\n }\n\n error(...args: any[]) {\n if (this._logLevel >= LogLevel.Errors) {\n this._print(LogLevel.Errors, ...args);\n }\n }\n\n setLogFunction(fn: (logLevel: LogLevel, ..._: any[]) => void): void {\n this._print = fn;\n }\n\n private _print(logLevel: LogLevel, ...rest: any[]): void {\n const copy = [LOG_PREFIX, ...rest];\n\n for (let i in copy) {\n if (copy[i] instanceof Error) {\n copy[i] = \"(\" + copy[i].name + \") \" + copy[i].message;\n\n }\n }\n\n if (logLevel >= LogLevel.All) {\n console.log(...copy);\n } else if (logLevel >= LogLevel.Warnings) {\n console.warn(\"WARNING\", ...copy);\n } else if (logLevel >= LogLevel.Errors) {\n console.error(\"ERROR\", ...copy);\n }\n }\n}\n\nexport default new Logger();","export enum ConnectionEventType {\n Open = \"open\",\n Stream = \"stream\",\n Data = \"data\",\n Close = \"close\",\n Error = \"error\",\n IceStateChanged = \"iceStateChanged\"\n}\n\nexport enum ConnectionType {\n Data = \"data\",\n Media = \"media\"\n}\n\nexport enum PeerEventType {\n Open = \"open\",\n Close = \"close\",\n Connection = \"connection\",\n Call = \"call\",\n Disconnected = \"disconnected\",\n Error = \"error\"\n}\n\nexport enum PeerErrorType {\n BrowserIncompatible = \"browser-incompatible\",\n Disconnected = \"disconnected\",\n InvalidID = \"invalid-id\",\n InvalidKey = \"invalid-key\",\n Network = \"network\",\n PeerUnavailable = \"peer-unavailable\",\n SslUnavailable = \"ssl-unavailable\",\n ServerError = \"server-error\",\n SocketError = \"socket-error\",\n SocketClosed = \"socket-closed\",\n UnavailableID = \"unavailable-id\",\n WebRTC = \"webrtc\"\n}\n\nexport enum SerializationType {\n Binary = \"binary\",\n BinaryUTF8 = \"binary-utf8\",\n JSON = \"json\"\n}\n\nexport enum SocketEventType {\n Message = \"message\",\n Disconnected = \"disconnected\",\n Error = \"error\",\n Close = \"close\"\n}\n\nexport enum ServerMessageType {\n Heartbeat = \"HEARTBEAT\",\n Candidate = \"CANDIDATE\",\n Offer = \"OFFER\",\n Answer = \"ANSWER\",\n Open = \"OPEN\", // The connection to the server is open.\n Error = \"ERROR\", // Server error.\n IdTaken = \"ID-TAKEN\", // The selected ID is taken.\n InvalidKey = \"INVALID-KEY\", // The given API key cannot be found.\n Leave = \"LEAVE\", // Another peer has closed its connection to this peer.\n Expire = \"EXPIRE\" // The offer sent to a peer has expired without response.\n\n}","import { EventEmitter } from \"eventemitter3\";\nimport logger from \"./logger\";\nimport { SocketEventType, ServerMessageType } from \"./enums\";\n\n/**\n * An abstraction on top of WebSockets to provide fastest\n * possible connection for peers.\n */\nexport class Socket extends EventEmitter {\n private _disconnected: boolean = true;\n private _id?: string;\n private _messagesQueue: Array<object> = [];\n private _socket?: WebSocket;\n private _wsPingTimer?: any;\n private readonly _baseUrl: string;\n\n constructor(\n secure: any,\n host: string,\n port: number,\n path: string,\n key: string,\n private readonly pingInterval: number = 5000,\n ) {\n super();\n\n const wsProtocol = secure ? \"wss://\" : \"ws://\";\n\n this._baseUrl = wsProtocol + host + \":\" + port + path + \"peerjs?key=\" + key;\n }\n\n start(id: string, token: string): void {\n this._id = id;\n\n const wsUrl = `${this._baseUrl}&id=${id}&token=${token}`;\n\n if (!!this._socket || !this._disconnected) {\n return;\n }\n\n this._socket = new WebSocket(wsUrl);\n this._disconnected = false;\n\n this._socket.onmessage = (event) => {\n let data;\n\n try {\n data = JSON.parse(event.data);\n logger.log(\"Server message received:\", data);\n } catch (e) {\n logger.log(\"Invalid server message\", event.data);\n return;\n }\n\n this.emit(SocketEventType.Message, data);\n };\n\n this._socket.onclose = (event) => {\n if (this._disconnected) {\n return;\n }\n\n logger.log(\"Socket closed.\", event);\n\n this._cleanup();\n this._disconnected = true;\n\n this.emit(SocketEventType.Disconnected);\n };\n\n // Take care of the queue of connections if necessary and make sure Peer knows\n // socket is open.\n this._socket.onopen = () => {\n if (this._disconnected) {\n return;\n }\n\n this._sendQueuedMessages();\n\n logger.log(\"Socket open\");\n\n this._scheduleHeartbeat();\n };\n }\n\n private _scheduleHeartbeat(): void {\n this._wsPingTimer = setTimeout(() => {\n this._sendHeartbeat();\n }, this.pingInterval);\n }\n\n private _sendHeartbeat(): void {\n if (!this._wsOpen()) {\n logger.log(`Cannot send heartbeat, because socket closed`);\n return;\n }\n\n const message = JSON.stringify({ type: ServerMessageType.Heartbeat });\n\n this._socket!.send(message);\n\n this._scheduleHeartbeat();\n }\n\n /** Is the websocket currently open? */\n private _wsOpen(): boolean {\n return !!this._socket && this._socket.readyState === 1;\n }\n\n /** Send queued messages. */\n private _sendQueuedMessages(): void {\n //Create copy of queue and clear it,\n //because send method push the message back to queue if smth will go wrong\n const copiedQueue = [...this._messagesQueue];\n this._messagesQueue = [];\n\n for (const message of copiedQueue) {\n this.send(message);\n }\n }\n\n /** Exposed send for DC & Peer. */\n send(data: any): void {\n if (this._disconnected) {\n return;\n }\n\n // If we didn't get an ID yet, we can't yet send anything so we should queue\n // up these messages.\n if (!this._id) {\n this._messagesQueue.push(data);\n return;\n }\n\n if (!data.type) {\n this.emit(SocketEventType.Error, \"Invalid message\");\n return;\n }\n\n if (!this._wsOpen()) {\n return;\n }\n\n const message = JSON.stringify(data);\n\n this._socket!.send(message);\n }\n\n close(): void {\n if (this._disconnected) {\n return;\n }\n\n this._cleanup();\n\n this._disconnected = true;\n }\n\n private _cleanup(): void {\n if (this._socket) {\n this._socket.onopen = this._socket.onmessage = this._socket.onclose = null;\n this._socket.close();\n this._socket = undefined;\n }\n\n clearTimeout(this._wsPingTimer!);\n }\n}\n","import { util } from \"./util\";\nimport logger from \"./logger\";\nimport { MediaConnection } from \"./mediaconnection\";\nimport { DataConnection } from \"./dataconnection\";\nimport { ConnectionType, PeerErrorType, ConnectionEventType, ServerMessageType } from \"./enums\";\nimport { BaseConnection } from \"./baseconnection\";\n\n/**\n * Manages all negotiations between Peers.\n */\nexport class Negotiator {\n constructor(readonly connection: BaseConnection) { }\n\n /** Returns a PeerConnection object set up correctly (for data, media). */\n startConnection(options: any) {\n const peerConnection = this._startPeerConnection();\n\n // Set the connection's PC.\n this.connection.peerConnection = peerConnection;\n\n if (this.connection.type === ConnectionType.Media && options._stream) {\n this._addTracksToConnection(options._stream, peerConnection);\n }\n\n // What do we need to do now?\n if (options.originator) {\n if (this.connection.type === ConnectionType.Data) {\n const dataConnection = <DataConnection>this.connection;\n\n const config: RTCDataChannelInit = { ordered: !!options.reliable };\n\n const dataChannel = peerConnection.createDataChannel(\n dataConnection.label,\n config\n );\n dataConnection.initialize(dataChannel);\n }\n\n this._makeOffer();\n } else {\n this.handleSDP(\"OFFER\", options.sdp);\n }\n }\n\n /** Start a PC. */\n private _startPeerConnection(): RTCPeerConnection {\n logger.log(\"Creating RTCPeerConnection.\");\n\n const peerConnection = new RTCPeerConnection(this.connection.provider.options.config);\n\n this._setupListeners(peerConnection);\n\n return peerConnection;\n }\n\n /** Set up various WebRTC listeners. */\n private _setupListeners(\n peerConnection: RTCPeerConnection\n ) {\n const peerId = this.connection.peer;\n const connectionId = this.connection.connectionId;\n const connectionType = this.connection.type;\n const provider = this.connection.provider;\n\n // ICE CANDIDATES.\n logger.log(\"Listening for ICE candidates.\");\n\n peerConnection.onicecandidate = (evt) => {\n if (!evt.candidate || !evt.candidate.candidate) return;\n\n logger.log(`Received ICE candidates for ${peerId}:`, evt.candidate);\n\n provider.socket.send({\n type: ServerMessageType.Candidate,\n payload: {\n candidate: evt.candidate,\n type: connectionType,\n connectionId: connectionId\n },\n dst: peerId\n });\n };\n\n peerConnection.oniceconnectionstatechange = () => {\n switch (peerConnection.iceConnectionState) {\n case \"failed\":\n logger.log(\n \"iceConnectionState is failed, closing connections to \" +\n peerId\n );\n this.connection.emit(\n ConnectionEventType.Error,\n new Error(\"Negotiation of connection to \" + peerId + \" failed.\")\n );\n this.connection.close();\n break;\n case \"closed\":\n logger.log(\n \"iceConnectionState is closed, closing connections to \" +\n peerId\n );\n this.connection.emit(\n ConnectionEventType.Error,\n new Error(\"Connection to \" + peerId + \" closed.\")\n );\n this.connection.close();\n break;\n case \"disconnected\":\n logger.log(\n \"iceConnectionState changed to disconnected on the connection with \" +\n peerId\n );\n break;\n case \"completed\":\n peerConnection.onicecandidate = util.noop;\n break;\n }\n\n this.connection.emit(ConnectionEventType.IceStateChanged, peerConnection.iceConnectionState);\n };\n\n // DATACONNECTION.\n logger.log(\"Listening for data channel\");\n // Fired between offer and answer, so options should already be saved\n // in the options hash.\n peerConnection.ondatachannel = (evt) => {\n logger.log(\"Received data channel\");\n\n const dataChannel = evt.channel;\n const connection = <DataConnection>(\n provider.getConnection(peerId, connectionId)\n );\n\n connection.initialize(dataChannel);\n };\n\n // MEDIACONNECTION.\n logger.log(\"Listening for remote stream\");\n\n peerConnection.ontrack = (evt) => {\n logger.log(\"Received remote stream\");\n\n const stream = evt.streams[0];\n const connection = provider.getConnection(peerId, connectionId);\n\n if (connection.type === ConnectionType.Media) {\n const mediaConnection = <MediaConnection>connection;\n\n this._addStreamToMediaConnection(stream, mediaConnection);\n }\n };\n }\n\n cleanup(): void {\n logger.log(\"Cleaning up PeerConnection to \" + this.connection.peer);\n\n const peerConnection = this.connection.peerConnection;\n\n if (!peerConnection) {\n return;\n }\n\n this.connection.peerConnection = null;\n\n //unsubscribe from all PeerConnection's events\n peerConnection.onicecandidate = peerConnection.oniceconnectionstatechange = peerConnection.ondatachannel = peerConnection.ontrack = () => { };\n\n const peerConnectionNotClosed = peerConnection.signalingState !== \"closed\";\n let dataChannelNotClosed = false;\n\n if (this.connection.type === ConnectionType.Data) {\n const dataConnection = <DataConnection>this.connection;\n const dataChannel = dataConnection.dataChannel;\n\n if (dataChannel) {\n dataChannelNotClosed = !!dataChannel.readyState && dataChannel.readyState !== \"closed\";\n }\n }\n\n if (peerConnectionNotClosed || dataChannelNotClosed) {\n peerConnection.close();\n }\n }\n\n private async _makeOffer(): Promise<void> {\n const peerConnection = this.connection.peerConnection;\n const provider = this.connection.provider;\n\n try {\n const offer = await peerConnection.createOffer(\n this.connection.options.constraints\n );\n\n logger.log(\"Created offer.\");\n\n if (this.connection.options.sdpTransform && typeof this.connection.options.sdpTransform === 'function') {\n offer.sdp = this.connection.options.sdpTransform(offer.sdp) || offer.sdp;\n }\n\n try {\n await peerConnection.setLocalDescription(offer);\n\n logger.log(\"Set localDescription:\", offer, `for:${this.connection.peer}`);\n\n let payload: any = {\n sdp: offer,\n type: this.connection.type,\n connectionId: this.connection.connectionId,\n metadata: this.connection.metadata,\n browser: util.browser\n };\n\n if (this.connection.type === ConnectionType.Data) {\n const dataConnection = <DataConnection>this.connection;\n\n payload = {\n ...payload,\n label: dataConnection.label,\n reliable: dataConnection.reliable,\n serialization: dataConnection.serialization\n };\n }\n\n provider.socket.send({\n type: ServerMessageType.Offer,\n payload,\n dst: this.connection.peer\n });\n } catch (err) {\n // TODO: investigate why _makeOffer is being called from the answer\n if (\n err !=\n \"OperationError: Failed to set local offer sdp: Called in wrong state: kHaveRemoteOffer\"\n ) {\n provider.emitError(PeerErrorType.WebRTC, err);\n logger.log(\"Failed to setLocalDescription, \", err);\n }\n }\n } catch (err_1) {\n provider.emitError(PeerErrorType.WebRTC, err_1);\n logger.log(\"Failed to createOffer, \", err_1);\n }\n }\n\n private async _makeAnswer(): Promise<void> {\n const peerConnection = this.connection.peerConnection;\n const provider = this.connection.provider;\n\n try {\n const answer = await peerConnection.createAnswer();\n logger.log(\"Created answer.\");\n\n if (this.connection.options.sdpTransform && typeof this.connection.options.sdpTransform === 'function') {\n answer.sdp = this.connection.options.sdpTransform(answer.sdp) || answer.sdp;\n }\n\n try {\n await peerConnection.setLocalDescription(answer);\n\n logger.log(`Set localDescription:`, answer, `for:${this.connection.peer}`);\n\n provider.socket.send({\n type: ServerMessageType.Answer,\n payload: {\n sdp: answer,\n type: this.connection.type,\n connectionId: this.connection.connectionId,\n browser: util.browser\n },\n dst: this.connection.peer\n });\n } catch (err) {\n provider.emitError(PeerErrorType.WebRTC, err);\n logger.log(\"Failed to setLocalDescription, \", err);\n }\n } catch (err_1) {\n provider.emitError(PeerErrorType.WebRTC, err_1);\n logger.log(\"Failed to create answer, \", err_1);\n }\n }\n\n /** Handle an SDP. */\n async handleSDP(\n type: string,\n sdp: any\n ): Promise<void> {\n sdp = new RTCSessionDescription(sdp);\n const peerConnection = this.connection.peerConnection;\n const provider = this.connection.provider;\n\n logger.log(\"Setting remote description\", sdp);\n\n const self = this;\n\n try {\n await peerConnection.setRemoteDescription(sdp);\n logger.log(`Set remoteDescription:${type} for:${this.connection.peer}`);\n if (type === \"OFFER\") {\n await self._makeAnswer();\n }\n } catch (err) {\n provider.emitError(PeerErrorType.WebRTC, err);\n logger.log(\"Failed to setRemoteDescription, \", err);\n }\n }\n\n /** Handle a candidate. */\n async handleCandidate(ice: any): Promise<void> {\n logger.log(`handleCandidate:`, ice);\n\n const candidate = ice.candidate;\n const sdpMLineIndex = ice.sdpMLineIndex;\n const sdpMid = ice.sdpMid;\n const peerConnection = this.connection.peerConnection;\n const provider = this.connection.provider;\n\n try {\n await peerConnection.addIceCandidate(\n new RTCIceCandidate({\n sdpMid: sdpMid,\n sdpMLineIndex: sdpMLineIndex,\n candidate: candidate\n })\n );\n logger.log(`Added ICE candidate for:${this.connection.peer}`);\n } catch (err) {\n provider.emitError(PeerErrorType.WebRTC, err);\n logger.log(\"Failed to handleCandidate, \", err);\n }\n }\n\n private _addTracksToConnection(\n stream: MediaStream,\n peerConnection: RTCPeerConnection\n ): void {\n logger.log(`add tracks from stream ${stream.id} to peer connection`);\n\n if (!peerConnection.addTrack) {\n return logger.error(\n `Your browser does't support RTCPeerConnection#addTrack. Ignored.`\n );\n }\n\n stream.getTracks().forEach(track => {\n peerConnection.addTrack(track, stream);\n });\n }\n\n private _addStreamToMediaConnection(\n stream: MediaStream,\n mediaConnection: MediaConnection\n ): void {\n logger.log(\n `add stream ${stream.id} to media connection ${\n mediaConnection.connectionId\n }`\n );\n\n mediaConnection.addStream(stream);\n }\n}\n","import { EventEmitter } from \"eventemitter3\";\nimport { Peer } from \"./peer\";\nimport { ServerMessage } from \"./servermessage\";\nimport { ConnectionType } from \"./enums\";\n\nexport abstract class BaseConnection extends EventEmitter {\n protected _open = false;\n\n readonly metadata: any;\n connectionId: string;\n\n peerConnection: RTCPeerConnection;\n\n abstract get type(): ConnectionType;\n\n get open() {\n return this._open;\n }\n\n constructor(\n readonly peer: string,\n public provider: Peer,\n readonly options: any\n ) {\n super();\n\n this.metadata = options.metadata;\n }\n\n abstract close(): void;\n\n abstract handleMessage(message: ServerMessage): void;\n}\n","import { util } from \"./util\";\nimport logger from \"./logger\";\nimport { Negotiator } from \"./negotiator\";\nimport { ConnectionType, ConnectionEventType, ServerMessageType } from \"./enums\";\nimport { Peer } from \"./peer\";\nimport { BaseConnection } from \"./baseconnection\";\nimport { ServerMessage } from \"./servermessage\";\nimport { AnswerOption } from \"..\";\n\n/**\n * Wraps the streaming interface between two Peers.\n */\nexport class MediaConnection extends BaseConnection {\n private static readonly ID_PREFIX = \"mc_\";\n\n private _negotiator: Negotiator;\n private _localStream: MediaStream;\n private _remoteStream: MediaStream;\n\n get type() {\n return ConnectionType.Media;\n }\n\n get localStream(): MediaStream { return this._localStream; }\n get remoteStream(): MediaStream { return this._remoteStream; }\n\n constructor(peerId: string, provider: Peer, options: any) {\n super(peerId, provider, options);\n\n this._localStream = this.options._stream;\n this.connectionId =\n this.options.connectionId ||\n MediaConnection.ID_PREFIX + util.randomToken();\n\n this._negotiator = new Negotiator(this);\n\n if (this._localStream) {\n this._negotiator.startConnection({\n _stream: this._localStream,\n originator: true\n });\n }\n }\n\n addStream(remoteStream) {\n logger.log(\"Receiving stream\", remoteStream);\n\n this._remoteStream = remoteStream;\n super.emit(ConnectionEventType.Stream, remoteStream); // Should we call this `open`?\n }\n\n handleMessage(message: ServerMessage): void {\n const type = message.type;\n const payload = message.payload;\n\n switch (message.type) {\n case ServerMessageType.Answer:\n // Forward to negotiator\n this._negotiator.handleSDP(type, payload.sdp);\n this._open = true;\n break;\n case ServerMessageType.Candidate:\n this._negotiator.handleCandidate(payload.candidate);\n break;\n default:\n logger.warn(`Unrecognized message type:${type} from peer:${this.peer}`);\n break;\n }\n }\n\n answer(stream: MediaStream, options: AnswerOption = {}): void {\n if (this._localStream) {\n logger.warn(\n \"Local stream already exists on this MediaConnection. Are you answering a call twice?\"\n );\n return;\n }\n\n this._localStream = stream;\n\n if (options && options.sdpTransform) {\n this.options.sdpTransform = options.sdpTransform;\n }\n\n this._negotiator.startConnection({ ...this.options._payload, _stream: stream });\n // Retrieve lost messages stored because PeerConnection not set up.\n const messages = this.provider._getMessages(this.connectionId);\n\n for (let message of messages) {\n this.handleMessage(message);\n }\n\n this._open = true;\n }\n\n /**\n * Exposed functionality for users.\n */\n\n /** Allows user to close connection. */\n close(): void {\n if (this._negotiator) {\n this._negotiator.cleanup();\n this._negotiator = null;\n }\n\n this._localStream = null;\n this._remoteStream = null;\n\n if (this.provider) {\n this.provider._removeConnection(this);\n\n this.provider = null;\n }\n\n if (this.options && this.options._stream) {\n this.options._stream = null;\n }\n\n if (!this.open) {\n return;\n }\n\n this._open = false;\n\n super.emit(ConnectionEventType.Close);\n }\n}\n","import { EventEmitter } from \"eventemitter3\";\nimport logger from \"./logger\";\n\nexport class EncodingQueue extends EventEmitter {\n readonly fileReader: FileReader = new FileReader();\n\n private _queue: Blob[] = [];\n private _processing: boolean = false;\n\n constructor() {\n super();\n\n this.fileReader.onload = (evt) => {\n this._processing = false;\n\n if (evt.target) {\n this.emit('done', evt.target.result as ArrayBuffer);\n }\n\n this.doNextTask();\n };\n\n this.fileReader.onerror = (evt) => {\n logger.error(`EncodingQueue error:`, evt);\n this._processing = false;\n this.destroy();\n this.emit('error', evt);\n }\n }\n\n get queue(): Blob[] {\n return this._queue;\n }\n\n get size(): number {\n return this.queue.length;\n }\n\n get processing(): boolean {\n return this._processing;\n }\n\n enque(blob: Blob): void {\n this.queue.push(blob);\n\n if (this.processing) return;\n\n this.doNextTask();\n }\n\n destroy(): void {\n this.fileReader.abort();\n this._queue = [];\n }\n\n private doNextTask(): void {\n if (this.size === 0) return;\n if (this.processing) return;\n\n this._processing = true;\n\n this.fileReader.readAsArrayBuffer(this.queue.shift());\n }\n}","import { util } from \"./util\";\nimport logger from \"./logger\";\nimport { Negotiator } from \"./negotiator\";\nimport {\n ConnectionType,\n ConnectionEventType,\n SerializationType,\n ServerMessageType\n} from \"./enums\";\nimport { Peer } from \"./peer\";\nimport { BaseConnection } from \"./baseconnection\";\nimport { ServerMessage } from \"./servermessage\";\nimport { EncodingQueue } from './encodingQueue';\nimport { DataConnection as IDataConnection } from '../index';\n\n/**\n * Wraps a DataChannel between two Peers.\n */\nexport class DataConnection extends BaseConnection implements IDataConnection {\n private static readonly ID_PREFIX = \"dc_\";\n private static readonly MAX_BUFFERED_AMOUNT = 8 * 1024 * 1024;\n\n private _negotiator: Negotiator;\n readonly label: string;\n readonly serialization: SerializationType;\n readonly reliable: boolean;\n stringify: (data: any) => string = JSON.stringify;\n parse: (data: string) => any = JSON.parse;\n\n get type() {\n return ConnectionType.Data;\n }\n\n private _buffer: any[] = [];\n private _bufferSize = 0;\n private _buffering = false;\n private _chunkedData: {\n [id: number]: {\n data: Blob[],\n count: number,\n total: number\n }\n } = {};\n\n private _dc: RTCDataChannel;\n private _encodingQueue = new EncodingQueue();\n\n get dataChannel(): RTCDataChannel {\n return this._dc;\n }\n\n get bufferSize(): number { return this._bufferSize; }\n\n constructor(peerId: string, provider: Peer, options: any) {\n super(peerId, provider, options);\n\n this.connectionId =\n this.options.connectionId || DataConnection.ID_PREFIX + util.randomToken();\n\n this.label = this.options.label || this.connectionId;\n this.serialization = this.options.serialization || SerializationType.Binary;\n this.reliable = !!this.options.reliable;\n\n this._encodingQueue.on('done', (ab: ArrayBuffer) => {\n this._bufferedSend(ab);\n });\n\n this._encodingQueue.on('error', () => {\n logger.error(`DC#${this.connectionId}: Error occured in encoding from blob to arraybuffer, close DC`);\n this.close();\n });\n\n this._negotiator = new Negotiator(this);\n\n this._negotiator.startConnection(\n this.options._payload || {\n originator: true\n }\n );\n }\n\n /** Called by the Negotiator when the DataChannel is ready. */\n initialize(dc: RTCDataChannel): void {\n this._dc = dc;\n this._configureDataChannel();\n }\n\n private _configureDataChannel(): void {\n if (!util.supports.binaryBlob || util.supports.reliable) {\n this.dataChannel.binaryType = \"arraybuffer\";\n }\n\n this.dataChannel.onopen = () => {\n logger.log(`DC#${this.connectionId} dc connection success`);\n this._open = true;\n this.emit(ConnectionEventType.Open);\n };\n\n this.dataChannel.onmessage = (e) => {\n logger.log(`DC#${this.connectionId} dc onmessage:`, e.data);\n this._handleDataMessage(e);\n };\n\n this.dataChannel.onclose = () => {\n logger.log(`DC#${this.connectionId} dc closed for:`, this.peer);\n this.close();\n };\n }\n\n // Handles a DataChannel message.\n private _handleDataMessage({ data }: { data: Blob | ArrayBuffer | string }): void {\n const datatype = data.constructor;\n\n const isBinarySerialization = this.serialization === SerializationType.Binary ||\n this.serialization === SerializationType.BinaryUTF8;\n\n let deserializedData: any = data;\n\n if (isBinarySerialization) {\n if (datatype === Blob) {\n // Datatype should never be blob\n util.blobToArrayBuffer(data as Blob, (ab) => {\n const unpackedData = util.unpack(ab);\n this.emit(ConnectionEventType.Data, unpackedData);\n });\n return;\n } else if (datatype === ArrayBuffer) {\n deserializedData = util.unpack(data as ArrayBuffer);\n } else if (datatype === String) {\n // String fallback for binary data for browsers that don't support binary yet\n const ab = util.binaryStringToArrayBuffer(data as string);\n deserializedData = util.unpack(ab);\n }\n } else if (this.serialization === SerializationType.JSON) {\n deserializedData = this.parse(data as string);\n }\n\n // Check if we've chunked--if so, piece things back together.\n // We're guaranteed that this isn't 0.\n if (deserializedData.__peerData) {\n this._handleChunk(deserializedData);\n return;\n }\n\n super.emit(ConnectionEventType.Data, deserializedData);\n }\n\n private _handleChunk(data: { __peerData: number, n: number, total: number, data: Blob }): void {\n const id = data.__peerData;\n const chunkInfo = this._chunkedData[id] || {\n data: [],\n count: 0,\n total: data.total\n };\n\n chunkInfo.data[data.n] = data.data;\n chunkInfo.count++;\n this._chunkedData[id] = chunkInfo;\n\n if (chunkInfo.total === chunkInfo.count) {\n // Clean up before making the recursive call to `_handleDataMessage`.\n delete this._chunkedData[id];\n\n // We've received all the chunks--time to construct the complete data.\n const data = new Blob(chunkInfo.data);\n this._handleDataMessage({ data });\n }\n }\n\n /**\n * Exposed functionality for users.\n */\n\n /** Allows user to close connection. */\n close(): void {\n this._buffer = [];\n this._bufferSize = 0;\n this._chunkedData = {};\n\n if (this._negotiator) {\n this._negotiator.cleanup();\n this._negotiator = null;\n }\n\n if (this.provider) {\n this.provider._removeConnection(this);\n\n this.provider = null;\n }\n\n if (this.dataChannel) {\n this.dataChannel.onopen = null;\n this.dataChannel.onmessage = null;\n this.dataChannel.onclose = null;\n this._dc = null;\n }\n\n if (this._encodingQueue) {\n this._encodingQueue.destroy();\n this._encodingQueue.removeAllListeners();\n this._encodingQueue = null;\n }\n\n if (!this.open) {\n return;\n }\n\n this._open = false;\n\n super.emit(ConnectionEventType.Close);\n }\n\n /** Allows user to send data. */\n send(data: any, chunked?: boolean): void {\n if (!this.open) {\n super.emit(\n ConnectionEventType.Error,\n new Error(\n \"Connection is not open. You should listen for the `open` event before sending messages.\"\n )\n );\n return;\n }\n\n if (this.serialization === SerializationType.JSON) {\n this._bufferedSend(this.stringify(data));\n } else if (\n this.serialization === SerializationType.Binary ||\n this.serialization === SerializationType.BinaryUTF8\n ) {\n const blob = util.pack(data);\n\n if (!chunked && blob.size > util.chunkedMTU) {\n this._sendChunks(blob);\n return;\n }\n\n if (!util.supports.binaryBlob) {\n // We only do this if we really need to (e.g. blobs are not supported),\n // because this conversion is costly.\n this._encodingQueue.enque(blob);\n } else {\n this._bufferedSend(blob);\n }\n } else {\n this._bufferedSend(data);\n }\n }\n\n private _bufferedSend(msg: any): void {\n if (this._buffering || !this._trySend(msg)) {\n this._buffer.push(msg);\n this._bufferSize = this._buffer.length;\n }\n }\n\n // Returns true if the send succeeds.\n private _trySend(msg: any): boolean {\n if (!this.open) {\n return false;\n }\n\n if (this.dataChannel.bufferedAmount > DataConnection.MAX_BUFFERED_AMOUNT) {\n this._buffering = true;\n setTimeout(() => {\n this._buffering = false;\n this._tryBuffer();\n }, 50);\n\n return false;\n }\n\n try {\n this.dataChannel.send(msg);\n } catch (e) {\n logger.error(`DC#:${this.connectionId} Error when sending:`, e);\n this._buffering = true;\n\n this.close();\n\n return false;\n }\n\n return true;\n }\n\n // Try to send the first message in the buffer.\n private _tryBuffer(): void {\n if (!this.open) {\n return;\n }\n\n if (this._buffer.length === 0) {\n return;\n }\n\n const msg = this._buffer[0];\n\n if (this._trySend(msg)) {\n this._buffer.shift();\n this._bufferSize = this._buffer.length;\n this._tryBuffer();\n }\n }\n\n private _sendChunks(blob: Blob): void {\n const blobs = util.chunk(blob);\n logger.log(`DC#${this.connectionId} Try to send ${blobs.length} chunks...`);\n\n for (let blob of blobs) {\n this.send(blob, true);\n }\n }\n\n handleMessage(message: ServerMessage): void {\n const payload = message.payload;\n\n switch (message.type) {\n case ServerMessageType.Answer:\n this._negotiator.handleSDP(message.type, payload.sdp);\n break;\n case ServerMessageType.Candidate:\n this._negotiator.handleCandidate(payload.candidate);\n break;\n default:\n logger.warn(\n \"Unrecognized message type:\",\n message.type,\n \"from peer:\",\n this.peer\n );\n break;\n }\n }\n}\n","import { util } from \"./util\";\nimport logger from \"./logger\";\n\nexport class API {\n constructor(private readonly _options: any) { }\n\n private _buildUrl(method: string): string {\n const protocol = this._options.secure ? \"https://\" : \"http://\";\n let url =\n protocol +\n this._options.host +\n \":\" +\n this._options.port +\n this._options.path +\n this._options.key +\n \"/\" +\n method;\n const queryString = \"?ts=\" + new Date().getTime() + \"\" + Math.random();\n url += queryString;\n\n return url;\n }\n\n /** Get a unique ID from the server via XHR and initialize with it. */\n async retrieveId(): Promise<string> {\n const url = this._buildUrl(\"id\");\n\n try {\n const response = await fetch(url);\n\n if (response.status !== 200) {\n throw new Error(`Error. Status:${response.status}`);\n }\n\n return response.text();\n } catch (error) {\n logger.error(\"Error retrieving ID\", error);\n\n let pathError = \"\";\n\n if (\n this._options.path === \"/\" &&\n this._options.host !== util.CLOUD_HOST\n ) {\n pathError =\n \" If you passed in a `path` to your self-hosted PeerServer, \" +\n \"you'll also need to pass in that same path when creating a new \" +\n \"Peer.\";\n }\n\n throw new Error(\"Could not get an ID from the server.\" + pathError);\n }\n }\n\n /** @deprecated */\n async listAllPeers(): Promise<any[]> {\n const url = this._buildUrl(\"peers\");\n\n try {\n const response = await fetch(url);\n\n if (response.status !== 200) {\n if (response.status === 401) {\n let helpfulError = \"\";\n\n if (this._options.host === util.CLOUD_HOST) {\n helpfulError =\n \"It looks like you're using the cloud server. You can email \" +\n \"team@peerjs.com to enable peer listing for your API key.\";\n } else {\n helpfulError =\n \"You need to enable `allow_discovery` on your self-hosted \" +\n \"PeerServer to use this feature.\";\n }\n\n throw new Error(\"It doesn't look like you have permission to list peers IDs. \" +\n helpfulError);\n }\n\n throw new Error(`Error. Status:${response.status}`);\n }\n\n return response.json();\n } catch (error) {\n logger.error(\"Error retrieving list peers\", error);\n\n throw new Error(\"Could not get list peers from the server.\" + error);\n }\n }\n}\n","import { EventEmitter } from \"eventemitter3\";\nimport { util } from \"./util\";\nimport logger, { LogLevel } from \"./logger\";\nimport { Socket } from \"./socket\";\nimport { MediaConnection } from \"./mediaconnection\";\nimport { DataConnection } from \"./dataconnection\";\nimport {\n ConnectionType,\n PeerErrorType,\n PeerEventType,\n SocketEventType,\n ServerMessageType\n} from \"./enums\";\nimport { BaseConnection } from \"./baseconnection\";\nimport { ServerMessage } from \"./servermessage\";\nimport { API } from \"./api\";\nimport { PeerConnectOption, PeerJSOption } from \"..\";\n\nclass PeerOptions implements PeerJSOption {\n debug?: LogLevel; // 1: Errors, 2: Warnings, 3: All logs\n host?: string;\n port?: number;\n path?: string;\n key?: string;\n token?: string;\n config?: any;\n secure?: boolean;\n pingInterval?: number;\n logFunction?: (logLevel: LogLevel, ...rest: any[]) => void;\n}\n\n/**\n * A peer who can initiate connections with other peers.\n */\nexport class Peer extends EventEmitter {\n private static readonly DEFAULT_KEY = \"peerjs\";\n\n private readonly _options: PeerOptions;\n private readonly _api: API;\n private readonly _socket: Socket;\n\n private _id: string | null = null;\n private _lastServerId: string | null = null;\n\n // States.\n private _destroyed = false; // Connections have been killed\n private _disconnected = false; // Connection to PeerServer killed but P2P connections still active\n private _open = false; // Sockets and such are not yet open.\n private readonly _connections: Map<string, BaseConnection[]> = new Map(); // All connections for this peer.\n private readonly _lostMessages: Map<string, ServerMessage[]> = new Map(); // src => [list of messages]\n\n get id() {\n return this._id;\n }\n\n get options() {\n return this._options;\n }\n\n get open() {\n return this._open;\n }\n\n get socket() {\n return this._socket;\n }\n\n /**\n * @deprecated \n * Return type will change from Object to Map<string,[]> \n */\n get connections(): Object {\n const plainConnections = Object.create(null);\n\n for (let [k, v] of this._connections) {\n plainConnections[k] = v;\n }\n\n return plainConnections;\n }\n\n get destroyed() {\n return this._destroyed;\n }\n get disconnected() {\n return this._disconnected;\n }\n\n constructor(id?: string | PeerOptions, options?: PeerOptions) {\n super();\n\n let userId: string | undefined;\n\n // Deal with overloading\n if (id && id.constructor == Object) {\n options = id as PeerOptions;\n } else if (id) {\n userId = id.toString();\n }\n\n // Configurize options\n options = {\n debug: 0, // 1: Errors, 2: Warnings, 3: All logs\n host: util.CLOUD_HOST,\n port: util.CLOUD_PORT,\n path: \"/\",\n key: Peer.DEFAULT_KEY,\n token: util.randomToken(),\n config: util.defaultConfig,\n ...options\n };\n this._options = options;\n\n // Detect relative URL host.\n if (this._options.host === \"/\") {\n this._options.host = window.location.hostname;\n }\n\n // Set path correctly.\n if (this._options.path) {\n if (this._options.path[0] !== \"/\") {\n this._options.path = \"/\" + this._options.path;\n }\n if (this._options.path[this._options.path.length - 1] !== \"/\") {\n this._options.path += \"/\";\n }\n }\n\n // Set whether we use SSL to same as current host\n if (this._options.secure === undefined && this._options.host !== util.CLOUD_HOST) {\n this._options.secure = util.isSecure();\n } else if (this._options.host == util.CLOUD_HOST) {\n this._options.secure = true;\n }\n // Set a custom log function if present\n if (this._options.logFunction) {\n logger.setLogFunction(this._options.logFunction);\n }\n\n logger.logLevel = this._options.debug || 0;\n\n this._api = new API(options);\n this._socket = this._createServerConnection();\n\n // Sanity checks\n // Ensure WebRTC supported\n if (!util.supports.audioVideo && !util.supports.data) {\n this._delayedAbort(\n PeerErrorType.BrowserIncompatible,\n \"The current browser does not support WebRTC\"\n );\n return;\n }\n\n // Ensure alphanumeric id\n if (!!userId && !util.validateId(userId)) {\n this._delayedAbort(PeerErrorType.InvalidID, `ID \"${userId}\" is invalid`);\n return;\n }\n\n if (userId) {\n this._initialize(userId);\n } else {\n this._api.retrieveId()\n .then(id => this._initialize(id))\n .catch(error => this._abort(PeerErrorType.ServerError, error));\n }\n }\n\n private _createServerConnection(): Socket {\n const socket = new Socket(\n this._options.secure,\n this._options.host!,\n this._options.port!,\n this._options.path!,\n this._options.key!,\n this._options.pingInterval\n );\n\n socket.on(SocketEventType.Message, (data: ServerMessage) => {\n this._handleMessage(data);\n });\n\n socket.on(SocketEventType.Error, (error: string) => {\n this._abort(PeerErrorType.SocketError, error);\n });\n\n socket.on(SocketEventType.Disconnected, () => {\n if (this.disconnected) {\n return;\n }\n\n this.emitError(PeerErrorType.Network, \"Lost connection to server.\");\n this.disconnect();\n });\n\n socket.on(SocketEventType.Close, () => {\n if (this.disconnected) {\n return;\n }\n\n this._abort(PeerErrorType.SocketClosed, \"Underlying socket is already closed.\");\n });\n\n return socket;\n }\n\n /** Initialize a connection with the server. */\n private _initialize(id: string): void {\n this._id = id;\n this.socket.start(id, this._options.token!);\n }\n\n /** Handles messages from the server. */\n private _handleMessage(message: ServerMessage): void {\n const type = message.type;\n const payload = message.payload;\n const peerId = message.src;\n\n switch (type) {\n case ServerMessageType.Open: // The connection to the server is open.\n this._lastServerId = this.id;\n this._open = true;\n this.emit(PeerEventType.Open, this.id);\n break;\n case ServerMessageType.Error: // Server error.\n this._abort(PeerErrorType.ServerError, payload.msg);\n break;\n case ServerMessageType.IdTaken: // The selected ID is taken.\n this._abort(PeerErrorType.UnavailableID, `ID \"${this.id}\" is taken`);\n break;\n case ServerMessageType.InvalidKey: // The given API key cannot be found.\n this._abort(PeerErrorType.InvalidKey, `API KEY \"${this._options.key}\" is invalid`);\n break;\n case ServerMessageType.Leave: // Another peer has closed its connection to this peer.\n logger.log(`Received leave message from ${peerId}`);\n this._cleanupPeer(peerId);\n this._connections.delete(peerId);\n break;\n case ServerMessageType.Expire: // The offer sent to a peer has expired without response.\n this.emitError(PeerErrorType.PeerUnavailable, `Could not connect to peer ${peerId}`);\n break;\n case ServerMessageType.Offer: {\n // we should consider switching this to CALL/CONNECT, but this is the least breaking option.\n const connectionId = payload.connectionId;\n let connection = this.getConnection(peerId, connectionId);\n\n if (connection) {\n connection.close();\n logger.warn(`Offer received for existing Connection ID:${connectionId}`);\n }\n\n // Create a new connection.\n if (payload.type === ConnectionType.Media) {\n connection = new MediaConnection(peerId, this, {\n connectionId: connectionId,\n _payload: payload,\n metadata: payload.metadata\n });\n this._addConnection(peerId, connection);\n this.emit(PeerEventType.Call, connection);\n } else if (payload.type === ConnectionType.Data) {\n connection = new DataConnection(peerId, this, {\n connectionId: connectionId,\n _payload: payload,\n metadata: payload.metadata,\n label: payload.label,\n serialization: payload.serialization,\n reliable: payload.reliable\n });\n this._addConnection(peerId, connection);\n this.emit(PeerEventType.Connection, connection);\n } else {\n logger.warn(`Received malformed connection type:${payload.type}`);\n return;\n }\n\n // Find messages.\n const messages = this._getMessages(connectionId);\n for (let message of messages) {\n connection.handleMessage(message);\n }\n\n break;\n }\n default: {\n if (!payload) {\n logger.warn(`You received a malformed message from ${peerId} of type ${type}`);\n return;\n }\n\n const connectionId = payload.connectionId;\n const connection = this.getConnection(peerId, connectionId);\n\n if (connection && connection.peerConnection) {\n // Pass it on.\n connection.handleMessage(message);\n } else if (connectionId) {\n // Store for possible later use\n this._storeMessage(connectionId, message);\n } else {\n logger.warn(\"You received an unrecognized message:\", message);\n }\n break;\n }\n }\n }\n\n /** Stores messages without a set up connection, to be claimed later. */\n private _storeMessage(connectionId: string, message: ServerMessage): void {\n if (!this._lostMessages.has(connectionId)) {\n this._lostMessages.set(connectionId, []);\n }\n\n this._lostMessages.get(connectionId).push(message);\n }\n\n /** Retrieve messages from lost message store */\n //TODO Change it to private\n public _getMessages(connectionId: string): ServerMessage[] {\n const messages = this._lostMessages.get(connectionId);\n\n if (messages) {\n this._lostMessages.delete(connectionId);\n return messages;\n }\n\n return [];\n }\n\n /**\n * Returns a DataConnection to the specified peer. See documentation for a\n * complete list of options.\n */\n connect(peer: string, options: PeerConnectOption = {}): DataConnection {\n if (this.disconnected) {\n logger.warn(\n \"You cannot connect to a new Peer because you called \" +\n \".disconnect() on this Peer and ended your connection with the \" +\n \"server. You can create a new Peer to reconnect, or call reconnect \" +\n \"on this peer if you believe its ID to still be available.\"\n );\n this.emitError(\n PeerErrorType.Disconnected,\n \"Cannot connect to new Peer after disconnecting from server.\"\n );\n return;\n }\n\n const dataConnection = new DataConnection(peer, this, options);\n this._addConnection(peer, dataConnection);\n return dataConnection;\n }\n\n /**\n * Returns a MediaConnection to the specified peer. See documentation for a\n * complete list of options.\n */\n call(peer: string, stream: MediaStream, options: any = {}): MediaConnection {\n if (this.disconnected) {\n logger.warn(\n \"You cannot connect to a new Peer because you called \" +\n \".disconnect() on this Peer and ended your connection with the \" +\n \"server. You can create a new Peer to reconnect.\"\n );\n this.emitError(\n PeerErrorType.Disconnected,\n \"Cannot connect to new Peer after disconnecting from server.\"\n );\n return;\n }\n\n if (!stream) {\n logger.error(\n \"To call a peer, you must provide a stream from your browser's `getUserMedia`.\"\n );\n return;\n }\n\n options._stream = stream;\n\n const mediaConnection = new MediaConnection(peer, this, options);\n this._addConnection(peer, mediaConnection);\n return mediaConnection;\n }\n\n /** Add a data/media connection to this peer. */\n private _addConnection(peerId: string, connection: BaseConnection): void {\n logger.log(`add connection ${connection.type}:${connection.connectionId} to peerId:${peerId}`);\n\n if (!this._connections.has(peerId)) {\n this._connections.set(peerId, []);\n }\n this._connections.get(peerId).push(connection);\n }\n\n //TODO should be private\n _removeConnection(connection: BaseConnection): void {\n const connections = this._connections.get(connection.peer);\n\n if (connections) {\n const index = connections.indexOf(connection);\n\n if (index !== -1) {\n connections.splice(index, 1);\n }\n }\n\n //remove from lost messages\n this._lostMessages.delete(connection.connectionId);\n }\n\n /** Retrieve a data/media connection for this peer. */\n getConnection(peerId: string, connectionId: string): null | BaseConnection {\n const connections = this._connections.get(peerId);\n if (!connections) {\n return null;\n }\n\n for (let connection of connections) {\n if (connection.connectionId === connectionId) {\n return connection;\n }\n }\n\n return null;\n }\n\n private _delayedAbort(type: PeerErrorType, message: string | Error): void {\n setTimeout(() => {\n this._abort(type, message);\n }, 0);\n }\n\n /**\n * Emits an error message and destroys the Peer.\n * The Peer is not destroyed if it's in a disconnected state, in which case\n * it retains its disconnected state and its existing connections.\n */\n private _abort(type: PeerErrorType, message: string | Error): void {\n logger.error(\"Aborting!\");\n\n this.emitError(type, message);\n\n if (!this._lastServerId) {\n this.destroy();\n } else {\n this.disconnect();\n }\n }\n\n /** Emits a typed error message. */\n emitError(type: PeerErrorType, err: string | Error): void {\n logger.error(\"Error:\", err);\n\n let error: Error & { type?: PeerErrorType };\n\n if (typeof err === \"string\") {\n error = new Error(err);\n } else {\n error = err as Error;\n }\n\n error.type = type;\n\n this.emit(PeerEventType.Error, error);\n }\n\n /**\n * Destroys the Peer: closes all active connections as well as the connection\n * to the server.\n * Warning: The peer can no longer create or accept connections after being\n * destroyed.\n */\n destroy(): void {\n if (this.destroyed) {\n return;\n }\n\n logger.log(`Destroy peer with ID:${this.id}`);\n\n this.disconnect();\n this._cleanup();\n\n this._destroyed = true;\n\n this.emit(PeerEventType.Close);\n }\n\n /** Disconnects every connection on this peer. */\n private _cleanup(): void {\n for (let peerId of this._connections.keys()) {\n this._cleanupPeer(peerId);\n this._connections.delete(peerId);\n }\n\n this.socket.removeAllListeners();\n }\n\n /** Closes all connections to this peer. */\n private _cleanupPeer(peerId: string): void {\n const connections = this._connections.get(peerId);\n\n if (!connections) return;\n\n for (let connection of connections) {\n connection.close();\n }\n }\n\n /**\n * Disconnects the Peer's connection to the PeerServer. Does not close any\n * active connections.\n * Warning: The peer can no longer create or accept connections after being\n * disconnected. It also cannot reconnect to the server.\n */\n disconnect(): void {\n if (this.disconnected) {\n return;\n }\n\n const currentId = this.id;\n\n logger.log(`Disconnect peer with ID:${currentId}`);\n\n this._disconnected = true;\n this._open = false;\n\n this.socket.close();\n\n this._lastServerId = currentId;\n this._id = null;\n\n this.emit(PeerEventType.Disconnected, currentId);\n }\n\n /** Attempts to reconnect with the same ID. */\n reconnect(): void {\n if (this.disconnected && !this.destroyed) {\n logger.log(`Attempting reconnection to server with ID ${this._lastServerId}`);\n this._disconnected = false;\n this._initialize(this._lastServerId!);\n } else if (this.destroyed) {\n throw new Error(\"This peer cannot reconnect to the server. It has already been destroyed.\");\n } else if (!this.disconnected && !this.open) {\n // Do nothing. We're still connecting the first time.\n logger.error(\"In a hurry? We're still trying to make the initial connection!\");\n } else {\n throw new Error(`Peer ${this.id} cannot reconnect because it is not disconnected from the server!`);\n }\n }\n\n /**\n * Get a list of available peer IDs. If you're running your own server, you'll\n * want to set allow_discovery: true in the PeerServer options. If you're using\n * the cloud server, email team@peerjs.com to get the functionality enabled for\n * your key.\n */\n listAllPeers(cb = (_: any[]) => { }): void {\n this._api.listAllPeers()\n .then(peers => cb(peers))\n .catch(error => this._abort(PeerErrorType.ServerError, error));\n }\n}\n","import { util } from \"./util\";\nimport { Peer } from \"./peer\";\n\nexport const peerjs = {\n Peer,\n util\n};\n\nexport default Peer;\n\n(<any>window).peerjs = peerjs;\n/** @deprecated Should use peerjs namespace */\n(<any>window).Peer = Peer;\n"]}
\ No newline at end of file
diff --git a/node_modules/peerjs/dist/peerjs.min.js b/node_modules/peerjs/dist/peerjs.min.js
index d6fe8fa..bb59225 100644
--- a/node_modules/peerjs/dist/peerjs.min.js
+++ b/node_modules/peerjs/dist/peerjs.min.js
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e)if(Object.prototype.hasOwnProperty.call(e,o)){var s=i?Object.getOwnPropertyDescriptor(e,o):null;s&&(s.get||s.set)?Object.defineProperty(r,o,s):r[o]=e[o]}return r.default=e,t&&t.set(e,r),r}function o(e,t,r){return t in e?Object.defineProperty(e,t,{value:r,enumerable:!0,configurable:!0,writable:!0}):e[t]=r,e}function s(e){return(s="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(e)}function a(e){e.MediaStream=e.MediaStream||e.webkitMediaStream}function c(t){if("object"!==s(t)||!t.RTCPeerConnection||"ontrack"in t.RTCPeerConnection.prototype)e.wrapPeerConnectionEvent(t,"track",function(e){return e.transceiver||Object.defineProperty(e,"transceiver",{value:{receiver:e.receiver}}),e});else{Object.defineProperty(t.RTCPeerConnection.prototype,"ontrack",{get:function(){return this._ontrack},set:function(e){this._ontrack&&this.removeEventListener("track",this._ontrack),this.addEventListener("track",this._ontrack=e)},enumerable:!0,configurable:!0});var r=t.RTCPeerConnection.prototype.setRemoteDescription;t.RTCPeerConnection.prototype.setRemoteDescription=function(){var e=this;return this._ontrackpoly||(this._ontrackpoly=function(r){r.stream.addEventListener("addtrack",function(n){var i;i=t.RTCPeerConnection.prototype.getReceivers?e.getReceivers().find(function(e){return e.track&&e.track.id===n.track.id}):{track:n.track};var o=new Event("track");o.track=n.track,o.receiver=i,o.transceiver={receiver:i},o.streams=[r.stream],e.dispatchEvent(o)}),r.stream.getTracks().forEach(function(n){var i;i=t.RTCPeerConnection.prototype.getReceivers?e.getReceivers().find(function(e){return e.track&&e.track.id===n.id}):{track:n};var o=new Event("track");o.track=n,o.receiver=i,o.transceiver={receiver:i},o.streams=[r.stream],e.dispatchEvent(o)})},this.addEventListener("addstream",this._ontrackpoly)),r.apply(this,arguments)}}}function p(e){if("object"===s(e)&&e.RTCPeerConnection&&!("getSenders"in e.RTCPeerConnection.prototype)&&"createDTMFSender"in e.RTCPeerConnection.prototype){var t=function(e,t){return{track:t,get dtmf(){return void 0===this._dtmf&&("audio"===t.kind?this._dtmf=e.createDTMFSender(t):this._dtmf=null),this._dtmf},_pc:e}};if(!e.RTCPeerConnection.prototype.getSenders){e.RTCPeerConnection.prototype.getSenders=function(){return this._senders=this._senders||[],this._senders.slice()};var r=e.RTCPeerConnection.prototype.addTrack;e.RTCPeerConnection.prototype.addTrack=function(e,n){var i=r.apply(this,arguments);return i||(i=t(this,e),this._senders.push(i)),i};var n=e.RTCPeerConnection.prototype.removeTrack;e.RTCPeerConnection.prototype.removeTrack=function(e){n.apply(this,arguments);var t=this._senders.indexOf(e);-1!==t&&this._senders.splice(t,1)}}var i=e.RTCPeerConnection.prototype.addStream;e.RTCPeerConnection.prototype.addStream=function(e){var r=this;this._senders=this._senders||[],i.apply(this,[e]),e.getTracks().forEach(function(e){r._senders.push(t(r,e))})};var o=e.RTCPeerConnection.prototype.removeStream;e.RTCPeerConnection.prototype.removeStream=function(e){var t=this;this._senders=this._senders||[],o.apply(this,[e]),e.getTracks().forEach(function(e){var r=t._senders.find(function(t){return t.track===e});r&&t._senders.splice(t._senders.indexOf(r),1)})}}else if("object"===s(e)&&e.RTCPeerConnection&&"getSenders"in e.RTCPeerConnection.prototype&&"createDTMFSender"in e.RTCPeerConnection.prototype&&e.RTCRtpSender&&!("dtmf"in e.RTCRtpSender.prototype)){var a=e.RTCPeerConnection.prototype.getSenders;e.RTCPeerConnection.prototype.getSenders=function(){var e=this,t=a.apply(this,[]);return t.forEach(function(t){return t._pc=e}),t},Object.defineProperty(e.RTCRtpSender.prototype,"dtmf",{get:function(){return void 0===this._dtmf&&("audio"===this.track.kind?this._dtmf=this._pc.createDTMFSender(this.track):this._dtmf=null),this._dtmf}})}}function d(e){if(e.RTCPeerConnection){var t=e.RTCPeerConnection.prototype.getStats;e.RTCPeerConnection.prototype.getStats=function(){var e=this,[r,n,i]=arguments;if(arguments.length>0&&"function"==typeof r)return t.apply(this,arguments);if(0===t.length&&(0===arguments.length||"function"!=typeof r))return t.apply(this,[]);var o=function(e){var t={};return e.result().forEach(function(e){var r={id:e.id,timestamp:e.timestamp,type:{localcandidate:"local-candidate",remotecandidate:"remote-candidate"}[e.type]||e.type};e.names().forEach(function(t){r[t]=e.stat(t)}),t[r.id]=r}),t},s=function(e){return new Map(Object.keys(e).map(function(t){return[t,e[t]]}))};if(arguments.length>=2){return t.apply(this,[function(e){n(s(o(e)))},r])}return new Promise(function(r,n){t.apply(e,[function(e){r(s(o(e)))},n])}).then(n,i)}}}function h(t){if("object"===s(t)&&t.RTCPeerConnection&&t.RTCRtpSender&&t.RTCRtpReceiver){if(!("getStats"in t.RTCRtpSender.prototype)){var r=t.RTCPeerConnection.prototype.getSenders;r&&(t.RTCPeerConnection.prototype.getSenders=function(){var e=this,t=r.apply(this,[]);return t.forEach(function(t){return t._pc=e}),t});var n=t.RTCPeerConnection.prototype.addTrack;n&&(t.RTCPeerConnection.prototype.addTrack=function(){var e=n.apply(this,arguments);return e._pc=this,e}),t.RTCRtpSender.prototype.getStats=function(){var t=this;return this._pc.getStats().then(function(r){return e.filterStats(r,t.track,!0)})}}if(!("getStats"in t.RTCRtpReceiver.prototype)){var i=t.RTCPeerConnection.prototype.getReceivers;i&&(t.RTCPeerConnection.prototype.getReceivers=function(){var e=this,t=i.apply(this,[]);return t.forEach(function(t){return t._pc=e}),t}),e.wrapPeerConnectionEvent(t,"track",function(e){return e.receiver._pc=e.srcElement,e}),t.RTCRtpReceiver.prototype.getStats=function(){var t=this;return this._pc.getStats().then(function(r){return e.filterStats(r,t.track,!1)})}}if("getStats"in t.RTCRtpSender.prototype&&"getStats"in t.RTCRtpReceiver.prototype){var o=t.RTCPeerConnection.prototype.getStats;t.RTCPeerConnection.prototype.getStats=function(){if(arguments.length>0&&arguments[0]instanceof t.MediaStreamTrack){var e,r,n,i=arguments[0];return this.getSenders().forEach(function(t){t.track===i&&(e?n=!0:e=t)}),this.getReceivers().forEach(function(e){return e.track===i&&(r?n=!0:r=e),e.track===i}),n||e&&r?Promise.reject(new DOMException("There are more than one sender or receiver for the track.","InvalidAccessError")):e?e.getStats():r?r.getStats():Promise.reject(new DOMException("There is no sender or receiver for the track.","InvalidAccessError"))}return o.apply(this,arguments)}}}}function f(e){e.RTCPeerConnection.prototype.getLocalStreams=function(){var e=this;return this._shimmedLocalStreams=this._shimmedLocalStreams||{},Object.keys(this._shimmedLocalStreams).map(function(t){return e._shimmedLocalStreams[t][0]})};var t=e.RTCPeerConnection.prototype.addTrack;e.RTCPeerConnection.prototype.addTrack=function(e,r){if(!r)return t.apply(this,arguments);this._shimmedLocalStreams=this._shimmedLocalStreams||{};var n=t.apply(this,arguments);return this._shimmedLocalStreams[r.id]?-1===this._shimmedLocalStreams[r.id].indexOf(n)&&this._shimmedLocalStreams[r.id].push(n):this._shimmedLocalStreams[r.id]=[r,n],n};var r=e.RTCPeerConnection.prototype.addStream;e.RTCPeerConnection.prototype.addStream=function(e){var t=this;this._shimmedLocalStreams=this._shimmedLocalStreams||{},e.getTracks().forEach(function(e){if(t.getSenders().find(function(t){return t.track===e}))throw new DOMException("Track already exists.","InvalidAccessError")});var n=this.getSenders();r.apply(this,arguments);var i=this.getSenders().filter(function(e){return-1===n.indexOf(e)});this._shimmedLocalStreams[e.id]=[e].concat(i)};var n=e.RTCPeerConnection.prototype.removeStream;e.RTCPeerConnection.prototype.removeStream=function(e){return this._shimmedLocalStreams=this._shimmedLocalStreams||{},delete this._shimmedLocalStreams[e.id],n.apply(this,arguments)};var i=e.RTCPeerConnection.prototype.removeTrack;e.RTCPeerConnection.prototype.removeTrack=function(e){var t=this;return this._shimmedLocalStreams=this._shimmedLocalStreams||{},e&&Object.keys(this._shimmedLocalStreams).forEach(function(r){var n=t._shimmedLocalStreams[r].indexOf(e);-1!==n&&t._shimmedLocalStreams[r].splice(n,1),1===t._shimmedLocalStreams[r].length&&delete t._shimmedLocalStreams[r]}),i.apply(this,arguments)}}function m(e,t){if(e.RTCPeerConnection){if(e.RTCPeerConnection.prototype.addTrack&&t.version>=65)return f(e);var r=e.RTCPeerConnection.prototype.getLocalStreams;e.RTCPeerConnection.prototype.getLocalStreams=function(){var e=this,t=r.apply(this);return this._reverseStreams=this._reverseStreams||{},t.map(function(t){return e._reverseStreams[t.id]})};var n=e.RTCPeerConnection.prototype.addStream;e.RTCPeerConnection.prototype.addStream=function(t){var r=this;if(this._streams=this._streams||{},this._reverseStreams=this._reverseStreams||{},t.getTracks().forEach(function(e){if(r.getSenders().find(function(t){return t.track===e}))throw new DOMException("Track already exists.","InvalidAccessError")}),!this._reverseStreams[t.id]){var i=new e.MediaStream(t.getTracks());this._streams[t.id]=i,this._reverseStreams[i.id]=t,t=i}n.apply(this,[t])};var i=e.RTCPeerConnection.prototype.removeStream;e.RTCPeerConnection.prototype.removeStream=function(e){this._streams=this._streams||{},this._reverseStreams=this._reverseStreams||{},i.apply(this,[this._streams[e.id]||e]),delete this._reverseStreams[this._streams[e.id]?this._streams[e.id].id:e.id],delete this._streams[e.id]},e.RTCPeerConnection.prototype.addTrack=function(t,r){var n=this;if("closed"===this.signalingState)throw new DOMException("The RTCPeerConnection's signalingState is 'closed'.","InvalidStateError");var i=[].slice.call(arguments,1);if(1!==i.length||!i[0].getTracks().find(function(e){return e===t}))throw new DOMException("The adapter.js addTrack polyfill only supports a single stream which is associated with the specified track.","NotSupportedError");if(this.getSenders().find(function(e){return e.track===t}))throw new DOMException("Track already exists.","InvalidAccessError");this._streams=this._streams||{},this._reverseStreams=this._reverseStreams||{};var o=this._streams[r.id];if(o)o.addTrack(t),Promise.resolve().then(function(){n.dispatchEvent(new Event("negotiationneeded"))});else{var s=new e.MediaStream([t]);this._streams[r.id]=s,this._reverseStreams[s.id]=r,this.addStream(s)}return this.getSenders().find(function(e){return e.track===t})},["createOffer","createAnswer"].forEach(function(t){var r=e.RTCPeerConnection.prototype[t],n=o({},t,function(){var e=this,t=arguments;return arguments.length&&"function"==typeof arguments[0]?r.apply(this,[function(r){var n=c(e,r);t[0].apply(null,[n])},function(e){t[1]&&t[1].apply(null,e)},arguments[2]]):r.apply(this,arguments).then(function(t){return c(e,t)})});e.RTCPeerConnection.prototype[t]=n[t]});var s=e.RTCPeerConnection.prototype.setLocalDescription;e.RTCPeerConnection.prototype.setLocalDescription=function(){return arguments.length&&arguments[0].type?(arguments[0]=(e=this,t=arguments[0],r=t.sdp,Object.keys(e._reverseStreams||[]).forEach(function(t){var n=e._reverseStreams[t],i=e._streams[n.id];r=r.replace(new RegExp(n.id,"g"),i.id)}),new RTCSessionDescription({type:t.type,sdp:r})),s.apply(this,arguments)):s.apply(this,arguments);var e,t,r};var a=Object.getOwnPropertyDescriptor(e.RTCPeerConnection.prototype,"localDescription");Object.defineProperty(e.RTCPeerConnection.prototype,"localDescription",{get:function(){var e=a.get.apply(this);return""===e.type?e:c(this,e)}}),e.RTCPeerConnection.prototype.removeTrack=function(e){var t,r=this;if("closed"===this.signalingState)throw new DOMException("The RTCPeerConnection's signalingState is 'closed'.","InvalidStateError");if(!e._pc)throw new DOMException("Argument 1 of RTCPeerConnection.removeTrack does not implement interface RTCRtpSender.","TypeError");if(!(e._pc===this))throw new DOMException("Sender was not created by this connection.","InvalidAccessError");this._streams=this._streams||{},Object.keys(this._streams).forEach(function(n){r._streams[n].getTracks().find(function(t){return e.track===t})&&(t=r._streams[n])}),t&&(1===t.getTracks().length?this.removeStream(this._reverseStreams[t.id]):t.removeTrack(e.track),this.dispatchEvent(new Event("negotiationneeded")))}}function c(e,t){var r=t.sdp;return Object.keys(e._reverseStreams||[]).forEach(function(t){var n=e._reverseStreams[t],i=e._streams[n.id];r=r.replace(new RegExp(i.id,"g"),n.id)}),new RTCSessionDescription({type:t.type,sdp:r})}}function u(e,t){!e.RTCPeerConnection&&e.webkitRTCPeerConnection&&(e.RTCPeerConnection=e.webkitRTCPeerConnection),e.RTCPeerConnection&&t.version<53&&["setLocalDescription","setRemoteDescription","addIceCandidate"].forEach(function(t){var r=e.RTCPeerConnection.prototype[t],n=o({},t,function(){return arguments[0]=new("addIceCandidate"===t?e.RTCIceCandidate:e.RTCSessionDescription)(arguments[0]),r.apply(this,arguments)});e.RTCPeerConnection.prototype[t]=n[t]})}function l(t,r){e.wrapPeerConnectionEvent(t,"negotiationneeded",function(e){var t=e.target;if(!(r.version<72||t.getConfiguration&&"plan-b"===t.getConfiguration().sdpSemantics)||"stable"===t.signalingState)return e})}
-},{"../utils.js":"iSxC","./getusermedia":"s6SN","./getdisplaymedia":"VHa8"}],"NZ1C":[function(require,module,exports) {
-"use strict";Object.defineProperty(exports,"__esModule",{value:!0}),exports.filterIceServers=n;var r=t(require("../utils"));function e(){if("function"!=typeof WeakMap)return null;var r=new WeakMap;return e=function(){return r},r}function t(r){if(r&&r.__esModule)return r;if(null===r||"object"!=typeof r&&"function"!=typeof r)return{default:r};var t=e();if(t&&t.has(r))return t.get(r);var n={},u=Object.defineProperty&&Object.getOwnPropertyDescriptor;for(var i in r)if(Object.prototype.hasOwnProperty.call(r,i)){var f=u?Object.getOwnPropertyDescriptor(r,i):null;f&&(f.get||f.set)?Object.defineProperty(n,i,f):n[i]=r[i]}return n.default=r,t&&t.set(r,n),n}function n(e,t){var n=!1;return(e=JSON.parse(JSON.stringify(e))).filter(function(e){if(e&&(e.urls||e.url)){var t=e.urls||e.url;e.url&&!e.urls&&r.deprecated("RTCIceServer.url","RTCIceServer.urls");var u="string"==typeof t;return u&&(t=[t]),t=t.filter(function(r){if(0===r.indexOf("stun:"))return!1;var e=r.startsWith("turn")&&!r.startsWith("turn:[")&&r.includes("transport=udp");return e&&!n?(n=!0,!0):e&&!n}),delete e.url,e.urls=u?t[0]:t,!!t.length}})}
-},{"../utils":"iSxC"}],"YHvh":[function(require,module,exports) {
-"use strict";var r={generateIdentifier:function(){return Math.random().toString(36).substr(2,10)}};r.localCName=r.generateIdentifier(),r.splitLines=function(r){return r.trim().split("\n").map(function(r){return r.trim()})},r.splitSections=function(r){return r.split("\nm=").map(function(r,e){return(e>0?"m="+r:r).trim()+"\r\n"})},r.getDescription=function(e){var t=r.splitSections(e);return t&&t[0]},r.getMediaSections=function(e){var t=r.splitSections(e);return t.shift(),t},r.matchPrefix=function(e,t){return r.splitLines(e).filter(function(r){return 0===r.indexOf(t)})},r.parseCandidate=function(r){for(var e,t={foundation:(e=0===r.indexOf("a=candidate:")?r.substring(12).split(" "):r.substring(10).split(" "))[0],component:parseInt(e[1],10),protocol:e[2].toLowerCase(),priority:parseInt(e[3],10),ip:e[4],address:e[4],port:parseInt(e[5],10),type:e[7]},a=8;a<e.length;a+=2)switch(e[a]){case"raddr":t.relatedAddress=e[a+1];break;case"rport":t.relatedPort=parseInt(e[a+1],10);break;case"tcptype":t.tcpType=e[a+1];break;case"ufrag":t.ufrag=e[a+1],t.usernameFragment=e[a+1];break;default:t[e[a]]=e[a+1]}return t},r.writeCandidate=function(r){var e=[];e.push(r.foundation),e.push(r.component),e.push(r.protocol.toUpperCase()),e.push(r.priority),e.push(r.address||r.ip),e.push(r.port);var t=r.type;return e.push("typ"),e.push(t),"host"!==t&&r.relatedAddress&&r.relatedPort&&(e.push("raddr"),e.push(r.relatedAddress),e.push("rport"),e.push(r.relatedPort)),r.tcpType&&"tcp"===r.protocol.toLowerCase()&&(e.push("tcptype"),e.push(r.tcpType)),(r.usernameFragment||r.ufrag)&&(e.push("ufrag"),e.push(r.usernameFragment||r.ufrag)),"candidate:"+e.join(" ")},r.parseIceOptions=function(r){return r.substr(14).split(" ")},r.parseRtpMap=function(r){var e=r.substr(9).split(" "),t={payloadType:parseInt(e.shift(),10)};return e=e[0].split("/"),t.name=e[0],t.clockRate=parseInt(e[1],10),t.channels=3===e.length?parseInt(e[2],10):1,t.numChannels=t.channels,t},r.writeRtpMap=function(r){var e=r.payloadType;void 0!==r.preferredPayloadType&&(e=r.preferredPayloadType);var t=r.channels||r.numChannels||1;return"a=rtpmap:"+e+" "+r.name+"/"+r.clockRate+(1!==t?"/"+t:"")+"\r\n"},r.parseExtmap=function(r){var e=r.substr(9).split(" ");return{id:parseInt(e[0],10),direction:e[0].indexOf("/")>0?e[0].split("/")[1]:"sendrecv",uri:e[1]}},r.writeExtmap=function(r){return"a=extmap:"+(r.id||r.preferredId)+(r.direction&&"sendrecv"!==r.direction?"/"+r.direction:"")+" "+r.uri+"\r\n"},r.parseFmtp=function(r){for(var e,t={},a=r.substr(r.indexOf(" ")+1).split(";"),n=0;n<a.length;n++)t[(e=a[n].trim().split("="))[0].trim()]=e[1];return t},r.writeFmtp=function(r){var e="",t=r.payloadType;if(void 0!==r.preferredPayloadType&&(t=r.preferredPayloadType),r.parameters&&Object.keys(r.parameters).length){var a=[];Object.keys(r.parameters).forEach(function(e){r.parameters[e]?a.push(e+"="+r.parameters[e]):a.push(e)}),e+="a=fmtp:"+t+" "+a.join(";")+"\r\n"}return e},r.parseRtcpFb=function(r){var e=r.substr(r.indexOf(" ")+1).split(" ");return{type:e.shift(),parameter:e.join(" ")}},r.writeRtcpFb=function(r){var e="",t=r.payloadType;return void 0!==r.preferredPayloadType&&(t=r.preferredPayloadType),r.rtcpFeedback&&r.rtcpFeedback.length&&r.rtcpFeedback.forEach(function(r){e+="a=rtcp-fb:"+t+" "+r.type+(r.parameter&&r.parameter.length?" "+r.parameter:"")+"\r\n"}),e},r.parseSsrcMedia=function(r){var e=r.indexOf(" "),t={ssrc:parseInt(r.substr(7,e-7),10)},a=r.indexOf(":",e);return a>-1?(t.attribute=r.substr(e+1,a-e-1),t.value=r.substr(a+1)):t.attribute=r.substr(e+1),t},r.parseSsrcGroup=function(r){var e=r.substr(13).split(" ");return{semantics:e.shift(),ssrcs:e.map(function(r){return parseInt(r,10)})}},r.getMid=function(e){var t=r.matchPrefix(e,"a=mid:")[0];if(t)return t.substr(6)},r.parseFingerprint=function(r){var e=r.substr(14).split(" ");return{algorithm:e[0].toLowerCase(),value:e[1]}},r.getDtlsParameters=function(e,t){return{role:"auto",fingerprints:r.matchPrefix(e+t,"a=fingerprint:").map(r.parseFingerprint)}},r.writeDtlsParameters=function(r,e){var t="a=setup:"+e+"\r\n";return r.fingerprints.forEach(function(r){t+="a=fingerprint:"+r.algorithm+" "+r.value+"\r\n"}),t},r.parseCryptoLine=function(r){var e=r.substr(9).split(" ");return{tag:parseInt(e[0],10),cryptoSuite:e[1],keyParams:e[2],sessionParams:e.slice(3)}},r.writeCryptoLine=function(e){return"a=crypto:"+e.tag+" "+e.cryptoSuite+" "+("object"==typeof e.keyParams?r.writeCryptoKeyParams(e.keyParams):e.keyParams)+(e.sessionParams?" "+e.sessionParams.join(" "):"")+"\r\n"},r.parseCryptoKeyParams=function(r){if(0!==r.indexOf("inline:"))return null;var e=r.substr(7).split("|");return{keyMethod:"inline",keySalt:e[0],lifeTime:e[1],mkiValue:e[2]?e[2].split(":")[0]:void 0,mkiLength:e[2]?e[2].split(":")[1]:void 0}},r.writeCryptoKeyParams=function(r){return r.keyMethod+":"+r.keySalt+(r.lifeTime?"|"+r.lifeTime:"")+(r.mkiValue&&r.mkiLength?"|"+r.mkiValue+":"+r.mkiLength:"")},r.getCryptoParameters=function(e,t){return r.matchPrefix(e+t,"a=crypto:").map(r.parseCryptoLine)},r.getIceParameters=function(e,t){var a=r.matchPrefix(e+t,"a=ice-ufrag:")[0],n=r.matchPrefix(e+t,"a=ice-pwd:")[0];return a&&n?{usernameFragment:a.substr(12),password:n.substr(10)}:null},r.writeIceParameters=function(r){return"a=ice-ufrag:"+r.usernameFragment+"\r\na=ice-pwd:"+r.password+"\r\n"},r.parseRtpParameters=function(e){for(var t={codecs:[],headerExtensions:[],fecMechanisms:[],rtcp:[]},a=r.splitLines(e)[0].split(" "),n=3;n<a.length;n++){var s=a[n],i=r.matchPrefix(e,"a=rtpmap:"+s+" ")[0];if(i){var p=r.parseRtpMap(i),c=r.matchPrefix(e,"a=fmtp:"+s+" ");switch(p.parameters=c.length?r.parseFmtp(c[0]):{},p.rtcpFeedback=r.matchPrefix(e,"a=rtcp-fb:"+s+" ").map(r.parseRtcpFb),t.codecs.push(p),p.name.toUpperCase()){case"RED":case"ULPFEC":t.fecMechanisms.push(p.name.toUpperCase())}}}return r.matchPrefix(e,"a=extmap:").forEach(function(e){t.headerExtensions.push(r.parseExtmap(e))}),t},r.writeRtpDescription=function(e,t){var a="";a+="m="+e+" ",a+=t.codecs.length>0?"9":"0",a+=" UDP/TLS/RTP/SAVPF ",a+=t.codecs.map(function(r){return void 0!==r.preferredPayloadType?r.preferredPayloadType:r.payloadType}).join(" ")+"\r\n",a+="c=IN IP4 0.0.0.0\r\n",a+="a=rtcp:9 IN IP4 0.0.0.0\r\n",t.codecs.forEach(function(e){a+=r.writeRtpMap(e),a+=r.writeFmtp(e),a+=r.writeRtcpFb(e)});var n=0;return t.codecs.forEach(function(r){r.maxptime>n&&(n=r.maxptime)}),n>0&&(a+="a=maxptime:"+n+"\r\n"),a+="a=rtcp-mux\r\n",t.headerExtensions&&t.headerExtensions.forEach(function(e){a+=r.writeExtmap(e)}),a},r.parseRtpEncodingParameters=function(e){var t,a=[],n=r.parseRtpParameters(e),s=-1!==n.fecMechanisms.indexOf("RED"),i=-1!==n.fecMechanisms.indexOf("ULPFEC"),p=r.matchPrefix(e,"a=ssrc:").map(function(e){return r.parseSsrcMedia(e)}).filter(function(r){return"cname"===r.attribute}),c=p.length>0&&p[0].ssrc,o=r.matchPrefix(e,"a=ssrc-group:FID").map(function(r){return r.substr(17).split(" ").map(function(r){return parseInt(r,10)})});o.length>0&&o[0].length>1&&o[0][0]===c&&(t=o[0][1]),n.codecs.forEach(function(r){if("RTX"===r.name.toUpperCase()&&r.parameters.apt){var e={ssrc:c,codecPayloadType:parseInt(r.parameters.apt,10)};c&&t&&(e.rtx={ssrc:t}),a.push(e),s&&((e=JSON.parse(JSON.stringify(e))).fec={ssrc:c,mechanism:i?"red+ulpfec":"red"},a.push(e))}}),0===a.length&&c&&a.push({ssrc:c});var u=r.matchPrefix(e,"b=");return u.length&&(u=0===u[0].indexOf("b=TIAS:")?parseInt(u[0].substr(7),10):0===u[0].indexOf("b=AS:")?1e3*parseInt(u[0].substr(5),10)*.95-16e3:void 0,a.forEach(function(r){r.maxBitrate=u})),a},r.parseRtcpParameters=function(e){var t={},a=r.matchPrefix(e,"a=ssrc:").map(function(e){return r.parseSsrcMedia(e)}).filter(function(r){return"cname"===r.attribute})[0];a&&(t.cname=a.value,t.ssrc=a.ssrc);var n=r.matchPrefix(e,"a=rtcp-rsize");t.reducedSize=n.length>0,t.compound=0===n.length;var s=r.matchPrefix(e,"a=rtcp-mux");return t.mux=s.length>0,t},r.parseMsid=function(e){var t,a=r.matchPrefix(e,"a=msid:");if(1===a.length)return{stream:(t=a[0].substr(7).split(" "))[0],track:t[1]};var n=r.matchPrefix(e,"a=ssrc:").map(function(e){return r.parseSsrcMedia(e)}).filter(function(r){return"msid"===r.attribute});return n.length>0?{stream:(t=n[0].value.split(" "))[0],track:t[1]}:void 0},r.parseSctpDescription=function(e){var t,a=r.parseMLine(e),n=r.matchPrefix(e,"a=max-message-size:");n.length>0&&(t=parseInt(n[0].substr(19),10)),isNaN(t)&&(t=65536);var s=r.matchPrefix(e,"a=sctp-port:");if(s.length>0)return{port:parseInt(s[0].substr(12),10),protocol:a.fmt,maxMessageSize:t};if(r.matchPrefix(e,"a=sctpmap:").length>0){var i=r.matchPrefix(e,"a=sctpmap:")[0].substr(10).split(" ");return{port:parseInt(i[0],10),protocol:i[1],maxMessageSize:t}}},r.writeSctpDescription=function(r,e){var t=[];return t="DTLS/SCTP"!==r.protocol?["m="+r.kind+" 9 "+r.protocol+" "+e.protocol+"\r\n","c=IN IP4 0.0.0.0\r\n","a=sctp-port:"+e.port+"\r\n"]:["m="+r.kind+" 9 "+r.protocol+" "+e.port+"\r\n","c=IN IP4 0.0.0.0\r\n","a=sctpmap:"+e.port+" "+e.protocol+" 65535\r\n"],void 0!==e.maxMessageSize&&t.push("a=max-message-size:"+e.maxMessageSize+"\r\n"),t.join("")},r.generateSessionId=function(){return Math.random().toString().substr(2,21)},r.writeSessionBoilerplate=function(e,t,a){var n=void 0!==t?t:2;return"v=0\r\no="+(a||"thisisadapterortc")+" "+(e||r.generateSessionId())+" "+n+" IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\n"},r.writeMediaSection=function(e,t,a,n){var s=r.writeRtpDescription(e.kind,t);if(s+=r.writeIceParameters(e.iceGatherer.getLocalParameters()),s+=r.writeDtlsParameters(e.dtlsTransport.getLocalParameters(),"offer"===a?"actpass":"active"),s+="a=mid:"+e.mid+"\r\n",e.direction?s+="a="+e.direction+"\r\n":e.rtpSender&&e.rtpReceiver?s+="a=sendrecv\r\n":e.rtpSender?s+="a=sendonly\r\n":e.rtpReceiver?s+="a=recvonly\r\n":s+="a=inactive\r\n",e.rtpSender){var i="msid:"+n.id+" "+e.rtpSender.track.id+"\r\n";s+="a="+i,s+="a=ssrc:"+e.sendEncodingParameters[0].ssrc+" "+i,e.sendEncodingParameters[0].rtx&&(s+="a=ssrc:"+e.sendEncodingParameters[0].rtx.ssrc+" "+i,s+="a=ssrc-group:FID "+e.sendEncodingParameters[0].ssrc+" "+e.sendEncodingParameters[0].rtx.ssrc+"\r\n")}return s+="a=ssrc:"+e.sendEncodingParameters[0].ssrc+" cname:"+r.localCName+"\r\n",e.rtpSender&&e.sendEncodingParameters[0].rtx&&(s+="a=ssrc:"+e.sendEncodingParameters[0].rtx.ssrc+" cname:"+r.localCName+"\r\n"),s},r.getDirection=function(e,t){for(var a=r.splitLines(e),n=0;n<a.length;n++)switch(a[n]){case"a=sendrecv":case"a=sendonly":case"a=recvonly":case"a=inactive":return a[n].substr(2)}return t?r.getDirection(t):"sendrecv"},r.getKind=function(e){return r.splitLines(e)[0].split(" ")[0].substr(2)},r.isRejected=function(r){return"0"===r.split(" ",2)[1]},r.parseMLine=function(e){var t=r.splitLines(e)[0].substr(2).split(" ");return{kind:t[0],port:parseInt(t[1],10),protocol:t[2],fmt:t.slice(3).join(" ")}},r.parseOLine=function(e){var t=r.matchPrefix(e,"o=")[0].substr(2).split(" ");return{username:t[0],sessionId:t[1],sessionVersion:parseInt(t[2],10),netType:t[3],addressType:t[4],address:t[5]}},r.isValidSDP=function(e){if("string"!=typeof e||0===e.length)return!1;for(var t=r.splitLines(e),a=0;a<t.length;a++)if(t[a].length<2||"="!==t[a].charAt(1))return!1;return!0},"object"==typeof module&&(module.exports=r);
-},{}],"NJ2u":[function(require,module,exports) {
-"use strict";var e=require("sdp");function t(e){return{inboundrtp:"inbound-rtp",outboundrtp:"outbound-rtp",candidatepair:"candidate-pair",localcandidate:"local-candidate",remotecandidate:"remote-candidate"}[e.type]||e.type}function r(t,r,n,a,i){var s=e.writeRtpDescription(t.kind,r);if(s+=e.writeIceParameters(t.iceGatherer.getLocalParameters()),s+=e.writeDtlsParameters(t.dtlsTransport.getLocalParameters(),"offer"===n?"actpass":i||"active"),s+="a=mid:"+t.mid+"\r\n",t.rtpSender&&t.rtpReceiver?s+="a=sendrecv\r\n":t.rtpSender?s+="a=sendonly\r\n":t.rtpReceiver?s+="a=recvonly\r\n":s+="a=inactive\r\n",t.rtpSender){var o=t.rtpSender._initialTrackId||t.rtpSender.track.id;t.rtpSender._initialTrackId=o;var c="msid:"+(a?a.id:"-")+" "+o+"\r\n";s+="a="+c,s+="a=ssrc:"+t.sendEncodingParameters[0].ssrc+" "+c,t.sendEncodingParameters[0].rtx&&(s+="a=ssrc:"+t.sendEncodingParameters[0].rtx.ssrc+" "+c,s+="a=ssrc-group:FID "+t.sendEncodingParameters[0].ssrc+" "+t.sendEncodingParameters[0].rtx.ssrc+"\r\n")}return s+="a=ssrc:"+t.sendEncodingParameters[0].ssrc+" cname:"+e.localCName+"\r\n",t.rtpSender&&t.sendEncodingParameters[0].rtx&&(s+="a=ssrc:"+t.sendEncodingParameters[0].rtx.ssrc+" cname:"+e.localCName+"\r\n"),s}function n(e,t){var r=!1;return(e=JSON.parse(JSON.stringify(e))).filter(function(e){if(e&&(e.urls||e.url)){var n=e.urls||e.url;e.url&&!e.urls&&console.warn("RTCIceServer.url is deprecated! Use urls instead.");var a="string"==typeof n;return a&&(n=[n]),n=n.filter(function(e){return 0===e.indexOf("turn:")&&-1!==e.indexOf("transport=udp")&&-1===e.indexOf("turn:[")&&!r?(r=!0,!0):0===e.indexOf("stun:")&&t>=14393&&-1===e.indexOf("?transport=udp")}),delete e.url,e.urls=a?n[0]:n,!!n.length}})}function a(e,t){var r={codecs:[],headerExtensions:[],fecMechanisms:[]},n=function(e,t){e=parseInt(e,10);for(var r=0;r<t.length;r++)if(t[r].payloadType===e||t[r].preferredPayloadType===e)return t[r]},a=function(e,t,r,a){var i=n(e.parameters.apt,r),s=n(t.parameters.apt,a);return i&&s&&i.name.toLowerCase()===s.name.toLowerCase()};return e.codecs.forEach(function(n){for(var i=0;i<t.codecs.length;i++){var s=t.codecs[i];if(n.name.toLowerCase()===s.name.toLowerCase()&&n.clockRate===s.clockRate){if("rtx"===n.name.toLowerCase()&&n.parameters&&s.parameters.apt&&!a(n,s,e.codecs,t.codecs))continue;(s=JSON.parse(JSON.stringify(s))).numChannels=Math.min(n.numChannels,s.numChannels),r.codecs.push(s),s.rtcpFeedback=s.rtcpFeedback.filter(function(e){for(var t=0;t<n.rtcpFeedback.length;t++)if(n.rtcpFeedback[t].type===e.type&&n.rtcpFeedback[t].parameter===e.parameter)return!0;return!1});break}}}),e.headerExtensions.forEach(function(e){for(var n=0;n<t.headerExtensions.length;n++){var a=t.headerExtensions[n];if(e.uri===a.uri){r.headerExtensions.push(a);break}}}),r}function i(e,t,r){return-1!=={offer:{setLocalDescription:["stable","have-local-offer"],setRemoteDescription:["stable","have-remote-offer"]},answer:{setLocalDescription:["have-remote-offer","have-local-pranswer"],setRemoteDescription:["have-local-offer","have-remote-pranswer"]}}[t][e].indexOf(r)}function s(e,t){var r=e.getRemoteCandidates().find(function(e){return t.foundation===e.foundation&&t.ip===e.ip&&t.port===e.port&&t.priority===e.priority&&t.protocol===e.protocol&&t.type===e.type});return r||e.addRemoteCandidate(t),!r}function o(e,t){var r=new Error(t);return r.name=e,r.code={NotSupportedError:9,InvalidStateError:11,InvalidAccessError:15,TypeError:void 0,OperationError:void 0}[e],r}module.exports=function(c,d){function p(e,t){t.addTrack(e),t.dispatchEvent(new c.MediaStreamTrackEvent("addtrack",{track:e}))}function l(e,t,r,n){var a=new Event("track");a.track=t,a.receiver=r,a.transceiver={receiver:r},a.streams=n,c.setTimeout(function(){e._dispatchEvent("track",a)})}var f=function(t){var r=this,a=document.createDocumentFragment();if(["addEventListener","removeEventListener","dispatchEvent"].forEach(function(e){r[e]=a[e].bind(a)}),this.canTrickleIceCandidates=null,this.needNegotiation=!1,this.localStreams=[],this.remoteStreams=[],this._localDescription=null,this._remoteDescription=null,this.signalingState="stable",this.iceConnectionState="new",this.connectionState="new",this.iceGatheringState="new",t=JSON.parse(JSON.stringify(t||{})),this.usingBundle="max-bundle"===t.bundlePolicy,"negotiate"===t.rtcpMuxPolicy)throw o("NotSupportedError","rtcpMuxPolicy 'negotiate' is not supported");switch(t.rtcpMuxPolicy||(t.rtcpMuxPolicy="require"),t.iceTransportPolicy){case"all":case"relay":break;default:t.iceTransportPolicy="all"}switch(t.bundlePolicy){case"balanced":case"max-compat":case"max-bundle":break;default:t.bundlePolicy="balanced"}if(t.iceServers=n(t.iceServers||[],d),this._iceGatherers=[],t.iceCandidatePoolSize)for(var i=t.iceCandidatePoolSize;i>0;i--)this._iceGatherers.push(new c.RTCIceGatherer({iceServers:t.iceServers,gatherPolicy:t.iceTransportPolicy}));else t.iceCandidatePoolSize=0;this._config=t,this.transceivers=[],this._sdpSessionId=e.generateSessionId(),this._sdpSessionVersion=0,this._dtlsRole=void 0,this._isClosed=!1};Object.defineProperty(f.prototype,"localDescription",{configurable:!0,get:function(){return this._localDescription}}),Object.defineProperty(f.prototype,"remoteDescription",{configurable:!0,get:function(){return this._remoteDescription}}),f.prototype.onicecandidate=null,f.prototype.onaddstream=null,f.prototype.ontrack=null,f.prototype.onremovestream=null,f.prototype.onsignalingstatechange=null,f.prototype.oniceconnectionstatechange=null,f.prototype.onconnectionstatechange=null,f.prototype.onicegatheringstatechange=null,f.prototype.onnegotiationneeded=null,f.prototype.ondatachannel=null,f.prototype._dispatchEvent=function(e,t){this._isClosed||(this.dispatchEvent(t),"function"==typeof this["on"+e]&&this["on"+e](t))},f.prototype._emitGatheringStateChange=function(){var e=new Event("icegatheringstatechange");this._dispatchEvent("icegatheringstatechange",e)},f.prototype.getConfiguration=function(){return this._config},f.prototype.getLocalStreams=function(){return this.localStreams},f.prototype.getRemoteStreams=function(){return this.remoteStreams},f.prototype._createTransceiver=function(e,t){var r=this.transceivers.length>0,n={track:null,iceGatherer:null,iceTransport:null,dtlsTransport:null,localCapabilities:null,remoteCapabilities:null,rtpSender:null,rtpReceiver:null,kind:e,mid:null,sendEncodingParameters:null,recvEncodingParameters:null,stream:null,associatedRemoteMediaStreams:[],wantReceive:!0};if(this.usingBundle&&r)n.iceTransport=this.transceivers[0].iceTransport,n.dtlsTransport=this.transceivers[0].dtlsTransport;else{var a=this._createIceAndDtlsTransports();n.iceTransport=a.iceTransport,n.dtlsTransport=a.dtlsTransport}return t||this.transceivers.push(n),n},f.prototype.addTrack=function(e,t){if(this._isClosed)throw o("InvalidStateError","Attempted to call addTrack on a closed peerconnection.");var r;if(this.transceivers.find(function(t){return t.track===e}))throw o("InvalidAccessError","Track already exists.");for(var n=0;n<this.transceivers.length;n++)this.transceivers[n].track||this.transceivers[n].kind!==e.kind||(r=this.transceivers[n]);return r||(r=this._createTransceiver(e.kind)),this._maybeFireNegotiationNeeded(),-1===this.localStreams.indexOf(t)&&this.localStreams.push(t),r.track=e,r.stream=t,r.rtpSender=new c.RTCRtpSender(e,r.dtlsTransport),r.rtpSender},f.prototype.addStream=function(e){var t=this;if(d>=15025)e.getTracks().forEach(function(r){t.addTrack(r,e)});else{var r=e.clone();e.getTracks().forEach(function(e,t){var n=r.getTracks()[t];e.addEventListener("enabled",function(e){n.enabled=e.enabled})}),r.getTracks().forEach(function(e){t.addTrack(e,r)})}},f.prototype.removeTrack=function(e){if(this._isClosed)throw o("InvalidStateError","Attempted to call removeTrack on a closed peerconnection.");if(!(e instanceof c.RTCRtpSender))throw new TypeError("Argument 1 of RTCPeerConnection.removeTrack does not implement interface RTCRtpSender.");var t=this.transceivers.find(function(t){return t.rtpSender===e});if(!t)throw o("InvalidAccessError","Sender was not created by this connection.");var r=t.stream;t.rtpSender.stop(),t.rtpSender=null,t.track=null,t.stream=null,-1===this.transceivers.map(function(e){return e.stream}).indexOf(r)&&this.localStreams.indexOf(r)>-1&&this.localStreams.splice(this.localStreams.indexOf(r),1),this._maybeFireNegotiationNeeded()},f.prototype.removeStream=function(e){var t=this;e.getTracks().forEach(function(e){var r=t.getSenders().find(function(t){return t.track===e});r&&t.removeTrack(r)})},f.prototype.getSenders=function(){return this.transceivers.filter(function(e){return!!e.rtpSender}).map(function(e){return e.rtpSender})},f.prototype.getReceivers=function(){return this.transceivers.filter(function(e){return!!e.rtpReceiver}).map(function(e){return e.rtpReceiver})},f.prototype._createIceGatherer=function(e,t){var r=this;if(t&&e>0)return this.transceivers[0].iceGatherer;if(this._iceGatherers.length)return this._iceGatherers.shift();var n=new c.RTCIceGatherer({iceServers:this._config.iceServers,gatherPolicy:this._config.iceTransportPolicy});return Object.defineProperty(n,"state",{value:"new",writable:!0}),this.transceivers[e].bufferedCandidateEvents=[],this.transceivers[e].bufferCandidates=function(t){var a=!t.candidate||0===Object.keys(t.candidate).length;n.state=a?"completed":"gathering",null!==r.transceivers[e].bufferedCandidateEvents&&r.transceivers[e].bufferedCandidateEvents.push(t)},n.addEventListener("localcandidate",this.transceivers[e].bufferCandidates),n},f.prototype._gather=function(t,r){var n=this,a=this.transceivers[r].iceGatherer;if(!a.onlocalcandidate){var i=this.transceivers[r].bufferedCandidateEvents;this.transceivers[r].bufferedCandidateEvents=null,a.removeEventListener("localcandidate",this.transceivers[r].bufferCandidates),a.onlocalcandidate=function(i){if(!(n.usingBundle&&r>0)){var s=new Event("icecandidate");s.candidate={sdpMid:t,sdpMLineIndex:r};var o=i.candidate,c=!o||0===Object.keys(o).length;if(c)"new"!==a.state&&"gathering"!==a.state||(a.state="completed");else{"new"===a.state&&(a.state="gathering"),o.component=1,o.ufrag=a.getLocalParameters().usernameFragment;var d=e.writeCandidate(o);s.candidate=Object.assign(s.candidate,e.parseCandidate(d)),s.candidate.candidate=d,s.candidate.toJSON=function(){return{candidate:s.candidate.candidate,sdpMid:s.candidate.sdpMid,sdpMLineIndex:s.candidate.sdpMLineIndex,usernameFragment:s.candidate.usernameFragment}}}var p=e.getMediaSections(n._localDescription.sdp);p[s.candidate.sdpMLineIndex]+=c?"a=end-of-candidates\r\n":"a="+s.candidate.candidate+"\r\n",n._localDescription.sdp=e.getDescription(n._localDescription.sdp)+p.join("");var l=n.transceivers.every(function(e){return e.iceGatherer&&"completed"===e.iceGatherer.state});"gathering"!==n.iceGatheringState&&(n.iceGatheringState="gathering",n._emitGatheringStateChange()),c||n._dispatchEvent("icecandidate",s),l&&(n._dispatchEvent("icecandidate",new Event("icecandidate")),n.iceGatheringState="complete",n._emitGatheringStateChange())}},c.setTimeout(function(){i.forEach(function(e){a.onlocalcandidate(e)})},0)}},f.prototype._createIceAndDtlsTransports=function(){var e=this,t=new c.RTCIceTransport(null);t.onicestatechange=function(){e._updateIceConnectionState(),e._updateConnectionState()};var r=new c.RTCDtlsTransport(t);return r.ondtlsstatechange=function(){e._updateConnectionState()},r.onerror=function(){Object.defineProperty(r,"state",{value:"failed",writable:!0}),e._updateConnectionState()},{iceTransport:t,dtlsTransport:r}},f.prototype._disposeIceAndDtlsTransports=function(e){var t=this.transceivers[e].iceGatherer;t&&(delete t.onlocalcandidate,delete this.transceivers[e].iceGatherer);var r=this.transceivers[e].iceTransport;r&&(delete r.onicestatechange,delete this.transceivers[e].iceTransport);var n=this.transceivers[e].dtlsTransport;n&&(delete n.ondtlsstatechange,delete n.onerror,delete this.transceivers[e].dtlsTransport)},f.prototype._transceive=function(t,r,n){var i=a(t.localCapabilities,t.remoteCapabilities);r&&t.rtpSender&&(i.encodings=t.sendEncodingParameters,i.rtcp={cname:e.localCName,compound:t.rtcpParameters.compound},t.recvEncodingParameters.length&&(i.rtcp.ssrc=t.recvEncodingParameters[0].ssrc),t.rtpSender.send(i)),n&&t.rtpReceiver&&i.codecs.length>0&&("video"===t.kind&&t.recvEncodingParameters&&d<15019&&t.recvEncodingParameters.forEach(function(e){delete e.rtx}),t.recvEncodingParameters.length?i.encodings=t.recvEncodingParameters:i.encodings=[{}],i.rtcp={compound:t.rtcpParameters.compound},t.rtcpParameters.cname&&(i.rtcp.cname=t.rtcpParameters.cname),t.sendEncodingParameters.length&&(i.rtcp.ssrc=t.sendEncodingParameters[0].ssrc),t.rtpReceiver.receive(i))},f.prototype.setLocalDescription=function(t){var r,n,s=this;if(-1===["offer","answer"].indexOf(t.type))return Promise.reject(o("TypeError",'Unsupported type "'+t.type+'"'));if(!i("setLocalDescription",t.type,s.signalingState)||s._isClosed)return Promise.reject(o("InvalidStateError","Can not set local "+t.type+" in state "+s.signalingState));if("offer"===t.type)r=e.splitSections(t.sdp),n=r.shift(),r.forEach(function(t,r){var n=e.parseRtpParameters(t);s.transceivers[r].localCapabilities=n}),s.transceivers.forEach(function(e,t){s._gather(e.mid,t)});else if("answer"===t.type){r=e.splitSections(s._remoteDescription.sdp),n=r.shift();var c=e.matchPrefix(n,"a=ice-lite").length>0;r.forEach(function(t,r){var i=s.transceivers[r],o=i.iceGatherer,d=i.iceTransport,p=i.dtlsTransport,l=i.localCapabilities,f=i.remoteCapabilities;if(!(e.isRejected(t)&&0===e.matchPrefix(t,"a=bundle-only").length)&&!i.rejected){var u=e.getIceParameters(t,n),v=e.getDtlsParameters(t,n);c&&(v.role="server"),s.usingBundle&&0!==r||(s._gather(i.mid,r),"new"===d.state&&d.start(o,u,c?"controlling":"controlled"),"new"===p.state&&p.start(v));var h=a(l,f);s._transceive(i,h.codecs.length>0,!1)}})}return s._localDescription={type:t.type,sdp:t.sdp},"offer"===t.type?s._updateSignalingState("have-local-offer"):s._updateSignalingState("stable"),Promise.resolve()},f.prototype.setRemoteDescription=function(t){var r=this;if(-1===["offer","answer"].indexOf(t.type))return Promise.reject(o("TypeError",'Unsupported type "'+t.type+'"'));if(!i("setRemoteDescription",t.type,r.signalingState)||r._isClosed)return Promise.reject(o("InvalidStateError","Can not set remote "+t.type+" in state "+r.signalingState));var n={};r.remoteStreams.forEach(function(e){n[e.id]=e});var f=[],u=e.splitSections(t.sdp),v=u.shift(),h=e.matchPrefix(v,"a=ice-lite").length>0,m=e.matchPrefix(v,"a=group:BUNDLE ").length>0;r.usingBundle=m;var g=e.matchPrefix(v,"a=ice-options:")[0];return r.canTrickleIceCandidates=!!g&&g.substr(14).split(" ").indexOf("trickle")>=0,u.forEach(function(i,o){var l=e.splitLines(i),u=e.getKind(i),g=e.isRejected(i)&&0===e.matchPrefix(i,"a=bundle-only").length,y=l[0].substr(2).split(" ")[2],S=e.getDirection(i,v),T=e.parseMsid(i),E=e.getMid(i)||e.generateIdentifier();if(g||"application"===u&&("DTLS/SCTP"===y||"UDP/DTLS/SCTP"===y))r.transceivers[o]={mid:E,kind:u,protocol:y,rejected:!0};else{var C,P,w,R,_,k,b,x,D;!g&&r.transceivers[o]&&r.transceivers[o].rejected&&(r.transceivers[o]=r._createTransceiver(u,!0));var I,L,M=e.parseRtpParameters(i);g||(I=e.getIceParameters(i,v),(L=e.getDtlsParameters(i,v)).role="client"),b=e.parseRtpEncodingParameters(i);var O=e.parseRtcpParameters(i),G=e.matchPrefix(i,"a=end-of-candidates",v).length>0,j=e.matchPrefix(i,"a=candidate:").map(function(t){return e.parseCandidate(t)}).filter(function(e){return 1===e.component});if(("offer"===t.type||"answer"===t.type)&&!g&&m&&o>0&&r.transceivers[o]&&(r._disposeIceAndDtlsTransports(o),r.transceivers[o].iceGatherer=r.transceivers[0].iceGatherer,r.transceivers[o].iceTransport=r.transceivers[0].iceTransport,r.transceivers[o].dtlsTransport=r.transceivers[0].dtlsTransport,r.transceivers[o].rtpSender&&r.transceivers[o].rtpSender.setTransport(r.transceivers[0].dtlsTransport),r.transceivers[o].rtpReceiver&&r.transceivers[o].rtpReceiver.setTransport(r.transceivers[0].dtlsTransport)),"offer"!==t.type||g){if("answer"===t.type&&!g){P=(C=r.transceivers[o]).iceGatherer,w=C.iceTransport,R=C.dtlsTransport,_=C.rtpReceiver,k=C.sendEncodingParameters,x=C.localCapabilities,r.transceivers[o].recvEncodingParameters=b,r.transceivers[o].remoteCapabilities=M,r.transceivers[o].rtcpParameters=O,j.length&&"new"===w.state&&(!h&&!G||m&&0!==o?j.forEach(function(e){s(C.iceTransport,e)}):w.setRemoteCandidates(j)),m&&0!==o||("new"===w.state&&w.start(P,I,"controlling"),"new"===R.state&&R.start(L)),!a(C.localCapabilities,C.remoteCapabilities).codecs.filter(function(e){return"rtx"===e.name.toLowerCase()}).length&&C.sendEncodingParameters[0].rtx&&delete C.sendEncodingParameters[0].rtx,r._transceive(C,"sendrecv"===S||"recvonly"===S,"sendrecv"===S||"sendonly"===S),!_||"sendrecv"!==S&&"sendonly"!==S?delete C.rtpReceiver:(D=_.track,T?(n[T.stream]||(n[T.stream]=new c.MediaStream),p(D,n[T.stream]),f.push([D,_,n[T.stream]])):(n.default||(n.default=new c.MediaStream),p(D,n.default),f.push([D,_,n.default])))}}else{(C=r.transceivers[o]||r._createTransceiver(u)).mid=E,C.iceGatherer||(C.iceGatherer=r._createIceGatherer(o,m)),j.length&&"new"===C.iceTransport.state&&(!G||m&&0!==o?j.forEach(function(e){s(C.iceTransport,e)}):C.iceTransport.setRemoteCandidates(j)),x=c.RTCRtpReceiver.getCapabilities(u),d<15019&&(x.codecs=x.codecs.filter(function(e){return"rtx"!==e.name})),k=C.sendEncodingParameters||[{ssrc:1001*(2*o+2)}];var N,A=!1;if("sendrecv"===S||"sendonly"===S){if(A=!C.rtpReceiver,_=C.rtpReceiver||new c.RTCRtpReceiver(C.dtlsTransport,u),A)D=_.track,T&&"-"===T.stream||(T?(n[T.stream]||(n[T.stream]=new c.MediaStream,Object.defineProperty(n[T.stream],"id",{get:function(){return T.stream}})),Object.defineProperty(D,"id",{get:function(){return T.track}}),N=n[T.stream]):(n.default||(n.default=new c.MediaStream),N=n.default)),N&&(p(D,N),C.associatedRemoteMediaStreams.push(N)),f.push([D,_,N])}else C.rtpReceiver&&C.rtpReceiver.track&&(C.associatedRemoteMediaStreams.forEach(function(e){var t,r,n=e.getTracks().find(function(e){return e.id===C.rtpReceiver.track.id});n&&(t=n,(r=e).removeTrack(t),r.dispatchEvent(new c.MediaStreamTrackEvent("removetrack",{track:t})))}),C.associatedRemoteMediaStreams=[]);C.localCapabilities=x,C.remoteCapabilities=M,C.rtpReceiver=_,C.rtcpParameters=O,C.sendEncodingParameters=k,C.recvEncodingParameters=b,r._transceive(r.transceivers[o],!1,A)}}}),void 0===r._dtlsRole&&(r._dtlsRole="offer"===t.type?"active":"passive"),r._remoteDescription={type:t.type,sdp:t.sdp},"offer"===t.type?r._updateSignalingState("have-remote-offer"):r._updateSignalingState("stable"),Object.keys(n).forEach(function(e){var t=n[e];if(t.getTracks().length){if(-1===r.remoteStreams.indexOf(t)){r.remoteStreams.push(t);var a=new Event("addstream");a.stream=t,c.setTimeout(function(){r._dispatchEvent("addstream",a)})}f.forEach(function(e){var n=e[0],a=e[1];t.id===e[2].id&&l(r,n,a,[t])})}}),f.forEach(function(e){e[2]||l(r,e[0],e[1],[])}),c.setTimeout(function(){r&&r.transceivers&&r.transceivers.forEach(function(e){e.iceTransport&&"new"===e.iceTransport.state&&e.iceTransport.getRemoteCandidates().length>0&&(console.warn("Timeout for addRemoteCandidate. Consider sending an end-of-candidates notification"),e.iceTransport.addRemoteCandidate({}))})},4e3),Promise.resolve()},f.prototype.close=function(){this.transceivers.forEach(function(e){e.iceTransport&&e.iceTransport.stop(),e.dtlsTransport&&e.dtlsTransport.stop(),e.rtpSender&&e.rtpSender.stop(),e.rtpReceiver&&e.rtpReceiver.stop()}),this._isClosed=!0,this._updateSignalingState("closed")},f.prototype._updateSignalingState=function(e){this.signalingState=e;var t=new Event("signalingstatechange");this._dispatchEvent("signalingstatechange",t)},f.prototype._maybeFireNegotiationNeeded=function(){var e=this;"stable"===this.signalingState&&!0!==this.needNegotiation&&(this.needNegotiation=!0,c.setTimeout(function(){if(e.needNegotiation){e.needNegotiation=!1;var t=new Event("negotiationneeded");e._dispatchEvent("negotiationneeded",t)}},0))},f.prototype._updateIceConnectionState=function(){var e,t={new:0,closed:0,checking:0,connected:0,completed:0,disconnected:0,failed:0};if(this.transceivers.forEach(function(e){e.iceTransport&&!e.rejected&&t[e.iceTransport.state]++}),e="new",t.failed>0?e="failed":t.checking>0?e="checking":t.disconnected>0?e="disconnected":t.new>0?e="new":t.connected>0?e="connected":t.completed>0&&(e="completed"),e!==this.iceConnectionState){this.iceConnectionState=e;var r=new Event("iceconnectionstatechange");this._dispatchEvent("iceconnectionstatechange",r)}},f.prototype._updateConnectionState=function(){var e,t={new:0,closed:0,connecting:0,connected:0,completed:0,disconnected:0,failed:0};if(this.transceivers.forEach(function(e){e.iceTransport&&e.dtlsTransport&&!e.rejected&&(t[e.iceTransport.state]++,t[e.dtlsTransport.state]++)}),t.connected+=t.completed,e="new",t.failed>0?e="failed":t.connecting>0?e="connecting":t.disconnected>0?e="disconnected":t.new>0?e="new":t.connected>0&&(e="connected"),e!==this.connectionState){this.connectionState=e;var r=new Event("connectionstatechange");this._dispatchEvent("connectionstatechange",r)}},f.prototype.createOffer=function(){var t=this;if(t._isClosed)return Promise.reject(o("InvalidStateError","Can not call createOffer after close"));var n=t.transceivers.filter(function(e){return"audio"===e.kind}).length,a=t.transceivers.filter(function(e){return"video"===e.kind}).length,i=arguments[0];if(i){if(i.mandatory||i.optional)throw new TypeError("Legacy mandatory/optional constraints not supported.");void 0!==i.offerToReceiveAudio&&(n=!0===i.offerToReceiveAudio?1:!1===i.offerToReceiveAudio?0:i.offerToReceiveAudio),void 0!==i.offerToReceiveVideo&&(a=!0===i.offerToReceiveVideo?1:!1===i.offerToReceiveVideo?0:i.offerToReceiveVideo)}for(t.transceivers.forEach(function(e){"audio"===e.kind?--n<0&&(e.wantReceive=!1):"video"===e.kind&&--a<0&&(e.wantReceive=!1)});n>0||a>0;)n>0&&(t._createTransceiver("audio"),n--),a>0&&(t._createTransceiver("video"),a--);var s=e.writeSessionBoilerplate(t._sdpSessionId,t._sdpSessionVersion++);t.transceivers.forEach(function(r,n){var a=r.track,i=r.kind,s=r.mid||e.generateIdentifier();r.mid=s,r.iceGatherer||(r.iceGatherer=t._createIceGatherer(n,t.usingBundle));var o=c.RTCRtpSender.getCapabilities(i);d<15019&&(o.codecs=o.codecs.filter(function(e){return"rtx"!==e.name})),o.codecs.forEach(function(e){"H264"===e.name&&void 0===e.parameters["level-asymmetry-allowed"]&&(e.parameters["level-asymmetry-allowed"]="1"),r.remoteCapabilities&&r.remoteCapabilities.codecs&&r.remoteCapabilities.codecs.forEach(function(t){e.name.toLowerCase()===t.name.toLowerCase()&&e.clockRate===t.clockRate&&(e.preferredPayloadType=t.payloadType)})}),o.headerExtensions.forEach(function(e){(r.remoteCapabilities&&r.remoteCapabilities.headerExtensions||[]).forEach(function(t){e.uri===t.uri&&(e.id=t.id)})});var p=r.sendEncodingParameters||[{ssrc:1001*(2*n+1)}];a&&d>=15019&&"video"===i&&!p[0].rtx&&(p[0].rtx={ssrc:p[0].ssrc+1}),r.wantReceive&&(r.rtpReceiver=new c.RTCRtpReceiver(r.dtlsTransport,i)),r.localCapabilities=o,r.sendEncodingParameters=p}),"max-compat"!==t._config.bundlePolicy&&(s+="a=group:BUNDLE "+t.transceivers.map(function(e){return e.mid}).join(" ")+"\r\n"),s+="a=ice-options:trickle\r\n",t.transceivers.forEach(function(n,a){s+=r(n,n.localCapabilities,"offer",n.stream,t._dtlsRole),s+="a=rtcp-rsize\r\n",!n.iceGatherer||"new"===t.iceGatheringState||0!==a&&t.usingBundle||(n.iceGatherer.getLocalCandidates().forEach(function(t){t.component=1,s+="a="+e.writeCandidate(t)+"\r\n"}),"completed"===n.iceGatherer.state&&(s+="a=end-of-candidates\r\n"))});var p=new c.RTCSessionDescription({type:"offer",sdp:s});return Promise.resolve(p)},f.prototype.createAnswer=function(){var t=this;if(t._isClosed)return Promise.reject(o("InvalidStateError","Can not call createAnswer after close"));if("have-remote-offer"!==t.signalingState&&"have-local-pranswer"!==t.signalingState)return Promise.reject(o("InvalidStateError","Can not call createAnswer in signalingState "+t.signalingState));var n=e.writeSessionBoilerplate(t._sdpSessionId,t._sdpSessionVersion++);t.usingBundle&&(n+="a=group:BUNDLE "+t.transceivers.map(function(e){return e.mid}).join(" ")+"\r\n"),n+="a=ice-options:trickle\r\n";var i=e.getMediaSections(t._remoteDescription.sdp).length;t.transceivers.forEach(function(e,s){if(!(s+1>i)){if(e.rejected)return"application"===e.kind?"DTLS/SCTP"===e.protocol?n+="m=application 0 DTLS/SCTP 5000\r\n":n+="m=application 0 "+e.protocol+" webrtc-datachannel\r\n":"audio"===e.kind?n+="m=audio 0 UDP/TLS/RTP/SAVPF 0\r\na=rtpmap:0 PCMU/8000\r\n":"video"===e.kind&&(n+="m=video 0 UDP/TLS/RTP/SAVPF 120\r\na=rtpmap:120 VP8/90000\r\n"),void(n+="c=IN IP4 0.0.0.0\r\na=inactive\r\na=mid:"+e.mid+"\r\n");var o;if(e.stream)"audio"===e.kind?o=e.stream.getAudioTracks()[0]:"video"===e.kind&&(o=e.stream.getVideoTracks()[0]),o&&d>=15019&&"video"===e.kind&&!e.sendEncodingParameters[0].rtx&&(e.sendEncodingParameters[0].rtx={ssrc:e.sendEncodingParameters[0].ssrc+1});var c=a(e.localCapabilities,e.remoteCapabilities);!c.codecs.filter(function(e){return"rtx"===e.name.toLowerCase()}).length&&e.sendEncodingParameters[0].rtx&&delete e.sendEncodingParameters[0].rtx,n+=r(e,c,"answer",e.stream,t._dtlsRole),e.rtcpParameters&&e.rtcpParameters.reducedSize&&(n+="a=rtcp-rsize\r\n")}});var s=new c.RTCSessionDescription({type:"answer",sdp:n});return Promise.resolve(s)},f.prototype.addIceCandidate=function(t){var r,n=this;return t&&void 0===t.sdpMLineIndex&&!t.sdpMid?Promise.reject(new TypeError("sdpMLineIndex or sdpMid required")):new Promise(function(a,i){if(!n._remoteDescription)return i(o("InvalidStateError","Can not add ICE candidate without a remote description"));if(t&&""!==t.candidate){var c=t.sdpMLineIndex;if(t.sdpMid)for(var d=0;d<n.transceivers.length;d++)if(n.transceivers[d].mid===t.sdpMid){c=d;break}var p=n.transceivers[c];if(!p)return i(o("OperationError","Can not add ICE candidate"));if(p.rejected)return a();var l=Object.keys(t.candidate).length>0?e.parseCandidate(t.candidate):{};if("tcp"===l.protocol&&(0===l.port||9===l.port))return a();if(l.component&&1!==l.component)return a();if((0===c||c>0&&p.iceTransport!==n.transceivers[0].iceTransport)&&!s(p.iceTransport,l))return i(o("OperationError","Can not add ICE candidate"));var f=t.candidate.trim();0===f.indexOf("a=")&&(f=f.substr(2)),(r=e.getMediaSections(n._remoteDescription.sdp))[c]+="a="+(l.type?f:"end-of-candidates")+"\r\n",n._remoteDescription.sdp=e.getDescription(n._remoteDescription.sdp)+r.join("")}else for(var u=0;u<n.transceivers.length&&(n.transceivers[u].rejected||(n.transceivers[u].iceTransport.addRemoteCandidate({}),(r=e.getMediaSections(n._remoteDescription.sdp))[u]+="a=end-of-candidates\r\n",n._remoteDescription.sdp=e.getDescription(n._remoteDescription.sdp)+r.join(""),!n.usingBundle));u++);a()})},f.prototype.getStats=function(e){if(e&&e instanceof c.MediaStreamTrack){var t=null;if(this.transceivers.forEach(function(r){r.rtpSender&&r.rtpSender.track===e?t=r.rtpSender:r.rtpReceiver&&r.rtpReceiver.track===e&&(t=r.rtpReceiver)}),!t)throw o("InvalidAccessError","Invalid selector.");return t.getStats()}var r=[];return this.transceivers.forEach(function(e){["rtpSender","rtpReceiver","iceGatherer","iceTransport","dtlsTransport"].forEach(function(t){e[t]&&r.push(e[t].getStats())})}),Promise.all(r).then(function(e){var t=new Map;return e.forEach(function(e){e.forEach(function(e){t.set(e.id,e)})}),t})};["RTCRtpSender","RTCRtpReceiver","RTCIceGatherer","RTCIceTransport","RTCDtlsTransport"].forEach(function(e){var r=c[e];if(r&&r.prototype&&r.prototype.getStats){var n=r.prototype.getStats;r.prototype.getStats=function(){return n.apply(this).then(function(e){var r=new Map;return Object.keys(e).forEach(function(n){e[n].type=t(e[n]),r.set(n,e[n])}),r})}}});var u=["createOffer","createAnswer"];return u.forEach(function(e){var t=f.prototype[e];f.prototype[e]=function(){var e=arguments;return"function"==typeof e[0]||"function"==typeof e[1]?t.apply(this,[arguments[2]]).then(function(t){"function"==typeof e[0]&&e[0].apply(null,[t])},function(t){"function"==typeof e[1]&&e[1].apply(null,[t])}):t.apply(this,arguments)}}),(u=["setLocalDescription","setRemoteDescription","addIceCandidate"]).forEach(function(e){var t=f.prototype[e];f.prototype[e]=function(){var e=arguments;return"function"==typeof e[1]||"function"==typeof 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e)if(Object.prototype.hasOwnProperty.call(e,i)){var a=o?Object.getOwnPropertyDescriptor(e,i):null;a&&(a.get||a.set)?Object.defineProperty(n,i,a):n[i]=e[i]}return n.default=e,t&&t.set(e,n),n}function i(e,t,n){return t in e?Object.defineProperty(e,t,{value:n,enumerable:!0,configurable:!0,writable:!0}):e[t]=n,e}function a(e){return(a="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(e)}function s(e){"object"===a(e)&&e.RTCTrackEvent&&"receiver"in e.RTCTrackEvent.prototype&&!("transceiver"in e.RTCTrackEvent.prototype)&&Object.defineProperty(e.RTCTrackEvent.prototype,"transceiver",{get:function(){return{receiver:this.receiver}}})}function c(e,t){if("object"===a(e)&&(e.RTCPeerConnection||e.mozRTCPeerConnection)){!e.RTCPeerConnection&&e.mozRTCPeerConnection&&(e.RTCPeerConnection=e.mozRTCPeerConnection),t.version<53&&["setLocalDescription","setRemoteDescription","addIceCandidate"].forEach(function(t){var n=e.RTCPeerConnection.prototype[t],r=i({},t,function(){return arguments[0]=new("addIceCandidate"===t?e.RTCIceCandidate:e.RTCSessionDescription)(arguments[0]),n.apply(this,arguments)});e.RTCPeerConnection.prototype[t]=r[t]});var n={inboundrtp:"inbound-rtp",outboundrtp:"outbound-rtp",candidatepair:"candidate-pair",localcandidate:"local-candidate",remotecandidate:"remote-candidate"},r=e.RTCPeerConnection.prototype.getStats;e.RTCPeerConnection.prototype.getStats=function(){var[e,o,i]=arguments;return r.apply(this,[e||null]).then(function(e){if(t.version<53&&!o)try{e.forEach(function(e){e.type=n[e.type]||e.type})}catch(r){if("TypeError"!==r.name)throw r;e.forEach(function(t,r){e.set(r,Object.assign({},t,{type:n[t.type]||t.type}))})}return e}).then(o,i)}}}function p(e){if("object"===a(e)&&e.RTCPeerConnection&&e.RTCRtpSender&&!(e.RTCRtpSender&&"getStats"in e.RTCRtpSender.prototype)){var t=e.RTCPeerConnection.prototype.getSenders;t&&(e.RTCPeerConnection.prototype.getSenders=function(){var e=this,n=t.apply(this,[]);return n.forEach(function(t){return t._pc=e}),n});var n=e.RTCPeerConnection.prototype.addTrack;n&&(e.RTCPeerConnection.prototype.addTrack=function(){var e=n.apply(this,arguments);return e._pc=this,e}),e.RTCRtpSender.prototype.getStats=function(){return this.track?this._pc.getStats(this.track):Promise.resolve(new Map)}}}function u(t){if("object"===a(t)&&t.RTCPeerConnection&&t.RTCRtpSender&&!(t.RTCRtpSender&&"getStats"in t.RTCRtpReceiver.prototype)){var n=t.RTCPeerConnection.prototype.getReceivers;n&&(t.RTCPeerConnection.prototype.getReceivers=function(){var e=this,t=n.apply(this,[]);return t.forEach(function(t){return t._pc=e}),t}),e.wrapPeerConnectionEvent(t,"track",function(e){return e.receiver._pc=e.srcElement,e}),t.RTCRtpReceiver.prototype.getStats=function(){return this._pc.getStats(this.track)}}}function f(t){!t.RTCPeerConnection||"removeStream"in t.RTCPeerConnection.prototype||(t.RTCPeerConnection.prototype.removeStream=function(t){var n=this;e.deprecated("removeStream","removeTrack"),this.getSenders().forEach(function(e){e.track&&t.getTracks().includes(e.track)&&n.removeTrack(e)})})}function d(e){e.DataChannel&&!e.RTCDataChannel&&(e.RTCDataChannel=e.DataChannel)}function C(e){if("object"===a(e)&&e.RTCPeerConnection){var t=e.RTCPeerConnection.prototype.addTransceiver;t&&(e.RTCPeerConnection.prototype.addTransceiver=function(){this.setParametersPromises=[];var e=arguments[1],n=e&&"sendEncodings"in e;n&&e.sendEncodings.forEach(function(e){if("rid"in e){if(!/^[a-z0-9]{0,16}$/i.test(e.rid))throw new TypeError("Invalid RID value provided.")}if("scaleResolutionDownBy"in e&&!(parseFloat(e.scaleResolutionDownBy)>=1))throw new RangeError("scale_resolution_down_by must be >= 1.0");if("maxFramerate"in e&&!(parseFloat(e.maxFramerate)>=0))throw new RangeError("max_framerate must be >= 0.0")});var r=t.apply(this,arguments);if(n){var{sender:o}=r,i=o.getParameters();"encodings"in i&&(1!==i.encodings.length||0!==Object.keys(i.encodings[0]).length)||(i.encodings=e.sendEncodings,o.sendEncodings=e.sendEncodings,this.setParametersPromises.push(o.setParameters(i).then(function(){delete o.sendEncodings}).catch(function(){delete o.sendEncodings})))}return r})}}function y(e){if("object"===a(e)&&e.RTCRtpSender){var t=e.RTCRtpSender.prototype.getParameters;t&&(e.RTCRtpSender.prototype.getParameters=function(){var e=t.apply(this,arguments);return"encodings"in e||(e.encodings=[].concat(this.sendEncodings||[{}])),e})}}function l(e){if("object"===a(e)&&e.RTCPeerConnection){var t=e.RTCPeerConnection.prototype.createOffer;e.RTCPeerConnection.prototype.createOffer=function(){var e=arguments,n=this;return this.setParametersPromises&&this.setParametersPromises.length?Promise.all(this.setParametersPromises).then(function(){return t.apply(n,e)}).finally(function(){n.setParametersPromises=[]}):t.apply(this,arguments)}}}function m(e){if("object"===a(e)&&e.RTCPeerConnection){var t=e.RTCPeerConnection.prototype.createAnswer;e.RTCPeerConnection.prototype.createAnswer=function(){var e=arguments,n=this;return this.setParametersPromises&&this.setParametersPromises.length?Promise.all(this.setParametersPromises).then(function(){return t.apply(n,e)}).finally(function(){n.setParametersPromises=[]}):t.apply(this,arguments)}}}
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typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(e)}function n(e){if("object"===o(e)&&e.RTCPeerConnection){if("getLocalStreams"in e.RTCPeerConnection.prototype||(e.RTCPeerConnection.prototype.getLocalStreams=function(){return this._localStreams||(this._localStreams=[]),this._localStreams}),!("addStream"in e.RTCPeerConnection.prototype)){var t=e.RTCPeerConnection.prototype.addTrack;e.RTCPeerConnection.prototype.addStream=function(e){var r=this;this._localStreams||(this._localStreams=[]),this._localStreams.includes(e)||this._localStreams.push(e),e.getAudioTracks().forEach(function(o){return t.call(r,o,e)}),e.getVideoTracks().forEach(function(o){return t.call(r,o,e)})},e.RTCPeerConnection.prototype.addTrack=function(e){for(var r=this,o=arguments.length,n=new Array(o>1?o-1:0),i=1;i<o;i++)n[i-1]=arguments[i];return n&&n.forEach(function(e){r._localStreams?r._localStreams.includes(e)||r._localStreams.push(e):r._localStreams=[e]}),t.apply(this,arguments)}}"removeStream"in e.RTCPeerConnection.prototype||(e.RTCPeerConnection.prototype.removeStream=function(e){var t=this;this._localStreams||(this._localStreams=[]);var r=this._localStreams.indexOf(e);if(-1!==r){this._localStreams.splice(r,1);var o=e.getTracks();this.getSenders().forEach(function(e){o.includes(e.track)&&t.removeTrack(e)})}})}}function i(e){if("object"===o(e)&&e.RTCPeerConnection&&("getRemoteStreams"in e.RTCPeerConnection.prototype||(e.RTCPeerConnection.prototype.getRemoteStreams=function(){return this._remoteStreams?this._remoteStreams:[]}),!("onaddstream"in e.RTCPeerConnection.prototype))){Object.defineProperty(e.RTCPeerConnection.prototype,"onaddstream",{get:function(){return this._onaddstream},set:function(e){var t=this;this._onaddstream&&(this.removeEventListener("addstream",this._onaddstream),this.removeEventListener("track",this._onaddstreampoly)),this.addEventListener("addstream",this._onaddstream=e),this.addEventListener("track",this._onaddstreampoly=function(e){e.streams.forEach(function(e){if(t._remoteStreams||(t._remoteStreams=[]),!t._remoteStreams.includes(e)){t._remoteStreams.push(e);var r=new Event("addstream");r.stream=e,t.dispatchEvent(r)}})})}});var t=e.RTCPeerConnection.prototype.setRemoteDescription;e.RTCPeerConnection.prototype.setRemoteDescription=function(){var e=this;return this._onaddstreampoly||this.addEventListener("track",this._onaddstreampoly=function(t){t.streams.forEach(function(t){if(e._remoteStreams||(e._remoteStreams=[]),!(e._remoteStreams.indexOf(t)>=0)){e._remoteStreams.push(t);var r=new Event("addstream");r.stream=t,e.dispatchEvent(r)}})}),t.apply(e,arguments)}}}function a(e){if("object"===o(e)&&e.RTCPeerConnection){var t=e.RTCPeerConnection.prototype,r=t.createOffer,n=t.createAnswer,i=t.setLocalDescription,a=t.setRemoteDescription,c=t.addIceCandidate;t.createOffer=function(e,t){var o=arguments.length>=2?arguments[2]:arguments[0],n=r.apply(this,[o]);return t?(n.then(e,t),Promise.resolve()):n},t.createAnswer=function(e,t){var r=arguments.length>=2?arguments[2]:arguments[0],o=n.apply(this,[r]);return t?(o.then(e,t),Promise.resolve()):o};var s=function(e,t,r){var o=i.apply(this,[e]);return r?(o.then(t,r),Promise.resolve()):o};t.setLocalDescription=s,s=function(e,t,r){var o=a.apply(this,[e]);return r?(o.then(t,r),Promise.resolve()):o},t.setRemoteDescription=s,s=function(e,t,r){var o=c.apply(this,[e]);return r?(o.then(t,r),Promise.resolve()):o},t.addIceCandidate=s}}function c(e){var t=e&&e.navigator;if(t.mediaDevices&&t.mediaDevices.getUserMedia){var r=t.mediaDevices,o=r.getUserMedia.bind(r);t.mediaDevices.getUserMedia=function(e){return o(s(e))}}!t.getUserMedia&&t.mediaDevices&&t.mediaDevices.getUserMedia&&(t.getUserMedia=function(e,r,o){t.mediaDevices.getUserMedia(e).then(r,o)}.bind(t))}function s(t){return t&&void 0!==t.video?Object.assign({},t,{video:e.compactObject(t.video)}):t}function d(t){if(t.RTCPeerConnection){var r=t.RTCPeerConnection;t.RTCPeerConnection=function(t,o){if(t&&t.iceServers){for(var n=[],i=0;i<t.iceServers.length;i++){var a=t.iceServers[i];!a.hasOwnProperty("urls")&&a.hasOwnProperty("url")?(e.deprecated("RTCIceServer.url","RTCIceServer.urls"),(a=JSON.parse(JSON.stringify(a))).urls=a.url,delete a.url,n.push(a)):n.push(t.iceServers[i])}t.iceServers=n}return new r(t,o)},t.RTCPeerConnection.prototype=r.prototype,"generateCertificate"in r&&Object.defineProperty(t.RTCPeerConnection,"generateCertificate",{get:function(){return r.generateCertificate}})}}function f(e){"object"===o(e)&&e.RTCTrackEvent&&"receiver"in e.RTCTrackEvent.prototype&&!("transceiver"in e.RTCTrackEvent.prototype)&&Object.defineProperty(e.RTCTrackEvent.prototype,"transceiver",{get:function(){return{receiver:this.receiver}}})}function p(e){var t=e.RTCPeerConnection.prototype.createOffer;e.RTCPeerConnection.prototype.createOffer=function(e){if(e){void 0!==e.offerToReceiveAudio&&(e.offerToReceiveAudio=!!e.offerToReceiveAudio);var r=this.getTransceivers().find(function(e){return"audio"===e.receiver.track.kind});!1===e.offerToReceiveAudio&&r?"sendrecv"===r.direction?r.setDirection?r.setDirection("sendonly"):r.direction="sendonly":"recvonly"===r.direction&&(r.setDirection?r.setDirection("inactive"):r.direction="inactive"):!0!==e.offerToReceiveAudio||r||this.addTransceiver("audio"),void 0!==e.offerToReceiveVideo&&(e.offerToReceiveVideo=!!e.offerToReceiveVideo);var o=this.getTransceivers().find(function(e){return"video"===e.receiver.track.kind});!1===e.offerToReceiveVideo&&o?"sendrecv"===o.direction?o.setDirection?o.setDirection("sendonly"):o.direction="sendonly":"recvonly"===o.direction&&(o.setDirection?o.setDirection("inactive"):o.direction="inactive"):!0!==e.offerToReceiveVideo||o||this.addTransceiver("video")}return t.apply(this,arguments)}}function u(e){"object"!==o(e)||e.AudioContext||(e.AudioContext=e.webkitAudioContext)}
-},{"../utils":"iSxC"}],"GOQK":[function(require,module,exports) {
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typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e})(e)}function a(n){if(n.RTCIceCandidate&&!(n.RTCIceCandidate&&"foundation"in n.RTCIceCandidate.prototype)){var o=n.RTCIceCandidate;n.RTCIceCandidate=function(t){if("object"===i(t)&&t.candidate&&0===t.candidate.indexOf("a=")&&((t=JSON.parse(JSON.stringify(t))).candidate=t.candidate.substr(2)),t.candidate&&t.candidate.length){var n=new o(t),r=e.default.parseCandidate(t.candidate),a=Object.assign(n,r);return a.toJSON=function(){return{candidate:a.candidate,sdpMid:a.sdpMid,sdpMLineIndex:a.sdpMLineIndex,usernameFragment:a.usernameFragment}},a}return new o(t)},n.RTCIceCandidate.prototype=o.prototype,t.wrapPeerConnectionEvent(n,"icecandidate",function(e){return e.candidate&&Object.defineProperty(e,"candidate",{value:new n.RTCIceCandidate(e.candidate),writable:"false"}),e})}}function c(t,n){if(t.RTCPeerConnection){"sctp"in t.RTCPeerConnection.prototype||Object.defineProperty(t.RTCPeerConnection.prototype,"sctp",{get:function(){return void 0===this._sctp?null:this._sctp}});var o=t.RTCPeerConnection.prototype.setRemoteDescription;t.RTCPeerConnection.prototype.setRemoteDescription=function(){if(this._sctp=null,"chrome"===n.browser&&n.version>=76){var{sdpSemantics:t}=this.getConfiguration();"plan-b"===t&&Object.defineProperty(this,"sctp",{get:function(){return void 0===this._sctp?null:this._sctp},enumerable:!0,configurable:!0})}if(function(t){if(!t||!t.sdp)return!1;var n=e.default.splitSections(t.sdp);return n.shift(),n.some(function(t){var n=e.default.parseMLine(t);return n&&"application"===n.kind&&-1!==n.protocol.indexOf("SCTP")})}(arguments[0])){var r,i=function(e){var t=e.sdp.match(/mozilla...THIS_IS_SDPARTA-(\d+)/);if(null===t||t.length<2)return-1;var n=parseInt(t[1],10);return n!=n?-1:n}(arguments[0]),a=(p=i,d=65536,"firefox"===n.browser&&(d=n.version<57?-1===p?16384:2147483637:n.version<60?57===n.version?65535:65536:2147483637),d),c=function(t,o){var r=65536;"firefox"===n.browser&&57===n.version&&(r=65535);var i=e.default.matchPrefix(t.sdp,"a=max-message-size:");return i.length>0?r=parseInt(i[0].substr(19),10):"firefox"===n.browser&&-1!==o&&(r=2147483637),r}(arguments[0],i);r=0===a&&0===c?Number.POSITIVE_INFINITY:0===a||0===c?Math.max(a,c):Math.min(a,c);var s={};Object.defineProperty(s,"maxMessageSize",{get:function(){return r}}),this._sctp=s}var p,d;return o.apply(this,arguments)}}}function s(e){if(e.RTCPeerConnection&&"createDataChannel"in e.RTCPeerConnection.prototype){var n=e.RTCPeerConnection.prototype.createDataChannel;e.RTCPeerConnection.prototype.createDataChannel=function(){var e=n.apply(this,arguments);return o(e,this),e},t.wrapPeerConnectionEvent(e,"datachannel",function(e){return o(e.channel,e.target),e})}function o(e,t){var n=e.send;e.send=function(){var o=arguments[0],r=o.length||o.size||o.byteLength;if("open"===e.readyState&&t.sctp&&r>t.sctp.maxMessageSize)throw new TypeError("Message too large (can send a maximum of "+t.sctp.maxMessageSize+" bytes)");return n.apply(e,arguments)}}}function p(e){if(e.RTCPeerConnection&&!("connectionState"in e.RTCPeerConnection.prototype)){var t=e.RTCPeerConnection.prototype;Object.defineProperty(t,"connectionState",{get:function(){return{completed:"connected",checking:"connecting"}[this.iceConnectionState]||this.iceConnectionState},enumerable:!0,configurable:!0}),Object.defineProperty(t,"onconnectionstatechange",{get:function(){return this._onconnectionstatechange||null},set:function(e){this._onconnectionstatechange&&(this.removeEventListener("connectionstatechange",this._onconnectionstatechange),delete this._onconnectionstatechange),e&&this.addEventListener("connectionstatechange",this._onconnectionstatechange=e)},enumerable:!0,configurable:!0}),["setLocalDescription","setRemoteDescription"].forEach(function(e){var n=t[e];t[e]=function(){return this._connectionstatechangepoly||(this._connectionstatechangepoly=function(e){var t=e.target;if(t._lastConnectionState!==t.connectionState){t._lastConnectionState=t.connectionState;var n=new Event("connectionstatechange",e);t.dispatchEvent(n)}return e},this.addEventListener("iceconnectionstatechange",this._connectionstatechangepoly)),n.apply(this,arguments)}})}}function d(e,t){if(e.RTCPeerConnection&&!("chrome"===t.browser&&t.version>=71||"safari"===t.browser&&t.version>=605)){var n=e.RTCPeerConnection.prototype.setRemoteDescription;e.RTCPeerConnection.prototype.setRemoteDescription=function(t){if(t&&t.sdp&&-1!==t.sdp.indexOf("\na=extmap-allow-mixed")){var o=t.sdp.split("\n").filter(function(e){return"a=extmap-allow-mixed"!==e.trim()}).join("\n");e.RTCSessionDescription&&t instanceof e.RTCSessionDescription?arguments[0]=new e.RTCSessionDescription({type:t.type,sdp:o}):t.sdp=o}return n.apply(this,arguments)}}}function u(e,t){if(e.RTCPeerConnection&&e.RTCPeerConnection.prototype){var n=e.RTCPeerConnection.prototype.addIceCandidate;n&&0!==n.length&&(e.RTCPeerConnection.prototype.addIceCandidate=function(){return arguments[0]?("chrome"===t.browser&&t.version<78||"firefox"===t.browser&&t.version<68||"safari"===t.browser)&&arguments[0]&&""===arguments[0].candidate?Promise.resolve():n.apply(this,arguments):(arguments[1]&&arguments[1].apply(null),Promise.resolve())})}}
-},{"sdp":"YHvh","./utils":"iSxC"}],"KtlG":[function(require,module,exports) {
-"use strict";Object.defineProperty(exports,"__esModule",{value:!0}),exports.adapterFactory=o;var e=m(require("./utils")),i=m(require("./chrome/chrome_shim")),r=m(require("./edge/edge_shim")),s=m(require("./firefox/firefox_shim")),t=m(require("./safari/safari_shim")),a=m(require("./common_shim"));function n(){if("function"!=typeof WeakMap)return null;var e=new WeakMap;return n=function(){return e},e}function m(e){if(e&&e.__esModule)return e;if(null===e||"object"!=typeof e&&"function"!=typeof e)return{default:e};var i=n();if(i&&i.has(e))return i.get(e);var r={},s=Object.defineProperty&&Object.getOwnPropertyDescriptor;for(var t in e)if(Object.prototype.hasOwnProperty.call(e,t)){var a=s?Object.getOwnPropertyDescriptor(e,t):null;a&&(a.get||a.set)?Object.defineProperty(r,t,a):r[t]=e[t]}return r.default=e,i&&i.set(e,r),r}function o(){var{window:n}=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},m=arguments.length>1&&void 0!==arguments[1]?arguments[1]:{shimChrome:!0,shimFirefox:!0,shimEdge:!0,shimSafari:!0},o=e.log,h=e.detectBrowser(n),d={browserDetails:h,commonShim:a,extractVersion:e.extractVersion,disableLog:e.disableLog,disableWarnings:e.disableWarnings};switch(h.browser){case"chrome":if(!i||!i.shimPeerConnection||!m.shimChrome)return o("Chrome shim is not included in this adapter release."),d;if(null===h.version)return o("Chrome shim can not determine version, not shimming."),d;o("adapter.js shimming chrome."),d.browserShim=i,a.shimAddIceCandidateNullOrEmpty(n,h),i.shimGetUserMedia(n,h),i.shimMediaStream(n,h),i.shimPeerConnection(n,h),i.shimOnTrack(n,h),i.shimAddTrackRemoveTrack(n,h),i.shimGetSendersWithDtmf(n,h),i.shimGetStats(n,h),i.shimSenderReceiverGetStats(n,h),i.fixNegotiationNeeded(n,h),a.shimRTCIceCandidate(n,h),a.shimConnectionState(n,h),a.shimMaxMessageSize(n,h),a.shimSendThrowTypeError(n,h),a.removeExtmapAllowMixed(n,h);break;case"firefox":if(!s||!s.shimPeerConnection||!m.shimFirefox)return o("Firefox shim is not included in this adapter release."),d;o("adapter.js shimming firefox."),d.browserShim=s,a.shimAddIceCandidateNullOrEmpty(n,h),s.shimGetUserMedia(n,h),s.shimPeerConnection(n,h),s.shimOnTrack(n,h),s.shimRemoveStream(n,h),s.shimSenderGetStats(n,h),s.shimReceiverGetStats(n,h),s.shimRTCDataChannel(n,h),s.shimAddTransceiver(n,h),s.shimGetParameters(n,h),s.shimCreateOffer(n,h),s.shimCreateAnswer(n,h),a.shimRTCIceCandidate(n,h),a.shimConnectionState(n,h),a.shimMaxMessageSize(n,h),a.shimSendThrowTypeError(n,h);break;case"edge":if(!r||!r.shimPeerConnection||!m.shimEdge)return o("MS edge shim is not included in this adapter release."),d;o("adapter.js shimming edge."),d.browserShim=r,r.shimGetUserMedia(n,h),r.shimGetDisplayMedia(n,h),r.shimPeerConnection(n,h),r.shimReplaceTrack(n,h),a.shimMaxMessageSize(n,h),a.shimSendThrowTypeError(n,h);break;case"safari":if(!t||!m.shimSafari)return o("Safari shim is not included in this adapter release."),d;o("adapter.js shimming safari."),d.browserShim=t,a.shimAddIceCandidateNullOrEmpty(n,h),t.shimRTCIceServerUrls(n,h),t.shimCreateOfferLegacy(n,h),t.shimCallbacksAPI(n,h),t.shimLocalStreamsAPI(n,h),t.shimRemoteStreamsAPI(n,h),t.shimTrackEventTransceiver(n,h),t.shimGetUserMedia(n,h),t.shimAudioContext(n,h),a.shimRTCIceCandidate(n,h),a.shimMaxMessageSize(n,h),a.shimSendThrowTypeError(n,h),a.removeExtmapAllowMixed(n,h);break;default:o("Unsupported browser!")}return d}
-},{"./utils":"iSxC","./chrome/chrome_shim":"uI5X","./edge/edge_shim":"XRic","./firefox/firefox_shim":"Fzdr","./safari/safari_shim":"t1lL","./common_shim":"GOQK"}],"tI1X":[function(require,module,exports) {
-"use strict";Object.defineProperty(exports,"__esModule",{value:!0}),exports.default=void 0;var e=require("./adapter_factory.js"),t=(0,e.adapterFactory)({window:"undefined"==typeof window?void 0:window}),d=t;exports.default=d;
-},{"./adapter_factory.js":"KtlG"}],"sXtV":[function(require,module,exports) {
-"use strict";var e=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(exports,"__esModule",{value:!0}),exports.webRTCAdapter=void 0;var t=e(require("webrtc-adapter"));exports.webRTCAdapter=t.default;
-},{"webrtc-adapter":"tI1X"}],"I31f":[function(require,module,exports) {
-"use strict";Object.defineProperty(exports,"__esModule",{value:!0}),exports.Supports=void 0;var r=require("./adapter");exports.Supports=new(function(){function e(){this.isIOS=["iPad","iPhone","iPod"].includes(navigator.platform),this.supportedBrowsers=["firefox","chrome","safari"],this.minFirefoxVersion=59,this.minChromeVersion=72,this.minSafariVersion=605}return e.prototype.isWebRTCSupported=function(){return"undefined"!=typeof RTCPeerConnection},e.prototype.isBrowserSupported=function(){var r=this.getBrowser(),e=this.getVersion();return!!this.supportedBrowsers.includes(r)&&("chrome"===r?e>=this.minChromeVersion:"firefox"===r?e>=this.minFirefoxVersion:"safari"===r&&(!this.isIOS&&e>=this.minSafariVersion))},e.prototype.getBrowser=function(){return r.webRTCAdapter.browserDetails.browser},e.prototype.getVersion=function(){return r.webRTCAdapter.browserDetails.version||0},e.prototype.isUnifiedPlanSupported=function(){var e,i=this.getBrowser(),t=r.webRTCAdapter.browserDetails.version||0;if("chrome"===i&&t<72)return!1;if("firefox"===i&&t>=59)return!0;if(!(window.RTCRtpTransceiver&&"currentDirection"in RTCRtpTransceiver.prototype))return!1;var o=!1;try{(e=new RTCPeerConnection).addTransceiver("audio"),o=!0}catch(s){}finally{e&&e.close()}return o},e.prototype.toString=function(){return"Supports: \n browser:"+this.getBrowser()+" \n version:"+this.getVersion()+" \n isIOS:"+this.isIOS+" \n isWebRTCSupported:"+this.isWebRTCSupported()+" \n isBrowserSupported:"+this.isBrowserSupported()+" \n isUnifiedPlanSupported:"+this.isUnifiedPlanSupported()},e}());
-},{"./adapter":"sXtV"}],"BHXf":[function(require,module,exports) {
-"use strict";var e=this&&this.__createBinding||(Object.create?function(e,t,r,o){void 0===o&&(o=r),Object.defineProperty(e,o,{enumerable:!0,get:function(){return t[r]}})}:function(e,t,r,o){void 0===o&&(o=r),e[o]=t[r]}),t=this&&this.__setModuleDefault||(Object.create?function(e,t){Object.defineProperty(e,"default",{enumerable:!0,value:t})}:function(e,t){e.default=t}),r=this&&this.__importStar||function(r){if(r&&r.__esModule)return r;var o={};if(null!=r)for(var n in r)"default"!==n&&Object.prototype.hasOwnProperty.call(r,n)&&e(o,r,n);return t(o,r),o};Object.defineProperty(exports,"__esModule",{value:!0}),exports.util=void 0;var o=r(require("peerjs-js-binarypack")),n=require("./supports"),i={iceServers:[{urls:"stun:stun.l.google.com:19302"},{urls:"turn:0.peerjs.com:3478",username:"peerjs",credential:"peerjsp"}],sdpSemantics:"unified-plan"};exports.util=new(function(){function e(){this.CLOUD_HOST="0.peerjs.com",this.CLOUD_PORT=443,this.chunkedBrowsers={Chrome:1,chrome:1},this.chunkedMTU=16300,this.defaultConfig=i,this.browser=n.Supports.getBrowser(),this.browserVersion=n.Supports.getVersion(),this.supports=function(){var e,t={browser:n.Supports.isBrowserSupported(),webRTC:n.Supports.isWebRTCSupported(),audioVideo:!1,data:!1,binaryBlob:!1,reliable:!1};if(!t.webRTC)return t;try{e=new RTCPeerConnection(i),t.audioVideo=!0;var r=void 0;try{r=e.createDataChannel("_PEERJSTEST",{ordered:!0}),t.data=!0,t.reliable=!!r.ordered;try{r.binaryType="blob",t.binaryBlob=!n.Supports.isIOS}catch(o){}}catch(o){}finally{r&&r.close()}}catch(o){}finally{e&&e.close()}return t}(),this.pack=o.pack,this.unpack=o.unpack,this._dataCount=1}return e.prototype.noop=function(){},e.prototype.validateId=function(e){return!e||/^[A-Za-z0-9]+(?:[ _-][A-Za-z0-9]+)*$/.test(e)},e.prototype.chunk=function(e){for(var t=[],r=e.size,o=Math.ceil(r/exports.util.chunkedMTU),n=0,i=0;i<r;){var a=Math.min(r,i+exports.util.chunkedMTU),u=e.slice(i,a),s={__peerData:this._dataCount,n:n,data:u,total:o};t.push(s),i=a,n++}return this._dataCount++,t},e.prototype.blobToArrayBuffer=function(e,t){var r=new FileReader;return r.onload=function(e){e.target&&t(e.target.result)},r.readAsArrayBuffer(e),r},e.prototype.binaryStringToArrayBuffer=function(e){for(var t=new Uint8Array(e.length),r=0;r<e.length;r++)t[r]=255&e.charCodeAt(r);return t.buffer},e.prototype.randomToken=function(){return Math.random().toString(36).substr(2)},e.prototype.isSecure=function(){return"https:"===location.protocol},e}());
-},{"peerjs-js-binarypack":"kdPp","./supports":"I31f"}],"JJlS":[function(require,module,exports) {
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-"use strict";var r=this&&this.__read||function(r,e){var o="function"==typeof Symbol&&r[Symbol.iterator];if(!o)return r;var t,n,l=o.call(r),i=[];try{for(;(void 0===e||e-- >0)&&!(t=l.next()).done;)i.push(t.value)}catch(s){n={error:s}}finally{try{t&&!t.done&&(o=l.return)&&o.call(l)}finally{if(n)throw n.error}}return i},e=this&&this.__spreadArray||function(r,e){for(var o=0,t=e.length,n=r.length;o<t;o++,n++)r[n]=e[o];return r};Object.defineProperty(exports,"__esModule",{value:!0}),exports.LogLevel=void 0;var o,t="PeerJS: ";!function(r){r[r.Disabled=0]="Disabled",r[r.Errors=1]="Errors",r[r.Warnings=2]="Warnings",r[r.All=3]="All"}(o=exports.LogLevel||(exports.LogLevel={}));var n=function(){function n(){this._logLevel=o.Disabled}return Object.defineProperty(n.prototype,"logLevel",{get:function(){return this._logLevel},set:function(r){this._logLevel=r},enumerable:!1,configurable:!0}),n.prototype.log=function(){for(var t=[],n=0;n<arguments.length;n++)t[n]=arguments[n];this._logLevel>=o.All&&this._print.apply(this,e([o.All],r(t)))},n.prototype.warn=function(){for(var t=[],n=0;n<arguments.length;n++)t[n]=arguments[n];this._logLevel>=o.Warnings&&this._print.apply(this,e([o.Warnings],r(t)))},n.prototype.error=function(){for(var t=[],n=0;n<arguments.length;n++)t[n]=arguments[n];this._logLevel>=o.Errors&&this._print.apply(this,e([o.Errors],r(t)))},n.prototype.setLogFunction=function(r){this._print=r},n.prototype._print=function(n){for(var l=[],i=1;i<arguments.length;i++)l[i-1]=arguments[i];var s=e([t],r(l));for(var a in s)s[a]instanceof Error&&(s[a]="("+s[a].name+") "+s[a].message);n>=o.All?console.log.apply(console,e([],r(s))):n>=o.Warnings?console.warn.apply(console,e(["WARNING"],r(s))):n>=o.Errors&&console.error.apply(console,e(["ERROR"],r(s)))},n}();exports.default=new n;
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-"use strict";var e,r,o,n,t,a,i;Object.defineProperty(exports,"__esModule",{value:!0}),exports.ServerMessageType=exports.SocketEventType=exports.SerializationType=exports.PeerErrorType=exports.PeerEventType=exports.ConnectionType=exports.ConnectionEventType=void 0,function(e){e.Open="open",e.Stream="stream",e.Data="data",e.Close="close",e.Error="error",e.IceStateChanged="iceStateChanged"}(e=exports.ConnectionEventType||(exports.ConnectionEventType={})),function(e){e.Data="data",e.Media="media"}(r=exports.ConnectionType||(exports.ConnectionType={})),function(e){e.Open="open",e.Close="close",e.Connection="connection",e.Call="call",e.Disconnected="disconnected",e.Error="error"}(o=exports.PeerEventType||(exports.PeerEventType={})),function(e){e.BrowserIncompatible="browser-incompatible",e.Disconnected="disconnected",e.InvalidID="invalid-id",e.InvalidKey="invalid-key",e.Network="network",e.PeerUnavailable="peer-unavailable",e.SslUnavailable="ssl-unavailable",e.ServerError="server-error",e.SocketError="socket-error",e.SocketClosed="socket-closed",e.UnavailableID="unavailable-id",e.WebRTC="webrtc"}(n=exports.PeerErrorType||(exports.PeerErrorType={})),function(e){e.Binary="binary",e.BinaryUTF8="binary-utf8",e.JSON="json"}(t=exports.SerializationType||(exports.SerializationType={})),function(e){e.Message="message",e.Disconnected="disconnected",e.Error="error",e.Close="close"}(a=exports.SocketEventType||(exports.SocketEventType={})),function(e){e.Heartbeat="HEARTBEAT",e.Candidate="CANDIDATE",e.Offer="OFFER",e.Answer="ANSWER",e.Open="OPEN",e.Error="ERROR",e.IdTaken="ID-TAKEN",e.InvalidKey="INVALID-KEY",e.Leave="LEAVE",e.Expire="EXPIRE"}(i=exports.ServerMessageType||(exports.ServerMessageType={}));
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o(e){this.connection=e}return o.prototype.startConnection=function(e){var n=this._startPeerConnection();if(this.connection.peerConnection=n,this.connection.type===c.ConnectionType.Media&&e._stream&&this._addTracksToConnection(e._stream,n),e.originator){if(this.connection.type===c.ConnectionType.Data){var t=this.connection,o={ordered:!!e.reliable},i=n.createDataChannel(t.label,o);t.initialize(i)}this._makeOffer()}else this.handleSDP("OFFER",e.sdp)},o.prototype._startPeerConnection=function(){r.default.log("Creating RTCPeerConnection.");var e=new RTCPeerConnection(this.connection.provider.options.config);return this._setupListeners(e),e},o.prototype._setupListeners=function(e){var n=this,t=this.connection.peer,o=this.connection.connectionId,a=this.connection.type,s=this.connection.provider;r.default.log("Listening for ICE candidates."),e.onicecandidate=function(e){e.candidate&&e.candidate.candidate&&(r.default.log("Received ICE candidates for "+t+":",e.candidate),s.socket.send({type:c.ServerMessageType.Candidate,payload:{candidate:e.candidate,type:a,connectionId:o},dst:t}))},e.oniceconnectionstatechange=function(){switch(e.iceConnectionState){case"failed":r.default.log("iceConnectionState is failed, closing connections to "+t),n.connection.emit(c.ConnectionEventType.Error,new Error("Negotiation of connection to "+t+" failed.")),n.connection.close();break;case"closed":r.default.log("iceConnectionState is closed, closing connections to "+t),n.connection.emit(c.ConnectionEventType.Error,new Error("Connection to "+t+" closed.")),n.connection.close();break;case"disconnected":r.default.log("iceConnectionState changed to disconnected on the connection with "+t);break;case"completed":e.onicecandidate=i.util.noop}n.connection.emit(c.ConnectionEventType.IceStateChanged,e.iceConnectionState)},r.default.log("Listening for data channel"),e.ondatachannel=function(e){r.default.log("Received data channel");var n=e.channel;s.getConnection(t,o).initialize(n)},r.default.log("Listening for remote stream"),e.ontrack=function(e){r.default.log("Received remote stream");var i=e.streams[0],a=s.getConnection(t,o);if(a.type===c.ConnectionType.Media){var d=a;n._addStreamToMediaConnection(i,d)}}},o.prototype.cleanup=function(){r.default.log("Cleaning up PeerConnection to "+this.connection.peer);var e=this.connection.peerConnection;if(e){this.connection.peerConnection=null,e.onicecandidate=e.oniceconnectionstatechange=e.ondatachannel=e.ontrack=function(){};var n="closed"!==e.signalingState,t=!1;if(this.connection.type===c.ConnectionType.Data){var o=this.connection.dataChannel;o&&(t=!!o.readyState&&"closed"!==o.readyState)}(n||t)&&e.close()}},o.prototype._makeOffer=function(){return n(this,void 0,Promise,function(){var n,o,a,s,d,l,u;return t(this,function(t){switch(t.label){case 0:n=this.connection.peerConnection,o=this.connection.provider,t.label=1;case 1:return t.trys.push([1,7,,8]),[4,n.createOffer(this.connection.options.constraints)];case 2:a=t.sent(),r.default.log("Created offer."),this.connection.options.sdpTransform&&"function"==typeof this.connection.options.sdpTransform&&(a.sdp=this.connection.options.sdpTransform(a.sdp)||a.sdp),t.label=3;case 3:return t.trys.push([3,5,,6]),[4,n.setLocalDescription(a)];case 4:return t.sent(),r.default.log("Set localDescription:",a,"for:"+this.connection.peer),s={sdp:a,type:this.connection.type,connectionId:this.connection.connectionId,metadata:this.connection.metadata,browser:i.util.browser},this.connection.type===c.ConnectionType.Data&&(d=this.connection,s=e(e({},s),{label:d.label,reliable:d.reliable,serialization:d.serialization})),o.socket.send({type:c.ServerMessageType.Offer,payload:s,dst:this.connection.peer}),[3,6];case 5:return"OperationError: Failed to set local offer sdp: Called in wrong state: kHaveRemoteOffer"!=(l=t.sent())&&(o.emitError(c.PeerErrorType.WebRTC,l),r.default.log("Failed to setLocalDescription, ",l)),[3,6];case 6:return[3,8];case 7:return u=t.sent(),o.emitError(c.PeerErrorType.WebRTC,u),r.default.log("Failed to createOffer, ",u),[3,8];case 8:return[2]}})})},o.prototype._makeAnswer=function(){return n(this,void 0,Promise,function(){var e,n,o,a,s;return t(this,function(t){switch(t.label){case 0:e=this.connection.peerConnection,n=this.connection.provider,t.label=1;case 1:return t.trys.push([1,7,,8]),[4,e.createAnswer()];case 2:o=t.sent(),r.default.log("Created answer."),this.connection.options.sdpTransform&&"function"==typeof this.connection.options.sdpTransform&&(o.sdp=this.connection.options.sdpTransform(o.sdp)||o.sdp),t.label=3;case 3:return t.trys.push([3,5,,6]),[4,e.setLocalDescription(o)];case 4:return t.sent(),r.default.log("Set localDescription:",o,"for:"+this.connection.peer),n.socket.send({type:c.ServerMessageType.Answer,payload:{sdp:o,type:this.connection.type,connectionId:this.connection.connectionId,browser:i.util.browser},dst:this.connection.peer}),[3,6];case 5:return a=t.sent(),n.emitError(c.PeerErrorType.WebRTC,a),r.default.log("Failed to setLocalDescription, ",a),[3,6];case 6:return[3,8];case 7:return s=t.sent(),n.emitError(c.PeerErrorType.WebRTC,s),r.default.log("Failed to create answer, ",s),[3,8];case 8:return[2]}})})},o.prototype.handleSDP=function(e,o){return n(this,void 0,Promise,function(){var n,i,a,s;return t(this,function(t){switch(t.label){case 0:o=new RTCSessionDescription(o),n=this.connection.peerConnection,i=this.connection.provider,r.default.log("Setting remote description",o),a=this,t.label=1;case 1:return t.trys.push([1,5,,6]),[4,n.setRemoteDescription(o)];case 2:return t.sent(),r.default.log("Set remoteDescription:"+e+" for:"+this.connection.peer),"OFFER"!==e?[3,4]:[4,a._makeAnswer()];case 3:t.sent(),t.label=4;case 4:return[3,6];case 5:return s=t.sent(),i.emitError(c.PeerErrorType.WebRTC,s),r.default.log("Failed to setRemoteDescription, ",s),[3,6];case 6:return[2]}})})},o.prototype.handleCandidate=function(e){return n(this,void 0,Promise,function(){var n,o,i,a,s,d;return t(this,function(t){switch(t.label){case 0:r.default.log("handleCandidate:",e),n=e.candidate,o=e.sdpMLineIndex,i=e.sdpMid,a=this.connection.peerConnection,s=this.connection.provider,t.label=1;case 1:return t.trys.push([1,3,,4]),[4,a.addIceCandidate(new RTCIceCandidate({sdpMid:i,sdpMLineIndex:o,candidate:n}))];case 2:return t.sent(),r.default.log("Added ICE candidate for:"+this.connection.peer),[3,4];case 3:return d=t.sent(),s.emitError(c.PeerErrorType.WebRTC,d),r.default.log("Failed to handleCandidate, ",d),[3,4];case 4:return[2]}})})},o.prototype._addTracksToConnection=function(e,n){if(r.default.log("add tracks from stream "+e.id+" to peer connection"),!n.addTrack)return r.default.error("Your browser does't support RTCPeerConnection#addTrack. Ignored.");e.getTracks().forEach(function(t){n.addTrack(t,e)})},o.prototype._addStreamToMediaConnection=function(e,n){r.default.log("add stream "+e.id+" to media connection "+n.connectionId),n.addStream(e)},o}();exports.Negotiator=a;
-},{"./util":"BHXf","./logger":"WOs9","./enums":"ZRYf"}],"tQFK":[function(require,module,exports) {
-"use strict";var t=this&&this.__extends||function(){var t=function(e,n){return(t=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(t,e){t.__proto__=e}||function(t,e){for(var n in e)Object.prototype.hasOwnProperty.call(e,n)&&(t[n]=e[n])})(e,n)};return function(e,n){if("function"!=typeof n&&null!==n)throw new TypeError("Class extends value "+String(n)+" is not a constructor or null");function o(){this.constructor=e}t(e,n),e.prototype=null===n?Object.create(n):(o.prototype=n.prototype,new o)}}();Object.defineProperty(exports,"__esModule",{value:!0}),exports.BaseConnection=void 0;var e=require("eventemitter3"),n=function(e){function n(t,n,o){var r=e.call(this)||this;return r.peer=t,r.provider=n,r.options=o,r._open=!1,r.metadata=o.metadata,r}return t(n,e),Object.defineProperty(n.prototype,"open",{get:function(){return this._open},enumerable:!1,configurable:!0}),n}(e.EventEmitter);exports.BaseConnection=n;
-},{"eventemitter3":"JJlS"}],"dbHP":[function(require,module,exports) {
-"use strict";var e=this&&this.__extends||function(){var e=function(t,o){return(e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var o in t)Object.prototype.hasOwnProperty.call(t,o)&&(e[o]=t[o])})(t,o)};return function(t,o){if("function"!=typeof o&&null!==o)throw new TypeError("Class extends value "+String(o)+" is not a constructor or null");function r(){this.constructor=t}e(t,o),t.prototype=null===o?Object.create(o):(r.prototype=o.prototype,new r)}}(),t=this&&this.__assign||function(){return(t=Object.assign||function(e){for(var t,o=1,r=arguments.length;o<r;o++)for(var n in t=arguments[o])Object.prototype.hasOwnProperty.call(t,n)&&(e[n]=t[n]);return e}).apply(this,arguments)},o=this&&this.__values||function(e){var t="function"==typeof Symbol&&Symbol.iterator,o=t&&e[t],r=0;if(o)return o.call(e);if(e&&"number"==typeof e.length)return{next:function(){return e&&r>=e.length&&(e=void 0),{value:e&&e[r++],done:!e}}};throw new TypeError(t?"Object is not iterable.":"Symbol.iterator is not defined.")},r=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(exports,"__esModule",{value:!0}),exports.MediaConnection=void 0;var n=require("./util"),i=r(require("./logger")),a=require("./negotiator"),s=require("./enums"),l=require("./baseconnection"),c=function(r){function l(e,t,o){var i=r.call(this,e,t,o)||this;return i._localStream=i.options._stream,i.connectionId=i.options.connectionId||l.ID_PREFIX+n.util.randomToken(),i._negotiator=new a.Negotiator(i),i._localStream&&i._negotiator.startConnection({_stream:i._localStream,originator:!0}),i}return e(l,r),Object.defineProperty(l.prototype,"type",{get:function(){return s.ConnectionType.Media},enumerable:!1,configurable:!0}),Object.defineProperty(l.prototype,"localStream",{get:function(){return this._localStream},enumerable:!1,configurable:!0}),Object.defineProperty(l.prototype,"remoteStream",{get:function(){return this._remoteStream},enumerable:!1,configurable:!0}),l.prototype.addStream=function(e){i.default.log("Receiving stream",e),this._remoteStream=e,r.prototype.emit.call(this,s.ConnectionEventType.Stream,e)},l.prototype.handleMessage=function(e){var t=e.type,o=e.payload;switch(e.type){case s.ServerMessageType.Answer:this._negotiator.handleSDP(t,o.sdp),this._open=!0;break;case s.ServerMessageType.Candidate:this._negotiator.handleCandidate(o.candidate);break;default:i.default.warn("Unrecognized message type:"+t+" from peer:"+this.peer)}},l.prototype.answer=function(e,r){var n,a;if(void 0===r&&(r={}),this._localStream)i.default.warn("Local stream already exists on this MediaConnection. Are you answering a call twice?");else{this._localStream=e,r&&r.sdpTransform&&(this.options.sdpTransform=r.sdpTransform),this._negotiator.startConnection(t(t({},this.options._payload),{_stream:e}));var s=this.provider._getMessages(this.connectionId);try{for(var l=o(s),c=l.next();!c.done;c=l.next()){var p=c.value;this.handleMessage(p)}}catch(u){n={error:u}}finally{try{c&&!c.done&&(a=l.return)&&a.call(l)}finally{if(n)throw n.error}}this._open=!0}},l.prototype.close=function(){this._negotiator&&(this._negotiator.cleanup(),this._negotiator=null),this._localStream=null,this._remoteStream=null,this.provider&&(this.provider._removeConnection(this),this.provider=null),this.options&&this.options._stream&&(this.options._stream=null),this.open&&(this._open=!1,r.prototype.emit.call(this,s.ConnectionEventType.Close))},l.ID_PREFIX="mc_",l}(l.BaseConnection);exports.MediaConnection=c;
-},{"./util":"BHXf","./logger":"WOs9","./negotiator":"HCdX","./enums":"ZRYf","./baseconnection":"tQFK"}],"GGp6":[function(require,module,exports) {
-"use strict";var e=this&&this.__extends||function(){var e=function(t,r){return(e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var r in t)Object.prototype.hasOwnProperty.call(t,r)&&(e[r]=t[r])})(t,r)};return function(t,r){if("function"!=typeof r&&null!==r)throw new TypeError("Class extends value "+String(r)+" is not a constructor or null");function o(){this.constructor=t}e(t,r),t.prototype=null===r?Object.create(r):(o.prototype=r.prototype,new o)}}(),t=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(exports,"__esModule",{value:!0}),exports.EncodingQueue=void 0;var r=require("eventemitter3"),o=t(require("./logger")),n=function(t){function r(){var e=t.call(this)||this;return e.fileReader=new FileReader,e._queue=[],e._processing=!1,e.fileReader.onload=function(t){e._processing=!1,t.target&&e.emit("done",t.target.result),e.doNextTask()},e.fileReader.onerror=function(t){o.default.error("EncodingQueue error:",t),e._processing=!1,e.destroy(),e.emit("error",t)},e}return e(r,t),Object.defineProperty(r.prototype,"queue",{get:function(){return this._queue},enumerable:!1,configurable:!0}),Object.defineProperty(r.prototype,"size",{get:function(){return this.queue.length},enumerable:!1,configurable:!0}),Object.defineProperty(r.prototype,"processing",{get:function(){return this._processing},enumerable:!1,configurable:!0}),r.prototype.enque=function(e){this.queue.push(e),this.processing||this.doNextTask()},r.prototype.destroy=function(){this.fileReader.abort(),this._queue=[]},r.prototype.doNextTask=function(){0!==this.size&&(this.processing||(this._processing=!0,this.fileReader.readAsArrayBuffer(this.queue.shift())))},r}(r.EventEmitter);exports.EncodingQueue=n;
-},{"eventemitter3":"JJlS","./logger":"WOs9"}],"GBTQ":[function(require,module,exports) {
-"use strict";var e=this&&this.__extends||function(){var e=function(t,n){return(e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var n in t)Object.prototype.hasOwnProperty.call(t,n)&&(e[n]=t[n])})(t,n)};return function(t,n){if("function"!=typeof n&&null!==n)throw new TypeError("Class extends value "+String(n)+" is not a constructor or null");function i(){this.constructor=t}e(t,n),t.prototype=null===n?Object.create(n):(i.prototype=n.prototype,new i)}}(),t=this&&this.__values||function(e){var t="function"==typeof Symbol&&Symbol.iterator,n=t&&e[t],i=0;if(n)return n.call(e);if(e&&"number"==typeof e.length)return{next:function(){return e&&i>=e.length&&(e=void 0),{value:e&&e[i++],done:!e}}};throw new TypeError(t?"Object is not iterable.":"Symbol.iterator is not defined.")},n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(exports,"__esModule",{value:!0}),exports.DataConnection=void 0;var i=require("./util"),o=n(require("./logger")),r=require("./negotiator"),a=require("./enums"),s=require("./baseconnection"),u=require("./encodingQueue"),l=function(n){function s(e,t,l){var f=n.call(this,e,t,l)||this;return f.stringify=JSON.stringify,f.parse=JSON.parse,f._buffer=[],f._bufferSize=0,f._buffering=!1,f._chunkedData={},f._encodingQueue=new u.EncodingQueue,f.connectionId=f.options.connectionId||s.ID_PREFIX+i.util.randomToken(),f.label=f.options.label||f.connectionId,f.serialization=f.options.serialization||a.SerializationType.Binary,f.reliable=!!f.options.reliable,f._encodingQueue.on("done",function(e){f._bufferedSend(e)}),f._encodingQueue.on("error",function(){o.default.error("DC#"+f.connectionId+": Error occured in encoding from blob to arraybuffer, close DC"),f.close()}),f._negotiator=new r.Negotiator(f),f._negotiator.startConnection(f.options._payload||{originator:!0}),f}return e(s,n),Object.defineProperty(s.prototype,"type",{get:function(){return a.ConnectionType.Data},enumerable:!1,configurable:!0}),Object.defineProperty(s.prototype,"dataChannel",{get:function(){return this._dc},enumerable:!1,configurable:!0}),Object.defineProperty(s.prototype,"bufferSize",{get:function(){return this._bufferSize},enumerable:!1,configurable:!0}),s.prototype.initialize=function(e){this._dc=e,this._configureDataChannel()},s.prototype._configureDataChannel=function(){var e=this;i.util.supports.binaryBlob&&!i.util.supports.reliable||(this.dataChannel.binaryType="arraybuffer"),this.dataChannel.onopen=function(){o.default.log("DC#"+e.connectionId+" dc connection success"),e._open=!0,e.emit(a.ConnectionEventType.Open)},this.dataChannel.onmessage=function(t){o.default.log("DC#"+e.connectionId+" dc onmessage:",t.data),e._handleDataMessage(t)},this.dataChannel.onclose=function(){o.default.log("DC#"+e.connectionId+" dc closed for:",e.peer),e.close()}},s.prototype._handleDataMessage=function(e){var t=this,o=e.data,r=o.constructor,s=o;if(this.serialization===a.SerializationType.Binary||this.serialization===a.SerializationType.BinaryUTF8){if(r===Blob)return void i.util.blobToArrayBuffer(o,function(e){var n=i.util.unpack(e);t.emit(a.ConnectionEventType.Data,n)});if(r===ArrayBuffer)s=i.util.unpack(o);else if(r===String){var u=i.util.binaryStringToArrayBuffer(o);s=i.util.unpack(u)}}else this.serialization===a.SerializationType.JSON&&(s=this.parse(o));s.__peerData?this._handleChunk(s):n.prototype.emit.call(this,a.ConnectionEventType.Data,s)},s.prototype._handleChunk=function(e){var t=e.__peerData,n=this._chunkedData[t]||{data:[],count:0,total:e.total};if(n.data[e.n]=e.data,n.count++,this._chunkedData[t]=n,n.total===n.count){delete this._chunkedData[t];var i=new Blob(n.data);this._handleDataMessage({data:i})}},s.prototype.close=function(){this._buffer=[],this._bufferSize=0,this._chunkedData={},this._negotiator&&(this._negotiator.cleanup(),this._negotiator=null),this.provider&&(this.provider._removeConnection(this),this.provider=null),this.dataChannel&&(this.dataChannel.onopen=null,this.dataChannel.onmessage=null,this.dataChannel.onclose=null,this._dc=null),this._encodingQueue&&(this._encodingQueue.destroy(),this._encodingQueue.removeAllListeners(),this._encodingQueue=null),this.open&&(this._open=!1,n.prototype.emit.call(this,a.ConnectionEventType.Close))},s.prototype.send=function(e,t){if(this.open)if(this.serialization===a.SerializationType.JSON)this._bufferedSend(this.stringify(e));else if(this.serialization===a.SerializationType.Binary||this.serialization===a.SerializationType.BinaryUTF8){var o=i.util.pack(e);if(!t&&o.size>i.util.chunkedMTU)return void this._sendChunks(o);i.util.supports.binaryBlob?this._bufferedSend(o):this._encodingQueue.enque(o)}else this._bufferedSend(e);else n.prototype.emit.call(this,a.ConnectionEventType.Error,new Error("Connection is not open. You should listen for the `open` event before sending messages."))},s.prototype._bufferedSend=function(e){!this._buffering&&this._trySend(e)||(this._buffer.push(e),this._bufferSize=this._buffer.length)},s.prototype._trySend=function(e){var t=this;if(!this.open)return!1;if(this.dataChannel.bufferedAmount>s.MAX_BUFFERED_AMOUNT)return this._buffering=!0,setTimeout(function(){t._buffering=!1,t._tryBuffer()},50),!1;try{this.dataChannel.send(e)}catch(n){return o.default.error("DC#:"+this.connectionId+" Error when sending:",n),this._buffering=!0,this.close(),!1}return!0},s.prototype._tryBuffer=function(){if(this.open&&0!==this._buffer.length){var e=this._buffer[0];this._trySend(e)&&(this._buffer.shift(),this._bufferSize=this._buffer.length,this._tryBuffer())}},s.prototype._sendChunks=function(e){var n,r,a=i.util.chunk(e);o.default.log("DC#"+this.connectionId+" Try to send "+a.length+" chunks...");try{for(var s=t(a),u=s.next();!u.done;u=s.next()){var l=u.value;this.send(l,!0)}}catch(f){n={error:f}}finally{try{u&&!u.done&&(r=s.return)&&r.call(s)}finally{if(n)throw n.error}}},s.prototype.handleMessage=function(e){var t=e.payload;switch(e.type){case a.ServerMessageType.Answer:this._negotiator.handleSDP(e.type,t.sdp);break;case a.ServerMessageType.Candidate:this._negotiator.handleCandidate(t.candidate);break;default:o.default.warn("Unrecognized message type:",e.type,"from peer:",this.peer)}},s.ID_PREFIX="dc_",s.MAX_BUFFERED_AMOUNT=8388608,s}(s.BaseConnection);exports.DataConnection=l;
-},{"./util":"BHXf","./logger":"WOs9","./negotiator":"HCdX","./enums":"ZRYf","./baseconnection":"tQFK","./encodingQueue":"GGp6"}],"in7L":[function(require,module,exports) {
-"use strict";var t=this&&this.__awaiter||function(t,e,r,o){return new(r||(r=Promise))(function(n,s){function i(t){try{a(o.next(t))}catch(e){s(e)}}function u(t){try{a(o.throw(t))}catch(e){s(e)}}function a(t){var e;t.done?n(t.value):(e=t.value,e instanceof r?e:new r(function(t){t(e)})).then(i,u)}a((o=o.apply(t,e||[])).next())})},e=this&&this.__generator||function(t,e){var r,o,n,s,i={label:0,sent:function(){if(1&n[0])throw n[1];return n[1]},trys:[],ops:[]};return s={next:u(0),throw:u(1),return:u(2)},"function"==typeof Symbol&&(s[Symbol.iterator]=function(){return this}),s;function u(s){return function(u){return function(s){if(r)throw new TypeError("Generator is already executing.");for(;i;)try{if(r=1,o&&(n=2&s[0]?o.return:s[0]?o.throw||((n=o.return)&&n.call(o),0):o.next)&&!(n=n.call(o,s[1])).done)return n;switch(o=0,n&&(s=[2&s[0],n.value]),s[0]){case 0:case 1:n=s;break;case 4:return i.label++,{value:s[1],done:!1};case 5:i.label++,o=s[1],s=[0];continue;case 7:s=i.ops.pop(),i.trys.pop();continue;default:if(!(n=(n=i.trys).length>0&&n[n.length-1])&&(6===s[0]||2===s[0])){i=0;continue}if(3===s[0]&&(!n||s[1]>n[0]&&s[1]<n[3])){i.label=s[1];break}if(6===s[0]&&i.label<n[1]){i.label=n[1],n=s;break}if(n&&i.label<n[2]){i.label=n[2],i.ops.push(s);break}n[2]&&i.ops.pop(),i.trys.pop();continue}s=e.call(t,i)}catch(u){s=[6,u],o=0}finally{r=n=0}if(5&s[0])throw s[1];return{value:s[0]?s[1]:void 0,done:!0}}([s,u])}}},r=this&&this.__importDefault||function(t){return t&&t.__esModule?t:{default:t}};Object.defineProperty(exports,"__esModule",{value:!0}),exports.API=void 0;var o=require("./util"),n=r(require("./logger")),s=function(){function r(t){this._options=t}return r.prototype._buildUrl=function(t){var e=(this._options.secure?"https://":"http://")+this._options.host+":"+this._options.port+this._options.path+this._options.key+"/"+t;return e+="?ts="+(new Date).getTime()+Math.random()},r.prototype.retrieveId=function(){return t(this,void 0,Promise,function(){var t,r,s,i;return e(this,function(e){switch(e.label){case 0:t=this._buildUrl("id"),e.label=1;case 1:return e.trys.push([1,3,,4]),[4,fetch(t)];case 2:if(200!==(r=e.sent()).status)throw new Error("Error. Status:"+r.status);return[2,r.text()];case 3:throw s=e.sent(),n.default.error("Error retrieving ID",s),i="","/"===this._options.path&&this._options.host!==o.util.CLOUD_HOST&&(i=" If you passed in a `path` to your self-hosted PeerServer, you'll also need to pass in that same path when creating a new Peer."),new Error("Could not get an ID from the server."+i);case 4:return[2]}})})},r.prototype.listAllPeers=function(){return t(this,void 0,Promise,function(){var t,r,s,i;return e(this,function(e){switch(e.label){case 0:t=this._buildUrl("peers"),e.label=1;case 1:return e.trys.push([1,3,,4]),[4,fetch(t)];case 2:if(200!==(r=e.sent()).status){if(401===r.status)throw s="",s=this._options.host===o.util.CLOUD_HOST?"It looks like you're using the cloud server. You can email team@peerjs.com to enable peer listing for your API key.":"You need to enable `allow_discovery` on your self-hosted PeerServer to use this feature.",new Error("It doesn't look like you have permission to list peers IDs. "+s);throw new Error("Error. Status:"+r.status)}return[2,r.json()];case 3:throw i=e.sent(),n.default.error("Error retrieving list peers",i),new Error("Could not get list peers from the server."+i);case 4:return[2]}})})},r}();exports.API=s;
-},{"./util":"BHXf","./logger":"WOs9"}],"Hxpd":[function(require,module,exports) {
-"use strict";var e=this&&this.__extends||function(){var e=function(t,n){return(e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var n in t)Object.prototype.hasOwnProperty.call(t,n)&&(e[n]=t[n])})(t,n)};return function(t,n){if("function"!=typeof n&&null!==n)throw new TypeError("Class extends value "+String(n)+" is not a constructor or null");function r(){this.constructor=t}e(t,n),t.prototype=null===n?Object.create(n):(r.prototype=n.prototype,new r)}}(),t=this&&this.__assign||function(){return(t=Object.assign||function(e){for(var t,n=1,r=arguments.length;n<r;n++)for(var o in t=arguments[n])Object.prototype.hasOwnProperty.call(t,o)&&(e[o]=t[o]);return e}).apply(this,arguments)},n=this&&this.__values||function(e){var t="function"==typeof Symbol&&Symbol.iterator,n=t&&e[t],r=0;if(n)return n.call(e);if(e&&"number"==typeof e.length)return{next:function(){return e&&r>=e.length&&(e=void 0),{value:e&&e[r++],done:!e}}};throw new TypeError(t?"Object is not iterable.":"Symbol.iterator is not defined.")},r=this&&this.__read||function(e,t){var n="function"==typeof Symbol&&e[Symbol.iterator];if(!n)return e;var r,o,i=n.call(e),s=[];try{for(;(void 0===t||t-- >0)&&!(r=i.next()).done;)s.push(r.value)}catch(a){o={error:a}}finally{try{r&&!r.done&&(n=i.return)&&n.call(i)}finally{if(o)throw o.error}}return s},o=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(exports,"__esModule",{value:!0}),exports.Peer=void 0;var i=require("eventemitter3"),s=require("./util"),a=o(require("./logger")),c=require("./socket"),l=require("./mediaconnection"),u=require("./dataconnection"),d=require("./enums"),p=require("./api"),h=function(){return function(){}}(),f=function(o){function i(e,n){var r,c=o.call(this)||this;return c._id=null,c._lastServerId=null,c._destroyed=!1,c._disconnected=!1,c._open=!1,c._connections=new Map,c._lostMessages=new Map,e&&e.constructor==Object?n=e:e&&(r=e.toString()),n=t({debug:0,host:s.util.CLOUD_HOST,port:s.util.CLOUD_PORT,path:"/",key:i.DEFAULT_KEY,token:s.util.randomToken(),config:s.util.defaultConfig},n),c._options=n,"/"===c._options.host&&(c._options.host=window.location.hostname),c._options.path&&("/"!==c._options.path[0]&&(c._options.path="/"+c._options.path),"/"!==c._options.path[c._options.path.length-1]&&(c._options.path+="/")),void 0===c._options.secure&&c._options.host!==s.util.CLOUD_HOST?c._options.secure=s.util.isSecure():c._options.host==s.util.CLOUD_HOST&&(c._options.secure=!0),c._options.logFunction&&a.default.setLogFunction(c._options.logFunction),a.default.logLevel=c._options.debug||0,c._api=new p.API(n),c._socket=c._createServerConnection(),s.util.supports.audioVideo||s.util.supports.data?r&&!s.util.validateId(r)?(c._delayedAbort(d.PeerErrorType.InvalidID,'ID "'+r+'" is invalid'),c):(r?c._initialize(r):c._api.retrieveId().then(function(e){return c._initialize(e)}).catch(function(e){return c._abort(d.PeerErrorType.ServerError,e)}),c):(c._delayedAbort(d.PeerErrorType.BrowserIncompatible,"The current browser does not support WebRTC"),c)}return e(i,o),Object.defineProperty(i.prototype,"id",{get:function(){return this._id},enumerable:!1,configurable:!0}),Object.defineProperty(i.prototype,"options",{get:function(){return this._options},enumerable:!1,configurable:!0}),Object.defineProperty(i.prototype,"open",{get:function(){return this._open},enumerable:!1,configurable:!0}),Object.defineProperty(i.prototype,"socket",{get:function(){return this._socket},enumerable:!1,configurable:!0}),Object.defineProperty(i.prototype,"connections",{get:function(){var e,t,o=Object.create(null);try{for(var i=n(this._connections),s=i.next();!s.done;s=i.next()){var a=r(s.value,2),c=a[0],l=a[1];o[c]=l}}catch(u){e={error:u}}finally{try{s&&!s.done&&(t=i.return)&&t.call(i)}finally{if(e)throw e.error}}return o},enumerable:!1,configurable:!0}),Object.defineProperty(i.prototype,"destroyed",{get:function(){return this._destroyed},enumerable:!1,configurable:!0}),Object.defineProperty(i.prototype,"disconnected",{get:function(){return this._disconnected},enumerable:!1,configurable:!0}),i.prototype._createServerConnection=function(){var e=this,t=new c.Socket(this._options.secure,this._options.host,this._options.port,this._options.path,this._options.key,this._options.pingInterval);return t.on(d.SocketEventType.Message,function(t){e._handleMessage(t)}),t.on(d.SocketEventType.Error,function(t){e._abort(d.PeerErrorType.SocketError,t)}),t.on(d.SocketEventType.Disconnected,function(){e.disconnected||(e.emitError(d.PeerErrorType.Network,"Lost connection to server."),e.disconnect())}),t.on(d.SocketEventType.Close,function(){e.disconnected||e._abort(d.PeerErrorType.SocketClosed,"Underlying socket is already closed.")}),t},i.prototype._initialize=function(e){this._id=e,this.socket.start(e,this._options.token)},i.prototype._handleMessage=function(e){var t,r,o=e.type,i=e.payload,s=e.src;switch(o){case d.ServerMessageType.Open:this._lastServerId=this.id,this._open=!0,this.emit(d.PeerEventType.Open,this.id);break;case d.ServerMessageType.Error:this._abort(d.PeerErrorType.ServerError,i.msg);break;case d.ServerMessageType.IdTaken:this._abort(d.PeerErrorType.UnavailableID,'ID "'+this.id+'" is taken');break;case d.ServerMessageType.InvalidKey:this._abort(d.PeerErrorType.InvalidKey,'API KEY "'+this._options.key+'" is invalid');break;case d.ServerMessageType.Leave:a.default.log("Received leave message from "+s),this._cleanupPeer(s),this._connections.delete(s);break;case d.ServerMessageType.Expire:this.emitError(d.PeerErrorType.PeerUnavailable,"Could not connect to peer "+s);break;case d.ServerMessageType.Offer:var c=i.connectionId;if((_=this.getConnection(s,c))&&(_.close(),a.default.warn("Offer received for existing Connection ID:"+c)),i.type===d.ConnectionType.Media)_=new l.MediaConnection(s,this,{connectionId:c,_payload:i,metadata:i.metadata}),this._addConnection(s,_),this.emit(d.PeerEventType.Call,_);else{if(i.type!==d.ConnectionType.Data)return void a.default.warn("Received malformed connection type:"+i.type);_=new u.DataConnection(s,this,{connectionId:c,_payload:i,metadata:i.metadata,label:i.label,serialization:i.serialization,reliable:i.reliable}),this._addConnection(s,_),this.emit(d.PeerEventType.Connection,_)}var p=this._getMessages(c);try{for(var h=n(p),f=h.next();!f.done;f=h.next()){var y=f.value;_.handleMessage(y)}}catch(v){t={error:v}}finally{try{f&&!f.done&&(r=h.return)&&r.call(h)}finally{if(t)throw t.error}}break;default:if(!i)return void a.default.warn("You received a malformed message from "+s+" of type "+o);var _;c=i.connectionId;(_=this.getConnection(s,c))&&_.peerConnection?_.handleMessage(e):c?this._storeMessage(c,e):a.default.warn("You received an unrecognized message:",e)}},i.prototype._storeMessage=function(e,t){this._lostMessages.has(e)||this._lostMessages.set(e,[]),this._lostMessages.get(e).push(t)},i.prototype._getMessages=function(e){var t=this._lostMessages.get(e);return t?(this._lostMessages.delete(e),t):[]},i.prototype.connect=function(e,t){if(void 0===t&&(t={}),this.disconnected)return a.default.warn("You cannot connect to a new Peer because you called .disconnect() on this Peer and ended your connection with the server. You can create a new Peer to reconnect, or call reconnect on this peer if you believe its ID to still be available."),void this.emitError(d.PeerErrorType.Disconnected,"Cannot connect to new Peer after disconnecting from server.");var n=new u.DataConnection(e,this,t);return this._addConnection(e,n),n},i.prototype.call=function(e,t,n){if(void 0===n&&(n={}),this.disconnected)return a.default.warn("You cannot connect to a new Peer because you called .disconnect() on this Peer and ended your connection with the server. You can create a new Peer to reconnect."),void this.emitError(d.PeerErrorType.Disconnected,"Cannot connect to new Peer after disconnecting from server.");if(t){n._stream=t;var r=new l.MediaConnection(e,this,n);return this._addConnection(e,r),r}a.default.error("To call a peer, you must provide a stream from your browser's `getUserMedia`.")},i.prototype._addConnection=function(e,t){a.default.log("add connection "+t.type+":"+t.connectionId+" to peerId:"+e),this._connections.has(e)||this._connections.set(e,[]),this._connections.get(e).push(t)},i.prototype._removeConnection=function(e){var t=this._connections.get(e.peer);if(t){var n=t.indexOf(e);-1!==n&&t.splice(n,1)}this._lostMessages.delete(e.connectionId)},i.prototype.getConnection=function(e,t){var r,o,i=this._connections.get(e);if(!i)return null;try{for(var s=n(i),a=s.next();!a.done;a=s.next()){var c=a.value;if(c.connectionId===t)return c}}catch(l){r={error:l}}finally{try{a&&!a.done&&(o=s.return)&&o.call(s)}finally{if(r)throw r.error}}return null},i.prototype._delayedAbort=function(e,t){var n=this;setTimeout(function(){n._abort(e,t)},0)},i.prototype._abort=function(e,t){a.default.error("Aborting!"),this.emitError(e,t),this._lastServerId?this.disconnect():this.destroy()},i.prototype.emitError=function(e,t){var n;a.default.error("Error:",t),(n="string"==typeof t?new Error(t):t).type=e,this.emit(d.PeerEventType.Error,n)},i.prototype.destroy=function(){this.destroyed||(a.default.log("Destroy peer with ID:"+this.id),this.disconnect(),this._cleanup(),this._destroyed=!0,this.emit(d.PeerEventType.Close))},i.prototype._cleanup=function(){var e,t;try{for(var r=n(this._connections.keys()),o=r.next();!o.done;o=r.next()){var i=o.value;this._cleanupPeer(i),this._connections.delete(i)}}catch(s){e={error:s}}finally{try{o&&!o.done&&(t=r.return)&&t.call(r)}finally{if(e)throw e.error}}this.socket.removeAllListeners()},i.prototype._cleanupPeer=function(e){var t,r,o=this._connections.get(e);if(o)try{for(var i=n(o),s=i.next();!s.done;s=i.next()){s.value.close()}}catch(a){t={error:a}}finally{try{s&&!s.done&&(r=i.return)&&r.call(i)}finally{if(t)throw t.error}}},i.prototype.disconnect=function(){if(!this.disconnected){var e=this.id;a.default.log("Disconnect peer with ID:"+e),this._disconnected=!0,this._open=!1,this.socket.close(),this._lastServerId=e,this._id=null,this.emit(d.PeerEventType.Disconnected,e)}},i.prototype.reconnect=function(){if(this.disconnected&&!this.destroyed)a.default.log("Attempting reconnection to server with ID "+this._lastServerId),this._disconnected=!1,this._initialize(this._lastServerId);else{if(this.destroyed)throw new Error("This peer cannot reconnect to the server. It has already been destroyed.");if(this.disconnected||this.open)throw new Error("Peer "+this.id+" cannot reconnect because it is not disconnected from the server!");a.default.error("In a hurry? We're still trying to make the initial connection!")}},i.prototype.listAllPeers=function(e){var t=this;void 0===e&&(e=function(e){}),this._api.listAllPeers().then(function(t){return e(t)}).catch(function(e){return t._abort(d.PeerErrorType.ServerError,e)})},i.DEFAULT_KEY="peerjs",i}(i.EventEmitter);exports.Peer=f;
-},{"eventemitter3":"JJlS","./util":"BHXf","./logger":"WOs9","./socket":"wJlv","./mediaconnection":"dbHP","./dataconnection":"GBTQ","./enums":"ZRYf","./api":"in7L"}],"iTK6":[function(require,module,exports) {
-"use strict";Object.defineProperty(exports,"__esModule",{value:!0}),exports.peerjs=void 0;var e=require("./util"),r=require("./peer");exports.peerjs={Peer:r.Peer,util:e.util},exports.default=r.Peer,window.peerjs=exports.peerjs,window.Peer=r.Peer;
-},{"./util":"BHXf","./peer":"Hxpd"}]},{},["iTK6"], null)
-//# sourceMappingURL=/peerjs.min.js.map
\ No newline at end of file
+"use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+ if (k2 === undefined) k2 = k;
+ Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
+}) : (function(o, m, k, k2) {
+ if (k2 === undefined) k2 = k;
+ o[k2] = m[k];
+}));
+var __exportStar = (this && this.__exportStar) || function(m, exports) {
+ for (var p in m) if (p !== "default" && !Object.prototype.hasOwnProperty.call(exports, p)) __createBinding(exports, m, p);
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+__exportStar(require("./index"), exports);
diff --git a/node_modules/peerjs/dist/peerjs.min.js.map b/node_modules/peerjs/dist/peerjs.min.js.map
deleted file mode 100644
index 14c2560..0000000
--- a/node_modules/peerjs/dist/peerjs.min.js.map
+++ /dev/null
@@ -1 +0,0 @@
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binaryFeatures = {};\r\nbinaryFeatures.useBlobBuilder = (function () {\r\n try {\r\n new Blob([]);\r\n return false;\r\n } catch (e) {\r\n return true;\r\n }\r\n})();\r\n\r\nbinaryFeatures.useArrayBufferView = !binaryFeatures.useBlobBuilder && (function () {\r\n try {\r\n return (new Blob([new Uint8Array([])])).size === 0;\r\n } catch (e) {\r\n return true;\r\n }\r\n})();\r\n\r\nmodule.exports.binaryFeatures = binaryFeatures;\r\nvar BlobBuilder = module.exports.BlobBuilder;\r\nif (typeof window !== 'undefined') {\r\n BlobBuilder = module.exports.BlobBuilder = window.WebKitBlobBuilder ||\r\n window.MozBlobBuilder || window.MSBlobBuilder || window.BlobBuilder;\r\n}\r\n\r\nfunction BufferBuilder () {\r\n this._pieces = [];\r\n this._parts = [];\r\n}\r\n\r\nBufferBuilder.prototype.append = function (data) {\r\n if (typeof data === 'number') {\r\n this._pieces.push(data);\r\n } else {\r\n this.flush();\r\n this._parts.push(data);\r\n }\r\n};\r\n\r\nBufferBuilder.prototype.flush = function () {\r\n if (this._pieces.length > 0) {\r\n var buf = new Uint8Array(this._pieces);\r\n if (!binaryFeatures.useArrayBufferView) {\r\n buf = buf.buffer;\r\n }\r\n this._parts.push(buf);\r\n this._pieces = [];\r\n }\r\n};\r\n\r\nBufferBuilder.prototype.getBuffer = function () {\r\n this.flush();\r\n if (binaryFeatures.useBlobBuilder) {\r\n var builder = new BlobBuilder();\r\n for (var i = 0, ii = this._parts.length; i < ii; i++) {\r\n builder.append(this._parts[i]);\r\n }\r\n return builder.getBlob();\r\n } else {\r\n return new Blob(this._parts);\r\n }\r\n};\r\n\r\nmodule.exports.BufferBuilder = BufferBuilder;\r\n","var BufferBuilder = require('./bufferbuilder').BufferBuilder;\r\nvar binaryFeatures = require('./bufferbuilder').binaryFeatures;\r\n\r\nvar BinaryPack = {\r\n unpack: function (data) {\r\n var unpacker = new Unpacker(data);\r\n return unpacker.unpack();\r\n },\r\n pack: function (data) {\r\n var packer = new Packer();\r\n packer.pack(data);\r\n var buffer = packer.getBuffer();\r\n return buffer;\r\n }\r\n};\r\n\r\nmodule.exports = BinaryPack;\r\n\r\nfunction Unpacker (data) {\r\n // Data is ArrayBuffer\r\n this.index = 0;\r\n this.dataBuffer = data;\r\n this.dataView = new Uint8Array(this.dataBuffer);\r\n this.length = this.dataBuffer.byteLength;\r\n}\r\n\r\nUnpacker.prototype.unpack = function () {\r\n var type = this.unpack_uint8();\r\n if (type < 0x80) {\r\n return type;\r\n } else if ((type ^ 0xe0) < 0x20) {\r\n return (type ^ 0xe0) - 0x20;\r\n }\r\n\r\n var size;\r\n if ((size = type ^ 0xa0) <= 0x0f) {\r\n return this.unpack_raw(size);\r\n } else if ((size = type ^ 0xb0) <= 0x0f) {\r\n return this.unpack_string(size);\r\n } else if ((size = type ^ 0x90) <= 0x0f) {\r\n return this.unpack_array(size);\r\n } else if ((size = type ^ 0x80) <= 0x0f) {\r\n return this.unpack_map(size);\r\n }\r\n\r\n switch (type) {\r\n case 0xc0:\r\n return null;\r\n case 0xc1:\r\n return undefined;\r\n case 0xc2:\r\n return false;\r\n case 0xc3:\r\n return true;\r\n case 0xca:\r\n return this.unpack_float();\r\n case 0xcb:\r\n return this.unpack_double();\r\n case 0xcc:\r\n return this.unpack_uint8();\r\n case 0xcd:\r\n return this.unpack_uint16();\r\n case 0xce:\r\n return this.unpack_uint32();\r\n case 0xcf:\r\n return this.unpack_uint64();\r\n case 0xd0:\r\n return this.unpack_int8();\r\n case 0xd1:\r\n return this.unpack_int16();\r\n case 0xd2:\r\n return this.unpack_int32();\r\n case 0xd3:\r\n return this.unpack_int64();\r\n case 0xd4:\r\n return undefined;\r\n case 0xd5:\r\n return undefined;\r\n case 0xd6:\r\n return undefined;\r\n case 0xd7:\r\n return undefined;\r\n case 0xd8:\r\n size = this.unpack_uint16();\r\n return this.unpack_string(size);\r\n case 0xd9:\r\n size = this.unpack_uint32();\r\n return this.unpack_string(size);\r\n case 0xda:\r\n size = this.unpack_uint16();\r\n return this.unpack_raw(size);\r\n case 0xdb:\r\n size = this.unpack_uint32();\r\n return this.unpack_raw(size);\r\n case 0xdc:\r\n size = this.unpack_uint16();\r\n return this.unpack_array(size);\r\n case 0xdd:\r\n size = this.unpack_uint32();\r\n return this.unpack_array(size);\r\n case 0xde:\r\n size = this.unpack_uint16();\r\n return this.unpack_map(size);\r\n case 0xdf:\r\n size = this.unpack_uint32();\r\n return this.unpack_map(size);\r\n }\r\n};\r\n\r\nUnpacker.prototype.unpack_uint8 = function () {\r\n var byte = this.dataView[this.index] & 0xff;\r\n this.index++;\r\n return byte;\r\n};\r\n\r\nUnpacker.prototype.unpack_uint16 = function () {\r\n var bytes = this.read(2);\r\n var uint16 =\r\n ((bytes[0] & 0xff) * 256) + (bytes[1] & 0xff);\r\n this.index += 2;\r\n return uint16;\r\n};\r\n\r\nUnpacker.prototype.unpack_uint32 = function () {\r\n var bytes = this.read(4);\r\n var uint32 =\r\n ((bytes[0] * 256 +\r\n bytes[1]) * 256 +\r\n bytes[2]) * 256 +\r\n bytes[3];\r\n this.index += 4;\r\n return uint32;\r\n};\r\n\r\nUnpacker.prototype.unpack_uint64 = function () {\r\n var bytes = this.read(8);\r\n var uint64 =\r\n ((((((bytes[0] * 256 +\r\n bytes[1]) * 256 +\r\n bytes[2]) * 256 +\r\n bytes[3]) * 256 +\r\n bytes[4]) * 256 +\r\n bytes[5]) * 256 +\r\n bytes[6]) * 256 +\r\n bytes[7];\r\n this.index += 8;\r\n return uint64;\r\n};\r\n\r\nUnpacker.prototype.unpack_int8 = function () {\r\n var uint8 = this.unpack_uint8();\r\n return (uint8 < 0x80) ? uint8 : uint8 - (1 << 8);\r\n};\r\n\r\nUnpacker.prototype.unpack_int16 = function () {\r\n var uint16 = this.unpack_uint16();\r\n return (uint16 < 0x8000) ? uint16 : uint16 - (1 << 16);\r\n};\r\n\r\nUnpacker.prototype.unpack_int32 = function () {\r\n var uint32 = this.unpack_uint32();\r\n return (uint32 < Math.pow(2, 31)) ? uint32\r\n : uint32 - Math.pow(2, 32);\r\n};\r\n\r\nUnpacker.prototype.unpack_int64 = function () {\r\n var uint64 = this.unpack_uint64();\r\n return (uint64 < Math.pow(2, 63)) ? uint64\r\n : uint64 - Math.pow(2, 64);\r\n};\r\n\r\nUnpacker.prototype.unpack_raw = function (size) {\r\n if (this.length < this.index + size) {\r\n throw new Error('BinaryPackFailure: index is out of range' +\r\n ' ' + this.index + ' ' + size + ' ' + this.length);\r\n }\r\n var buf = this.dataBuffer.slice(this.index, this.index + size);\r\n this.index += size;\r\n\r\n // buf = util.bufferToString(buf);\r\n\r\n return buf;\r\n};\r\n\r\nUnpacker.prototype.unpack_string = function (size) {\r\n var bytes = this.read(size);\r\n var i = 0;\r\n var str = '';\r\n var c;\r\n var code;\r\n\r\n while (i < size) {\r\n c = bytes[i];\r\n if (c < 128) {\r\n str += String.fromCharCode(c);\r\n i++;\r\n } else if ((c ^ 0xc0) < 32) {\r\n code = ((c ^ 0xc0) << 6) | (bytes[i + 1] & 63);\r\n str += String.fromCharCode(code);\r\n i += 2;\r\n } else {\r\n code = ((c & 15) << 12) | ((bytes[i + 1] & 63) << 6) |\r\n (bytes[i + 2] & 63);\r\n str += String.fromCharCode(code);\r\n i += 3;\r\n }\r\n }\r\n\r\n this.index += size;\r\n return str;\r\n};\r\n\r\nUnpacker.prototype.unpack_array = function (size) {\r\n var objects = new Array(size);\r\n for (var i = 0; i < size; i++) {\r\n objects[i] = this.unpack();\r\n }\r\n return objects;\r\n};\r\n\r\nUnpacker.prototype.unpack_map = function (size) {\r\n var map = {};\r\n for (var i = 0; i < size; i++) {\r\n var key = this.unpack();\r\n var value = this.unpack();\r\n map[key] = value;\r\n }\r\n return map;\r\n};\r\n\r\nUnpacker.prototype.unpack_float = function () {\r\n var uint32 = this.unpack_uint32();\r\n var sign = uint32 >> 31;\r\n var exp = ((uint32 >> 23) & 0xff) - 127;\r\n var fraction = (uint32 & 0x7fffff) | 0x800000;\r\n return (sign === 0 ? 1 : -1) *\r\n fraction * Math.pow(2, exp - 23);\r\n};\r\n\r\nUnpacker.prototype.unpack_double = function () {\r\n var h32 = this.unpack_uint32();\r\n var l32 = this.unpack_uint32();\r\n var sign = h32 >> 31;\r\n var exp = ((h32 >> 20) & 0x7ff) - 1023;\r\n var hfrac = (h32 & 0xfffff) | 0x100000;\r\n var frac = hfrac * Math.pow(2, exp - 20) +\r\n l32 * Math.pow(2, exp - 52);\r\n return (sign === 0 ? 1 : -1) * frac;\r\n};\r\n\r\nUnpacker.prototype.read = function (length) {\r\n var j = this.index;\r\n if (j + length <= this.length) {\r\n return this.dataView.subarray(j, j + length);\r\n } else {\r\n throw new Error('BinaryPackFailure: read index out of range');\r\n }\r\n};\r\n\r\nfunction Packer () {\r\n this.bufferBuilder = new BufferBuilder();\r\n}\r\n\r\nPacker.prototype.getBuffer = function () {\r\n return this.bufferBuilder.getBuffer();\r\n};\r\n\r\nPacker.prototype.pack = function (value) {\r\n var type = typeof (value);\r\n if (type === 'string') {\r\n this.pack_string(value);\r\n } else if (type === 'number') {\r\n if (Math.floor(value) === value) {\r\n this.pack_integer(value);\r\n } else {\r\n this.pack_double(value);\r\n }\r\n } else if (type === 'boolean') {\r\n if (value === true) {\r\n this.bufferBuilder.append(0xc3);\r\n } else if (value === false) {\r\n this.bufferBuilder.append(0xc2);\r\n }\r\n } else if (type === 'undefined') {\r\n this.bufferBuilder.append(0xc0);\r\n } else if (type === 'object') {\r\n if (value === null) {\r\n this.bufferBuilder.append(0xc0);\r\n } else {\r\n var constructor = value.constructor;\r\n if (constructor == Array) {\r\n this.pack_array(value);\r\n } else if (constructor == Blob || constructor == File || value instanceof Blob || value instanceof File) {\r\n this.pack_bin(value);\r\n } else if (constructor == ArrayBuffer) {\r\n if (binaryFeatures.useArrayBufferView) {\r\n this.pack_bin(new Uint8Array(value));\r\n } else {\r\n this.pack_bin(value);\r\n }\r\n } else if ('BYTES_PER_ELEMENT' in value) {\r\n if (binaryFeatures.useArrayBufferView) {\r\n this.pack_bin(new Uint8Array(value.buffer));\r\n } else {\r\n this.pack_bin(value.buffer);\r\n }\r\n } else if ((constructor == Object) || (constructor.toString().startsWith('class'))) {\r\n this.pack_object(value);\r\n } else if (constructor == Date) {\r\n this.pack_string(value.toString());\r\n } else if (typeof value.toBinaryPack === 'function') {\r\n this.bufferBuilder.append(value.toBinaryPack());\r\n } else {\r\n throw new Error('Type \"' + constructor.toString() + '\" not yet supported');\r\n }\r\n }\r\n } else {\r\n throw new Error('Type \"' + type + '\" not yet supported');\r\n }\r\n this.bufferBuilder.flush();\r\n};\r\n\r\nPacker.prototype.pack_bin = function (blob) {\r\n var length = blob.length || blob.byteLength || blob.size;\r\n if (length <= 0x0f) {\r\n this.pack_uint8(0xa0 + length);\r\n } else if (length <= 0xffff) {\r\n this.bufferBuilder.append(0xda);\r\n this.pack_uint16(length);\r\n } else if (length <= 0xffffffff) {\r\n this.bufferBuilder.append(0xdb);\r\n this.pack_uint32(length);\r\n } else {\r\n throw new Error('Invalid length');\r\n }\r\n this.bufferBuilder.append(blob);\r\n};\r\n\r\nPacker.prototype.pack_string = function (str) {\r\n var length = utf8Length(str);\r\n\r\n if (length <= 0x0f) {\r\n this.pack_uint8(0xb0 + length);\r\n } else if (length <= 0xffff) {\r\n this.bufferBuilder.append(0xd8);\r\n this.pack_uint16(length);\r\n } else if (length <= 0xffffffff) {\r\n this.bufferBuilder.append(0xd9);\r\n this.pack_uint32(length);\r\n } else {\r\n throw new Error('Invalid length');\r\n }\r\n this.bufferBuilder.append(str);\r\n};\r\n\r\nPacker.prototype.pack_array = function (ary) {\r\n var length = ary.length;\r\n if (length <= 0x0f) {\r\n this.pack_uint8(0x90 + length);\r\n } else if (length <= 0xffff) {\r\n this.bufferBuilder.append(0xdc);\r\n this.pack_uint16(length);\r\n } else if (length <= 0xffffffff) {\r\n this.bufferBuilder.append(0xdd);\r\n this.pack_uint32(length);\r\n } else {\r\n throw new Error('Invalid length');\r\n }\r\n for (var i = 0; i < length; i++) {\r\n this.pack(ary[i]);\r\n }\r\n};\r\n\r\nPacker.prototype.pack_integer = function (num) {\r\n if (num >= -0x20 && num <= 0x7f) {\r\n this.bufferBuilder.append(num & 0xff);\r\n } else if (num >= 0x00 && num <= 0xff) {\r\n this.bufferBuilder.append(0xcc);\r\n this.pack_uint8(num);\r\n } else if (num >= -0x80 && num <= 0x7f) {\r\n this.bufferBuilder.append(0xd0);\r\n this.pack_int8(num);\r\n } else if (num >= 0x0000 && num <= 0xffff) {\r\n this.bufferBuilder.append(0xcd);\r\n this.pack_uint16(num);\r\n } else if (num >= -0x8000 && num <= 0x7fff) {\r\n this.bufferBuilder.append(0xd1);\r\n this.pack_int16(num);\r\n } else if (num >= 0x00000000 && num <= 0xffffffff) {\r\n this.bufferBuilder.append(0xce);\r\n this.pack_uint32(num);\r\n } else if (num >= -0x80000000 && num <= 0x7fffffff) {\r\n this.bufferBuilder.append(0xd2);\r\n this.pack_int32(num);\r\n } else if (num >= -0x8000000000000000 && num <= 0x7FFFFFFFFFFFFFFF) {\r\n this.bufferBuilder.append(0xd3);\r\n this.pack_int64(num);\r\n } else if (num >= 0x0000000000000000 && num <= 0xFFFFFFFFFFFFFFFF) {\r\n this.bufferBuilder.append(0xcf);\r\n this.pack_uint64(num);\r\n } else {\r\n throw new Error('Invalid integer');\r\n }\r\n};\r\n\r\nPacker.prototype.pack_double = function (num) {\r\n var sign = 0;\r\n if (num < 0) {\r\n sign = 1;\r\n num = -num;\r\n }\r\n var exp = Math.floor(Math.log(num) / Math.LN2);\r\n var frac0 = num / Math.pow(2, exp) - 1;\r\n var frac1 = Math.floor(frac0 * Math.pow(2, 52));\r\n var b32 = Math.pow(2, 32);\r\n var h32 = (sign << 31) | ((exp + 1023) << 20) |\r\n (frac1 / b32) & 0x0fffff;\r\n var l32 = frac1 % b32;\r\n this.bufferBuilder.append(0xcb);\r\n this.pack_int32(h32);\r\n this.pack_int32(l32);\r\n};\r\n\r\nPacker.prototype.pack_object = function (obj) {\r\n var keys = Object.keys(obj);\r\n var length = keys.length;\r\n if (length <= 0x0f) {\r\n this.pack_uint8(0x80 + length);\r\n } else if (length <= 0xffff) {\r\n this.bufferBuilder.append(0xde);\r\n this.pack_uint16(length);\r\n } else if (length <= 0xffffffff) {\r\n this.bufferBuilder.append(0xdf);\r\n this.pack_uint32(length);\r\n } else {\r\n throw new Error('Invalid length');\r\n }\r\n for (var prop in obj) {\r\n if (obj.hasOwnProperty(prop)) {\r\n this.pack(prop);\r\n this.pack(obj[prop]);\r\n }\r\n }\r\n};\r\n\r\nPacker.prototype.pack_uint8 = function (num) {\r\n this.bufferBuilder.append(num);\r\n};\r\n\r\nPacker.prototype.pack_uint16 = function (num) {\r\n this.bufferBuilder.append(num >> 8);\r\n this.bufferBuilder.append(num & 0xff);\r\n};\r\n\r\nPacker.prototype.pack_uint32 = function (num) {\r\n var n = num & 0xffffffff;\r\n this.bufferBuilder.append((n & 0xff000000) >>> 24);\r\n this.bufferBuilder.append((n & 0x00ff0000) >>> 16);\r\n this.bufferBuilder.append((n & 0x0000ff00) >>> 8);\r\n this.bufferBuilder.append((n & 0x000000ff));\r\n};\r\n\r\nPacker.prototype.pack_uint64 = function (num) {\r\n var high = num / Math.pow(2, 32);\r\n var low = num % Math.pow(2, 32);\r\n this.bufferBuilder.append((high & 0xff000000) >>> 24);\r\n this.bufferBuilder.append((high & 0x00ff0000) >>> 16);\r\n this.bufferBuilder.append((high & 0x0000ff00) >>> 8);\r\n this.bufferBuilder.append((high & 0x000000ff));\r\n this.bufferBuilder.append((low & 0xff000000) >>> 24);\r\n this.bufferBuilder.append((low & 0x00ff0000) >>> 16);\r\n this.bufferBuilder.append((low & 0x0000ff00) >>> 8);\r\n this.bufferBuilder.append((low & 0x000000ff));\r\n};\r\n\r\nPacker.prototype.pack_int8 = function (num) {\r\n this.bufferBuilder.append(num & 0xff);\r\n};\r\n\r\nPacker.prototype.pack_int16 = function (num) {\r\n this.bufferBuilder.append((num & 0xff00) >> 8);\r\n this.bufferBuilder.append(num & 0xff);\r\n};\r\n\r\nPacker.prototype.pack_int32 = function (num) {\r\n this.bufferBuilder.append((num >>> 24) & 0xff);\r\n this.bufferBuilder.append((num & 0x00ff0000) >>> 16);\r\n this.bufferBuilder.append((num & 0x0000ff00) >>> 8);\r\n this.bufferBuilder.append((num & 0x000000ff));\r\n};\r\n\r\nPacker.prototype.pack_int64 = function (num) {\r\n var high = Math.floor(num / Math.pow(2, 32));\r\n var low = num % Math.pow(2, 32);\r\n this.bufferBuilder.append((high & 0xff000000) >>> 24);\r\n this.bufferBuilder.append((high & 0x00ff0000) >>> 16);\r\n this.bufferBuilder.append((high & 0x0000ff00) >>> 8);\r\n this.bufferBuilder.append((high & 0x000000ff));\r\n this.bufferBuilder.append((low & 0xff000000) >>> 24);\r\n this.bufferBuilder.append((low & 0x00ff0000) >>> 16);\r\n this.bufferBuilder.append((low & 0x0000ff00) >>> 8);\r\n this.bufferBuilder.append((low & 0x000000ff));\r\n};\r\n\r\nfunction _utf8Replace (m) {\r\n var code = m.charCodeAt(0);\r\n\r\n if (code <= 0x7ff) return '00';\r\n if (code <= 0xffff) return '000';\r\n if (code <= 0x1fffff) return '0000';\r\n if (code <= 0x3ffffff) return '00000';\r\n return '000000';\r\n}\r\n\r\nfunction utf8Length (str) {\r\n if (str.length > 600) {\r\n // Blob method faster for large strings\r\n return (new Blob([str])).size;\r\n } else {\r\n return str.replace(/[^\\u0000-\\u007F]/g, _utf8Replace).length;\r\n }\r\n}\r\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n /* eslint-env node */\n'use strict';\n\nlet logDisabled_ = true;\nlet deprecationWarnings_ = true;\n\n/**\n * Extract browser version out of the provided user agent string.\n *\n * @param {!string} uastring userAgent string.\n * @param {!string} expr Regular expression used as match criteria.\n * @param {!number} pos position in the version string to be returned.\n * @return {!number} browser version.\n */\nexport function extractVersion(uastring, expr, pos) {\n const match = uastring.match(expr);\n return match && match.length >= pos && parseInt(match[pos], 10);\n}\n\n// Wraps the peerconnection event eventNameToWrap in a function\n// which returns the modified event object (or false to prevent\n// the event).\nexport function wrapPeerConnectionEvent(window, eventNameToWrap, wrapper) {\n if (!window.RTCPeerConnection) {\n return;\n }\n const proto = window.RTCPeerConnection.prototype;\n const nativeAddEventListener = proto.addEventListener;\n proto.addEventListener = function(nativeEventName, cb) {\n if (nativeEventName !== eventNameToWrap) {\n return nativeAddEventListener.apply(this, arguments);\n }\n const wrappedCallback = (e) => {\n const modifiedEvent = wrapper(e);\n if (modifiedEvent) {\n if (cb.handleEvent) {\n cb.handleEvent(modifiedEvent);\n } else {\n cb(modifiedEvent);\n }\n }\n };\n this._eventMap = this._eventMap || {};\n if (!this._eventMap[eventNameToWrap]) {\n this._eventMap[eventNameToWrap] = new Map();\n }\n this._eventMap[eventNameToWrap].set(cb, wrappedCallback);\n return nativeAddEventListener.apply(this, [nativeEventName,\n wrappedCallback]);\n };\n\n const nativeRemoveEventListener = proto.removeEventListener;\n proto.removeEventListener = function(nativeEventName, cb) {\n if (nativeEventName !== eventNameToWrap || !this._eventMap\n || !this._eventMap[eventNameToWrap]) {\n return nativeRemoveEventListener.apply(this, arguments);\n }\n if (!this._eventMap[eventNameToWrap].has(cb)) {\n return nativeRemoveEventListener.apply(this, arguments);\n }\n const unwrappedCb = this._eventMap[eventNameToWrap].get(cb);\n this._eventMap[eventNameToWrap].delete(cb);\n if (this._eventMap[eventNameToWrap].size === 0) {\n delete this._eventMap[eventNameToWrap];\n }\n if (Object.keys(this._eventMap).length === 0) {\n delete this._eventMap;\n }\n return nativeRemoveEventListener.apply(this, [nativeEventName,\n unwrappedCb]);\n };\n\n Object.defineProperty(proto, 'on' + eventNameToWrap, {\n get() {\n return this['_on' + eventNameToWrap];\n },\n set(cb) {\n if (this['_on' + eventNameToWrap]) {\n this.removeEventListener(eventNameToWrap,\n this['_on' + eventNameToWrap]);\n delete this['_on' + eventNameToWrap];\n }\n if (cb) {\n this.addEventListener(eventNameToWrap,\n this['_on' + eventNameToWrap] = cb);\n }\n },\n enumerable: true,\n configurable: true\n });\n}\n\nexport function disableLog(bool) {\n if (typeof bool !== 'boolean') {\n return new Error('Argument type: ' + typeof bool +\n '. Please use a boolean.');\n }\n logDisabled_ = bool;\n return (bool) ? 'adapter.js logging disabled' :\n 'adapter.js logging enabled';\n}\n\n/**\n * Disable or enable deprecation warnings\n * @param {!boolean} bool set to true to disable warnings.\n */\nexport function disableWarnings(bool) {\n if (typeof bool !== 'boolean') {\n return new Error('Argument type: ' + typeof bool +\n '. Please use a boolean.');\n }\n deprecationWarnings_ = !bool;\n return 'adapter.js deprecation warnings ' + (bool ? 'disabled' : 'enabled');\n}\n\nexport function log() {\n if (typeof window === 'object') {\n if (logDisabled_) {\n return;\n }\n if (typeof console !== 'undefined' && typeof console.log === 'function') {\n console.log.apply(console, arguments);\n }\n }\n}\n\n/**\n * Shows a deprecation warning suggesting the modern and spec-compatible API.\n */\nexport function deprecated(oldMethod, newMethod) {\n if (!deprecationWarnings_) {\n return;\n }\n console.warn(oldMethod + ' is deprecated, please use ' + newMethod +\n ' instead.');\n}\n\n/**\n * Browser detector.\n *\n * @return {object} result containing browser and version\n * properties.\n */\nexport function detectBrowser(window) {\n // Returned result object.\n const result = {browser: null, version: null};\n\n // Fail early if it's not a browser\n if (typeof window === 'undefined' || !window.navigator) {\n result.browser = 'Not a browser.';\n return result;\n }\n\n const {navigator} = window;\n\n if (navigator.mozGetUserMedia) { // Firefox.\n result.browser = 'firefox';\n result.version = extractVersion(navigator.userAgent,\n /Firefox\\/(\\d+)\\./, 1);\n } else if (navigator.webkitGetUserMedia ||\n (window.isSecureContext === false && window.webkitRTCPeerConnection &&\n !window.RTCIceGatherer)) {\n // Chrome, Chromium, Webview, Opera.\n // Version matches Chrome/WebRTC version.\n // Chrome 74 removed webkitGetUserMedia on http as well so we need the\n // more complicated fallback to webkitRTCPeerConnection.\n result.browser = 'chrome';\n result.version = extractVersion(navigator.userAgent,\n /Chrom(e|ium)\\/(\\d+)\\./, 2);\n } else if (navigator.mediaDevices &&\n navigator.userAgent.match(/Edge\\/(\\d+).(\\d+)$/)) { // Edge.\n result.browser = 'edge';\n result.version = extractVersion(navigator.userAgent,\n /Edge\\/(\\d+).(\\d+)$/, 2);\n } else if (window.RTCPeerConnection &&\n navigator.userAgent.match(/AppleWebKit\\/(\\d+)\\./)) { // Safari.\n result.browser = 'safari';\n result.version = extractVersion(navigator.userAgent,\n /AppleWebKit\\/(\\d+)\\./, 1);\n result.supportsUnifiedPlan = window.RTCRtpTransceiver &&\n 'currentDirection' in window.RTCRtpTransceiver.prototype;\n } else { // Default fallthrough: not supported.\n result.browser = 'Not a supported browser.';\n return result;\n }\n\n return result;\n}\n\n/**\n * Checks if something is an object.\n *\n * @param {*} val The something you want to check.\n * @return true if val is an object, false otherwise.\n */\nfunction isObject(val) {\n return Object.prototype.toString.call(val) === '[object Object]';\n}\n\n/**\n * Remove all empty objects and undefined values\n * from a nested object -- an enhanced and vanilla version\n * of Lodash's `compact`.\n */\nexport function compactObject(data) {\n if (!isObject(data)) {\n return data;\n }\n\n return Object.keys(data).reduce(function(accumulator, key) {\n const isObj = isObject(data[key]);\n const value = isObj ? compactObject(data[key]) : data[key];\n const isEmptyObject = isObj && !Object.keys(value).length;\n if (value === undefined || isEmptyObject) {\n return accumulator;\n }\n return Object.assign(accumulator, {[key]: value});\n }, {});\n}\n\n/* iterates the stats graph recursively. */\nexport function walkStats(stats, base, resultSet) {\n if (!base || resultSet.has(base.id)) {\n return;\n }\n resultSet.set(base.id, base);\n Object.keys(base).forEach(name => {\n if (name.endsWith('Id')) {\n walkStats(stats, stats.get(base[name]), resultSet);\n } else if (name.endsWith('Ids')) {\n base[name].forEach(id => {\n walkStats(stats, stats.get(id), resultSet);\n });\n }\n });\n}\n\n/* filter getStats for a sender/receiver track. */\nexport function filterStats(result, track, outbound) {\n const streamStatsType = outbound ? 'outbound-rtp' : 'inbound-rtp';\n const filteredResult = new Map();\n if (track === null) {\n return filteredResult;\n }\n const trackStats = [];\n result.forEach(value => {\n if (value.type === 'track' &&\n value.trackIdentifier === track.id) {\n trackStats.push(value);\n }\n });\n trackStats.forEach(trackStat => {\n result.forEach(stats => {\n if (stats.type === streamStatsType && stats.trackId === trackStat.id) {\n walkStats(result, stats, filteredResult);\n }\n });\n });\n return filteredResult;\n}\n\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\nimport * as utils from '../utils.js';\nconst logging = utils.log;\n\nexport function shimGetUserMedia(window, browserDetails) {\n const navigator = window && window.navigator;\n\n if (!navigator.mediaDevices) {\n return;\n }\n\n const constraintsToChrome_ = function(c) {\n if (typeof c !== 'object' || c.mandatory || c.optional) {\n return c;\n }\n const cc = {};\n Object.keys(c).forEach(key => {\n if (key === 'require' || key === 'advanced' || key === 'mediaSource') {\n return;\n }\n const r = (typeof c[key] === 'object') ? c[key] : {ideal: c[key]};\n if (r.exact !== undefined && typeof r.exact === 'number') {\n r.min = r.max = r.exact;\n }\n const oldname_ = function(prefix, name) {\n if (prefix) {\n return prefix + name.charAt(0).toUpperCase() + name.slice(1);\n }\n return (name === 'deviceId') ? 'sourceId' : name;\n };\n if (r.ideal !== undefined) {\n cc.optional = cc.optional || [];\n let oc = {};\n if (typeof r.ideal === 'number') {\n oc[oldname_('min', key)] = r.ideal;\n cc.optional.push(oc);\n oc = {};\n oc[oldname_('max', key)] = r.ideal;\n cc.optional.push(oc);\n } else {\n oc[oldname_('', key)] = r.ideal;\n cc.optional.push(oc);\n }\n }\n if (r.exact !== undefined && typeof r.exact !== 'number') {\n cc.mandatory = cc.mandatory || {};\n cc.mandatory[oldname_('', key)] = r.exact;\n } else {\n ['min', 'max'].forEach(mix => {\n if (r[mix] !== undefined) {\n cc.mandatory = cc.mandatory || {};\n cc.mandatory[oldname_(mix, key)] = r[mix];\n }\n });\n }\n });\n if (c.advanced) {\n cc.optional = (cc.optional || []).concat(c.advanced);\n }\n return cc;\n };\n\n const shimConstraints_ = function(constraints, func) {\n if (browserDetails.version >= 61) {\n return func(constraints);\n }\n constraints = JSON.parse(JSON.stringify(constraints));\n if (constraints && typeof constraints.audio === 'object') {\n const remap = function(obj, a, b) {\n if (a in obj && !(b in obj)) {\n obj[b] = obj[a];\n delete obj[a];\n }\n };\n constraints = JSON.parse(JSON.stringify(constraints));\n remap(constraints.audio, 'autoGainControl', 'googAutoGainControl');\n remap(constraints.audio, 'noiseSuppression', 'googNoiseSuppression');\n constraints.audio = constraintsToChrome_(constraints.audio);\n }\n if (constraints && typeof constraints.video === 'object') {\n // Shim facingMode for mobile & surface pro.\n let face = constraints.video.facingMode;\n face = face && ((typeof face === 'object') ? face : {ideal: face});\n const getSupportedFacingModeLies = browserDetails.version < 66;\n\n if ((face && (face.exact === 'user' || face.exact === 'environment' ||\n face.ideal === 'user' || face.ideal === 'environment')) &&\n !(navigator.mediaDevices.getSupportedConstraints &&\n navigator.mediaDevices.getSupportedConstraints().facingMode &&\n !getSupportedFacingModeLies)) {\n delete constraints.video.facingMode;\n let matches;\n if (face.exact === 'environment' || face.ideal === 'environment') {\n matches = ['back', 'rear'];\n } else if (face.exact === 'user' || face.ideal === 'user') {\n matches = ['front'];\n }\n if (matches) {\n // Look for matches in label, or use last cam for back (typical).\n return navigator.mediaDevices.enumerateDevices()\n .then(devices => {\n devices = devices.filter(d => d.kind === 'videoinput');\n let dev = devices.find(d => matches.some(match =>\n d.label.toLowerCase().includes(match)));\n if (!dev && devices.length && matches.includes('back')) {\n dev = devices[devices.length - 1]; // more likely the back cam\n }\n if (dev) {\n constraints.video.deviceId = face.exact ? {exact: dev.deviceId} :\n {ideal: dev.deviceId};\n }\n constraints.video = constraintsToChrome_(constraints.video);\n logging('chrome: ' + JSON.stringify(constraints));\n return func(constraints);\n });\n }\n }\n constraints.video = constraintsToChrome_(constraints.video);\n }\n logging('chrome: ' + JSON.stringify(constraints));\n return func(constraints);\n };\n\n const shimError_ = function(e) {\n if (browserDetails.version >= 64) {\n return e;\n }\n return {\n name: {\n PermissionDeniedError: 'NotAllowedError',\n PermissionDismissedError: 'NotAllowedError',\n InvalidStateError: 'NotAllowedError',\n DevicesNotFoundError: 'NotFoundError',\n ConstraintNotSatisfiedError: 'OverconstrainedError',\n TrackStartError: 'NotReadableError',\n MediaDeviceFailedDueToShutdown: 'NotAllowedError',\n MediaDeviceKillSwitchOn: 'NotAllowedError',\n TabCaptureError: 'AbortError',\n ScreenCaptureError: 'AbortError',\n DeviceCaptureError: 'AbortError'\n }[e.name] || e.name,\n message: e.message,\n constraint: e.constraint || e.constraintName,\n toString() {\n return this.name + (this.message && ': ') + this.message;\n }\n };\n };\n\n const getUserMedia_ = function(constraints, onSuccess, onError) {\n shimConstraints_(constraints, c => {\n navigator.webkitGetUserMedia(c, onSuccess, e => {\n if (onError) {\n onError(shimError_(e));\n }\n });\n });\n };\n navigator.getUserMedia = getUserMedia_.bind(navigator);\n\n // Even though Chrome 45 has navigator.mediaDevices and a getUserMedia\n // function which returns a Promise, it does not accept spec-style\n // constraints.\n if (navigator.mediaDevices.getUserMedia) {\n const origGetUserMedia = navigator.mediaDevices.getUserMedia.\n bind(navigator.mediaDevices);\n navigator.mediaDevices.getUserMedia = function(cs) {\n return shimConstraints_(cs, c => origGetUserMedia(c).then(stream => {\n if (c.audio && !stream.getAudioTracks().length ||\n c.video && !stream.getVideoTracks().length) {\n stream.getTracks().forEach(track => {\n track.stop();\n });\n throw new DOMException('', 'NotFoundError');\n }\n return stream;\n }, e => Promise.reject(shimError_(e))));\n };\n }\n}\n","/*\n * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\nexport function shimGetDisplayMedia(window, getSourceId) {\n if (window.navigator.mediaDevices &&\n 'getDisplayMedia' in window.navigator.mediaDevices) {\n return;\n }\n if (!(window.navigator.mediaDevices)) {\n return;\n }\n // getSourceId is a function that returns a promise resolving with\n // the sourceId of the screen/window/tab to be shared.\n if (typeof getSourceId !== 'function') {\n console.error('shimGetDisplayMedia: getSourceId argument is not ' +\n 'a function');\n return;\n }\n window.navigator.mediaDevices.getDisplayMedia =\n function getDisplayMedia(constraints) {\n return getSourceId(constraints)\n .then(sourceId => {\n const widthSpecified = constraints.video && constraints.video.width;\n const heightSpecified = constraints.video &&\n constraints.video.height;\n const frameRateSpecified = constraints.video &&\n constraints.video.frameRate;\n constraints.video = {\n mandatory: {\n chromeMediaSource: 'desktop',\n chromeMediaSourceId: sourceId,\n maxFrameRate: frameRateSpecified || 3\n }\n };\n if (widthSpecified) {\n constraints.video.mandatory.maxWidth = widthSpecified;\n }\n if (heightSpecified) {\n constraints.video.mandatory.maxHeight = heightSpecified;\n }\n return window.navigator.mediaDevices.getUserMedia(constraints);\n });\n };\n}\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n /* eslint-env node */\n'use strict';\nimport * as utils from '../utils.js';\n\nexport {shimGetUserMedia} from './getusermedia';\nexport {shimGetDisplayMedia} from './getdisplaymedia';\n\nexport function shimMediaStream(window) {\n window.MediaStream = window.MediaStream || window.webkitMediaStream;\n}\n\nexport function shimOnTrack(window) {\n if (typeof window === 'object' && window.RTCPeerConnection && !('ontrack' in\n window.RTCPeerConnection.prototype)) {\n Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', {\n get() {\n return this._ontrack;\n },\n set(f) {\n if (this._ontrack) {\n this.removeEventListener('track', this._ontrack);\n }\n this.addEventListener('track', this._ontrack = f);\n },\n enumerable: true,\n configurable: true\n });\n const origSetRemoteDescription =\n window.RTCPeerConnection.prototype.setRemoteDescription;\n window.RTCPeerConnection.prototype.setRemoteDescription =\n function setRemoteDescription() {\n if (!this._ontrackpoly) {\n this._ontrackpoly = (e) => {\n // onaddstream does not fire when a track is added to an existing\n // stream. But stream.onaddtrack is implemented so we use that.\n e.stream.addEventListener('addtrack', te => {\n let receiver;\n if (window.RTCPeerConnection.prototype.getReceivers) {\n receiver = this.getReceivers()\n .find(r => r.track && r.track.id === te.track.id);\n } else {\n receiver = {track: te.track};\n }\n\n const event = new Event('track');\n event.track = te.track;\n event.receiver = receiver;\n event.transceiver = {receiver};\n event.streams = [e.stream];\n this.dispatchEvent(event);\n });\n e.stream.getTracks().forEach(track => {\n let receiver;\n if (window.RTCPeerConnection.prototype.getReceivers) {\n receiver = this.getReceivers()\n .find(r => r.track && r.track.id === track.id);\n } else {\n receiver = {track};\n }\n const event = new Event('track');\n event.track = track;\n event.receiver = receiver;\n event.transceiver = {receiver};\n event.streams = [e.stream];\n this.dispatchEvent(event);\n });\n };\n this.addEventListener('addstream', this._ontrackpoly);\n }\n return origSetRemoteDescription.apply(this, arguments);\n };\n } else {\n // even if RTCRtpTransceiver is in window, it is only used and\n // emitted in unified-plan. Unfortunately this means we need\n // to unconditionally wrap the event.\n utils.wrapPeerConnectionEvent(window, 'track', e => {\n if (!e.transceiver) {\n Object.defineProperty(e, 'transceiver',\n {value: {receiver: e.receiver}});\n }\n return e;\n });\n }\n}\n\nexport function shimGetSendersWithDtmf(window) {\n // Overrides addTrack/removeTrack, depends on shimAddTrackRemoveTrack.\n if (typeof window === 'object' && window.RTCPeerConnection &&\n !('getSenders' in window.RTCPeerConnection.prototype) &&\n 'createDTMFSender' in window.RTCPeerConnection.prototype) {\n const shimSenderWithDtmf = function(pc, track) {\n return {\n track,\n get dtmf() {\n if (this._dtmf === undefined) {\n if (track.kind === 'audio') {\n this._dtmf = pc.createDTMFSender(track);\n } else {\n this._dtmf = null;\n }\n }\n return this._dtmf;\n },\n _pc: pc\n };\n };\n\n // augment addTrack when getSenders is not available.\n if (!window.RTCPeerConnection.prototype.getSenders) {\n window.RTCPeerConnection.prototype.getSenders = function getSenders() {\n this._senders = this._senders || [];\n return this._senders.slice(); // return a copy of the internal state.\n };\n const origAddTrack = window.RTCPeerConnection.prototype.addTrack;\n window.RTCPeerConnection.prototype.addTrack =\n function addTrack(track, stream) {\n let sender = origAddTrack.apply(this, arguments);\n if (!sender) {\n sender = shimSenderWithDtmf(this, track);\n this._senders.push(sender);\n }\n return sender;\n };\n\n const origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;\n window.RTCPeerConnection.prototype.removeTrack =\n function removeTrack(sender) {\n origRemoveTrack.apply(this, arguments);\n const idx = this._senders.indexOf(sender);\n if (idx !== -1) {\n this._senders.splice(idx, 1);\n }\n };\n }\n const origAddStream = window.RTCPeerConnection.prototype.addStream;\n window.RTCPeerConnection.prototype.addStream = function addStream(stream) {\n this._senders = this._senders || [];\n origAddStream.apply(this, [stream]);\n stream.getTracks().forEach(track => {\n this._senders.push(shimSenderWithDtmf(this, track));\n });\n };\n\n const origRemoveStream = window.RTCPeerConnection.prototype.removeStream;\n window.RTCPeerConnection.prototype.removeStream =\n function removeStream(stream) {\n this._senders = this._senders || [];\n origRemoveStream.apply(this, [stream]);\n\n stream.getTracks().forEach(track => {\n const sender = this._senders.find(s => s.track === track);\n if (sender) { // remove sender\n this._senders.splice(this._senders.indexOf(sender), 1);\n }\n });\n };\n } else if (typeof window === 'object' && window.RTCPeerConnection &&\n 'getSenders' in window.RTCPeerConnection.prototype &&\n 'createDTMFSender' in window.RTCPeerConnection.prototype &&\n window.RTCRtpSender &&\n !('dtmf' in window.RTCRtpSender.prototype)) {\n const origGetSenders = window.RTCPeerConnection.prototype.getSenders;\n window.RTCPeerConnection.prototype.getSenders = function getSenders() {\n const senders = origGetSenders.apply(this, []);\n senders.forEach(sender => sender._pc = this);\n return senders;\n };\n\n Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', {\n get() {\n if (this._dtmf === undefined) {\n if (this.track.kind === 'audio') {\n this._dtmf = this._pc.createDTMFSender(this.track);\n } else {\n this._dtmf = null;\n }\n }\n return this._dtmf;\n }\n });\n }\n}\n\nexport function shimGetStats(window) {\n if (!window.RTCPeerConnection) {\n return;\n }\n\n const origGetStats = window.RTCPeerConnection.prototype.getStats;\n window.RTCPeerConnection.prototype.getStats = function getStats() {\n const [selector, onSucc, onErr] = arguments;\n\n // If selector is a function then we are in the old style stats so just\n // pass back the original getStats format to avoid breaking old users.\n if (arguments.length > 0 && typeof selector === 'function') {\n return origGetStats.apply(this, arguments);\n }\n\n // When spec-style getStats is supported, return those when called with\n // either no arguments or the selector argument is null.\n if (origGetStats.length === 0 && (arguments.length === 0 ||\n typeof selector !== 'function')) {\n return origGetStats.apply(this, []);\n }\n\n const fixChromeStats_ = function(response) {\n const standardReport = {};\n const reports = response.result();\n reports.forEach(report => {\n const standardStats = {\n id: report.id,\n timestamp: report.timestamp,\n type: {\n localcandidate: 'local-candidate',\n remotecandidate: 'remote-candidate'\n }[report.type] || report.type\n };\n report.names().forEach(name => {\n standardStats[name] = report.stat(name);\n });\n standardReport[standardStats.id] = standardStats;\n });\n\n return standardReport;\n };\n\n // shim getStats with maplike support\n const makeMapStats = function(stats) {\n return new Map(Object.keys(stats).map(key => [key, stats[key]]));\n };\n\n if (arguments.length >= 2) {\n const successCallbackWrapper_ = function(response) {\n onSucc(makeMapStats(fixChromeStats_(response)));\n };\n\n return origGetStats.apply(this, [successCallbackWrapper_,\n selector]);\n }\n\n // promise-support\n return new Promise((resolve, reject) => {\n origGetStats.apply(this, [\n function(response) {\n resolve(makeMapStats(fixChromeStats_(response)));\n }, reject]);\n }).then(onSucc, onErr);\n };\n}\n\nexport function shimSenderReceiverGetStats(window) {\n if (!(typeof window === 'object' && window.RTCPeerConnection &&\n window.RTCRtpSender && window.RTCRtpReceiver)) {\n return;\n }\n\n // shim sender stats.\n if (!('getStats' in window.RTCRtpSender.prototype)) {\n const origGetSenders = window.RTCPeerConnection.prototype.getSenders;\n if (origGetSenders) {\n window.RTCPeerConnection.prototype.getSenders = function getSenders() {\n const senders = origGetSenders.apply(this, []);\n senders.forEach(sender => sender._pc = this);\n return senders;\n };\n }\n\n const origAddTrack = window.RTCPeerConnection.prototype.addTrack;\n if (origAddTrack) {\n window.RTCPeerConnection.prototype.addTrack = function addTrack() {\n const sender = origAddTrack.apply(this, arguments);\n sender._pc = this;\n return sender;\n };\n }\n window.RTCRtpSender.prototype.getStats = function getStats() {\n const sender = this;\n return this._pc.getStats().then(result =>\n /* Note: this will include stats of all senders that\n * send a track with the same id as sender.track as\n * it is not possible to identify the RTCRtpSender.\n */\n utils.filterStats(result, sender.track, true));\n };\n }\n\n // shim receiver stats.\n if (!('getStats' in window.RTCRtpReceiver.prototype)) {\n const origGetReceivers = window.RTCPeerConnection.prototype.getReceivers;\n if (origGetReceivers) {\n window.RTCPeerConnection.prototype.getReceivers =\n function getReceivers() {\n const receivers = origGetReceivers.apply(this, []);\n receivers.forEach(receiver => receiver._pc = this);\n return receivers;\n };\n }\n utils.wrapPeerConnectionEvent(window, 'track', e => {\n e.receiver._pc = e.srcElement;\n return e;\n });\n window.RTCRtpReceiver.prototype.getStats = function getStats() {\n const receiver = this;\n return this._pc.getStats().then(result =>\n utils.filterStats(result, receiver.track, false));\n };\n }\n\n if (!('getStats' in window.RTCRtpSender.prototype &&\n 'getStats' in window.RTCRtpReceiver.prototype)) {\n return;\n }\n\n // shim RTCPeerConnection.getStats(track).\n const origGetStats = window.RTCPeerConnection.prototype.getStats;\n window.RTCPeerConnection.prototype.getStats = function getStats() {\n if (arguments.length > 0 &&\n arguments[0] instanceof window.MediaStreamTrack) {\n const track = arguments[0];\n let sender;\n let receiver;\n let err;\n this.getSenders().forEach(s => {\n if (s.track === track) {\n if (sender) {\n err = true;\n } else {\n sender = s;\n }\n }\n });\n this.getReceivers().forEach(r => {\n if (r.track === track) {\n if (receiver) {\n err = true;\n } else {\n receiver = r;\n }\n }\n return r.track === track;\n });\n if (err || (sender && receiver)) {\n return Promise.reject(new DOMException(\n 'There are more than one sender or receiver for the track.',\n 'InvalidAccessError'));\n } else if (sender) {\n return sender.getStats();\n } else if (receiver) {\n return receiver.getStats();\n }\n return Promise.reject(new DOMException(\n 'There is no sender or receiver for the track.',\n 'InvalidAccessError'));\n }\n return origGetStats.apply(this, arguments);\n };\n}\n\nexport function shimAddTrackRemoveTrackWithNative(window) {\n // shim addTrack/removeTrack with native variants in order to make\n // the interactions with legacy getLocalStreams behave as in other browsers.\n // Keeps a mapping stream.id => [stream, rtpsenders...]\n window.RTCPeerConnection.prototype.getLocalStreams =\n function getLocalStreams() {\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n return Object.keys(this._shimmedLocalStreams)\n .map(streamId => this._shimmedLocalStreams[streamId][0]);\n };\n\n const origAddTrack = window.RTCPeerConnection.prototype.addTrack;\n window.RTCPeerConnection.prototype.addTrack =\n function addTrack(track, stream) {\n if (!stream) {\n return origAddTrack.apply(this, arguments);\n }\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n\n const sender = origAddTrack.apply(this, arguments);\n if (!this._shimmedLocalStreams[stream.id]) {\n this._shimmedLocalStreams[stream.id] = [stream, sender];\n } else if (this._shimmedLocalStreams[stream.id].indexOf(sender) === -1) {\n this._shimmedLocalStreams[stream.id].push(sender);\n }\n return sender;\n };\n\n const origAddStream = window.RTCPeerConnection.prototype.addStream;\n window.RTCPeerConnection.prototype.addStream = function addStream(stream) {\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n\n stream.getTracks().forEach(track => {\n const alreadyExists = this.getSenders().find(s => s.track === track);\n if (alreadyExists) {\n throw new DOMException('Track already exists.',\n 'InvalidAccessError');\n }\n });\n const existingSenders = this.getSenders();\n origAddStream.apply(this, arguments);\n const newSenders = this.getSenders()\n .filter(newSender => existingSenders.indexOf(newSender) === -1);\n this._shimmedLocalStreams[stream.id] = [stream].concat(newSenders);\n };\n\n const origRemoveStream = window.RTCPeerConnection.prototype.removeStream;\n window.RTCPeerConnection.prototype.removeStream =\n function removeStream(stream) {\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n delete this._shimmedLocalStreams[stream.id];\n return origRemoveStream.apply(this, arguments);\n };\n\n const origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack;\n window.RTCPeerConnection.prototype.removeTrack =\n function removeTrack(sender) {\n this._shimmedLocalStreams = this._shimmedLocalStreams || {};\n if (sender) {\n Object.keys(this._shimmedLocalStreams).forEach(streamId => {\n const idx = this._shimmedLocalStreams[streamId].indexOf(sender);\n if (idx !== -1) {\n this._shimmedLocalStreams[streamId].splice(idx, 1);\n }\n if (this._shimmedLocalStreams[streamId].length === 1) {\n delete this._shimmedLocalStreams[streamId];\n }\n });\n }\n return origRemoveTrack.apply(this, arguments);\n };\n}\n\nexport function shimAddTrackRemoveTrack(window, browserDetails) {\n if (!window.RTCPeerConnection) {\n return;\n }\n // shim addTrack and removeTrack.\n if (window.RTCPeerConnection.prototype.addTrack &&\n browserDetails.version >= 65) {\n return shimAddTrackRemoveTrackWithNative(window);\n }\n\n // also shim pc.getLocalStreams when addTrack is shimmed\n // to return the original streams.\n const origGetLocalStreams = window.RTCPeerConnection.prototype\n .getLocalStreams;\n window.RTCPeerConnection.prototype.getLocalStreams =\n function getLocalStreams() {\n const nativeStreams = origGetLocalStreams.apply(this);\n this._reverseStreams = this._reverseStreams || {};\n return nativeStreams.map(stream => this._reverseStreams[stream.id]);\n };\n\n const origAddStream = window.RTCPeerConnection.prototype.addStream;\n window.RTCPeerConnection.prototype.addStream = function addStream(stream) {\n this._streams = this._streams || {};\n this._reverseStreams = this._reverseStreams || {};\n\n stream.getTracks().forEach(track => {\n const alreadyExists = this.getSenders().find(s => s.track === track);\n if (alreadyExists) {\n throw new DOMException('Track already exists.',\n 'InvalidAccessError');\n }\n });\n // Add identity mapping for consistency with addTrack.\n // Unless this is being used with a stream from addTrack.\n if (!this._reverseStreams[stream.id]) {\n const newStream = new window.MediaStream(stream.getTracks());\n this._streams[stream.id] = newStream;\n this._reverseStreams[newStream.id] = stream;\n stream = newStream;\n }\n origAddStream.apply(this, [stream]);\n };\n\n const origRemoveStream = window.RTCPeerConnection.prototype.removeStream;\n window.RTCPeerConnection.prototype.removeStream =\n function removeStream(stream) {\n this._streams = this._streams || {};\n this._reverseStreams = this._reverseStreams || {};\n\n origRemoveStream.apply(this, [(this._streams[stream.id] || stream)]);\n delete this._reverseStreams[(this._streams[stream.id] ?\n this._streams[stream.id].id : stream.id)];\n delete this._streams[stream.id];\n };\n\n window.RTCPeerConnection.prototype.addTrack =\n function addTrack(track, stream) {\n if (this.signalingState === 'closed') {\n throw new DOMException(\n 'The RTCPeerConnection\\'s signalingState is \\'closed\\'.',\n 'InvalidStateError');\n }\n const streams = [].slice.call(arguments, 1);\n if (streams.length !== 1 ||\n !streams[0].getTracks().find(t => t === track)) {\n // this is not fully correct but all we can manage without\n // [[associated MediaStreams]] internal slot.\n throw new DOMException(\n 'The adapter.js addTrack polyfill only supports a single ' +\n ' stream which is associated with the specified track.',\n 'NotSupportedError');\n }\n\n const alreadyExists = this.getSenders().find(s => s.track === track);\n if (alreadyExists) {\n throw new DOMException('Track already exists.',\n 'InvalidAccessError');\n }\n\n this._streams = this._streams || {};\n this._reverseStreams = this._reverseStreams || {};\n const oldStream = this._streams[stream.id];\n if (oldStream) {\n // this is using odd Chrome behaviour, use with caution:\n // https://bugs.chromium.org/p/webrtc/issues/detail?id=7815\n // Note: we rely on the high-level addTrack/dtmf shim to\n // create the sender with a dtmf sender.\n oldStream.addTrack(track);\n\n // Trigger ONN async.\n Promise.resolve().then(() => {\n this.dispatchEvent(new Event('negotiationneeded'));\n });\n } else {\n const newStream = new window.MediaStream([track]);\n this._streams[stream.id] = newStream;\n this._reverseStreams[newStream.id] = stream;\n this.addStream(newStream);\n }\n return this.getSenders().find(s => s.track === track);\n };\n\n // replace the internal stream id with the external one and\n // vice versa.\n function replaceInternalStreamId(pc, description) {\n let sdp = description.sdp;\n Object.keys(pc._reverseStreams || []).forEach(internalId => {\n const externalStream = pc._reverseStreams[internalId];\n const internalStream = pc._streams[externalStream.id];\n sdp = sdp.replace(new RegExp(internalStream.id, 'g'),\n externalStream.id);\n });\n return new RTCSessionDescription({\n type: description.type,\n sdp\n });\n }\n function replaceExternalStreamId(pc, description) {\n let sdp = description.sdp;\n Object.keys(pc._reverseStreams || []).forEach(internalId => {\n const externalStream = pc._reverseStreams[internalId];\n const internalStream = pc._streams[externalStream.id];\n sdp = sdp.replace(new RegExp(externalStream.id, 'g'),\n internalStream.id);\n });\n return new RTCSessionDescription({\n type: description.type,\n sdp\n });\n }\n ['createOffer', 'createAnswer'].forEach(function(method) {\n const nativeMethod = window.RTCPeerConnection.prototype[method];\n const methodObj = {[method]() {\n const args = arguments;\n const isLegacyCall = arguments.length &&\n typeof arguments[0] === 'function';\n if (isLegacyCall) {\n return nativeMethod.apply(this, [\n (description) => {\n const desc = replaceInternalStreamId(this, description);\n args[0].apply(null, [desc]);\n },\n (err) => {\n if (args[1]) {\n args[1].apply(null, err);\n }\n }, arguments[2]\n ]);\n }\n return nativeMethod.apply(this, arguments)\n .then(description => replaceInternalStreamId(this, description));\n }};\n window.RTCPeerConnection.prototype[method] = methodObj[method];\n });\n\n const origSetLocalDescription =\n window.RTCPeerConnection.prototype.setLocalDescription;\n window.RTCPeerConnection.prototype.setLocalDescription =\n function setLocalDescription() {\n if (!arguments.length || !arguments[0].type) {\n return origSetLocalDescription.apply(this, arguments);\n }\n arguments[0] = replaceExternalStreamId(this, arguments[0]);\n return origSetLocalDescription.apply(this, arguments);\n };\n\n // TODO: mangle getStats: https://w3c.github.io/webrtc-stats/#dom-rtcmediastreamstats-streamidentifier\n\n const origLocalDescription = Object.getOwnPropertyDescriptor(\n window.RTCPeerConnection.prototype, 'localDescription');\n Object.defineProperty(window.RTCPeerConnection.prototype,\n 'localDescription', {\n get() {\n const description = origLocalDescription.get.apply(this);\n if (description.type === '') {\n return description;\n }\n return replaceInternalStreamId(this, description);\n }\n });\n\n window.RTCPeerConnection.prototype.removeTrack =\n function removeTrack(sender) {\n if (this.signalingState === 'closed') {\n throw new DOMException(\n 'The RTCPeerConnection\\'s signalingState is \\'closed\\'.',\n 'InvalidStateError');\n }\n // We can not yet check for sender instanceof RTCRtpSender\n // since we shim RTPSender. So we check if sender._pc is set.\n if (!sender._pc) {\n throw new DOMException('Argument 1 of RTCPeerConnection.removeTrack ' +\n 'does not implement interface RTCRtpSender.', 'TypeError');\n }\n const isLocal = sender._pc === this;\n if (!isLocal) {\n throw new DOMException('Sender was not created by this connection.',\n 'InvalidAccessError');\n }\n\n // Search for the native stream the senders track belongs to.\n this._streams = this._streams || {};\n let stream;\n Object.keys(this._streams).forEach(streamid => {\n const hasTrack = this._streams[streamid].getTracks()\n .find(track => sender.track === track);\n if (hasTrack) {\n stream = this._streams[streamid];\n }\n });\n\n if (stream) {\n if (stream.getTracks().length === 1) {\n // if this is the last track of the stream, remove the stream. This\n // takes care of any shimmed _senders.\n this.removeStream(this._reverseStreams[stream.id]);\n } else {\n // relying on the same odd chrome behaviour as above.\n stream.removeTrack(sender.track);\n }\n this.dispatchEvent(new Event('negotiationneeded'));\n }\n };\n}\n\nexport function shimPeerConnection(window, browserDetails) {\n if (!window.RTCPeerConnection && window.webkitRTCPeerConnection) {\n // very basic support for old versions.\n window.RTCPeerConnection = window.webkitRTCPeerConnection;\n }\n if (!window.RTCPeerConnection) {\n return;\n }\n\n // shim implicit creation of RTCSessionDescription/RTCIceCandidate\n if (browserDetails.version < 53) {\n ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate']\n .forEach(function(method) {\n const nativeMethod = window.RTCPeerConnection.prototype[method];\n const methodObj = {[method]() {\n arguments[0] = new ((method === 'addIceCandidate') ?\n window.RTCIceCandidate :\n window.RTCSessionDescription)(arguments[0]);\n return nativeMethod.apply(this, arguments);\n }};\n window.RTCPeerConnection.prototype[method] = methodObj[method];\n });\n }\n}\n\n// Attempt to fix ONN in plan-b mode.\nexport function fixNegotiationNeeded(window, browserDetails) {\n utils.wrapPeerConnectionEvent(window, 'negotiationneeded', e => {\n const pc = e.target;\n if (browserDetails.version < 72 || (pc.getConfiguration &&\n pc.getConfiguration().sdpSemantics === 'plan-b')) {\n if (pc.signalingState !== 'stable') {\n return;\n }\n }\n return e;\n });\n}\n","/*\n * Copyright (c) 2018 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nimport * as utils from '../utils';\n// Edge does not like\n// 1) stun: filtered after 14393 unless ?transport=udp is present\n// 2) turn: that does not have all of turn:host:port?transport=udp\n// 3) turn: with ipv6 addresses\n// 4) turn: occurring muliple times\nexport function filterIceServers(iceServers, edgeVersion) {\n let hasTurn = false;\n iceServers = JSON.parse(JSON.stringify(iceServers));\n return iceServers.filter(server => {\n if (server && (server.urls || server.url)) {\n let urls = server.urls || server.url;\n if (server.url && !server.urls) {\n utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls');\n }\n const isString = typeof urls === 'string';\n if (isString) {\n urls = [urls];\n }\n urls = urls.filter(url => {\n // filter STUN unconditionally.\n if (url.indexOf('stun:') === 0) {\n return false;\n }\n\n const validTurn = url.startsWith('turn') &&\n !url.startsWith('turn:[') &&\n url.includes('transport=udp');\n if (validTurn && !hasTurn) {\n hasTurn = true;\n return true;\n }\n return validTurn && !hasTurn;\n });\n\n delete server.url;\n server.urls = isString ? urls[0] : urls;\n return !!urls.length;\n }\n });\n}\n","/* eslint-env node */\n'use strict';\n\n// SDP helpers.\nvar SDPUtils = {};\n\n// Generate an alphanumeric identifier for cname or mids.\n// TODO: use UUIDs instead? https://gist.github.com/jed/982883\nSDPUtils.generateIdentifier = function() {\n return Math.random().toString(36).substr(2, 10);\n};\n\n// The RTCP CNAME used by all peerconnections from the same JS.\nSDPUtils.localCName = SDPUtils.generateIdentifier();\n\n// Splits SDP into lines, dealing with both CRLF and LF.\nSDPUtils.splitLines = function(blob) {\n return blob.trim().split('\\n').map(function(line) {\n return line.trim();\n });\n};\n// Splits SDP into sessionpart and mediasections. Ensures CRLF.\nSDPUtils.splitSections = function(blob) {\n var parts = blob.split('\\nm=');\n return parts.map(function(part, index) {\n return (index > 0 ? 'm=' + part : part).trim() + '\\r\\n';\n });\n};\n\n// returns the session description.\nSDPUtils.getDescription = function(blob) {\n var sections = SDPUtils.splitSections(blob);\n return sections && sections[0];\n};\n\n// returns the individual media sections.\nSDPUtils.getMediaSections = function(blob) {\n var sections = SDPUtils.splitSections(blob);\n sections.shift();\n return sections;\n};\n\n// Returns lines that start with a certain prefix.\nSDPUtils.matchPrefix = function(blob, prefix) {\n return SDPUtils.splitLines(blob).filter(function(line) {\n return line.indexOf(prefix) === 0;\n });\n};\n\n// Parses an ICE candidate line. Sample input:\n// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8\n// rport 55996\"\nSDPUtils.parseCandidate = function(line) {\n var parts;\n // Parse both variants.\n if (line.indexOf('a=candidate:') === 0) {\n parts = line.substring(12).split(' ');\n } else {\n parts = line.substring(10).split(' ');\n }\n\n var candidate = {\n foundation: parts[0],\n component: parseInt(parts[1], 10),\n protocol: parts[2].toLowerCase(),\n priority: parseInt(parts[3], 10),\n ip: parts[4],\n address: parts[4], // address is an alias for ip.\n port: parseInt(parts[5], 10),\n // skip parts[6] == 'typ'\n type: parts[7]\n };\n\n for (var i = 8; i < parts.length; i += 2) {\n switch (parts[i]) {\n case 'raddr':\n candidate.relatedAddress = parts[i + 1];\n break;\n case 'rport':\n candidate.relatedPort = parseInt(parts[i + 1], 10);\n break;\n case 'tcptype':\n candidate.tcpType = parts[i + 1];\n break;\n case 'ufrag':\n candidate.ufrag = parts[i + 1]; // for backward compability.\n candidate.usernameFragment = parts[i + 1];\n break;\n default: // extension handling, in particular ufrag\n candidate[parts[i]] = parts[i + 1];\n break;\n }\n }\n return candidate;\n};\n\n// Translates a candidate object into SDP candidate attribute.\nSDPUtils.writeCandidate = function(candidate) {\n var sdp = [];\n sdp.push(candidate.foundation);\n sdp.push(candidate.component);\n sdp.push(candidate.protocol.toUpperCase());\n sdp.push(candidate.priority);\n sdp.push(candidate.address || candidate.ip);\n sdp.push(candidate.port);\n\n var type = candidate.type;\n sdp.push('typ');\n sdp.push(type);\n if (type !== 'host' && candidate.relatedAddress &&\n candidate.relatedPort) {\n sdp.push('raddr');\n sdp.push(candidate.relatedAddress);\n sdp.push('rport');\n sdp.push(candidate.relatedPort);\n }\n if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {\n sdp.push('tcptype');\n sdp.push(candidate.tcpType);\n }\n if (candidate.usernameFragment || candidate.ufrag) {\n sdp.push('ufrag');\n sdp.push(candidate.usernameFragment || candidate.ufrag);\n }\n return 'candidate:' + sdp.join(' ');\n};\n\n// Parses an ice-options line, returns an array of option tags.\n// a=ice-options:foo bar\nSDPUtils.parseIceOptions = function(line) {\n return line.substr(14).split(' ');\n};\n\n// Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input:\n// a=rtpmap:111 opus/48000/2\nSDPUtils.parseRtpMap = function(line) {\n var parts = line.substr(9).split(' ');\n var parsed = {\n payloadType: parseInt(parts.shift(), 10) // was: id\n };\n\n parts = parts[0].split('/');\n\n parsed.name = parts[0];\n parsed.clockRate = parseInt(parts[1], 10); // was: clockrate\n parsed.channels = parts.length === 3 ? parseInt(parts[2], 10) : 1;\n // legacy alias, got renamed back to channels in ORTC.\n parsed.numChannels = parsed.channels;\n return parsed;\n};\n\n// Generate an a=rtpmap line from RTCRtpCodecCapability or\n// RTCRtpCodecParameters.\nSDPUtils.writeRtpMap = function(codec) {\n var pt = codec.payloadType;\n if (codec.preferredPayloadType !== undefined) {\n pt = codec.preferredPayloadType;\n }\n var channels = codec.channels || codec.numChannels || 1;\n return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +\n (channels !== 1 ? '/' + channels : '') + '\\r\\n';\n};\n\n// Parses an a=extmap line (headerextension from RFC 5285). Sample input:\n// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\n// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset\nSDPUtils.parseExtmap = function(line) {\n var parts = line.substr(9).split(' ');\n return {\n id: parseInt(parts[0], 10),\n direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv',\n uri: parts[1]\n };\n};\n\n// Generates a=extmap line from RTCRtpHeaderExtensionParameters or\n// RTCRtpHeaderExtension.\nSDPUtils.writeExtmap = function(headerExtension) {\n return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +\n (headerExtension.direction && headerExtension.direction !== 'sendrecv'\n ? '/' + headerExtension.direction\n : '') +\n ' ' + headerExtension.uri + '\\r\\n';\n};\n\n// Parses an ftmp line, returns dictionary. Sample input:\n// a=fmtp:96 vbr=on;cng=on\n// Also deals with vbr=on; cng=on\nSDPUtils.parseFmtp = function(line) {\n var parsed = {};\n var kv;\n var parts = line.substr(line.indexOf(' ') + 1).split(';');\n for (var j = 0; j < parts.length; j++) {\n kv = parts[j].trim().split('=');\n parsed[kv[0].trim()] = kv[1];\n }\n return parsed;\n};\n\n// Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeFmtp = function(codec) {\n var line = '';\n var pt = codec.payloadType;\n if (codec.preferredPayloadType !== undefined) {\n pt = codec.preferredPayloadType;\n }\n if (codec.parameters && Object.keys(codec.parameters).length) {\n var params = [];\n Object.keys(codec.parameters).forEach(function(param) {\n if (codec.parameters[param]) {\n params.push(param + '=' + codec.parameters[param]);\n } else {\n params.push(param);\n }\n });\n line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\\r\\n';\n }\n return line;\n};\n\n// Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:\n// a=rtcp-fb:98 nack rpsi\nSDPUtils.parseRtcpFb = function(line) {\n var parts = line.substr(line.indexOf(' ') + 1).split(' ');\n return {\n type: parts.shift(),\n parameter: parts.join(' ')\n };\n};\n// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeRtcpFb = function(codec) {\n var lines = '';\n var pt = codec.payloadType;\n if (codec.preferredPayloadType !== undefined) {\n pt = codec.preferredPayloadType;\n }\n if (codec.rtcpFeedback && codec.rtcpFeedback.length) {\n // FIXME: special handling for trr-int?\n codec.rtcpFeedback.forEach(function(fb) {\n lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +\n (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +\n '\\r\\n';\n });\n }\n return lines;\n};\n\n// Parses an RFC 5576 ssrc media attribute. Sample input:\n// a=ssrc:3735928559 cname:something\nSDPUtils.parseSsrcMedia = function(line) {\n var sp = line.indexOf(' ');\n var parts = {\n ssrc: parseInt(line.substr(7, sp - 7), 10)\n };\n var colon = line.indexOf(':', sp);\n if (colon > -1) {\n parts.attribute = line.substr(sp + 1, colon - sp - 1);\n parts.value = line.substr(colon + 1);\n } else {\n parts.attribute = line.substr(sp + 1);\n }\n return parts;\n};\n\nSDPUtils.parseSsrcGroup = function(line) {\n var parts = line.substr(13).split(' ');\n return {\n semantics: parts.shift(),\n ssrcs: parts.map(function(ssrc) {\n return parseInt(ssrc, 10);\n })\n };\n};\n\n// Extracts the MID (RFC 5888) from a media section.\n// returns the MID or undefined if no mid line was found.\nSDPUtils.getMid = function(mediaSection) {\n var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0];\n if (mid) {\n return mid.substr(6);\n }\n};\n\nSDPUtils.parseFingerprint = function(line) {\n var parts = line.substr(14).split(' ');\n return {\n algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge.\n value: parts[1]\n };\n};\n\n// Extracts DTLS parameters from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n// get the fingerprint line as input. See also getIceParameters.\nSDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {\n var lines = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=fingerprint:');\n // Note: a=setup line is ignored since we use the 'auto' role.\n // Note2: 'algorithm' is not case sensitive except in Edge.\n return {\n role: 'auto',\n fingerprints: lines.map(SDPUtils.parseFingerprint)\n };\n};\n\n// Serializes DTLS parameters to SDP.\nSDPUtils.writeDtlsParameters = function(params, setupType) {\n var sdp = 'a=setup:' + setupType + '\\r\\n';\n params.fingerprints.forEach(function(fp) {\n sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\\r\\n';\n });\n return sdp;\n};\n\n// Parses a=crypto lines into\n// https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#dictionary-rtcsrtpsdesparameters-members\nSDPUtils.parseCryptoLine = function(line) {\n var parts = line.substr(9).split(' ');\n return {\n tag: parseInt(parts[0], 10),\n cryptoSuite: parts[1],\n keyParams: parts[2],\n sessionParams: parts.slice(3),\n };\n};\n\nSDPUtils.writeCryptoLine = function(parameters) {\n return 'a=crypto:' + parameters.tag + ' ' +\n parameters.cryptoSuite + ' ' +\n (typeof parameters.keyParams === 'object'\n ? SDPUtils.writeCryptoKeyParams(parameters.keyParams)\n : parameters.keyParams) +\n (parameters.sessionParams ? ' ' + parameters.sessionParams.join(' ') : '') +\n '\\r\\n';\n};\n\n// Parses the crypto key parameters into\n// https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#rtcsrtpkeyparam*\nSDPUtils.parseCryptoKeyParams = function(keyParams) {\n if (keyParams.indexOf('inline:') !== 0) {\n return null;\n }\n var parts = keyParams.substr(7).split('|');\n return {\n keyMethod: 'inline',\n keySalt: parts[0],\n lifeTime: parts[1],\n mkiValue: parts[2] ? parts[2].split(':')[0] : undefined,\n mkiLength: parts[2] ? parts[2].split(':')[1] : undefined,\n };\n};\n\nSDPUtils.writeCryptoKeyParams = function(keyParams) {\n return keyParams.keyMethod + ':'\n + keyParams.keySalt +\n (keyParams.lifeTime ? '|' + keyParams.lifeTime : '') +\n (keyParams.mkiValue && keyParams.mkiLength\n ? '|' + keyParams.mkiValue + ':' + keyParams.mkiLength\n : '');\n};\n\n// Extracts all SDES paramters.\nSDPUtils.getCryptoParameters = function(mediaSection, sessionpart) {\n var lines = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=crypto:');\n return lines.map(SDPUtils.parseCryptoLine);\n};\n\n// Parses ICE information from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n// get the ice-ufrag and ice-pwd lines as input.\nSDPUtils.getIceParameters = function(mediaSection, sessionpart) {\n var ufrag = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=ice-ufrag:')[0];\n var pwd = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=ice-pwd:')[0];\n if (!(ufrag && pwd)) {\n return null;\n }\n return {\n usernameFragment: ufrag.substr(12),\n password: pwd.substr(10),\n };\n};\n\n// Serializes ICE parameters to SDP.\nSDPUtils.writeIceParameters = function(params) {\n return 'a=ice-ufrag:' + params.usernameFragment + '\\r\\n' +\n 'a=ice-pwd:' + params.password + '\\r\\n';\n};\n\n// Parses the SDP media section and returns RTCRtpParameters.\nSDPUtils.parseRtpParameters = function(mediaSection) {\n var description = {\n codecs: [],\n headerExtensions: [],\n fecMechanisms: [],\n rtcp: []\n };\n var lines = SDPUtils.splitLines(mediaSection);\n var mline = lines[0].split(' ');\n for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..]\n var pt = mline[i];\n var rtpmapline = SDPUtils.matchPrefix(\n mediaSection, 'a=rtpmap:' + pt + ' ')[0];\n if (rtpmapline) {\n var codec = SDPUtils.parseRtpMap(rtpmapline);\n var fmtps = SDPUtils.matchPrefix(\n mediaSection, 'a=fmtp:' + pt + ' ');\n // Only the first a=fmtp:<pt> is considered.\n codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};\n codec.rtcpFeedback = SDPUtils.matchPrefix(\n mediaSection, 'a=rtcp-fb:' + pt + ' ')\n .map(SDPUtils.parseRtcpFb);\n description.codecs.push(codec);\n // parse FEC mechanisms from rtpmap lines.\n switch (codec.name.toUpperCase()) {\n case 'RED':\n case 'ULPFEC':\n description.fecMechanisms.push(codec.name.toUpperCase());\n break;\n default: // only RED and ULPFEC are recognized as FEC mechanisms.\n break;\n }\n }\n }\n SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) {\n description.headerExtensions.push(SDPUtils.parseExtmap(line));\n });\n // FIXME: parse rtcp.\n return description;\n};\n\n// Generates parts of the SDP media section describing the capabilities /\n// parameters.\nSDPUtils.writeRtpDescription = function(kind, caps) {\n var sdp = '';\n\n // Build the mline.\n sdp += 'm=' + kind + ' ';\n sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.\n sdp += ' UDP/TLS/RTP/SAVPF ';\n sdp += caps.codecs.map(function(codec) {\n if (codec.preferredPayloadType !== undefined) {\n return codec.preferredPayloadType;\n }\n return codec.payloadType;\n }).join(' ') + '\\r\\n';\n\n sdp += 'c=IN IP4 0.0.0.0\\r\\n';\n sdp += 'a=rtcp:9 IN IP4 0.0.0.0\\r\\n';\n\n // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.\n caps.codecs.forEach(function(codec) {\n sdp += SDPUtils.writeRtpMap(codec);\n sdp += SDPUtils.writeFmtp(codec);\n sdp += SDPUtils.writeRtcpFb(codec);\n });\n var maxptime = 0;\n caps.codecs.forEach(function(codec) {\n if (codec.maxptime > maxptime) {\n maxptime = codec.maxptime;\n }\n });\n if (maxptime > 0) {\n sdp += 'a=maxptime:' + maxptime + '\\r\\n';\n }\n sdp += 'a=rtcp-mux\\r\\n';\n\n if (caps.headerExtensions) {\n caps.headerExtensions.forEach(function(extension) {\n sdp += SDPUtils.writeExtmap(extension);\n });\n }\n // FIXME: write fecMechanisms.\n return sdp;\n};\n\n// Parses the SDP media section and returns an array of\n// RTCRtpEncodingParameters.\nSDPUtils.parseRtpEncodingParameters = function(mediaSection) {\n var encodingParameters = [];\n var description = SDPUtils.parseRtpParameters(mediaSection);\n var hasRed = description.fecMechanisms.indexOf('RED') !== -1;\n var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;\n\n // filter a=ssrc:... cname:, ignore PlanB-msid\n var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n .map(function(line) {\n return SDPUtils.parseSsrcMedia(line);\n })\n .filter(function(parts) {\n return parts.attribute === 'cname';\n });\n var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;\n var secondarySsrc;\n\n var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')\n .map(function(line) {\n var parts = line.substr(17).split(' ');\n return parts.map(function(part) {\n return parseInt(part, 10);\n });\n });\n if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {\n secondarySsrc = flows[0][1];\n }\n\n description.codecs.forEach(function(codec) {\n if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {\n var encParam = {\n ssrc: primarySsrc,\n codecPayloadType: parseInt(codec.parameters.apt, 10)\n };\n if (primarySsrc && secondarySsrc) {\n encParam.rtx = {ssrc: secondarySsrc};\n }\n encodingParameters.push(encParam);\n if (hasRed) {\n encParam = JSON.parse(JSON.stringify(encParam));\n encParam.fec = {\n ssrc: primarySsrc,\n mechanism: hasUlpfec ? 'red+ulpfec' : 'red'\n };\n encodingParameters.push(encParam);\n }\n }\n });\n if (encodingParameters.length === 0 && primarySsrc) {\n encodingParameters.push({\n ssrc: primarySsrc\n });\n }\n\n // we support both b=AS and b=TIAS but interpret AS as TIAS.\n var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');\n if (bandwidth.length) {\n if (bandwidth[0].indexOf('b=TIAS:') === 0) {\n bandwidth = parseInt(bandwidth[0].substr(7), 10);\n } else if (bandwidth[0].indexOf('b=AS:') === 0) {\n // use formula from JSEP to convert b=AS to TIAS value.\n bandwidth = parseInt(bandwidth[0].substr(5), 10) * 1000 * 0.95\n - (50 * 40 * 8);\n } else {\n bandwidth = undefined;\n }\n encodingParameters.forEach(function(params) {\n params.maxBitrate = bandwidth;\n });\n }\n return encodingParameters;\n};\n\n// parses http://draft.ortc.org/#rtcrtcpparameters*\nSDPUtils.parseRtcpParameters = function(mediaSection) {\n var rtcpParameters = {};\n\n // Gets the first SSRC. Note tha with RTX there might be multiple\n // SSRCs.\n var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n .map(function(line) {\n return SDPUtils.parseSsrcMedia(line);\n })\n .filter(function(obj) {\n return obj.attribute === 'cname';\n })[0];\n if (remoteSsrc) {\n rtcpParameters.cname = remoteSsrc.value;\n rtcpParameters.ssrc = remoteSsrc.ssrc;\n }\n\n // Edge uses the compound attribute instead of reducedSize\n // compound is !reducedSize\n var rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize');\n rtcpParameters.reducedSize = rsize.length > 0;\n rtcpParameters.compound = rsize.length === 0;\n\n // parses the rtcp-mux attrіbute.\n // Note that Edge does not support unmuxed RTCP.\n var mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux');\n rtcpParameters.mux = mux.length > 0;\n\n return rtcpParameters;\n};\n\n// parses either a=msid: or a=ssrc:... msid lines and returns\n// the id of the MediaStream and MediaStreamTrack.\nSDPUtils.parseMsid = function(mediaSection) {\n var parts;\n var spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:');\n if (spec.length === 1) {\n parts = spec[0].substr(7).split(' ');\n return {stream: parts[0], track: parts[1]};\n }\n var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n .map(function(line) {\n return SDPUtils.parseSsrcMedia(line);\n })\n .filter(function(msidParts) {\n return msidParts.attribute === 'msid';\n });\n if (planB.length > 0) {\n parts = planB[0].value.split(' ');\n return {stream: parts[0], track: parts[1]};\n }\n};\n\n// SCTP\n// parses draft-ietf-mmusic-sctp-sdp-26 first and falls back\n// to draft-ietf-mmusic-sctp-sdp-05\nSDPUtils.parseSctpDescription = function(mediaSection) {\n var mline = SDPUtils.parseMLine(mediaSection);\n var maxSizeLine = SDPUtils.matchPrefix(mediaSection, 'a=max-message-size:');\n var maxMessageSize;\n if (maxSizeLine.length > 0) {\n maxMessageSize = parseInt(maxSizeLine[0].substr(19), 10);\n }\n if (isNaN(maxMessageSize)) {\n maxMessageSize = 65536;\n }\n var sctpPort = SDPUtils.matchPrefix(mediaSection, 'a=sctp-port:');\n if (sctpPort.length > 0) {\n return {\n port: parseInt(sctpPort[0].substr(12), 10),\n protocol: mline.fmt,\n maxMessageSize: maxMessageSize\n };\n }\n var sctpMapLines = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:');\n if (sctpMapLines.length > 0) {\n var parts = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:')[0]\n .substr(10)\n .split(' ');\n return {\n port: parseInt(parts[0], 10),\n protocol: parts[1],\n maxMessageSize: maxMessageSize\n };\n }\n};\n\n// SCTP\n// outputs the draft-ietf-mmusic-sctp-sdp-26 version that all browsers\n// support by now receiving in this format, unless we originally parsed\n// as the draft-ietf-mmusic-sctp-sdp-05 format (indicated by the m-line\n// protocol of DTLS/SCTP -- without UDP/ or TCP/)\nSDPUtils.writeSctpDescription = function(media, sctp) {\n var output = [];\n if (media.protocol !== 'DTLS/SCTP') {\n output = [\n 'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.protocol + '\\r\\n',\n 'c=IN IP4 0.0.0.0\\r\\n',\n 'a=sctp-port:' + sctp.port + '\\r\\n'\n ];\n } else {\n output = [\n 'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.port + '\\r\\n',\n 'c=IN IP4 0.0.0.0\\r\\n',\n 'a=sctpmap:' + sctp.port + ' ' + sctp.protocol + ' 65535\\r\\n'\n ];\n }\n if (sctp.maxMessageSize !== undefined) {\n output.push('a=max-message-size:' + sctp.maxMessageSize + '\\r\\n');\n }\n return output.join('');\n};\n\n// Generate a session ID for SDP.\n// https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1\n// recommends using a cryptographically random +ve 64-bit value\n// but right now this should be acceptable and within the right range\nSDPUtils.generateSessionId = function() {\n return Math.random().toString().substr(2, 21);\n};\n\n// Write boilder plate for start of SDP\n// sessId argument is optional - if not supplied it will\n// be generated randomly\n// sessVersion is optional and defaults to 2\n// sessUser is optional and defaults to 'thisisadapterortc'\nSDPUtils.writeSessionBoilerplate = function(sessId, sessVer, sessUser) {\n var sessionId;\n var version = sessVer !== undefined ? sessVer : 2;\n if (sessId) {\n sessionId = sessId;\n } else {\n sessionId = SDPUtils.generateSessionId();\n }\n var user = sessUser || 'thisisadapterortc';\n // FIXME: sess-id should be an NTP timestamp.\n return 'v=0\\r\\n' +\n 'o=' + user + ' ' + sessionId + ' ' + version +\n ' IN IP4 127.0.0.1\\r\\n' +\n 's=-\\r\\n' +\n 't=0 0\\r\\n';\n};\n\nSDPUtils.writeMediaSection = function(transceiver, caps, type, stream) {\n var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);\n\n // Map ICE parameters (ufrag, pwd) to SDP.\n sdp += SDPUtils.writeIceParameters(\n transceiver.iceGatherer.getLocalParameters());\n\n // Map DTLS parameters to SDP.\n sdp += SDPUtils.writeDtlsParameters(\n transceiver.dtlsTransport.getLocalParameters(),\n type === 'offer' ? 'actpass' : 'active');\n\n sdp += 'a=mid:' + transceiver.mid + '\\r\\n';\n\n if (transceiver.direction) {\n sdp += 'a=' + transceiver.direction + '\\r\\n';\n } else if (transceiver.rtpSender && transceiver.rtpReceiver) {\n sdp += 'a=sendrecv\\r\\n';\n } else if (transceiver.rtpSender) {\n sdp += 'a=sendonly\\r\\n';\n } else if (transceiver.rtpReceiver) {\n sdp += 'a=recvonly\\r\\n';\n } else {\n sdp += 'a=inactive\\r\\n';\n }\n\n if (transceiver.rtpSender) {\n // spec.\n var msid = 'msid:' + stream.id + ' ' +\n transceiver.rtpSender.track.id + '\\r\\n';\n sdp += 'a=' + msid;\n\n // for Chrome.\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n ' ' + msid;\n if (transceiver.sendEncodingParameters[0].rtx) {\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +\n ' ' + msid;\n sdp += 'a=ssrc-group:FID ' +\n transceiver.sendEncodingParameters[0].ssrc + ' ' +\n transceiver.sendEncodingParameters[0].rtx.ssrc +\n '\\r\\n';\n }\n }\n // FIXME: this should be written by writeRtpDescription.\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n ' cname:' + SDPUtils.localCName + '\\r\\n';\n if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +\n ' cname:' + SDPUtils.localCName + '\\r\\n';\n }\n return sdp;\n};\n\n// Gets the direction from the mediaSection or the sessionpart.\nSDPUtils.getDirection = function(mediaSection, sessionpart) {\n // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.\n var lines = SDPUtils.splitLines(mediaSection);\n for (var i = 0; i < lines.length; i++) {\n switch (lines[i]) {\n case 'a=sendrecv':\n case 'a=sendonly':\n case 'a=recvonly':\n case 'a=inactive':\n return lines[i].substr(2);\n default:\n // FIXME: What should happen here?\n }\n }\n if (sessionpart) {\n return SDPUtils.getDirection(sessionpart);\n }\n return 'sendrecv';\n};\n\nSDPUtils.getKind = function(mediaSection) {\n var lines = SDPUtils.splitLines(mediaSection);\n var mline = lines[0].split(' ');\n return mline[0].substr(2);\n};\n\nSDPUtils.isRejected = function(mediaSection) {\n return mediaSection.split(' ', 2)[1] === '0';\n};\n\nSDPUtils.parseMLine = function(mediaSection) {\n var lines = SDPUtils.splitLines(mediaSection);\n var parts = lines[0].substr(2).split(' ');\n return {\n kind: parts[0],\n port: parseInt(parts[1], 10),\n protocol: parts[2],\n fmt: parts.slice(3).join(' ')\n };\n};\n\nSDPUtils.parseOLine = function(mediaSection) {\n var line = SDPUtils.matchPrefix(mediaSection, 'o=')[0];\n var parts = line.substr(2).split(' ');\n return {\n username: parts[0],\n sessionId: parts[1],\n sessionVersion: parseInt(parts[2], 10),\n netType: parts[3],\n addressType: parts[4],\n address: parts[5]\n };\n};\n\n// a very naive interpretation of a valid SDP.\nSDPUtils.isValidSDP = function(blob) {\n if (typeof blob !== 'string' || blob.length === 0) {\n return false;\n }\n var lines = SDPUtils.splitLines(blob);\n for (var i = 0; i < lines.length; i++) {\n if (lines[i].length < 2 || lines[i].charAt(1) !== '=') {\n return false;\n }\n // TODO: check the modifier a bit more.\n }\n return true;\n};\n\n// Expose public methods.\nif (typeof module === 'object') {\n module.exports = SDPUtils;\n}\n","/*\n * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n /* eslint-env node */\n'use strict';\n\nvar SDPUtils = require('sdp');\n\nfunction fixStatsType(stat) {\n return {\n inboundrtp: 'inbound-rtp',\n outboundrtp: 'outbound-rtp',\n candidatepair: 'candidate-pair',\n localcandidate: 'local-candidate',\n remotecandidate: 'remote-candidate'\n }[stat.type] || stat.type;\n}\n\nfunction writeMediaSection(transceiver, caps, type, stream, dtlsRole) {\n var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps);\n\n // Map ICE parameters (ufrag, pwd) to SDP.\n sdp += SDPUtils.writeIceParameters(\n transceiver.iceGatherer.getLocalParameters());\n\n // Map DTLS parameters to SDP.\n sdp += SDPUtils.writeDtlsParameters(\n transceiver.dtlsTransport.getLocalParameters(),\n type === 'offer' ? 'actpass' : dtlsRole || 'active');\n\n sdp += 'a=mid:' + transceiver.mid + '\\r\\n';\n\n if (transceiver.rtpSender && transceiver.rtpReceiver) {\n sdp += 'a=sendrecv\\r\\n';\n } else if (transceiver.rtpSender) {\n sdp += 'a=sendonly\\r\\n';\n } else if (transceiver.rtpReceiver) {\n sdp += 'a=recvonly\\r\\n';\n } else {\n sdp += 'a=inactive\\r\\n';\n }\n\n if (transceiver.rtpSender) {\n var trackId = transceiver.rtpSender._initialTrackId ||\n transceiver.rtpSender.track.id;\n transceiver.rtpSender._initialTrackId = trackId;\n // spec.\n var msid = 'msid:' + (stream ? stream.id : '-') + ' ' +\n trackId + '\\r\\n';\n sdp += 'a=' + msid;\n // for Chrome. Legacy should no longer be required.\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n ' ' + msid;\n\n // RTX\n if (transceiver.sendEncodingParameters[0].rtx) {\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +\n ' ' + msid;\n sdp += 'a=ssrc-group:FID ' +\n transceiver.sendEncodingParameters[0].ssrc + ' ' +\n transceiver.sendEncodingParameters[0].rtx.ssrc +\n '\\r\\n';\n }\n }\n // FIXME: this should be written by writeRtpDescription.\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc +\n ' cname:' + SDPUtils.localCName + '\\r\\n';\n if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) {\n sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc +\n ' cname:' + SDPUtils.localCName + '\\r\\n';\n }\n return sdp;\n}\n\n// Edge does not like\n// 1) stun: filtered after 14393 unless ?transport=udp is present\n// 2) turn: that does not have all of turn:host:port?transport=udp\n// 3) turn: with ipv6 addresses\n// 4) turn: occurring muliple times\nfunction filterIceServers(iceServers, edgeVersion) {\n var hasTurn = false;\n iceServers = JSON.parse(JSON.stringify(iceServers));\n return iceServers.filter(function(server) {\n if (server && (server.urls || server.url)) {\n var urls = server.urls || server.url;\n if (server.url && !server.urls) {\n console.warn('RTCIceServer.url is deprecated! Use urls instead.');\n }\n var isString = typeof urls === 'string';\n if (isString) {\n urls = [urls];\n }\n urls = urls.filter(function(url) {\n var validTurn = url.indexOf('turn:') === 0 &&\n url.indexOf('transport=udp') !== -1 &&\n url.indexOf('turn:[') === -1 &&\n !hasTurn;\n\n if (validTurn) {\n hasTurn = true;\n return true;\n }\n return url.indexOf('stun:') === 0 && edgeVersion >= 14393 &&\n url.indexOf('?transport=udp') === -1;\n });\n\n delete server.url;\n server.urls = isString ? urls[0] : urls;\n return !!urls.length;\n }\n });\n}\n\n// Determines the intersection of local and remote capabilities.\nfunction getCommonCapabilities(localCapabilities, remoteCapabilities) {\n var commonCapabilities = {\n codecs: [],\n headerExtensions: [],\n fecMechanisms: []\n };\n\n var findCodecByPayloadType = function(pt, codecs) {\n pt = parseInt(pt, 10);\n for (var i = 0; i < codecs.length; i++) {\n if (codecs[i].payloadType === pt ||\n codecs[i].preferredPayloadType === pt) {\n return codecs[i];\n }\n }\n };\n\n var rtxCapabilityMatches = function(lRtx, rRtx, lCodecs, rCodecs) {\n var lCodec = findCodecByPayloadType(lRtx.parameters.apt, lCodecs);\n var rCodec = findCodecByPayloadType(rRtx.parameters.apt, rCodecs);\n return lCodec && rCodec &&\n lCodec.name.toLowerCase() === rCodec.name.toLowerCase();\n };\n\n localCapabilities.codecs.forEach(function(lCodec) {\n for (var i = 0; i < remoteCapabilities.codecs.length; i++) {\n var rCodec = remoteCapabilities.codecs[i];\n if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() &&\n lCodec.clockRate === rCodec.clockRate) {\n if (lCodec.name.toLowerCase() === 'rtx' &&\n lCodec.parameters && rCodec.parameters.apt) {\n // for RTX we need to find the local rtx that has a apt\n // which points to the same local codec as the remote one.\n if (!rtxCapabilityMatches(lCodec, rCodec,\n localCapabilities.codecs, remoteCapabilities.codecs)) {\n continue;\n }\n }\n rCodec = JSON.parse(JSON.stringify(rCodec)); // deepcopy\n // number of channels is the highest common number of channels\n rCodec.numChannels = Math.min(lCodec.numChannels,\n rCodec.numChannels);\n // push rCodec so we reply with offerer payload type\n commonCapabilities.codecs.push(rCodec);\n\n // determine common feedback mechanisms\n rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) {\n for (var j = 0; j < lCodec.rtcpFeedback.length; j++) {\n if (lCodec.rtcpFeedback[j].type === fb.type &&\n lCodec.rtcpFeedback[j].parameter === fb.parameter) {\n return true;\n }\n }\n return false;\n });\n // FIXME: also need to determine .parameters\n // see https://github.com/openpeer/ortc/issues/569\n break;\n }\n }\n });\n\n localCapabilities.headerExtensions.forEach(function(lHeaderExtension) {\n for (var i = 0; i < remoteCapabilities.headerExtensions.length;\n i++) {\n var rHeaderExtension = remoteCapabilities.headerExtensions[i];\n if (lHeaderExtension.uri === rHeaderExtension.uri) {\n commonCapabilities.headerExtensions.push(rHeaderExtension);\n break;\n }\n }\n });\n\n // FIXME: fecMechanisms\n return commonCapabilities;\n}\n\n// is action=setLocalDescription with type allowed in signalingState\nfunction isActionAllowedInSignalingState(action, type, signalingState) {\n return {\n offer: {\n setLocalDescription: ['stable', 'have-local-offer'],\n setRemoteDescription: ['stable', 'have-remote-offer']\n },\n answer: {\n setLocalDescription: ['have-remote-offer', 'have-local-pranswer'],\n setRemoteDescription: ['have-local-offer', 'have-remote-pranswer']\n }\n }[type][action].indexOf(signalingState) !== -1;\n}\n\nfunction maybeAddCandidate(iceTransport, candidate) {\n // Edge's internal representation adds some fields therefore\n // not all fieldѕ are taken into account.\n var alreadyAdded = iceTransport.getRemoteCandidates()\n .find(function(remoteCandidate) {\n return candidate.foundation === remoteCandidate.foundation &&\n candidate.ip === remoteCandidate.ip &&\n candidate.port === remoteCandidate.port &&\n candidate.priority === remoteCandidate.priority &&\n candidate.protocol === remoteCandidate.protocol &&\n candidate.type === remoteCandidate.type;\n });\n if (!alreadyAdded) {\n iceTransport.addRemoteCandidate(candidate);\n }\n return !alreadyAdded;\n}\n\n\nfunction makeError(name, description) {\n var e = new Error(description);\n e.name = name;\n // legacy error codes from https://heycam.github.io/webidl/#idl-DOMException-error-names\n e.code = {\n NotSupportedError: 9,\n InvalidStateError: 11,\n InvalidAccessError: 15,\n TypeError: undefined,\n OperationError: undefined\n }[name];\n return e;\n}\n\nmodule.exports = function(window, edgeVersion) {\n // https://w3c.github.io/mediacapture-main/#mediastream\n // Helper function to add the track to the stream and\n // dispatch the event ourselves.\n function addTrackToStreamAndFireEvent(track, stream) {\n stream.addTrack(track);\n stream.dispatchEvent(new window.MediaStreamTrackEvent('addtrack',\n {track: track}));\n }\n\n function removeTrackFromStreamAndFireEvent(track, stream) {\n stream.removeTrack(track);\n stream.dispatchEvent(new window.MediaStreamTrackEvent('removetrack',\n {track: track}));\n }\n\n function fireAddTrack(pc, track, receiver, streams) {\n var trackEvent = new Event('track');\n trackEvent.track = track;\n trackEvent.receiver = receiver;\n trackEvent.transceiver = {receiver: receiver};\n trackEvent.streams = streams;\n window.setTimeout(function() {\n pc._dispatchEvent('track', trackEvent);\n });\n }\n\n var RTCPeerConnection = function(config) {\n var pc = this;\n\n var _eventTarget = document.createDocumentFragment();\n ['addEventListener', 'removeEventListener', 'dispatchEvent']\n .forEach(function(method) {\n pc[method] = _eventTarget[method].bind(_eventTarget);\n });\n\n this.canTrickleIceCandidates = null;\n\n this.needNegotiation = false;\n\n this.localStreams = [];\n this.remoteStreams = [];\n\n this._localDescription = null;\n this._remoteDescription = null;\n\n this.signalingState = 'stable';\n this.iceConnectionState = 'new';\n this.connectionState = 'new';\n this.iceGatheringState = 'new';\n\n config = JSON.parse(JSON.stringify(config || {}));\n\n this.usingBundle = config.bundlePolicy === 'max-bundle';\n if (config.rtcpMuxPolicy === 'negotiate') {\n throw(makeError('NotSupportedError',\n 'rtcpMuxPolicy \\'negotiate\\' is not supported'));\n } else if (!config.rtcpMuxPolicy) {\n config.rtcpMuxPolicy = 'require';\n }\n\n switch (config.iceTransportPolicy) {\n case 'all':\n case 'relay':\n break;\n default:\n config.iceTransportPolicy = 'all';\n break;\n }\n\n switch (config.bundlePolicy) {\n case 'balanced':\n case 'max-compat':\n case 'max-bundle':\n break;\n default:\n config.bundlePolicy = 'balanced';\n break;\n }\n\n config.iceServers = filterIceServers(config.iceServers || [], edgeVersion);\n\n this._iceGatherers = [];\n if (config.iceCandidatePoolSize) {\n for (var i = config.iceCandidatePoolSize; i > 0; i--) {\n this._iceGatherers.push(new window.RTCIceGatherer({\n iceServers: config.iceServers,\n gatherPolicy: config.iceTransportPolicy\n }));\n }\n } else {\n config.iceCandidatePoolSize = 0;\n }\n\n this._config = config;\n\n // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ...\n // everything that is needed to describe a SDP m-line.\n this.transceivers = [];\n\n this._sdpSessionId = SDPUtils.generateSessionId();\n this._sdpSessionVersion = 0;\n\n this._dtlsRole = undefined; // role for a=setup to use in answers.\n\n this._isClosed = false;\n };\n\n Object.defineProperty(RTCPeerConnection.prototype, 'localDescription', {\n configurable: true,\n get: function() {\n return this._localDescription;\n }\n });\n Object.defineProperty(RTCPeerConnection.prototype, 'remoteDescription', {\n configurable: true,\n get: function() {\n return this._remoteDescription;\n }\n });\n\n // set up event handlers on prototype\n RTCPeerConnection.prototype.onicecandidate = null;\n RTCPeerConnection.prototype.onaddstream = null;\n RTCPeerConnection.prototype.ontrack = null;\n RTCPeerConnection.prototype.onremovestream = null;\n RTCPeerConnection.prototype.onsignalingstatechange = null;\n RTCPeerConnection.prototype.oniceconnectionstatechange = null;\n RTCPeerConnection.prototype.onconnectionstatechange = null;\n RTCPeerConnection.prototype.onicegatheringstatechange = null;\n RTCPeerConnection.prototype.onnegotiationneeded = null;\n RTCPeerConnection.prototype.ondatachannel = null;\n\n RTCPeerConnection.prototype._dispatchEvent = function(name, event) {\n if (this._isClosed) {\n return;\n }\n this.dispatchEvent(event);\n if (typeof this['on' + name] === 'function') {\n this['on' + name](event);\n }\n };\n\n RTCPeerConnection.prototype._emitGatheringStateChange = function() {\n var event = new Event('icegatheringstatechange');\n this._dispatchEvent('icegatheringstatechange', event);\n };\n\n RTCPeerConnection.prototype.getConfiguration = function() {\n return this._config;\n };\n\n RTCPeerConnection.prototype.getLocalStreams = function() {\n return this.localStreams;\n };\n\n RTCPeerConnection.prototype.getRemoteStreams = function() {\n return this.remoteStreams;\n };\n\n // internal helper to create a transceiver object.\n // (which is not yet the same as the WebRTC 1.0 transceiver)\n RTCPeerConnection.prototype._createTransceiver = function(kind, doNotAdd) {\n var hasBundleTransport = this.transceivers.length > 0;\n var transceiver = {\n track: null,\n iceGatherer: null,\n iceTransport: null,\n dtlsTransport: null,\n localCapabilities: null,\n remoteCapabilities: null,\n rtpSender: null,\n rtpReceiver: null,\n kind: kind,\n mid: null,\n sendEncodingParameters: null,\n recvEncodingParameters: null,\n stream: null,\n associatedRemoteMediaStreams: [],\n wantReceive: true\n };\n if (this.usingBundle && hasBundleTransport) {\n transceiver.iceTransport = this.transceivers[0].iceTransport;\n transceiver.dtlsTransport = this.transceivers[0].dtlsTransport;\n } else {\n var transports = this._createIceAndDtlsTransports();\n transceiver.iceTransport = transports.iceTransport;\n transceiver.dtlsTransport = transports.dtlsTransport;\n }\n if (!doNotAdd) {\n this.transceivers.push(transceiver);\n }\n return transceiver;\n };\n\n RTCPeerConnection.prototype.addTrack = function(track, stream) {\n if (this._isClosed) {\n throw makeError('InvalidStateError',\n 'Attempted to call addTrack on a closed peerconnection.');\n }\n\n var alreadyExists = this.transceivers.find(function(s) {\n return s.track === track;\n });\n\n if (alreadyExists) {\n throw makeError('InvalidAccessError', 'Track already exists.');\n }\n\n var transceiver;\n for (var i = 0; i < this.transceivers.length; i++) {\n if (!this.transceivers[i].track &&\n this.transceivers[i].kind === track.kind) {\n transceiver = this.transceivers[i];\n }\n }\n if (!transceiver) {\n transceiver = this._createTransceiver(track.kind);\n }\n\n this._maybeFireNegotiationNeeded();\n\n if (this.localStreams.indexOf(stream) === -1) {\n this.localStreams.push(stream);\n }\n\n transceiver.track = track;\n transceiver.stream = stream;\n transceiver.rtpSender = new window.RTCRtpSender(track,\n transceiver.dtlsTransport);\n return transceiver.rtpSender;\n };\n\n RTCPeerConnection.prototype.addStream = function(stream) {\n var pc = this;\n if (edgeVersion >= 15025) {\n stream.getTracks().forEach(function(track) {\n pc.addTrack(track, stream);\n });\n } else {\n // Clone is necessary for local demos mostly, attaching directly\n // to two different senders does not work (build 10547).\n // Fixed in 15025 (or earlier)\n var clonedStream = stream.clone();\n stream.getTracks().forEach(function(track, idx) {\n var clonedTrack = clonedStream.getTracks()[idx];\n track.addEventListener('enabled', function(event) {\n clonedTrack.enabled = event.enabled;\n });\n });\n clonedStream.getTracks().forEach(function(track) {\n pc.addTrack(track, clonedStream);\n });\n }\n };\n\n RTCPeerConnection.prototype.removeTrack = function(sender) {\n if (this._isClosed) {\n throw makeError('InvalidStateError',\n 'Attempted to call removeTrack on a closed peerconnection.');\n }\n\n if (!(sender instanceof window.RTCRtpSender)) {\n throw new TypeError('Argument 1 of RTCPeerConnection.removeTrack ' +\n 'does not implement interface RTCRtpSender.');\n }\n\n var transceiver = this.transceivers.find(function(t) {\n return t.rtpSender === sender;\n });\n\n if (!transceiver) {\n throw makeError('InvalidAccessError',\n 'Sender was not created by this connection.');\n }\n var stream = transceiver.stream;\n\n transceiver.rtpSender.stop();\n transceiver.rtpSender = null;\n transceiver.track = null;\n transceiver.stream = null;\n\n // remove the stream from the set of local streams\n var localStreams = this.transceivers.map(function(t) {\n return t.stream;\n });\n if (localStreams.indexOf(stream) === -1 &&\n this.localStreams.indexOf(stream) > -1) {\n this.localStreams.splice(this.localStreams.indexOf(stream), 1);\n }\n\n this._maybeFireNegotiationNeeded();\n };\n\n RTCPeerConnection.prototype.removeStream = function(stream) {\n var pc = this;\n stream.getTracks().forEach(function(track) {\n var sender = pc.getSenders().find(function(s) {\n return s.track === track;\n });\n if (sender) {\n pc.removeTrack(sender);\n }\n });\n };\n\n RTCPeerConnection.prototype.getSenders = function() {\n return this.transceivers.filter(function(transceiver) {\n return !!transceiver.rtpSender;\n })\n .map(function(transceiver) {\n return transceiver.rtpSender;\n });\n };\n\n RTCPeerConnection.prototype.getReceivers = function() {\n return this.transceivers.filter(function(transceiver) {\n return !!transceiver.rtpReceiver;\n })\n .map(function(transceiver) {\n return transceiver.rtpReceiver;\n });\n };\n\n\n RTCPeerConnection.prototype._createIceGatherer = function(sdpMLineIndex,\n usingBundle) {\n var pc = this;\n if (usingBundle && sdpMLineIndex > 0) {\n return this.transceivers[0].iceGatherer;\n } else if (this._iceGatherers.length) {\n return this._iceGatherers.shift();\n }\n var iceGatherer = new window.RTCIceGatherer({\n iceServers: this._config.iceServers,\n gatherPolicy: this._config.iceTransportPolicy\n });\n Object.defineProperty(iceGatherer, 'state',\n {value: 'new', writable: true}\n );\n\n this.transceivers[sdpMLineIndex].bufferedCandidateEvents = [];\n this.transceivers[sdpMLineIndex].bufferCandidates = function(event) {\n var end = !event.candidate || Object.keys(event.candidate).length === 0;\n // polyfill since RTCIceGatherer.state is not implemented in\n // Edge 10547 yet.\n iceGatherer.state = end ? 'completed' : 'gathering';\n if (pc.transceivers[sdpMLineIndex].bufferedCandidateEvents !== null) {\n pc.transceivers[sdpMLineIndex].bufferedCandidateEvents.push(event);\n }\n };\n iceGatherer.addEventListener('localcandidate',\n this.transceivers[sdpMLineIndex].bufferCandidates);\n return iceGatherer;\n };\n\n // start gathering from an RTCIceGatherer.\n RTCPeerConnection.prototype._gather = function(mid, sdpMLineIndex) {\n var pc = this;\n var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer;\n if (iceGatherer.onlocalcandidate) {\n return;\n }\n var bufferedCandidateEvents =\n this.transceivers[sdpMLineIndex].bufferedCandidateEvents;\n this.transceivers[sdpMLineIndex].bufferedCandidateEvents = null;\n iceGatherer.removeEventListener('localcandidate',\n this.transceivers[sdpMLineIndex].bufferCandidates);\n iceGatherer.onlocalcandidate = function(evt) {\n if (pc.usingBundle && sdpMLineIndex > 0) {\n // if we know that we use bundle we can drop candidates with\n // ѕdpMLineIndex > 0. If we don't do this then our state gets\n // confused since we dispose the extra ice gatherer.\n return;\n }\n var event = new Event('icecandidate');\n event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex};\n\n var cand = evt.candidate;\n // Edge emits an empty object for RTCIceCandidateComplete‥\n var end = !cand || Object.keys(cand).length === 0;\n if (end) {\n // polyfill since RTCIceGatherer.state is not implemented in\n // Edge 10547 yet.\n if (iceGatherer.state === 'new' || iceGatherer.state === 'gathering') {\n iceGatherer.state = 'completed';\n }\n } else {\n if (iceGatherer.state === 'new') {\n iceGatherer.state = 'gathering';\n }\n // RTCIceCandidate doesn't have a component, needs to be added\n cand.component = 1;\n // also the usernameFragment. TODO: update SDP to take both variants.\n cand.ufrag = iceGatherer.getLocalParameters().usernameFragment;\n\n var serializedCandidate = SDPUtils.writeCandidate(cand);\n event.candidate = Object.assign(event.candidate,\n SDPUtils.parseCandidate(serializedCandidate));\n\n event.candidate.candidate = serializedCandidate;\n event.candidate.toJSON = function() {\n return {\n candidate: event.candidate.candidate,\n sdpMid: event.candidate.sdpMid,\n sdpMLineIndex: event.candidate.sdpMLineIndex,\n usernameFragment: event.candidate.usernameFragment\n };\n };\n }\n\n // update local description.\n var sections = SDPUtils.getMediaSections(pc._localDescription.sdp);\n if (!end) {\n sections[event.candidate.sdpMLineIndex] +=\n 'a=' + event.candidate.candidate + '\\r\\n';\n } else {\n sections[event.candidate.sdpMLineIndex] +=\n 'a=end-of-candidates\\r\\n';\n }\n pc._localDescription.sdp =\n SDPUtils.getDescription(pc._localDescription.sdp) +\n sections.join('');\n var complete = pc.transceivers.every(function(transceiver) {\n return transceiver.iceGatherer &&\n transceiver.iceGatherer.state === 'completed';\n });\n\n if (pc.iceGatheringState !== 'gathering') {\n pc.iceGatheringState = 'gathering';\n pc._emitGatheringStateChange();\n }\n\n // Emit candidate. Also emit null candidate when all gatherers are\n // complete.\n if (!end) {\n pc._dispatchEvent('icecandidate', event);\n }\n if (complete) {\n pc._dispatchEvent('icecandidate', new Event('icecandidate'));\n pc.iceGatheringState = 'complete';\n pc._emitGatheringStateChange();\n }\n };\n\n // emit already gathered candidates.\n window.setTimeout(function() {\n bufferedCandidateEvents.forEach(function(e) {\n iceGatherer.onlocalcandidate(e);\n });\n }, 0);\n };\n\n // Create ICE transport and DTLS transport.\n RTCPeerConnection.prototype._createIceAndDtlsTransports = function() {\n var pc = this;\n var iceTransport = new window.RTCIceTransport(null);\n iceTransport.onicestatechange = function() {\n pc._updateIceConnectionState();\n pc._updateConnectionState();\n };\n\n var dtlsTransport = new window.RTCDtlsTransport(iceTransport);\n dtlsTransport.ondtlsstatechange = function() {\n pc._updateConnectionState();\n };\n dtlsTransport.onerror = function() {\n // onerror does not set state to failed by itself.\n Object.defineProperty(dtlsTransport, 'state',\n {value: 'failed', writable: true});\n pc._updateConnectionState();\n };\n\n return {\n iceTransport: iceTransport,\n dtlsTransport: dtlsTransport\n };\n };\n\n // Destroy ICE gatherer, ICE transport and DTLS transport.\n // Without triggering the callbacks.\n RTCPeerConnection.prototype._disposeIceAndDtlsTransports = function(\n sdpMLineIndex) {\n var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer;\n if (iceGatherer) {\n delete iceGatherer.onlocalcandidate;\n delete this.transceivers[sdpMLineIndex].iceGatherer;\n }\n var iceTransport = this.transceivers[sdpMLineIndex].iceTransport;\n if (iceTransport) {\n delete iceTransport.onicestatechange;\n delete this.transceivers[sdpMLineIndex].iceTransport;\n }\n var dtlsTransport = this.transceivers[sdpMLineIndex].dtlsTransport;\n if (dtlsTransport) {\n delete dtlsTransport.ondtlsstatechange;\n delete dtlsTransport.onerror;\n delete this.transceivers[sdpMLineIndex].dtlsTransport;\n }\n };\n\n // Start the RTP Sender and Receiver for a transceiver.\n RTCPeerConnection.prototype._transceive = function(transceiver,\n send, recv) {\n var params = getCommonCapabilities(transceiver.localCapabilities,\n transceiver.remoteCapabilities);\n if (send && transceiver.rtpSender) {\n params.encodings = transceiver.sendEncodingParameters;\n params.rtcp = {\n cname: SDPUtils.localCName,\n compound: transceiver.rtcpParameters.compound\n };\n if (transceiver.recvEncodingParameters.length) {\n params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc;\n }\n transceiver.rtpSender.send(params);\n }\n if (recv && transceiver.rtpReceiver && params.codecs.length > 0) {\n // remove RTX field in Edge 14942\n if (transceiver.kind === 'video'\n && transceiver.recvEncodingParameters\n && edgeVersion < 15019) {\n transceiver.recvEncodingParameters.forEach(function(p) {\n delete p.rtx;\n });\n }\n if (transceiver.recvEncodingParameters.length) {\n params.encodings = transceiver.recvEncodingParameters;\n } else {\n params.encodings = [{}];\n }\n params.rtcp = {\n compound: transceiver.rtcpParameters.compound\n };\n if (transceiver.rtcpParameters.cname) {\n params.rtcp.cname = transceiver.rtcpParameters.cname;\n }\n if (transceiver.sendEncodingParameters.length) {\n params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc;\n }\n transceiver.rtpReceiver.receive(params);\n }\n };\n\n RTCPeerConnection.prototype.setLocalDescription = function(description) {\n var pc = this;\n\n // Note: pranswer is not supported.\n if (['offer', 'answer'].indexOf(description.type) === -1) {\n return Promise.reject(makeError('TypeError',\n 'Unsupported type \"' + description.type + '\"'));\n }\n\n if (!isActionAllowedInSignalingState('setLocalDescription',\n description.type, pc.signalingState) || pc._isClosed) {\n return Promise.reject(makeError('InvalidStateError',\n 'Can not set local ' + description.type +\n ' in state ' + pc.signalingState));\n }\n\n var sections;\n var sessionpart;\n if (description.type === 'offer') {\n // VERY limited support for SDP munging. Limited to:\n // * changing the order of codecs\n sections = SDPUtils.splitSections(description.sdp);\n sessionpart = sections.shift();\n sections.forEach(function(mediaSection, sdpMLineIndex) {\n var caps = SDPUtils.parseRtpParameters(mediaSection);\n pc.transceivers[sdpMLineIndex].localCapabilities = caps;\n });\n\n pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {\n pc._gather(transceiver.mid, sdpMLineIndex);\n });\n } else if (description.type === 'answer') {\n sections = SDPUtils.splitSections(pc._remoteDescription.sdp);\n sessionpart = sections.shift();\n var isIceLite = SDPUtils.matchPrefix(sessionpart,\n 'a=ice-lite').length > 0;\n sections.forEach(function(mediaSection, sdpMLineIndex) {\n var transceiver = pc.transceivers[sdpMLineIndex];\n var iceGatherer = transceiver.iceGatherer;\n var iceTransport = transceiver.iceTransport;\n var dtlsTransport = transceiver.dtlsTransport;\n var localCapabilities = transceiver.localCapabilities;\n var remoteCapabilities = transceiver.remoteCapabilities;\n\n // treat bundle-only as not-rejected.\n var rejected = SDPUtils.isRejected(mediaSection) &&\n SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0;\n\n if (!rejected && !transceiver.rejected) {\n var remoteIceParameters = SDPUtils.getIceParameters(\n mediaSection, sessionpart);\n var remoteDtlsParameters = SDPUtils.getDtlsParameters(\n mediaSection, sessionpart);\n if (isIceLite) {\n remoteDtlsParameters.role = 'server';\n }\n\n if (!pc.usingBundle || sdpMLineIndex === 0) {\n pc._gather(transceiver.mid, sdpMLineIndex);\n if (iceTransport.state === 'new') {\n iceTransport.start(iceGatherer, remoteIceParameters,\n isIceLite ? 'controlling' : 'controlled');\n }\n if (dtlsTransport.state === 'new') {\n dtlsTransport.start(remoteDtlsParameters);\n }\n }\n\n // Calculate intersection of capabilities.\n var params = getCommonCapabilities(localCapabilities,\n remoteCapabilities);\n\n // Start the RTCRtpSender. The RTCRtpReceiver for this\n // transceiver has already been started in setRemoteDescription.\n pc._transceive(transceiver,\n params.codecs.length > 0,\n false);\n }\n });\n }\n\n pc._localDescription = {\n type: description.type,\n sdp: description.sdp\n };\n if (description.type === 'offer') {\n pc._updateSignalingState('have-local-offer');\n } else {\n pc._updateSignalingState('stable');\n }\n\n return Promise.resolve();\n };\n\n RTCPeerConnection.prototype.setRemoteDescription = function(description) {\n var pc = this;\n\n // Note: pranswer is not supported.\n if (['offer', 'answer'].indexOf(description.type) === -1) {\n return Promise.reject(makeError('TypeError',\n 'Unsupported type \"' + description.type + '\"'));\n }\n\n if (!isActionAllowedInSignalingState('setRemoteDescription',\n description.type, pc.signalingState) || pc._isClosed) {\n return Promise.reject(makeError('InvalidStateError',\n 'Can not set remote ' + description.type +\n ' in state ' + pc.signalingState));\n }\n\n var streams = {};\n pc.remoteStreams.forEach(function(stream) {\n streams[stream.id] = stream;\n });\n var receiverList = [];\n var sections = SDPUtils.splitSections(description.sdp);\n var sessionpart = sections.shift();\n var isIceLite = SDPUtils.matchPrefix(sessionpart,\n 'a=ice-lite').length > 0;\n var usingBundle = SDPUtils.matchPrefix(sessionpart,\n 'a=group:BUNDLE ').length > 0;\n pc.usingBundle = usingBundle;\n var iceOptions = SDPUtils.matchPrefix(sessionpart,\n 'a=ice-options:')[0];\n if (iceOptions) {\n pc.canTrickleIceCandidates = iceOptions.substr(14).split(' ')\n .indexOf('trickle') >= 0;\n } else {\n pc.canTrickleIceCandidates = false;\n }\n\n sections.forEach(function(mediaSection, sdpMLineIndex) {\n var lines = SDPUtils.splitLines(mediaSection);\n var kind = SDPUtils.getKind(mediaSection);\n // treat bundle-only as not-rejected.\n var rejected = SDPUtils.isRejected(mediaSection) &&\n SDPUtils.matchPrefix(mediaSection, 'a=bundle-only').length === 0;\n var protocol = lines[0].substr(2).split(' ')[2];\n\n var direction = SDPUtils.getDirection(mediaSection, sessionpart);\n var remoteMsid = SDPUtils.parseMsid(mediaSection);\n\n var mid = SDPUtils.getMid(mediaSection) || SDPUtils.generateIdentifier();\n\n // Reject datachannels which are not implemented yet.\n if (rejected || (kind === 'application' && (protocol === 'DTLS/SCTP' ||\n protocol === 'UDP/DTLS/SCTP'))) {\n // TODO: this is dangerous in the case where a non-rejected m-line\n // becomes rejected.\n pc.transceivers[sdpMLineIndex] = {\n mid: mid,\n kind: kind,\n protocol: protocol,\n rejected: true\n };\n return;\n }\n\n if (!rejected && pc.transceivers[sdpMLineIndex] &&\n pc.transceivers[sdpMLineIndex].rejected) {\n // recycle a rejected transceiver.\n pc.transceivers[sdpMLineIndex] = pc._createTransceiver(kind, true);\n }\n\n var transceiver;\n var iceGatherer;\n var iceTransport;\n var dtlsTransport;\n var rtpReceiver;\n var sendEncodingParameters;\n var recvEncodingParameters;\n var localCapabilities;\n\n var track;\n // FIXME: ensure the mediaSection has rtcp-mux set.\n var remoteCapabilities = SDPUtils.parseRtpParameters(mediaSection);\n var remoteIceParameters;\n var remoteDtlsParameters;\n if (!rejected) {\n remoteIceParameters = SDPUtils.getIceParameters(mediaSection,\n sessionpart);\n remoteDtlsParameters = SDPUtils.getDtlsParameters(mediaSection,\n sessionpart);\n remoteDtlsParameters.role = 'client';\n }\n recvEncodingParameters =\n SDPUtils.parseRtpEncodingParameters(mediaSection);\n\n var rtcpParameters = SDPUtils.parseRtcpParameters(mediaSection);\n\n var isComplete = SDPUtils.matchPrefix(mediaSection,\n 'a=end-of-candidates', sessionpart).length > 0;\n var cands = SDPUtils.matchPrefix(mediaSection, 'a=candidate:')\n .map(function(cand) {\n return SDPUtils.parseCandidate(cand);\n })\n .filter(function(cand) {\n return cand.component === 1;\n });\n\n // Check if we can use BUNDLE and dispose transports.\n if ((description.type === 'offer' || description.type === 'answer') &&\n !rejected && usingBundle && sdpMLineIndex > 0 &&\n pc.transceivers[sdpMLineIndex]) {\n pc._disposeIceAndDtlsTransports(sdpMLineIndex);\n pc.transceivers[sdpMLineIndex].iceGatherer =\n pc.transceivers[0].iceGatherer;\n pc.transceivers[sdpMLineIndex].iceTransport =\n pc.transceivers[0].iceTransport;\n pc.transceivers[sdpMLineIndex].dtlsTransport =\n pc.transceivers[0].dtlsTransport;\n if (pc.transceivers[sdpMLineIndex].rtpSender) {\n pc.transceivers[sdpMLineIndex].rtpSender.setTransport(\n pc.transceivers[0].dtlsTransport);\n }\n if (pc.transceivers[sdpMLineIndex].rtpReceiver) {\n pc.transceivers[sdpMLineIndex].rtpReceiver.setTransport(\n pc.transceivers[0].dtlsTransport);\n }\n }\n if (description.type === 'offer' && !rejected) {\n transceiver = pc.transceivers[sdpMLineIndex] ||\n pc._createTransceiver(kind);\n transceiver.mid = mid;\n\n if (!transceiver.iceGatherer) {\n transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex,\n usingBundle);\n }\n\n if (cands.length && transceiver.iceTransport.state === 'new') {\n if (isComplete && (!usingBundle || sdpMLineIndex === 0)) {\n transceiver.iceTransport.setRemoteCandidates(cands);\n } else {\n cands.forEach(function(candidate) {\n maybeAddCandidate(transceiver.iceTransport, candidate);\n });\n }\n }\n\n localCapabilities = window.RTCRtpReceiver.getCapabilities(kind);\n\n // filter RTX until additional stuff needed for RTX is implemented\n // in adapter.js\n if (edgeVersion < 15019) {\n localCapabilities.codecs = localCapabilities.codecs.filter(\n function(codec) {\n return codec.name !== 'rtx';\n });\n }\n\n sendEncodingParameters = transceiver.sendEncodingParameters || [{\n ssrc: (2 * sdpMLineIndex + 2) * 1001\n }];\n\n // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams\n var isNewTrack = false;\n if (direction === 'sendrecv' || direction === 'sendonly') {\n isNewTrack = !transceiver.rtpReceiver;\n rtpReceiver = transceiver.rtpReceiver ||\n new window.RTCRtpReceiver(transceiver.dtlsTransport, kind);\n\n if (isNewTrack) {\n var stream;\n track = rtpReceiver.track;\n // FIXME: does not work with Plan B.\n if (remoteMsid && remoteMsid.stream === '-') {\n // no-op. a stream id of '-' means: no associated stream.\n } else if (remoteMsid) {\n if (!streams[remoteMsid.stream]) {\n streams[remoteMsid.stream] = new window.MediaStream();\n Object.defineProperty(streams[remoteMsid.stream], 'id', {\n get: function() {\n return remoteMsid.stream;\n }\n });\n }\n Object.defineProperty(track, 'id', {\n get: function() {\n return remoteMsid.track;\n }\n });\n stream = streams[remoteMsid.stream];\n } else {\n if (!streams.default) {\n streams.default = new window.MediaStream();\n }\n stream = streams.default;\n }\n if (stream) {\n addTrackToStreamAndFireEvent(track, stream);\n transceiver.associatedRemoteMediaStreams.push(stream);\n }\n receiverList.push([track, rtpReceiver, stream]);\n }\n } else if (transceiver.rtpReceiver && transceiver.rtpReceiver.track) {\n transceiver.associatedRemoteMediaStreams.forEach(function(s) {\n var nativeTrack = s.getTracks().find(function(t) {\n return t.id === transceiver.rtpReceiver.track.id;\n });\n if (nativeTrack) {\n removeTrackFromStreamAndFireEvent(nativeTrack, s);\n }\n });\n transceiver.associatedRemoteMediaStreams = [];\n }\n\n transceiver.localCapabilities = localCapabilities;\n transceiver.remoteCapabilities = remoteCapabilities;\n transceiver.rtpReceiver = rtpReceiver;\n transceiver.rtcpParameters = rtcpParameters;\n transceiver.sendEncodingParameters = sendEncodingParameters;\n transceiver.recvEncodingParameters = recvEncodingParameters;\n\n // Start the RTCRtpReceiver now. The RTPSender is started in\n // setLocalDescription.\n pc._transceive(pc.transceivers[sdpMLineIndex],\n false,\n isNewTrack);\n } else if (description.type === 'answer' && !rejected) {\n transceiver = pc.transceivers[sdpMLineIndex];\n iceGatherer = transceiver.iceGatherer;\n iceTransport = transceiver.iceTransport;\n dtlsTransport = transceiver.dtlsTransport;\n rtpReceiver = transceiver.rtpReceiver;\n sendEncodingParameters = transceiver.sendEncodingParameters;\n localCapabilities = transceiver.localCapabilities;\n\n pc.transceivers[sdpMLineIndex].recvEncodingParameters =\n recvEncodingParameters;\n pc.transceivers[sdpMLineIndex].remoteCapabilities =\n remoteCapabilities;\n pc.transceivers[sdpMLineIndex].rtcpParameters = rtcpParameters;\n\n if (cands.length && iceTransport.state === 'new') {\n if ((isIceLite || isComplete) &&\n (!usingBundle || sdpMLineIndex === 0)) {\n iceTransport.setRemoteCandidates(cands);\n } else {\n cands.forEach(function(candidate) {\n maybeAddCandidate(transceiver.iceTransport, candidate);\n });\n }\n }\n\n if (!usingBundle || sdpMLineIndex === 0) {\n if (iceTransport.state === 'new') {\n iceTransport.start(iceGatherer, remoteIceParameters,\n 'controlling');\n }\n if (dtlsTransport.state === 'new') {\n dtlsTransport.start(remoteDtlsParameters);\n }\n }\n\n // If the offer contained RTX but the answer did not,\n // remove RTX from sendEncodingParameters.\n var commonCapabilities = getCommonCapabilities(\n transceiver.localCapabilities,\n transceiver.remoteCapabilities);\n\n var hasRtx = commonCapabilities.codecs.filter(function(c) {\n return c.name.toLowerCase() === 'rtx';\n }).length;\n if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) {\n delete transceiver.sendEncodingParameters[0].rtx;\n }\n\n pc._transceive(transceiver,\n direction === 'sendrecv' || direction === 'recvonly',\n direction === 'sendrecv' || direction === 'sendonly');\n\n // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams\n if (rtpReceiver &&\n (direction === 'sendrecv' || direction === 'sendonly')) {\n track = rtpReceiver.track;\n if (remoteMsid) {\n if (!streams[remoteMsid.stream]) {\n streams[remoteMsid.stream] = new window.MediaStream();\n }\n addTrackToStreamAndFireEvent(track, streams[remoteMsid.stream]);\n receiverList.push([track, rtpReceiver, streams[remoteMsid.stream]]);\n } else {\n if (!streams.default) {\n streams.default = new window.MediaStream();\n }\n addTrackToStreamAndFireEvent(track, streams.default);\n receiverList.push([track, rtpReceiver, streams.default]);\n }\n } else {\n // FIXME: actually the receiver should be created later.\n delete transceiver.rtpReceiver;\n }\n }\n });\n\n if (pc._dtlsRole === undefined) {\n pc._dtlsRole = description.type === 'offer' ? 'active' : 'passive';\n }\n\n pc._remoteDescription = {\n type: description.type,\n sdp: description.sdp\n };\n if (description.type === 'offer') {\n pc._updateSignalingState('have-remote-offer');\n } else {\n pc._updateSignalingState('stable');\n }\n Object.keys(streams).forEach(function(sid) {\n var stream = streams[sid];\n if (stream.getTracks().length) {\n if (pc.remoteStreams.indexOf(stream) === -1) {\n pc.remoteStreams.push(stream);\n var event = new Event('addstream');\n event.stream = stream;\n window.setTimeout(function() {\n pc._dispatchEvent('addstream', event);\n });\n }\n\n receiverList.forEach(function(item) {\n var track = item[0];\n var receiver = item[1];\n if (stream.id !== item[2].id) {\n return;\n }\n fireAddTrack(pc, track, receiver, [stream]);\n });\n }\n });\n receiverList.forEach(function(item) {\n if (item[2]) {\n return;\n }\n fireAddTrack(pc, item[0], item[1], []);\n });\n\n // check whether addIceCandidate({}) was called within four seconds after\n // setRemoteDescription.\n window.setTimeout(function() {\n if (!(pc && pc.transceivers)) {\n return;\n }\n pc.transceivers.forEach(function(transceiver) {\n if (transceiver.iceTransport &&\n transceiver.iceTransport.state === 'new' &&\n transceiver.iceTransport.getRemoteCandidates().length > 0) {\n console.warn('Timeout for addRemoteCandidate. Consider sending ' +\n 'an end-of-candidates notification');\n transceiver.iceTransport.addRemoteCandidate({});\n }\n });\n }, 4000);\n\n return Promise.resolve();\n };\n\n RTCPeerConnection.prototype.close = function() {\n this.transceivers.forEach(function(transceiver) {\n /* not yet\n if (transceiver.iceGatherer) {\n transceiver.iceGatherer.close();\n }\n */\n if (transceiver.iceTransport) {\n transceiver.iceTransport.stop();\n }\n if (transceiver.dtlsTransport) {\n transceiver.dtlsTransport.stop();\n }\n if (transceiver.rtpSender) {\n transceiver.rtpSender.stop();\n }\n if (transceiver.rtpReceiver) {\n transceiver.rtpReceiver.stop();\n }\n });\n // FIXME: clean up tracks, local streams, remote streams, etc\n this._isClosed = true;\n this._updateSignalingState('closed');\n };\n\n // Update the signaling state.\n RTCPeerConnection.prototype._updateSignalingState = function(newState) {\n this.signalingState = newState;\n var event = new Event('signalingstatechange');\n this._dispatchEvent('signalingstatechange', event);\n };\n\n // Determine whether to fire the negotiationneeded event.\n RTCPeerConnection.prototype._maybeFireNegotiationNeeded = function() {\n var pc = this;\n if (this.signalingState !== 'stable' || this.needNegotiation === true) {\n return;\n }\n this.needNegotiation = true;\n window.setTimeout(function() {\n if (pc.needNegotiation) {\n pc.needNegotiation = false;\n var event = new Event('negotiationneeded');\n pc._dispatchEvent('negotiationneeded', event);\n }\n }, 0);\n };\n\n // Update the ice connection state.\n RTCPeerConnection.prototype._updateIceConnectionState = function() {\n var newState;\n var states = {\n 'new': 0,\n closed: 0,\n checking: 0,\n connected: 0,\n completed: 0,\n disconnected: 0,\n failed: 0\n };\n this.transceivers.forEach(function(transceiver) {\n if (transceiver.iceTransport && !transceiver.rejected) {\n states[transceiver.iceTransport.state]++;\n }\n });\n\n newState = 'new';\n if (states.failed > 0) {\n newState = 'failed';\n } else if (states.checking > 0) {\n newState = 'checking';\n } else if (states.disconnected > 0) {\n newState = 'disconnected';\n } else if (states.new > 0) {\n newState = 'new';\n } else if (states.connected > 0) {\n newState = 'connected';\n } else if (states.completed > 0) {\n newState = 'completed';\n }\n\n if (newState !== this.iceConnectionState) {\n this.iceConnectionState = newState;\n var event = new Event('iceconnectionstatechange');\n this._dispatchEvent('iceconnectionstatechange', event);\n }\n };\n\n // Update the connection state.\n RTCPeerConnection.prototype._updateConnectionState = function() {\n var newState;\n var states = {\n 'new': 0,\n closed: 0,\n connecting: 0,\n connected: 0,\n completed: 0,\n disconnected: 0,\n failed: 0\n };\n this.transceivers.forEach(function(transceiver) {\n if (transceiver.iceTransport && transceiver.dtlsTransport &&\n !transceiver.rejected) {\n states[transceiver.iceTransport.state]++;\n states[transceiver.dtlsTransport.state]++;\n }\n });\n // ICETransport.completed and connected are the same for this purpose.\n states.connected += states.completed;\n\n newState = 'new';\n if (states.failed > 0) {\n newState = 'failed';\n } else if (states.connecting > 0) {\n newState = 'connecting';\n } else if (states.disconnected > 0) {\n newState = 'disconnected';\n } else if (states.new > 0) {\n newState = 'new';\n } else if (states.connected > 0) {\n newState = 'connected';\n }\n\n if (newState !== this.connectionState) {\n this.connectionState = newState;\n var event = new Event('connectionstatechange');\n this._dispatchEvent('connectionstatechange', event);\n }\n };\n\n RTCPeerConnection.prototype.createOffer = function() {\n var pc = this;\n\n if (pc._isClosed) {\n return Promise.reject(makeError('InvalidStateError',\n 'Can not call createOffer after close'));\n }\n\n var numAudioTracks = pc.transceivers.filter(function(t) {\n return t.kind === 'audio';\n }).length;\n var numVideoTracks = pc.transceivers.filter(function(t) {\n return t.kind === 'video';\n }).length;\n\n // Determine number of audio and video tracks we need to send/recv.\n var offerOptions = arguments[0];\n if (offerOptions) {\n // Reject Chrome legacy constraints.\n if (offerOptions.mandatory || offerOptions.optional) {\n throw new TypeError(\n 'Legacy mandatory/optional constraints not supported.');\n }\n if (offerOptions.offerToReceiveAudio !== undefined) {\n if (offerOptions.offerToReceiveAudio === true) {\n numAudioTracks = 1;\n } else if (offerOptions.offerToReceiveAudio === false) {\n numAudioTracks = 0;\n } else {\n numAudioTracks = offerOptions.offerToReceiveAudio;\n }\n }\n if (offerOptions.offerToReceiveVideo !== undefined) {\n if (offerOptions.offerToReceiveVideo === true) {\n numVideoTracks = 1;\n } else if (offerOptions.offerToReceiveVideo === false) {\n numVideoTracks = 0;\n } else {\n numVideoTracks = offerOptions.offerToReceiveVideo;\n }\n }\n }\n\n pc.transceivers.forEach(function(transceiver) {\n if (transceiver.kind === 'audio') {\n numAudioTracks--;\n if (numAudioTracks < 0) {\n transceiver.wantReceive = false;\n }\n } else if (transceiver.kind === 'video') {\n numVideoTracks--;\n if (numVideoTracks < 0) {\n transceiver.wantReceive = false;\n }\n }\n });\n\n // Create M-lines for recvonly streams.\n while (numAudioTracks > 0 || numVideoTracks > 0) {\n if (numAudioTracks > 0) {\n pc._createTransceiver('audio');\n numAudioTracks--;\n }\n if (numVideoTracks > 0) {\n pc._createTransceiver('video');\n numVideoTracks--;\n }\n }\n\n var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId,\n pc._sdpSessionVersion++);\n pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {\n // For each track, create an ice gatherer, ice transport,\n // dtls transport, potentially rtpsender and rtpreceiver.\n var track = transceiver.track;\n var kind = transceiver.kind;\n var mid = transceiver.mid || SDPUtils.generateIdentifier();\n transceiver.mid = mid;\n\n if (!transceiver.iceGatherer) {\n transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex,\n pc.usingBundle);\n }\n\n var localCapabilities = window.RTCRtpSender.getCapabilities(kind);\n // filter RTX until additional stuff needed for RTX is implemented\n // in adapter.js\n if (edgeVersion < 15019) {\n localCapabilities.codecs = localCapabilities.codecs.filter(\n function(codec) {\n return codec.name !== 'rtx';\n });\n }\n localCapabilities.codecs.forEach(function(codec) {\n // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552\n // by adding level-asymmetry-allowed=1\n if (codec.name === 'H264' &&\n codec.parameters['level-asymmetry-allowed'] === undefined) {\n codec.parameters['level-asymmetry-allowed'] = '1';\n }\n\n // for subsequent offers, we might have to re-use the payload\n // type of the last offer.\n if (transceiver.remoteCapabilities &&\n transceiver.remoteCapabilities.codecs) {\n transceiver.remoteCapabilities.codecs.forEach(function(remoteCodec) {\n if (codec.name.toLowerCase() === remoteCodec.name.toLowerCase() &&\n codec.clockRate === remoteCodec.clockRate) {\n codec.preferredPayloadType = remoteCodec.payloadType;\n }\n });\n }\n });\n localCapabilities.headerExtensions.forEach(function(hdrExt) {\n var remoteExtensions = transceiver.remoteCapabilities &&\n transceiver.remoteCapabilities.headerExtensions || [];\n remoteExtensions.forEach(function(rHdrExt) {\n if (hdrExt.uri === rHdrExt.uri) {\n hdrExt.id = rHdrExt.id;\n }\n });\n });\n\n // generate an ssrc now, to be used later in rtpSender.send\n var sendEncodingParameters = transceiver.sendEncodingParameters || [{\n ssrc: (2 * sdpMLineIndex + 1) * 1001\n }];\n if (track) {\n // add RTX\n if (edgeVersion >= 15019 && kind === 'video' &&\n !sendEncodingParameters[0].rtx) {\n sendEncodingParameters[0].rtx = {\n ssrc: sendEncodingParameters[0].ssrc + 1\n };\n }\n }\n\n if (transceiver.wantReceive) {\n transceiver.rtpReceiver = new window.RTCRtpReceiver(\n transceiver.dtlsTransport, kind);\n }\n\n transceiver.localCapabilities = localCapabilities;\n transceiver.sendEncodingParameters = sendEncodingParameters;\n });\n\n // always offer BUNDLE and dispose on return if not supported.\n if (pc._config.bundlePolicy !== 'max-compat') {\n sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) {\n return t.mid;\n }).join(' ') + '\\r\\n';\n }\n sdp += 'a=ice-options:trickle\\r\\n';\n\n pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {\n sdp += writeMediaSection(transceiver, transceiver.localCapabilities,\n 'offer', transceiver.stream, pc._dtlsRole);\n sdp += 'a=rtcp-rsize\\r\\n';\n\n if (transceiver.iceGatherer && pc.iceGatheringState !== 'new' &&\n (sdpMLineIndex === 0 || !pc.usingBundle)) {\n transceiver.iceGatherer.getLocalCandidates().forEach(function(cand) {\n cand.component = 1;\n sdp += 'a=' + SDPUtils.writeCandidate(cand) + '\\r\\n';\n });\n\n if (transceiver.iceGatherer.state === 'completed') {\n sdp += 'a=end-of-candidates\\r\\n';\n }\n }\n });\n\n var desc = new window.RTCSessionDescription({\n type: 'offer',\n sdp: sdp\n });\n return Promise.resolve(desc);\n };\n\n RTCPeerConnection.prototype.createAnswer = function() {\n var pc = this;\n\n if (pc._isClosed) {\n return Promise.reject(makeError('InvalidStateError',\n 'Can not call createAnswer after close'));\n }\n\n if (!(pc.signalingState === 'have-remote-offer' ||\n pc.signalingState === 'have-local-pranswer')) {\n return Promise.reject(makeError('InvalidStateError',\n 'Can not call createAnswer in signalingState ' + pc.signalingState));\n }\n\n var sdp = SDPUtils.writeSessionBoilerplate(pc._sdpSessionId,\n pc._sdpSessionVersion++);\n if (pc.usingBundle) {\n sdp += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) {\n return t.mid;\n }).join(' ') + '\\r\\n';\n }\n sdp += 'a=ice-options:trickle\\r\\n';\n\n var mediaSectionsInOffer = SDPUtils.getMediaSections(\n pc._remoteDescription.sdp).length;\n pc.transceivers.forEach(function(transceiver, sdpMLineIndex) {\n if (sdpMLineIndex + 1 > mediaSectionsInOffer) {\n return;\n }\n if (transceiver.rejected) {\n if (transceiver.kind === 'application') {\n if (transceiver.protocol === 'DTLS/SCTP') { // legacy fmt\n sdp += 'm=application 0 DTLS/SCTP 5000\\r\\n';\n } else {\n sdp += 'm=application 0 ' + transceiver.protocol +\n ' webrtc-datachannel\\r\\n';\n }\n } else if (transceiver.kind === 'audio') {\n sdp += 'm=audio 0 UDP/TLS/RTP/SAVPF 0\\r\\n' +\n 'a=rtpmap:0 PCMU/8000\\r\\n';\n } else if (transceiver.kind === 'video') {\n sdp += 'm=video 0 UDP/TLS/RTP/SAVPF 120\\r\\n' +\n 'a=rtpmap:120 VP8/90000\\r\\n';\n }\n sdp += 'c=IN IP4 0.0.0.0\\r\\n' +\n 'a=inactive\\r\\n' +\n 'a=mid:' + transceiver.mid + '\\r\\n';\n return;\n }\n\n // FIXME: look at direction.\n if (transceiver.stream) {\n var localTrack;\n if (transceiver.kind === 'audio') {\n localTrack = transceiver.stream.getAudioTracks()[0];\n } else if (transceiver.kind === 'video') {\n localTrack = transceiver.stream.getVideoTracks()[0];\n }\n if (localTrack) {\n // add RTX\n if (edgeVersion >= 15019 && transceiver.kind === 'video' &&\n !transceiver.sendEncodingParameters[0].rtx) {\n transceiver.sendEncodingParameters[0].rtx = {\n ssrc: transceiver.sendEncodingParameters[0].ssrc + 1\n };\n }\n }\n }\n\n // Calculate intersection of capabilities.\n var commonCapabilities = getCommonCapabilities(\n transceiver.localCapabilities,\n transceiver.remoteCapabilities);\n\n var hasRtx = commonCapabilities.codecs.filter(function(c) {\n return c.name.toLowerCase() === 'rtx';\n }).length;\n if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) {\n delete transceiver.sendEncodingParameters[0].rtx;\n }\n\n sdp += writeMediaSection(transceiver, commonCapabilities,\n 'answer', transceiver.stream, pc._dtlsRole);\n if (transceiver.rtcpParameters &&\n transceiver.rtcpParameters.reducedSize) {\n sdp += 'a=rtcp-rsize\\r\\n';\n }\n });\n\n var desc = new window.RTCSessionDescription({\n type: 'answer',\n sdp: sdp\n });\n return Promise.resolve(desc);\n };\n\n RTCPeerConnection.prototype.addIceCandidate = function(candidate) {\n var pc = this;\n var sections;\n if (candidate && !(candidate.sdpMLineIndex !== undefined ||\n candidate.sdpMid)) {\n return Promise.reject(new TypeError('sdpMLineIndex or sdpMid required'));\n }\n\n // TODO: needs to go into ops queue.\n return new Promise(function(resolve, reject) {\n if (!pc._remoteDescription) {\n return reject(makeError('InvalidStateError',\n 'Can not add ICE candidate without a remote description'));\n } else if (!candidate || candidate.candidate === '') {\n for (var j = 0; j < pc.transceivers.length; j++) {\n if (pc.transceivers[j].rejected) {\n continue;\n }\n pc.transceivers[j].iceTransport.addRemoteCandidate({});\n sections = SDPUtils.getMediaSections(pc._remoteDescription.sdp);\n sections[j] += 'a=end-of-candidates\\r\\n';\n pc._remoteDescription.sdp =\n SDPUtils.getDescription(pc._remoteDescription.sdp) +\n sections.join('');\n if (pc.usingBundle) {\n break;\n }\n }\n } else {\n var sdpMLineIndex = candidate.sdpMLineIndex;\n if (candidate.sdpMid) {\n for (var i = 0; i < pc.transceivers.length; i++) {\n if (pc.transceivers[i].mid === candidate.sdpMid) {\n sdpMLineIndex = i;\n break;\n }\n }\n }\n var transceiver = pc.transceivers[sdpMLineIndex];\n if (transceiver) {\n if (transceiver.rejected) {\n return resolve();\n }\n var cand = Object.keys(candidate.candidate).length > 0 ?\n SDPUtils.parseCandidate(candidate.candidate) : {};\n // Ignore Chrome's invalid candidates since Edge does not like them.\n if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) {\n return resolve();\n }\n // Ignore RTCP candidates, we assume RTCP-MUX.\n if (cand.component && cand.component !== 1) {\n return resolve();\n }\n // when using bundle, avoid adding candidates to the wrong\n // ice transport. And avoid adding candidates added in the SDP.\n if (sdpMLineIndex === 0 || (sdpMLineIndex > 0 &&\n transceiver.iceTransport !== pc.transceivers[0].iceTransport)) {\n if (!maybeAddCandidate(transceiver.iceTransport, cand)) {\n return reject(makeError('OperationError',\n 'Can not add ICE candidate'));\n }\n }\n\n // update the remoteDescription.\n var candidateString = candidate.candidate.trim();\n if (candidateString.indexOf('a=') === 0) {\n candidateString = candidateString.substr(2);\n }\n sections = SDPUtils.getMediaSections(pc._remoteDescription.sdp);\n sections[sdpMLineIndex] += 'a=' +\n (cand.type ? candidateString : 'end-of-candidates')\n + '\\r\\n';\n pc._remoteDescription.sdp =\n SDPUtils.getDescription(pc._remoteDescription.sdp) +\n sections.join('');\n } else {\n return reject(makeError('OperationError',\n 'Can not add ICE candidate'));\n }\n }\n resolve();\n });\n };\n\n RTCPeerConnection.prototype.getStats = function(selector) {\n if (selector && selector instanceof window.MediaStreamTrack) {\n var senderOrReceiver = null;\n this.transceivers.forEach(function(transceiver) {\n if (transceiver.rtpSender &&\n transceiver.rtpSender.track === selector) {\n senderOrReceiver = transceiver.rtpSender;\n } else if (transceiver.rtpReceiver &&\n transceiver.rtpReceiver.track === selector) {\n senderOrReceiver = transceiver.rtpReceiver;\n }\n });\n if (!senderOrReceiver) {\n throw makeError('InvalidAccessError', 'Invalid selector.');\n }\n return senderOrReceiver.getStats();\n }\n\n var promises = [];\n this.transceivers.forEach(function(transceiver) {\n ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport',\n 'dtlsTransport'].forEach(function(method) {\n if (transceiver[method]) {\n promises.push(transceiver[method].getStats());\n }\n });\n });\n return Promise.all(promises).then(function(allStats) {\n var results = new Map();\n allStats.forEach(function(stats) {\n stats.forEach(function(stat) {\n results.set(stat.id, stat);\n });\n });\n return results;\n });\n };\n\n // fix low-level stat names and return Map instead of object.\n var ortcObjects = ['RTCRtpSender', 'RTCRtpReceiver', 'RTCIceGatherer',\n 'RTCIceTransport', 'RTCDtlsTransport'];\n ortcObjects.forEach(function(ortcObjectName) {\n var obj = window[ortcObjectName];\n if (obj && obj.prototype && obj.prototype.getStats) {\n var nativeGetstats = obj.prototype.getStats;\n obj.prototype.getStats = function() {\n return nativeGetstats.apply(this)\n .then(function(nativeStats) {\n var mapStats = new Map();\n Object.keys(nativeStats).forEach(function(id) {\n nativeStats[id].type = fixStatsType(nativeStats[id]);\n mapStats.set(id, nativeStats[id]);\n });\n return mapStats;\n });\n };\n }\n });\n\n // legacy callback shims. Should be moved to adapter.js some days.\n var methods = ['createOffer', 'createAnswer'];\n methods.forEach(function(method) {\n var nativeMethod = RTCPeerConnection.prototype[method];\n RTCPeerConnection.prototype[method] = function() {\n var args = arguments;\n if (typeof args[0] === 'function' ||\n typeof args[1] === 'function') { // legacy\n return nativeMethod.apply(this, [arguments[2]])\n .then(function(description) {\n if (typeof args[0] === 'function') {\n args[0].apply(null, [description]);\n }\n }, function(error) {\n if (typeof args[1] === 'function') {\n args[1].apply(null, [error]);\n }\n });\n }\n return nativeMethod.apply(this, arguments);\n };\n });\n\n methods = ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'];\n methods.forEach(function(method) {\n var nativeMethod = RTCPeerConnection.prototype[method];\n RTCPeerConnection.prototype[method] = function() {\n var args = arguments;\n if (typeof args[1] === 'function' ||\n typeof args[2] === 'function') { // legacy\n return nativeMethod.apply(this, arguments)\n .then(function() {\n if (typeof args[1] === 'function') {\n args[1].apply(null);\n }\n }, function(error) {\n if (typeof args[2] === 'function') {\n args[2].apply(null, [error]);\n }\n });\n }\n return nativeMethod.apply(this, arguments);\n };\n });\n\n // getStats is special. It doesn't have a spec legacy method yet we support\n // getStats(something, cb) without error callbacks.\n ['getStats'].forEach(function(method) {\n var nativeMethod = RTCPeerConnection.prototype[method];\n RTCPeerConnection.prototype[method] = function() {\n var args = arguments;\n if (typeof args[1] === 'function') {\n return nativeMethod.apply(this, arguments)\n .then(function() {\n if (typeof args[1] === 'function') {\n args[1].apply(null);\n }\n });\n }\n return nativeMethod.apply(this, arguments);\n };\n });\n\n return RTCPeerConnection;\n};\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n /* eslint-env node */\n'use strict';\n\nexport function shimGetUserMedia(window) {\n const navigator = window && window.navigator;\n\n const shimError_ = function(e) {\n return {\n name: {PermissionDeniedError: 'NotAllowedError'}[e.name] || e.name,\n message: e.message,\n constraint: e.constraint,\n toString() {\n return this.name;\n }\n };\n };\n\n // getUserMedia error shim.\n const origGetUserMedia = navigator.mediaDevices.getUserMedia.\n bind(navigator.mediaDevices);\n navigator.mediaDevices.getUserMedia = function(c) {\n return origGetUserMedia(c).catch(e => Promise.reject(shimError_(e)));\n };\n}\n","/*\n * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n /* eslint-env node */\n'use strict';\n\nexport function shimGetDisplayMedia(window) {\n if (!('getDisplayMedia' in window.navigator)) {\n return;\n }\n if (!(window.navigator.mediaDevices)) {\n return;\n }\n if (window.navigator.mediaDevices &&\n 'getDisplayMedia' in window.navigator.mediaDevices) {\n return;\n }\n window.navigator.mediaDevices.getDisplayMedia =\n window.navigator.getDisplayMedia.bind(window.navigator);\n}\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nimport * as utils from '../utils';\nimport {filterIceServers} from './filtericeservers';\nimport shimRTCPeerConnection from 'rtcpeerconnection-shim';\n\nexport {shimGetUserMedia} from './getusermedia';\nexport {shimGetDisplayMedia} from './getdisplaymedia';\n\nexport function shimPeerConnection(window, browserDetails) {\n if (window.RTCIceGatherer) {\n if (!window.RTCIceCandidate) {\n window.RTCIceCandidate = function RTCIceCandidate(args) {\n return args;\n };\n }\n if (!window.RTCSessionDescription) {\n window.RTCSessionDescription = function RTCSessionDescription(args) {\n return args;\n };\n }\n // this adds an additional event listener to MediaStrackTrack that signals\n // when a tracks enabled property was changed. Workaround for a bug in\n // addStream, see below. No longer required in 15025+\n if (browserDetails.version < 15025) {\n const origMSTEnabled = Object.getOwnPropertyDescriptor(\n window.MediaStreamTrack.prototype, 'enabled');\n Object.defineProperty(window.MediaStreamTrack.prototype, 'enabled', {\n set(value) {\n origMSTEnabled.set.call(this, value);\n const ev = new Event('enabled');\n ev.enabled = value;\n this.dispatchEvent(ev);\n }\n });\n }\n }\n\n // ORTC defines the DTMF sender a bit different.\n // https://github.com/w3c/ortc/issues/714\n if (window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) {\n Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', {\n get() {\n if (this._dtmf === undefined) {\n if (this.track.kind === 'audio') {\n this._dtmf = new window.RTCDtmfSender(this);\n } else if (this.track.kind === 'video') {\n this._dtmf = null;\n }\n }\n return this._dtmf;\n }\n });\n }\n // Edge currently only implements the RTCDtmfSender, not the\n // RTCDTMFSender alias. See http://draft.ortc.org/#rtcdtmfsender2*\n if (window.RTCDtmfSender && !window.RTCDTMFSender) {\n window.RTCDTMFSender = window.RTCDtmfSender;\n }\n\n const RTCPeerConnectionShim = shimRTCPeerConnection(window,\n browserDetails.version);\n window.RTCPeerConnection = function RTCPeerConnection(config) {\n if (config && config.iceServers) {\n config.iceServers = filterIceServers(config.iceServers,\n browserDetails.version);\n utils.log('ICE servers after filtering:', config.iceServers);\n }\n return new RTCPeerConnectionShim(config);\n };\n window.RTCPeerConnection.prototype = RTCPeerConnectionShim.prototype;\n}\n\nexport function shimReplaceTrack(window) {\n // ORTC has replaceTrack -- https://github.com/w3c/ortc/issues/614\n if (window.RTCRtpSender &&\n !('replaceTrack' in window.RTCRtpSender.prototype)) {\n window.RTCRtpSender.prototype.replaceTrack =\n window.RTCRtpSender.prototype.setTrack;\n }\n}\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nimport * as utils from '../utils';\n\nexport function shimGetUserMedia(window, browserDetails) {\n const navigator = window && window.navigator;\n const MediaStreamTrack = window && window.MediaStreamTrack;\n\n navigator.getUserMedia = function(constraints, onSuccess, onError) {\n // Replace Firefox 44+'s deprecation warning with unprefixed version.\n utils.deprecated('navigator.getUserMedia',\n 'navigator.mediaDevices.getUserMedia');\n navigator.mediaDevices.getUserMedia(constraints).then(onSuccess, onError);\n };\n\n if (!(browserDetails.version > 55 &&\n 'autoGainControl' in navigator.mediaDevices.getSupportedConstraints())) {\n const remap = function(obj, a, b) {\n if (a in obj && !(b in obj)) {\n obj[b] = obj[a];\n delete obj[a];\n }\n };\n\n const nativeGetUserMedia = navigator.mediaDevices.getUserMedia.\n bind(navigator.mediaDevices);\n navigator.mediaDevices.getUserMedia = function(c) {\n if (typeof c === 'object' && typeof c.audio === 'object') {\n c = JSON.parse(JSON.stringify(c));\n remap(c.audio, 'autoGainControl', 'mozAutoGainControl');\n remap(c.audio, 'noiseSuppression', 'mozNoiseSuppression');\n }\n return nativeGetUserMedia(c);\n };\n\n if (MediaStreamTrack && MediaStreamTrack.prototype.getSettings) {\n const nativeGetSettings = MediaStreamTrack.prototype.getSettings;\n MediaStreamTrack.prototype.getSettings = function() {\n const obj = nativeGetSettings.apply(this, arguments);\n remap(obj, 'mozAutoGainControl', 'autoGainControl');\n remap(obj, 'mozNoiseSuppression', 'noiseSuppression');\n return obj;\n };\n }\n\n if (MediaStreamTrack && MediaStreamTrack.prototype.applyConstraints) {\n const nativeApplyConstraints =\n MediaStreamTrack.prototype.applyConstraints;\n MediaStreamTrack.prototype.applyConstraints = function(c) {\n if (this.kind === 'audio' && typeof c === 'object') {\n c = JSON.parse(JSON.stringify(c));\n remap(c, 'autoGainControl', 'mozAutoGainControl');\n remap(c, 'noiseSuppression', 'mozNoiseSuppression');\n }\n return nativeApplyConstraints.apply(this, [c]);\n };\n }\n }\n}\n","/*\n * Copyright (c) 2018 The adapter.js project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nexport function shimGetDisplayMedia(window, preferredMediaSource) {\n if (window.navigator.mediaDevices &&\n 'getDisplayMedia' in window.navigator.mediaDevices) {\n return;\n }\n if (!(window.navigator.mediaDevices)) {\n return;\n }\n window.navigator.mediaDevices.getDisplayMedia =\n function getDisplayMedia(constraints) {\n if (!(constraints && constraints.video)) {\n const err = new DOMException('getDisplayMedia without video ' +\n 'constraints is undefined');\n err.name = 'NotFoundError';\n // from https://heycam.github.io/webidl/#idl-DOMException-error-names\n err.code = 8;\n return Promise.reject(err);\n }\n if (constraints.video === true) {\n constraints.video = {mediaSource: preferredMediaSource};\n } else {\n constraints.video.mediaSource = preferredMediaSource;\n }\n return window.navigator.mediaDevices.getUserMedia(constraints);\n };\n}\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nimport * as utils from '../utils';\nexport {shimGetUserMedia} from './getusermedia';\nexport {shimGetDisplayMedia} from './getdisplaymedia';\n\nexport function shimOnTrack(window) {\n if (typeof window === 'object' && window.RTCTrackEvent &&\n ('receiver' in window.RTCTrackEvent.prototype) &&\n !('transceiver' in window.RTCTrackEvent.prototype)) {\n Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', {\n get() {\n return {receiver: this.receiver};\n }\n });\n }\n}\n\nexport function shimPeerConnection(window, browserDetails) {\n if (typeof window !== 'object' ||\n !(window.RTCPeerConnection || window.mozRTCPeerConnection)) {\n return; // probably media.peerconnection.enabled=false in about:config\n }\n if (!window.RTCPeerConnection && window.mozRTCPeerConnection) {\n // very basic support for old versions.\n window.RTCPeerConnection = window.mozRTCPeerConnection;\n }\n\n if (browserDetails.version < 53) {\n // shim away need for obsolete RTCIceCandidate/RTCSessionDescription.\n ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate']\n .forEach(function(method) {\n const nativeMethod = window.RTCPeerConnection.prototype[method];\n const methodObj = {[method]() {\n arguments[0] = new ((method === 'addIceCandidate') ?\n window.RTCIceCandidate :\n window.RTCSessionDescription)(arguments[0]);\n return nativeMethod.apply(this, arguments);\n }};\n window.RTCPeerConnection.prototype[method] = methodObj[method];\n });\n }\n\n const modernStatsTypes = {\n inboundrtp: 'inbound-rtp',\n outboundrtp: 'outbound-rtp',\n candidatepair: 'candidate-pair',\n localcandidate: 'local-candidate',\n remotecandidate: 'remote-candidate'\n };\n\n const nativeGetStats = window.RTCPeerConnection.prototype.getStats;\n window.RTCPeerConnection.prototype.getStats = function getStats() {\n const [selector, onSucc, onErr] = arguments;\n return nativeGetStats.apply(this, [selector || null])\n .then(stats => {\n if (browserDetails.version < 53 && !onSucc) {\n // Shim only promise getStats with spec-hyphens in type names\n // Leave callback version alone; misc old uses of forEach before Map\n try {\n stats.forEach(stat => {\n stat.type = modernStatsTypes[stat.type] || stat.type;\n });\n } catch (e) {\n if (e.name !== 'TypeError') {\n throw e;\n }\n // Avoid TypeError: \"type\" is read-only, in old versions. 34-43ish\n stats.forEach((stat, i) => {\n stats.set(i, Object.assign({}, stat, {\n type: modernStatsTypes[stat.type] || stat.type\n }));\n });\n }\n }\n return stats;\n })\n .then(onSucc, onErr);\n };\n}\n\nexport function shimSenderGetStats(window) {\n if (!(typeof window === 'object' && window.RTCPeerConnection &&\n window.RTCRtpSender)) {\n return;\n }\n if (window.RTCRtpSender && 'getStats' in window.RTCRtpSender.prototype) {\n return;\n }\n const origGetSenders = window.RTCPeerConnection.prototype.getSenders;\n if (origGetSenders) {\n window.RTCPeerConnection.prototype.getSenders = function getSenders() {\n const senders = origGetSenders.apply(this, []);\n senders.forEach(sender => sender._pc = this);\n return senders;\n };\n }\n\n const origAddTrack = window.RTCPeerConnection.prototype.addTrack;\n if (origAddTrack) {\n window.RTCPeerConnection.prototype.addTrack = function addTrack() {\n const sender = origAddTrack.apply(this, arguments);\n sender._pc = this;\n return sender;\n };\n }\n window.RTCRtpSender.prototype.getStats = function getStats() {\n return this.track ? this._pc.getStats(this.track) :\n Promise.resolve(new Map());\n };\n}\n\nexport function shimReceiverGetStats(window) {\n if (!(typeof window === 'object' && window.RTCPeerConnection &&\n window.RTCRtpSender)) {\n return;\n }\n if (window.RTCRtpSender && 'getStats' in window.RTCRtpReceiver.prototype) {\n return;\n }\n const origGetReceivers = window.RTCPeerConnection.prototype.getReceivers;\n if (origGetReceivers) {\n window.RTCPeerConnection.prototype.getReceivers = function getReceivers() {\n const receivers = origGetReceivers.apply(this, []);\n receivers.forEach(receiver => receiver._pc = this);\n return receivers;\n };\n }\n utils.wrapPeerConnectionEvent(window, 'track', e => {\n e.receiver._pc = e.srcElement;\n return e;\n });\n window.RTCRtpReceiver.prototype.getStats = function getStats() {\n return this._pc.getStats(this.track);\n };\n}\n\nexport function shimRemoveStream(window) {\n if (!window.RTCPeerConnection ||\n 'removeStream' in window.RTCPeerConnection.prototype) {\n return;\n }\n window.RTCPeerConnection.prototype.removeStream =\n function removeStream(stream) {\n utils.deprecated('removeStream', 'removeTrack');\n this.getSenders().forEach(sender => {\n if (sender.track && stream.getTracks().includes(sender.track)) {\n this.removeTrack(sender);\n }\n });\n };\n}\n\nexport function shimRTCDataChannel(window) {\n // rename DataChannel to RTCDataChannel (native fix in FF60):\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1173851\n if (window.DataChannel && !window.RTCDataChannel) {\n window.RTCDataChannel = window.DataChannel;\n }\n}\n\nexport function shimAddTransceiver(window) {\n // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647\n // Firefox ignores the init sendEncodings options passed to addTransceiver\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918\n if (!(typeof window === 'object' && window.RTCPeerConnection)) {\n return;\n }\n const origAddTransceiver = window.RTCPeerConnection.prototype.addTransceiver;\n if (origAddTransceiver) {\n window.RTCPeerConnection.prototype.addTransceiver =\n function addTransceiver() {\n this.setParametersPromises = [];\n const initParameters = arguments[1];\n const shouldPerformCheck = initParameters &&\n 'sendEncodings' in initParameters;\n if (shouldPerformCheck) {\n // If sendEncodings params are provided, validate grammar\n initParameters.sendEncodings.forEach((encodingParam) => {\n if ('rid' in encodingParam) {\n const ridRegex = /^[a-z0-9]{0,16}$/i;\n if (!ridRegex.test(encodingParam.rid)) {\n throw new TypeError('Invalid RID value provided.');\n }\n }\n if ('scaleResolutionDownBy' in encodingParam) {\n if (!(parseFloat(encodingParam.scaleResolutionDownBy) >= 1.0)) {\n throw new RangeError('scale_resolution_down_by must be >= 1.0');\n }\n }\n if ('maxFramerate' in encodingParam) {\n if (!(parseFloat(encodingParam.maxFramerate) >= 0)) {\n throw new RangeError('max_framerate must be >= 0.0');\n }\n }\n });\n }\n const transceiver = origAddTransceiver.apply(this, arguments);\n if (shouldPerformCheck) {\n // Check if the init options were applied. If not we do this in an\n // asynchronous way and save the promise reference in a global object.\n // This is an ugly hack, but at the same time is way more robust than\n // checking the sender parameters before and after the createOffer\n // Also note that after the createoffer we are not 100% sure that\n // the params were asynchronously applied so we might miss the\n // opportunity to recreate offer.\n const {sender} = transceiver;\n const params = sender.getParameters();\n if (!('encodings' in params) ||\n // Avoid being fooled by patched getParameters() below.\n (params.encodings.length === 1 &&\n Object.keys(params.encodings[0]).length === 0)) {\n params.encodings = initParameters.sendEncodings;\n sender.sendEncodings = initParameters.sendEncodings;\n this.setParametersPromises.push(sender.setParameters(params)\n .then(() => {\n delete sender.sendEncodings;\n }).catch(() => {\n delete sender.sendEncodings;\n })\n );\n }\n }\n return transceiver;\n };\n }\n}\n\nexport function shimGetParameters(window) {\n if (!(typeof window === 'object' && window.RTCRtpSender)) {\n return;\n }\n const origGetParameters = window.RTCRtpSender.prototype.getParameters;\n if (origGetParameters) {\n window.RTCRtpSender.prototype.getParameters =\n function getParameters() {\n const params = origGetParameters.apply(this, arguments);\n if (!('encodings' in params)) {\n params.encodings = [].concat(this.sendEncodings || [{}]);\n }\n return params;\n };\n }\n}\n\nexport function shimCreateOffer(window) {\n // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647\n // Firefox ignores the init sendEncodings options passed to addTransceiver\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918\n if (!(typeof window === 'object' && window.RTCPeerConnection)) {\n return;\n }\n const origCreateOffer = window.RTCPeerConnection.prototype.createOffer;\n window.RTCPeerConnection.prototype.createOffer = function createOffer() {\n if (this.setParametersPromises && this.setParametersPromises.length) {\n return Promise.all(this.setParametersPromises)\n .then(() => {\n return origCreateOffer.apply(this, arguments);\n })\n .finally(() => {\n this.setParametersPromises = [];\n });\n }\n return origCreateOffer.apply(this, arguments);\n };\n}\n\nexport function shimCreateAnswer(window) {\n // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647\n // Firefox ignores the init sendEncodings options passed to addTransceiver\n // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918\n if (!(typeof window === 'object' && window.RTCPeerConnection)) {\n return;\n }\n const origCreateAnswer = window.RTCPeerConnection.prototype.createAnswer;\n window.RTCPeerConnection.prototype.createAnswer = function createAnswer() {\n if (this.setParametersPromises && this.setParametersPromises.length) {\n return Promise.all(this.setParametersPromises)\n .then(() => {\n return origCreateAnswer.apply(this, arguments);\n })\n .finally(() => {\n this.setParametersPromises = [];\n });\n }\n return origCreateAnswer.apply(this, arguments);\n };\n}\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n'use strict';\nimport * as utils from '../utils';\n\nexport function shimLocalStreamsAPI(window) {\n if (typeof window !== 'object' || !window.RTCPeerConnection) {\n return;\n }\n if (!('getLocalStreams' in window.RTCPeerConnection.prototype)) {\n window.RTCPeerConnection.prototype.getLocalStreams =\n function getLocalStreams() {\n if (!this._localStreams) {\n this._localStreams = [];\n }\n return this._localStreams;\n };\n }\n if (!('addStream' in window.RTCPeerConnection.prototype)) {\n const _addTrack = window.RTCPeerConnection.prototype.addTrack;\n window.RTCPeerConnection.prototype.addStream = function addStream(stream) {\n if (!this._localStreams) {\n this._localStreams = [];\n }\n if (!this._localStreams.includes(stream)) {\n this._localStreams.push(stream);\n }\n // Try to emulate Chrome's behaviour of adding in audio-video order.\n // Safari orders by track id.\n stream.getAudioTracks().forEach(track => _addTrack.call(this, track,\n stream));\n stream.getVideoTracks().forEach(track => _addTrack.call(this, track,\n stream));\n };\n\n window.RTCPeerConnection.prototype.addTrack =\n function addTrack(track, ...streams) {\n if (streams) {\n streams.forEach((stream) => {\n if (!this._localStreams) {\n this._localStreams = [stream];\n } else if (!this._localStreams.includes(stream)) {\n this._localStreams.push(stream);\n }\n });\n }\n return _addTrack.apply(this, arguments);\n };\n }\n if (!('removeStream' in window.RTCPeerConnection.prototype)) {\n window.RTCPeerConnection.prototype.removeStream =\n function removeStream(stream) {\n if (!this._localStreams) {\n this._localStreams = [];\n }\n const index = this._localStreams.indexOf(stream);\n if (index === -1) {\n return;\n }\n this._localStreams.splice(index, 1);\n const tracks = stream.getTracks();\n this.getSenders().forEach(sender => {\n if (tracks.includes(sender.track)) {\n this.removeTrack(sender);\n }\n });\n };\n }\n}\n\nexport function shimRemoteStreamsAPI(window) {\n if (typeof window !== 'object' || !window.RTCPeerConnection) {\n return;\n }\n if (!('getRemoteStreams' in window.RTCPeerConnection.prototype)) {\n window.RTCPeerConnection.prototype.getRemoteStreams =\n function getRemoteStreams() {\n return this._remoteStreams ? this._remoteStreams : [];\n };\n }\n if (!('onaddstream' in window.RTCPeerConnection.prototype)) {\n Object.defineProperty(window.RTCPeerConnection.prototype, 'onaddstream', {\n get() {\n return this._onaddstream;\n },\n set(f) {\n if (this._onaddstream) {\n this.removeEventListener('addstream', this._onaddstream);\n this.removeEventListener('track', this._onaddstreampoly);\n }\n this.addEventListener('addstream', this._onaddstream = f);\n this.addEventListener('track', this._onaddstreampoly = (e) => {\n e.streams.forEach(stream => {\n if (!this._remoteStreams) {\n this._remoteStreams = [];\n }\n if (this._remoteStreams.includes(stream)) {\n return;\n }\n this._remoteStreams.push(stream);\n const event = new Event('addstream');\n event.stream = stream;\n this.dispatchEvent(event);\n });\n });\n }\n });\n const origSetRemoteDescription =\n window.RTCPeerConnection.prototype.setRemoteDescription;\n window.RTCPeerConnection.prototype.setRemoteDescription =\n function setRemoteDescription() {\n const pc = this;\n if (!this._onaddstreampoly) {\n this.addEventListener('track', this._onaddstreampoly = function(e) {\n e.streams.forEach(stream => {\n if (!pc._remoteStreams) {\n pc._remoteStreams = [];\n }\n if (pc._remoteStreams.indexOf(stream) >= 0) {\n return;\n }\n pc._remoteStreams.push(stream);\n const event = new Event('addstream');\n event.stream = stream;\n pc.dispatchEvent(event);\n });\n });\n }\n return origSetRemoteDescription.apply(pc, arguments);\n };\n }\n}\n\nexport function shimCallbacksAPI(window) {\n if (typeof window !== 'object' || !window.RTCPeerConnection) {\n return;\n }\n const prototype = window.RTCPeerConnection.prototype;\n const origCreateOffer = prototype.createOffer;\n const origCreateAnswer = prototype.createAnswer;\n const setLocalDescription = prototype.setLocalDescription;\n const setRemoteDescription = prototype.setRemoteDescription;\n const addIceCandidate = prototype.addIceCandidate;\n\n prototype.createOffer =\n function createOffer(successCallback, failureCallback) {\n const options = (arguments.length >= 2) ? arguments[2] : arguments[0];\n const promise = origCreateOffer.apply(this, [options]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n\n prototype.createAnswer =\n function createAnswer(successCallback, failureCallback) {\n const options = (arguments.length >= 2) ? arguments[2] : arguments[0];\n const promise = origCreateAnswer.apply(this, [options]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n\n let withCallback = function(description, successCallback, failureCallback) {\n const promise = setLocalDescription.apply(this, [description]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n prototype.setLocalDescription = withCallback;\n\n withCallback = function(description, successCallback, failureCallback) {\n const promise = setRemoteDescription.apply(this, [description]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n prototype.setRemoteDescription = withCallback;\n\n withCallback = function(candidate, successCallback, failureCallback) {\n const promise = addIceCandidate.apply(this, [candidate]);\n if (!failureCallback) {\n return promise;\n }\n promise.then(successCallback, failureCallback);\n return Promise.resolve();\n };\n prototype.addIceCandidate = withCallback;\n}\n\nexport function shimGetUserMedia(window) {\n const navigator = window && window.navigator;\n\n if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {\n // shim not needed in Safari 12.1\n const mediaDevices = navigator.mediaDevices;\n const _getUserMedia = mediaDevices.getUserMedia.bind(mediaDevices);\n navigator.mediaDevices.getUserMedia = (constraints) => {\n return _getUserMedia(shimConstraints(constraints));\n };\n }\n\n if (!navigator.getUserMedia && navigator.mediaDevices &&\n navigator.mediaDevices.getUserMedia) {\n navigator.getUserMedia = function getUserMedia(constraints, cb, errcb) {\n navigator.mediaDevices.getUserMedia(constraints)\n .then(cb, errcb);\n }.bind(navigator);\n }\n}\n\nexport function shimConstraints(constraints) {\n if (constraints && constraints.video !== undefined) {\n return Object.assign({},\n constraints,\n {video: utils.compactObject(constraints.video)}\n );\n }\n\n return constraints;\n}\n\nexport function shimRTCIceServerUrls(window) {\n if (!window.RTCPeerConnection) {\n return;\n }\n // migrate from non-spec RTCIceServer.url to RTCIceServer.urls\n const OrigPeerConnection = window.RTCPeerConnection;\n window.RTCPeerConnection =\n function RTCPeerConnection(pcConfig, pcConstraints) {\n if (pcConfig && pcConfig.iceServers) {\n const newIceServers = [];\n for (let i = 0; i < pcConfig.iceServers.length; i++) {\n let server = pcConfig.iceServers[i];\n if (!server.hasOwnProperty('urls') &&\n server.hasOwnProperty('url')) {\n utils.deprecated('RTCIceServer.url', 'RTCIceServer.urls');\n server = JSON.parse(JSON.stringify(server));\n server.urls = server.url;\n delete server.url;\n newIceServers.push(server);\n } else {\n newIceServers.push(pcConfig.iceServers[i]);\n }\n }\n pcConfig.iceServers = newIceServers;\n }\n return new OrigPeerConnection(pcConfig, pcConstraints);\n };\n window.RTCPeerConnection.prototype = OrigPeerConnection.prototype;\n // wrap static methods. Currently just generateCertificate.\n if ('generateCertificate' in OrigPeerConnection) {\n Object.defineProperty(window.RTCPeerConnection, 'generateCertificate', {\n get() {\n return OrigPeerConnection.generateCertificate;\n }\n });\n }\n}\n\nexport function shimTrackEventTransceiver(window) {\n // Add event.transceiver member over deprecated event.receiver\n if (typeof window === 'object' && window.RTCTrackEvent &&\n 'receiver' in window.RTCTrackEvent.prototype &&\n !('transceiver' in window.RTCTrackEvent.prototype)) {\n Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', {\n get() {\n return {receiver: this.receiver};\n }\n });\n }\n}\n\nexport function shimCreateOfferLegacy(window) {\n const origCreateOffer = window.RTCPeerConnection.prototype.createOffer;\n window.RTCPeerConnection.prototype.createOffer =\n function createOffer(offerOptions) {\n if (offerOptions) {\n if (typeof offerOptions.offerToReceiveAudio !== 'undefined') {\n // support bit values\n offerOptions.offerToReceiveAudio =\n !!offerOptions.offerToReceiveAudio;\n }\n const audioTransceiver = this.getTransceivers().find(transceiver =>\n transceiver.receiver.track.kind === 'audio');\n if (offerOptions.offerToReceiveAudio === false && audioTransceiver) {\n if (audioTransceiver.direction === 'sendrecv') {\n if (audioTransceiver.setDirection) {\n audioTransceiver.setDirection('sendonly');\n } else {\n audioTransceiver.direction = 'sendonly';\n }\n } else if (audioTransceiver.direction === 'recvonly') {\n if (audioTransceiver.setDirection) {\n audioTransceiver.setDirection('inactive');\n } else {\n audioTransceiver.direction = 'inactive';\n }\n }\n } else if (offerOptions.offerToReceiveAudio === true &&\n !audioTransceiver) {\n this.addTransceiver('audio');\n }\n\n if (typeof offerOptions.offerToReceiveVideo !== 'undefined') {\n // support bit values\n offerOptions.offerToReceiveVideo =\n !!offerOptions.offerToReceiveVideo;\n }\n const videoTransceiver = this.getTransceivers().find(transceiver =>\n transceiver.receiver.track.kind === 'video');\n if (offerOptions.offerToReceiveVideo === false && videoTransceiver) {\n if (videoTransceiver.direction === 'sendrecv') {\n if (videoTransceiver.setDirection) {\n videoTransceiver.setDirection('sendonly');\n } else {\n videoTransceiver.direction = 'sendonly';\n }\n } else if (videoTransceiver.direction === 'recvonly') {\n if (videoTransceiver.setDirection) {\n videoTransceiver.setDirection('inactive');\n } else {\n videoTransceiver.direction = 'inactive';\n }\n }\n } else if (offerOptions.offerToReceiveVideo === true &&\n !videoTransceiver) {\n this.addTransceiver('video');\n }\n }\n return origCreateOffer.apply(this, arguments);\n };\n}\n\nexport function shimAudioContext(window) {\n if (typeof window !== 'object' || window.AudioContext) {\n return;\n }\n window.AudioContext = window.webkitAudioContext;\n}\n","/*\n * Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n'use strict';\n\nimport SDPUtils from 'sdp';\nimport * as utils from './utils';\n\nexport function shimRTCIceCandidate(window) {\n // foundation is arbitrarily chosen as an indicator for full support for\n // https://w3c.github.io/webrtc-pc/#rtcicecandidate-interface\n if (!window.RTCIceCandidate || (window.RTCIceCandidate && 'foundation' in\n window.RTCIceCandidate.prototype)) {\n return;\n }\n\n const NativeRTCIceCandidate = window.RTCIceCandidate;\n window.RTCIceCandidate = function RTCIceCandidate(args) {\n // Remove the a= which shouldn't be part of the candidate string.\n if (typeof args === 'object' && args.candidate &&\n args.candidate.indexOf('a=') === 0) {\n args = JSON.parse(JSON.stringify(args));\n args.candidate = args.candidate.substr(2);\n }\n\n if (args.candidate && args.candidate.length) {\n // Augment the native candidate with the parsed fields.\n const nativeCandidate = new NativeRTCIceCandidate(args);\n const parsedCandidate = SDPUtils.parseCandidate(args.candidate);\n const augmentedCandidate = Object.assign(nativeCandidate,\n parsedCandidate);\n\n // Add a serializer that does not serialize the extra attributes.\n augmentedCandidate.toJSON = function toJSON() {\n return {\n candidate: augmentedCandidate.candidate,\n sdpMid: augmentedCandidate.sdpMid,\n sdpMLineIndex: augmentedCandidate.sdpMLineIndex,\n usernameFragment: augmentedCandidate.usernameFragment,\n };\n };\n return augmentedCandidate;\n }\n return new NativeRTCIceCandidate(args);\n };\n window.RTCIceCandidate.prototype = NativeRTCIceCandidate.prototype;\n\n // Hook up the augmented candidate in onicecandidate and\n // addEventListener('icecandidate', ...)\n utils.wrapPeerConnectionEvent(window, 'icecandidate', e => {\n if (e.candidate) {\n Object.defineProperty(e, 'candidate', {\n value: new window.RTCIceCandidate(e.candidate),\n writable: 'false'\n });\n }\n return e;\n });\n}\n\nexport function shimMaxMessageSize(window, browserDetails) {\n if (!window.RTCPeerConnection) {\n return;\n }\n\n if (!('sctp' in window.RTCPeerConnection.prototype)) {\n Object.defineProperty(window.RTCPeerConnection.prototype, 'sctp', {\n get() {\n return typeof this._sctp === 'undefined' ? null : this._sctp;\n }\n });\n }\n\n const sctpInDescription = function(description) {\n if (!description || !description.sdp) {\n return false;\n }\n const sections = SDPUtils.splitSections(description.sdp);\n sections.shift();\n return sections.some(mediaSection => {\n const mLine = SDPUtils.parseMLine(mediaSection);\n return mLine && mLine.kind === 'application'\n && mLine.protocol.indexOf('SCTP') !== -1;\n });\n };\n\n const getRemoteFirefoxVersion = function(description) {\n // TODO: Is there a better solution for detecting Firefox?\n const match = description.sdp.match(/mozilla...THIS_IS_SDPARTA-(\\d+)/);\n if (match === null || match.length < 2) {\n return -1;\n }\n const version = parseInt(match[1], 10);\n // Test for NaN (yes, this is ugly)\n return version !== version ? -1 : version;\n };\n\n const getCanSendMaxMessageSize = function(remoteIsFirefox) {\n // Every implementation we know can send at least 64 KiB.\n // Note: Although Chrome is technically able to send up to 256 KiB, the\n // data does not reach the other peer reliably.\n // See: https://bugs.chromium.org/p/webrtc/issues/detail?id=8419\n let canSendMaxMessageSize = 65536;\n if (browserDetails.browser === 'firefox') {\n if (browserDetails.version < 57) {\n if (remoteIsFirefox === -1) {\n // FF < 57 will send in 16 KiB chunks using the deprecated PPID\n // fragmentation.\n canSendMaxMessageSize = 16384;\n } else {\n // However, other FF (and RAWRTC) can reassemble PPID-fragmented\n // messages. Thus, supporting ~2 GiB when sending.\n canSendMaxMessageSize = 2147483637;\n }\n } else if (browserDetails.version < 60) {\n // Currently, all FF >= 57 will reset the remote maximum message size\n // to the default value when a data channel is created at a later\n // stage. :(\n // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831\n canSendMaxMessageSize =\n browserDetails.version === 57 ? 65535 : 65536;\n } else {\n // FF >= 60 supports sending ~2 GiB\n canSendMaxMessageSize = 2147483637;\n }\n }\n return canSendMaxMessageSize;\n };\n\n const getMaxMessageSize = function(description, remoteIsFirefox) {\n // Note: 65536 bytes is the default value from the SDP spec. Also,\n // every implementation we know supports receiving 65536 bytes.\n let maxMessageSize = 65536;\n\n // FF 57 has a slightly incorrect default remote max message size, so\n // we need to adjust it here to avoid a failure when sending.\n // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1425697\n if (browserDetails.browser === 'firefox'\n && browserDetails.version === 57) {\n maxMessageSize = 65535;\n }\n\n const match = SDPUtils.matchPrefix(description.sdp,\n 'a=max-message-size:');\n if (match.length > 0) {\n maxMessageSize = parseInt(match[0].substr(19), 10);\n } else if (browserDetails.browser === 'firefox' &&\n remoteIsFirefox !== -1) {\n // If the maximum message size is not present in the remote SDP and\n // both local and remote are Firefox, the remote peer can receive\n // ~2 GiB.\n maxMessageSize = 2147483637;\n }\n return maxMessageSize;\n };\n\n const origSetRemoteDescription =\n window.RTCPeerConnection.prototype.setRemoteDescription;\n window.RTCPeerConnection.prototype.setRemoteDescription =\n function setRemoteDescription() {\n this._sctp = null;\n // Chrome decided to not expose .sctp in plan-b mode.\n // As usual, adapter.js has to do an 'ugly worakaround'\n // to cover up the mess.\n if (browserDetails.browser === 'chrome' && browserDetails.version >= 76) {\n const {sdpSemantics} = this.getConfiguration();\n if (sdpSemantics === 'plan-b') {\n Object.defineProperty(this, 'sctp', {\n get() {\n return typeof this._sctp === 'undefined' ? null : this._sctp;\n },\n enumerable: true,\n configurable: true,\n });\n }\n }\n\n if (sctpInDescription(arguments[0])) {\n // Check if the remote is FF.\n const isFirefox = getRemoteFirefoxVersion(arguments[0]);\n\n // Get the maximum message size the local peer is capable of sending\n const canSendMMS = getCanSendMaxMessageSize(isFirefox);\n\n // Get the maximum message size of the remote peer.\n const remoteMMS = getMaxMessageSize(arguments[0], isFirefox);\n\n // Determine final maximum message size\n let maxMessageSize;\n if (canSendMMS === 0 && remoteMMS === 0) {\n maxMessageSize = Number.POSITIVE_INFINITY;\n } else if (canSendMMS === 0 || remoteMMS === 0) {\n maxMessageSize = Math.max(canSendMMS, remoteMMS);\n } else {\n maxMessageSize = Math.min(canSendMMS, remoteMMS);\n }\n\n // Create a dummy RTCSctpTransport object and the 'maxMessageSize'\n // attribute.\n const sctp = {};\n Object.defineProperty(sctp, 'maxMessageSize', {\n get() {\n return maxMessageSize;\n }\n });\n this._sctp = sctp;\n }\n\n return origSetRemoteDescription.apply(this, arguments);\n };\n}\n\nexport function shimSendThrowTypeError(window) {\n if (!(window.RTCPeerConnection &&\n 'createDataChannel' in window.RTCPeerConnection.prototype)) {\n return;\n }\n\n // Note: Although Firefox >= 57 has a native implementation, the maximum\n // message size can be reset for all data channels at a later stage.\n // See: https://bugzilla.mozilla.org/show_bug.cgi?id=1426831\n\n function wrapDcSend(dc, pc) {\n const origDataChannelSend = dc.send;\n dc.send = function send() {\n const data = arguments[0];\n const length = data.length || data.size || data.byteLength;\n if (dc.readyState === 'open' &&\n pc.sctp && length > pc.sctp.maxMessageSize) {\n throw new TypeError('Message too large (can send a maximum of ' +\n pc.sctp.maxMessageSize + ' bytes)');\n }\n return origDataChannelSend.apply(dc, arguments);\n };\n }\n const origCreateDataChannel =\n window.RTCPeerConnection.prototype.createDataChannel;\n window.RTCPeerConnection.prototype.createDataChannel =\n function createDataChannel() {\n const dataChannel = origCreateDataChannel.apply(this, arguments);\n wrapDcSend(dataChannel, this);\n return dataChannel;\n };\n utils.wrapPeerConnectionEvent(window, 'datachannel', e => {\n wrapDcSend(e.channel, e.target);\n return e;\n });\n}\n\n\n/* shims RTCConnectionState by pretending it is the same as iceConnectionState.\n * See https://bugs.chromium.org/p/webrtc/issues/detail?id=6145#c12\n * for why this is a valid hack in Chrome. In Firefox it is slightly incorrect\n * since DTLS failures would be hidden. See\n * https://bugzilla.mozilla.org/show_bug.cgi?id=1265827\n * for the Firefox tracking bug.\n */\nexport function shimConnectionState(window) {\n if (!window.RTCPeerConnection ||\n 'connectionState' in window.RTCPeerConnection.prototype) {\n return;\n }\n const proto = window.RTCPeerConnection.prototype;\n Object.defineProperty(proto, 'connectionState', {\n get() {\n return {\n completed: 'connected',\n checking: 'connecting'\n }[this.iceConnectionState] || this.iceConnectionState;\n },\n enumerable: true,\n configurable: true\n });\n Object.defineProperty(proto, 'onconnectionstatechange', {\n get() {\n return this._onconnectionstatechange || null;\n },\n set(cb) {\n if (this._onconnectionstatechange) {\n this.removeEventListener('connectionstatechange',\n this._onconnectionstatechange);\n delete this._onconnectionstatechange;\n }\n if (cb) {\n this.addEventListener('connectionstatechange',\n this._onconnectionstatechange = cb);\n }\n },\n enumerable: true,\n configurable: true\n });\n\n ['setLocalDescription', 'setRemoteDescription'].forEach((method) => {\n const origMethod = proto[method];\n proto[method] = function() {\n if (!this._connectionstatechangepoly) {\n this._connectionstatechangepoly = e => {\n const pc = e.target;\n if (pc._lastConnectionState !== pc.connectionState) {\n pc._lastConnectionState = pc.connectionState;\n const newEvent = new Event('connectionstatechange', e);\n pc.dispatchEvent(newEvent);\n }\n return e;\n };\n this.addEventListener('iceconnectionstatechange',\n this._connectionstatechangepoly);\n }\n return origMethod.apply(this, arguments);\n };\n });\n}\n\nexport function removeExtmapAllowMixed(window, browserDetails) {\n /* remove a=extmap-allow-mixed for webrtc.org < M71 */\n if (!window.RTCPeerConnection) {\n return;\n }\n if (browserDetails.browser === 'chrome' && browserDetails.version >= 71) {\n return;\n }\n if (browserDetails.browser === 'safari' && browserDetails.version >= 605) {\n return;\n }\n const nativeSRD = window.RTCPeerConnection.prototype.setRemoteDescription;\n window.RTCPeerConnection.prototype.setRemoteDescription =\n function setRemoteDescription(desc) {\n if (desc && desc.sdp && desc.sdp.indexOf('\\na=extmap-allow-mixed') !== -1) {\n const sdp = desc.sdp.split('\\n').filter((line) => {\n return line.trim() !== 'a=extmap-allow-mixed';\n }).join('\\n');\n // Safari enforces read-only-ness of RTCSessionDescription fields.\n if (window.RTCSessionDescription &&\n desc instanceof window.RTCSessionDescription) {\n arguments[0] = new window.RTCSessionDescription({\n type: desc.type,\n sdp,\n });\n } else {\n desc.sdp = sdp;\n }\n }\n return nativeSRD.apply(this, arguments);\n };\n}\n\nexport function shimAddIceCandidateNullOrEmpty(window, browserDetails) {\n // Support for addIceCandidate(null or undefined)\n // as well as addIceCandidate({candidate: \"\", ...})\n // https://bugs.chromium.org/p/chromium/issues/detail?id=978582\n // Note: must be called before other polyfills which change the signature.\n if (!(window.RTCPeerConnection && window.RTCPeerConnection.prototype)) {\n return;\n }\n const nativeAddIceCandidate =\n window.RTCPeerConnection.prototype.addIceCandidate;\n if (!nativeAddIceCandidate || nativeAddIceCandidate.length === 0) {\n return;\n }\n window.RTCPeerConnection.prototype.addIceCandidate =\n function addIceCandidate() {\n if (!arguments[0]) {\n if (arguments[1]) {\n arguments[1].apply(null);\n }\n return Promise.resolve();\n }\n // Firefox 68+ emits and processes {candidate: \"\", ...}, ignore\n // in older versions.\n // Native support for ignoring exists for Chrome M77+.\n // Safari ignores as well, exact version unknown but works in the same\n // version that also ignores addIceCandidate(null).\n if (((browserDetails.browser === 'chrome' && browserDetails.version < 78)\n || (browserDetails.browser === 'firefox'\n && browserDetails.version < 68)\n || (browserDetails.browser === 'safari'))\n && arguments[0] && arguments[0].candidate === '') {\n return Promise.resolve();\n }\n return nativeAddIceCandidate.apply(this, arguments);\n };\n}\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\nimport * as utils from './utils';\n\n // Browser shims.\nimport * as chromeShim from './chrome/chrome_shim';\nimport * as edgeShim from './edge/edge_shim';\nimport * as firefoxShim from './firefox/firefox_shim';\nimport * as safariShim from './safari/safari_shim';\nimport * as commonShim from './common_shim';\n\n// Shimming starts here.\nexport function adapterFactory({window} = {}, options = {\n shimChrome: true,\n shimFirefox: true,\n shimEdge: true,\n shimSafari: true,\n}) {\n // Utils.\n const logging = utils.log;\n const browserDetails = utils.detectBrowser(window);\n\n const adapter = {\n browserDetails,\n commonShim,\n extractVersion: utils.extractVersion,\n disableLog: utils.disableLog,\n disableWarnings: utils.disableWarnings\n };\n\n // Shim browser if found.\n switch (browserDetails.browser) {\n case 'chrome':\n if (!chromeShim || !chromeShim.shimPeerConnection ||\n !options.shimChrome) {\n logging('Chrome shim is not included in this adapter release.');\n return adapter;\n }\n if (browserDetails.version === null) {\n logging('Chrome shim can not determine version, not shimming.');\n return adapter;\n }\n logging('adapter.js shimming chrome.');\n // Export to the adapter global object visible in the browser.\n adapter.browserShim = chromeShim;\n\n // Must be called before shimPeerConnection.\n commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);\n\n chromeShim.shimGetUserMedia(window, browserDetails);\n chromeShim.shimMediaStream(window, browserDetails);\n chromeShim.shimPeerConnection(window, browserDetails);\n chromeShim.shimOnTrack(window, browserDetails);\n chromeShim.shimAddTrackRemoveTrack(window, browserDetails);\n chromeShim.shimGetSendersWithDtmf(window, browserDetails);\n chromeShim.shimGetStats(window, browserDetails);\n chromeShim.shimSenderReceiverGetStats(window, browserDetails);\n chromeShim.fixNegotiationNeeded(window, browserDetails);\n\n commonShim.shimRTCIceCandidate(window, browserDetails);\n commonShim.shimConnectionState(window, browserDetails);\n commonShim.shimMaxMessageSize(window, browserDetails);\n commonShim.shimSendThrowTypeError(window, browserDetails);\n commonShim.removeExtmapAllowMixed(window, browserDetails);\n break;\n case 'firefox':\n if (!firefoxShim || !firefoxShim.shimPeerConnection ||\n !options.shimFirefox) {\n logging('Firefox shim is not included in this adapter release.');\n return adapter;\n }\n logging('adapter.js shimming firefox.');\n // Export to the adapter global object visible in the browser.\n adapter.browserShim = firefoxShim;\n\n // Must be called before shimPeerConnection.\n commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);\n\n firefoxShim.shimGetUserMedia(window, browserDetails);\n firefoxShim.shimPeerConnection(window, browserDetails);\n firefoxShim.shimOnTrack(window, browserDetails);\n firefoxShim.shimRemoveStream(window, browserDetails);\n firefoxShim.shimSenderGetStats(window, browserDetails);\n firefoxShim.shimReceiverGetStats(window, browserDetails);\n firefoxShim.shimRTCDataChannel(window, browserDetails);\n firefoxShim.shimAddTransceiver(window, browserDetails);\n firefoxShim.shimGetParameters(window, browserDetails);\n firefoxShim.shimCreateOffer(window, browserDetails);\n firefoxShim.shimCreateAnswer(window, browserDetails);\n\n commonShim.shimRTCIceCandidate(window, browserDetails);\n commonShim.shimConnectionState(window, browserDetails);\n commonShim.shimMaxMessageSize(window, browserDetails);\n commonShim.shimSendThrowTypeError(window, browserDetails);\n break;\n case 'edge':\n if (!edgeShim || !edgeShim.shimPeerConnection || !options.shimEdge) {\n logging('MS edge shim is not included in this adapter release.');\n return adapter;\n }\n logging('adapter.js shimming edge.');\n // Export to the adapter global object visible in the browser.\n adapter.browserShim = edgeShim;\n\n edgeShim.shimGetUserMedia(window, browserDetails);\n edgeShim.shimGetDisplayMedia(window, browserDetails);\n edgeShim.shimPeerConnection(window, browserDetails);\n edgeShim.shimReplaceTrack(window, browserDetails);\n\n // the edge shim implements the full RTCIceCandidate object.\n\n commonShim.shimMaxMessageSize(window, browserDetails);\n commonShim.shimSendThrowTypeError(window, browserDetails);\n break;\n case 'safari':\n if (!safariShim || !options.shimSafari) {\n logging('Safari shim is not included in this adapter release.');\n return adapter;\n }\n logging('adapter.js shimming safari.');\n // Export to the adapter global object visible in the browser.\n adapter.browserShim = safariShim;\n\n // Must be called before shimCallbackAPI.\n commonShim.shimAddIceCandidateNullOrEmpty(window, browserDetails);\n\n safariShim.shimRTCIceServerUrls(window, browserDetails);\n safariShim.shimCreateOfferLegacy(window, browserDetails);\n safariShim.shimCallbacksAPI(window, browserDetails);\n safariShim.shimLocalStreamsAPI(window, browserDetails);\n safariShim.shimRemoteStreamsAPI(window, browserDetails);\n safariShim.shimTrackEventTransceiver(window, browserDetails);\n safariShim.shimGetUserMedia(window, browserDetails);\n safariShim.shimAudioContext(window, browserDetails);\n\n commonShim.shimRTCIceCandidate(window, browserDetails);\n commonShim.shimMaxMessageSize(window, browserDetails);\n commonShim.shimSendThrowTypeError(window, browserDetails);\n commonShim.removeExtmapAllowMixed(window, browserDetails);\n break;\n default:\n logging('Unsupported browser!');\n break;\n }\n\n return adapter;\n}\n","/*\n * Copyright (c) 2016 The WebRTC project authors. All Rights Reserved.\n *\n * Use of this source code is governed by a BSD-style license\n * that can be found in the LICENSE file in the root of the source\n * tree.\n */\n/* eslint-env node */\n\n'use strict';\n\nimport {adapterFactory} from './adapter_factory.js';\n\nconst adapter =\n adapterFactory({window: typeof window === 'undefined' ? undefined : window});\nexport default adapter;\n","import webRTCAdapter from \"webrtc-adapter\";\n\nexport { webRTCAdapter };\n","import { webRTCAdapter } from './adapter';\n\nexport const Supports = new class {\n readonly isIOS = ['iPad', 'iPhone', 'iPod'].includes(navigator.platform);\n readonly supportedBrowsers = ['firefox', 'chrome', 'safari'];\n\n readonly minFirefoxVersion = 59;\n readonly minChromeVersion = 72;\n readonly minSafariVersion = 605;\n\n isWebRTCSupported(): boolean {\n return typeof RTCPeerConnection !== 'undefined';\n }\n\n isBrowserSupported(): boolean {\n const browser = this.getBrowser();\n const version = this.getVersion();\n\n const validBrowser = this.supportedBrowsers.includes(browser);\n\n if (!validBrowser) return false;\n\n if (browser === 'chrome') return version >= this.minChromeVersion;\n if (browser === 'firefox') return version >= this.minFirefoxVersion;\n if (browser === 'safari') return !this.isIOS && version >= this.minSafariVersion;\n\n return false;\n }\n\n getBrowser(): string {\n return webRTCAdapter.browserDetails.browser;\n }\n\n getVersion(): number {\n return webRTCAdapter.browserDetails.version || 0;\n }\n\n isUnifiedPlanSupported(): boolean {\n const browser = this.getBrowser();\n const version = webRTCAdapter.browserDetails.version || 0;\n\n if (browser === 'chrome' && version < 72) return false;\n if (browser === 'firefox' && version >= 59) return true;\n if (!window.RTCRtpTransceiver || !('currentDirection' in RTCRtpTransceiver.prototype)) return false;\n\n let tempPc: RTCPeerConnection;\n let supported = false;\n\n try {\n tempPc = new RTCPeerConnection();\n tempPc.addTransceiver('audio');\n supported = true;\n } catch (e) { }\n finally {\n if (tempPc) {\n tempPc.close();\n }\n }\n\n return supported;\n }\n\n toString(): string {\n return `Supports: \n browser:${this.getBrowser()} \n version:${this.getVersion()} \n isIOS:${this.isIOS} \n isWebRTCSupported:${this.isWebRTCSupported()} \n isBrowserSupported:${this.isBrowserSupported()} \n isUnifiedPlanSupported:${this.isUnifiedPlanSupported()}`;\n }\n}","import * as BinaryPack from \"peerjs-js-binarypack\";\nimport { Supports } from './supports';\nimport { UtilSupportsObj } from '..';\n\nconst DEFAULT_CONFIG = {\n iceServers: [\n { urls: \"stun:stun.l.google.com:19302\" },\n { urls: \"turn:0.peerjs.com:3478\", username: \"peerjs\", credential: \"peerjsp\" }\n ],\n sdpSemantics: \"unified-plan\"\n};\n\nexport const util = new class {\n noop(): void { }\n\n readonly CLOUD_HOST = \"0.peerjs.com\";\n readonly CLOUD_PORT = 443;\n\n // Browsers that need chunking:\n readonly chunkedBrowsers = { Chrome: 1, chrome: 1 };\n readonly chunkedMTU = 16300; // The original 60000 bytes setting does not work when sending data from Firefox to Chrome, which is \"cut off\" after 16384 bytes and delivered individually.\n\n // Returns browser-agnostic default config\n readonly defaultConfig = DEFAULT_CONFIG;\n\n readonly browser = Supports.getBrowser();\n readonly browserVersion = Supports.getVersion();\n\n // Lists which features are supported\n readonly supports = (function () {\n const supported: UtilSupportsObj = {\n browser: Supports.isBrowserSupported(),\n webRTC: Supports.isWebRTCSupported(),\n audioVideo: false,\n data: false,\n binaryBlob: false,\n reliable: false,\n };\n\n if (!supported.webRTC) return supported;\n\n let pc: RTCPeerConnection;\n\n try {\n pc = new RTCPeerConnection(DEFAULT_CONFIG);\n\n supported.audioVideo = true;\n\n let dc: RTCDataChannel;\n\n try {\n dc = pc.createDataChannel(\"_PEERJSTEST\", { ordered: true });\n supported.data = true;\n supported.reliable = !!dc.ordered;\n\n // Binary test\n try {\n dc.binaryType = \"blob\";\n supported.binaryBlob = !Supports.isIOS;\n } catch (e) {\n }\n } catch (e) {\n } finally {\n if (dc) {\n dc.close();\n }\n }\n } catch (e) {\n } finally {\n if (pc) {\n pc.close();\n }\n }\n\n return supported;\n })();\n\n // Ensure alphanumeric ids\n validateId(id: string): boolean {\n // Allow empty ids\n return !id || /^[A-Za-z0-9]+(?:[ _-][A-Za-z0-9]+)*$/.test(id);\n }\n\n pack = BinaryPack.pack;\n unpack = BinaryPack.unpack;\n\n // Binary stuff\n\n private _dataCount: number = 1;\n\n chunk(blob: Blob): { __peerData: number, n: number, total: number, data: Blob }[] {\n const chunks = [];\n const size = blob.size;\n const total = Math.ceil(size / util.chunkedMTU);\n\n let index = 0;\n let start = 0;\n\n while (start < size) {\n const end = Math.min(size, start + util.chunkedMTU);\n const b = blob.slice(start, end);\n\n const chunk = {\n __peerData: this._dataCount,\n n: index,\n data: b,\n total,\n };\n\n chunks.push(chunk);\n\n start = end;\n index++;\n }\n\n this._dataCount++;\n\n return chunks;\n }\n\n blobToArrayBuffer(blob: Blob, cb: (arg: ArrayBuffer | null) => void): FileReader {\n const fr = new FileReader();\n\n fr.onload = function (evt) {\n if (evt.target) {\n cb(evt.target.result as ArrayBuffer);\n }\n };\n\n fr.readAsArrayBuffer(blob);\n\n return fr;\n }\n\n binaryStringToArrayBuffer(binary: string): ArrayBuffer | SharedArrayBuffer {\n const byteArray = new Uint8Array(binary.length);\n\n for (let i = 0; i < binary.length; i++) {\n byteArray[i] = binary.charCodeAt(i) & 0xff;\n }\n\n return byteArray.buffer;\n }\n\n randomToken(): string {\n return Math.random()\n .toString(36)\n .substr(2);\n }\n\n isSecure(): boolean {\n return location.protocol === \"https:\";\n }\n}\n","'use strict';\n\nvar has = Object.prototype.hasOwnProperty\n , prefix = '~';\n\n/**\n * Constructor to create a storage for our `EE` objects.\n * An `Events` instance is a plain object whose properties are event names.\n *\n * @constructor\n * @private\n */\nfunction Events() {}\n\n//\n// We try to not inherit from `Object.prototype`. In some engines creating an\n// instance in this way is faster than calling `Object.create(null)` directly.\n// If `Object.create(null)` is not supported we prefix the event names with a\n// character to make sure that the built-in object properties are not\n// overridden or used as an attack vector.\n//\nif (Object.create) {\n Events.prototype = Object.create(null);\n\n //\n // This hack is needed because the `__proto__` property is still inherited in\n // some old browsers like Android 4, iPhone 5.1, Opera 11 and Safari 5.\n //\n if (!new Events().__proto__) prefix = false;\n}\n\n/**\n * Representation of a single event listener.\n *\n * @param {Function} fn The listener function.\n * @param {*} context The context to invoke the listener with.\n * @param {Boolean} [once=false] Specify if the listener is a one-time listener.\n * @constructor\n * @private\n */\nfunction EE(fn, context, once) {\n this.fn = fn;\n this.context = context;\n this.once = once || false;\n}\n\n/**\n * Add a listener for a given event.\n *\n * @param {EventEmitter} emitter Reference to the `EventEmitter` instance.\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn The listener function.\n * @param {*} context The context to invoke the listener with.\n * @param {Boolean} once Specify if the listener is a one-time listener.\n * @returns {EventEmitter}\n * @private\n */\nfunction addListener(emitter, event, fn, context, once) {\n if (typeof fn !== 'function') {\n throw new TypeError('The listener must be a function');\n }\n\n var listener = new EE(fn, context || emitter, once)\n , evt = prefix ? prefix + event : event;\n\n if (!emitter._events[evt]) emitter._events[evt] = listener, emitter._eventsCount++;\n else if (!emitter._events[evt].fn) emitter._events[evt].push(listener);\n else emitter._events[evt] = [emitter._events[evt], listener];\n\n return emitter;\n}\n\n/**\n * Clear event by name.\n *\n * @param {EventEmitter} emitter Reference to the `EventEmitter` instance.\n * @param {(String|Symbol)} evt The Event name.\n * @private\n */\nfunction clearEvent(emitter, evt) {\n if (--emitter._eventsCount === 0) emitter._events = new Events();\n else delete emitter._events[evt];\n}\n\n/**\n * Minimal `EventEmitter` interface that is molded against the Node.js\n * `EventEmitter` interface.\n *\n * @constructor\n * @public\n */\nfunction EventEmitter() {\n this._events = new Events();\n this._eventsCount = 0;\n}\n\n/**\n * Return an array listing the events for which the emitter has registered\n * listeners.\n *\n * @returns {Array}\n * @public\n */\nEventEmitter.prototype.eventNames = function eventNames() {\n var names = []\n , events\n , name;\n\n if (this._eventsCount === 0) return names;\n\n for (name in (events = this._events)) {\n if (has.call(events, name)) names.push(prefix ? name.slice(1) : name);\n }\n\n if (Object.getOwnPropertySymbols) {\n return names.concat(Object.getOwnPropertySymbols(events));\n }\n\n return names;\n};\n\n/**\n * Return the listeners registered for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @returns {Array} The registered listeners.\n * @public\n */\nEventEmitter.prototype.listeners = function listeners(event) {\n var evt = prefix ? prefix + event : event\n , handlers = this._events[evt];\n\n if (!handlers) return [];\n if (handlers.fn) return [handlers.fn];\n\n for (var i = 0, l = handlers.length, ee = new Array(l); i < l; i++) {\n ee[i] = handlers[i].fn;\n }\n\n return ee;\n};\n\n/**\n * Return the number of listeners listening to a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @returns {Number} The number of listeners.\n * @public\n */\nEventEmitter.prototype.listenerCount = function listenerCount(event) {\n var evt = prefix ? prefix + event : event\n , listeners = this._events[evt];\n\n if (!listeners) return 0;\n if (listeners.fn) return 1;\n return listeners.length;\n};\n\n/**\n * Calls each of the listeners registered for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @returns {Boolean} `true` if the event had listeners, else `false`.\n * @public\n */\nEventEmitter.prototype.emit = function emit(event, a1, a2, a3, a4, a5) {\n var evt = prefix ? prefix + event : event;\n\n if (!this._events[evt]) return false;\n\n var listeners = this._events[evt]\n , len = arguments.length\n , args\n , i;\n\n if (listeners.fn) {\n if (listeners.once) this.removeListener(event, listeners.fn, undefined, true);\n\n switch (len) {\n case 1: return listeners.fn.call(listeners.context), true;\n case 2: return listeners.fn.call(listeners.context, a1), true;\n case 3: return listeners.fn.call(listeners.context, a1, a2), true;\n case 4: return listeners.fn.call(listeners.context, a1, a2, a3), true;\n case 5: return listeners.fn.call(listeners.context, a1, a2, a3, a4), true;\n case 6: return listeners.fn.call(listeners.context, a1, a2, a3, a4, a5), true;\n }\n\n for (i = 1, args = new Array(len -1); i < len; i++) {\n args[i - 1] = arguments[i];\n }\n\n listeners.fn.apply(listeners.context, args);\n } else {\n var length = listeners.length\n , j;\n\n for (i = 0; i < length; i++) {\n if (listeners[i].once) this.removeListener(event, listeners[i].fn, undefined, true);\n\n switch (len) {\n case 1: listeners[i].fn.call(listeners[i].context); break;\n case 2: listeners[i].fn.call(listeners[i].context, a1); break;\n case 3: listeners[i].fn.call(listeners[i].context, a1, a2); break;\n case 4: listeners[i].fn.call(listeners[i].context, a1, a2, a3); break;\n default:\n if (!args) for (j = 1, args = new Array(len -1); j < len; j++) {\n args[j - 1] = arguments[j];\n }\n\n listeners[i].fn.apply(listeners[i].context, args);\n }\n }\n }\n\n return true;\n};\n\n/**\n * Add a listener for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn The listener function.\n * @param {*} [context=this] The context to invoke the listener with.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.on = function on(event, fn, context) {\n return addListener(this, event, fn, context, false);\n};\n\n/**\n * Add a one-time listener for a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn The listener function.\n * @param {*} [context=this] The context to invoke the listener with.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.once = function once(event, fn, context) {\n return addListener(this, event, fn, context, true);\n};\n\n/**\n * Remove the listeners of a given event.\n *\n * @param {(String|Symbol)} event The event name.\n * @param {Function} fn Only remove the listeners that match this function.\n * @param {*} context Only remove the listeners that have this context.\n * @param {Boolean} once Only remove one-time listeners.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.removeListener = function removeListener(event, fn, context, once) {\n var evt = prefix ? prefix + event : event;\n\n if (!this._events[evt]) return this;\n if (!fn) {\n clearEvent(this, evt);\n return this;\n }\n\n var listeners = this._events[evt];\n\n if (listeners.fn) {\n if (\n listeners.fn === fn &&\n (!once || listeners.once) &&\n (!context || listeners.context === context)\n ) {\n clearEvent(this, evt);\n }\n } else {\n for (var i = 0, events = [], length = listeners.length; i < length; i++) {\n if (\n listeners[i].fn !== fn ||\n (once && !listeners[i].once) ||\n (context && listeners[i].context !== context)\n ) {\n events.push(listeners[i]);\n }\n }\n\n //\n // Reset the array, or remove it completely if we have no more listeners.\n //\n if (events.length) this._events[evt] = events.length === 1 ? events[0] : events;\n else clearEvent(this, evt);\n }\n\n return this;\n};\n\n/**\n * Remove all listeners, or those of the specified event.\n *\n * @param {(String|Symbol)} [event] The event name.\n * @returns {EventEmitter} `this`.\n * @public\n */\nEventEmitter.prototype.removeAllListeners = function removeAllListeners(event) {\n var evt;\n\n if (event) {\n evt = prefix ? prefix + event : event;\n if (this._events[evt]) clearEvent(this, evt);\n } else {\n this._events = new Events();\n this._eventsCount = 0;\n }\n\n return this;\n};\n\n//\n// Alias methods names because people roll like that.\n//\nEventEmitter.prototype.off = EventEmitter.prototype.removeListener;\nEventEmitter.prototype.addListener = EventEmitter.prototype.on;\n\n//\n// Expose the prefix.\n//\nEventEmitter.prefixed = prefix;\n\n//\n// Allow `EventEmitter` to be imported as module namespace.\n//\nEventEmitter.EventEmitter = EventEmitter;\n\n//\n// Expose the module.\n//\nif ('undefined' !== typeof module) {\n module.exports = EventEmitter;\n}\n","const LOG_PREFIX = 'PeerJS: ';\n\n/*\nPrints log messages depending on the debug level passed in. Defaults to 0.\n0 Prints no logs.\n1 Prints only errors.\n2 Prints errors and warnings.\n3 Prints all logs.\n*/\nexport enum LogLevel {\n Disabled,\n Errors,\n Warnings,\n All\n}\n\nclass Logger {\n private _logLevel = LogLevel.Disabled;\n\n get logLevel(): LogLevel { return this._logLevel; }\n\n set logLevel(logLevel: LogLevel) { this._logLevel = logLevel; }\n\n log(...args: any[]) {\n if (this._logLevel >= LogLevel.All) {\n this._print(LogLevel.All, ...args);\n }\n }\n\n warn(...args: any[]) {\n if (this._logLevel >= LogLevel.Warnings) {\n this._print(LogLevel.Warnings, ...args);\n }\n }\n\n error(...args: any[]) {\n if (this._logLevel >= LogLevel.Errors) {\n this._print(LogLevel.Errors, ...args);\n }\n }\n\n setLogFunction(fn: (logLevel: LogLevel, ..._: any[]) => void): void {\n this._print = fn;\n }\n\n private _print(logLevel: LogLevel, ...rest: any[]): void {\n const copy = [LOG_PREFIX, ...rest];\n\n for (let i in copy) {\n if (copy[i] instanceof Error) {\n copy[i] = \"(\" + copy[i].name + \") \" + copy[i].message;\n\n }\n }\n\n if (logLevel >= LogLevel.All) {\n console.log(...copy);\n } else if (logLevel >= LogLevel.Warnings) {\n console.warn(\"WARNING\", ...copy);\n } else if (logLevel >= LogLevel.Errors) {\n console.error(\"ERROR\", ...copy);\n }\n }\n}\n\nexport default new Logger();","export enum ConnectionEventType {\n Open = \"open\",\n Stream = \"stream\",\n Data = \"data\",\n Close = \"close\",\n Error = \"error\",\n IceStateChanged = \"iceStateChanged\"\n}\n\nexport enum ConnectionType {\n Data = \"data\",\n Media = \"media\"\n}\n\nexport enum PeerEventType {\n Open = \"open\",\n Close = \"close\",\n Connection = \"connection\",\n Call = \"call\",\n Disconnected = \"disconnected\",\n Error = \"error\"\n}\n\nexport enum PeerErrorType {\n BrowserIncompatible = \"browser-incompatible\",\n Disconnected = \"disconnected\",\n InvalidID = \"invalid-id\",\n InvalidKey = \"invalid-key\",\n Network = \"network\",\n PeerUnavailable = \"peer-unavailable\",\n SslUnavailable = \"ssl-unavailable\",\n ServerError = \"server-error\",\n SocketError = \"socket-error\",\n SocketClosed = \"socket-closed\",\n UnavailableID = \"unavailable-id\",\n WebRTC = \"webrtc\"\n}\n\nexport enum SerializationType {\n Binary = \"binary\",\n BinaryUTF8 = \"binary-utf8\",\n JSON = \"json\"\n}\n\nexport enum SocketEventType {\n Message = \"message\",\n Disconnected = \"disconnected\",\n Error = \"error\",\n Close = \"close\"\n}\n\nexport enum ServerMessageType {\n Heartbeat = \"HEARTBEAT\",\n Candidate = \"CANDIDATE\",\n Offer = \"OFFER\",\n Answer = \"ANSWER\",\n Open = \"OPEN\", // The connection to the server is open.\n Error = \"ERROR\", // Server error.\n IdTaken = \"ID-TAKEN\", // The selected ID is taken.\n InvalidKey = \"INVALID-KEY\", // The given API key cannot be found.\n Leave = \"LEAVE\", // Another peer has closed its connection to this peer.\n Expire = \"EXPIRE\" // The offer sent to a peer has expired without response.\n\n}","import { EventEmitter } from \"eventemitter3\";\nimport logger from \"./logger\";\nimport { SocketEventType, ServerMessageType } from \"./enums\";\n\n/**\n * An abstraction on top of WebSockets to provide fastest\n * possible connection for peers.\n */\nexport class Socket extends EventEmitter {\n private _disconnected: boolean = true;\n private _id?: string;\n private _messagesQueue: Array<object> = [];\n private _socket?: WebSocket;\n private _wsPingTimer?: any;\n private readonly _baseUrl: string;\n\n constructor(\n secure: any,\n host: string,\n port: number,\n path: string,\n key: string,\n private readonly pingInterval: number = 5000,\n ) {\n super();\n\n const wsProtocol = secure ? \"wss://\" : \"ws://\";\n\n this._baseUrl = wsProtocol + host + \":\" + port + path + \"peerjs?key=\" + key;\n }\n\n start(id: string, token: string): void {\n this._id = id;\n\n const wsUrl = `${this._baseUrl}&id=${id}&token=${token}`;\n\n if (!!this._socket || !this._disconnected) {\n return;\n }\n\n this._socket = new WebSocket(wsUrl);\n this._disconnected = false;\n\n this._socket.onmessage = (event) => {\n let data;\n\n try {\n data = JSON.parse(event.data);\n logger.log(\"Server message received:\", data);\n } catch (e) {\n logger.log(\"Invalid server message\", event.data);\n return;\n }\n\n this.emit(SocketEventType.Message, data);\n };\n\n this._socket.onclose = (event) => {\n if (this._disconnected) {\n return;\n }\n\n logger.log(\"Socket closed.\", event);\n\n this._cleanup();\n this._disconnected = true;\n\n this.emit(SocketEventType.Disconnected);\n };\n\n // Take care of the queue of connections if necessary and make sure Peer knows\n // socket is open.\n this._socket.onopen = () => {\n if (this._disconnected) {\n return;\n }\n\n this._sendQueuedMessages();\n\n logger.log(\"Socket open\");\n\n this._scheduleHeartbeat();\n };\n }\n\n private _scheduleHeartbeat(): void {\n this._wsPingTimer = setTimeout(() => {\n this._sendHeartbeat();\n }, this.pingInterval);\n }\n\n private _sendHeartbeat(): void {\n if (!this._wsOpen()) {\n logger.log(`Cannot send heartbeat, because socket closed`);\n return;\n }\n\n const message = JSON.stringify({ type: ServerMessageType.Heartbeat });\n\n this._socket!.send(message);\n\n this._scheduleHeartbeat();\n }\n\n /** Is the websocket currently open? */\n private _wsOpen(): boolean {\n return !!this._socket && this._socket.readyState === 1;\n }\n\n /** Send queued messages. */\n private _sendQueuedMessages(): void {\n //Create copy of queue and clear it,\n //because send method push the message back to queue if smth will go wrong\n const copiedQueue = [...this._messagesQueue];\n this._messagesQueue = [];\n\n for (const message of copiedQueue) {\n this.send(message);\n }\n }\n\n /** Exposed send for DC & Peer. */\n send(data: any): void {\n if (this._disconnected) {\n return;\n }\n\n // If we didn't get an ID yet, we can't yet send anything so we should queue\n // up these messages.\n if (!this._id) {\n this._messagesQueue.push(data);\n return;\n }\n\n if (!data.type) {\n this.emit(SocketEventType.Error, \"Invalid message\");\n return;\n }\n\n if (!this._wsOpen()) {\n return;\n }\n\n const message = JSON.stringify(data);\n\n this._socket!.send(message);\n }\n\n close(): void {\n if (this._disconnected) {\n return;\n }\n\n this._cleanup();\n\n this._disconnected = true;\n }\n\n private _cleanup(): void {\n if (this._socket) {\n this._socket.onopen = this._socket.onmessage = this._socket.onclose = null;\n this._socket.close();\n this._socket = undefined;\n }\n\n clearTimeout(this._wsPingTimer!);\n }\n}\n","import { util } from \"./util\";\nimport logger from \"./logger\";\nimport { MediaConnection } from \"./mediaconnection\";\nimport { DataConnection } from \"./dataconnection\";\nimport { ConnectionType, PeerErrorType, ConnectionEventType, ServerMessageType } from \"./enums\";\nimport { BaseConnection } from \"./baseconnection\";\n\n/**\n * Manages all negotiations between Peers.\n */\nexport class Negotiator {\n constructor(readonly connection: BaseConnection) { }\n\n /** Returns a PeerConnection object set up correctly (for data, media). */\n startConnection(options: any) {\n const peerConnection = this._startPeerConnection();\n\n // Set the connection's PC.\n this.connection.peerConnection = peerConnection;\n\n if (this.connection.type === ConnectionType.Media && options._stream) {\n this._addTracksToConnection(options._stream, peerConnection);\n }\n\n // What do we need to do now?\n if (options.originator) {\n if (this.connection.type === ConnectionType.Data) {\n const dataConnection = <DataConnection>this.connection;\n\n const config: RTCDataChannelInit = { ordered: !!options.reliable };\n\n const dataChannel = peerConnection.createDataChannel(\n dataConnection.label,\n config\n );\n dataConnection.initialize(dataChannel);\n }\n\n this._makeOffer();\n } else {\n this.handleSDP(\"OFFER\", options.sdp);\n }\n }\n\n /** Start a PC. */\n private _startPeerConnection(): RTCPeerConnection {\n logger.log(\"Creating RTCPeerConnection.\");\n\n const peerConnection = new RTCPeerConnection(this.connection.provider.options.config);\n\n this._setupListeners(peerConnection);\n\n return peerConnection;\n }\n\n /** Set up various WebRTC listeners. */\n private _setupListeners(\n peerConnection: RTCPeerConnection\n ) {\n const peerId = this.connection.peer;\n const connectionId = this.connection.connectionId;\n const connectionType = this.connection.type;\n const provider = this.connection.provider;\n\n // ICE CANDIDATES.\n logger.log(\"Listening for ICE candidates.\");\n\n peerConnection.onicecandidate = (evt) => {\n if (!evt.candidate || !evt.candidate.candidate) return;\n\n logger.log(`Received ICE candidates for ${peerId}:`, evt.candidate);\n\n provider.socket.send({\n type: ServerMessageType.Candidate,\n payload: {\n candidate: evt.candidate,\n type: connectionType,\n connectionId: connectionId\n },\n dst: peerId\n });\n };\n\n peerConnection.oniceconnectionstatechange = () => {\n switch (peerConnection.iceConnectionState) {\n case \"failed\":\n logger.log(\n \"iceConnectionState is failed, closing connections to \" +\n peerId\n );\n this.connection.emit(\n ConnectionEventType.Error,\n new Error(\"Negotiation of connection to \" + peerId + \" failed.\")\n );\n this.connection.close();\n break;\n case \"closed\":\n logger.log(\n \"iceConnectionState is closed, closing connections to \" +\n peerId\n );\n this.connection.emit(\n ConnectionEventType.Error,\n new Error(\"Connection to \" + peerId + \" closed.\")\n );\n this.connection.close();\n break;\n case \"disconnected\":\n logger.log(\n \"iceConnectionState changed to disconnected on the connection with \" +\n peerId\n );\n break;\n case \"completed\":\n peerConnection.onicecandidate = util.noop;\n break;\n }\n\n this.connection.emit(ConnectionEventType.IceStateChanged, peerConnection.iceConnectionState);\n };\n\n // DATACONNECTION.\n logger.log(\"Listening for data channel\");\n // Fired between offer and answer, so options should already be saved\n // in the options hash.\n peerConnection.ondatachannel = (evt) => {\n logger.log(\"Received data channel\");\n\n const dataChannel = evt.channel;\n const connection = <DataConnection>(\n provider.getConnection(peerId, connectionId)\n );\n\n connection.initialize(dataChannel);\n };\n\n // MEDIACONNECTION.\n logger.log(\"Listening for remote stream\");\n\n peerConnection.ontrack = (evt) => {\n logger.log(\"Received remote stream\");\n\n const stream = evt.streams[0];\n const connection = provider.getConnection(peerId, connectionId);\n\n if (connection.type === ConnectionType.Media) {\n const mediaConnection = <MediaConnection>connection;\n\n this._addStreamToMediaConnection(stream, mediaConnection);\n }\n };\n }\n\n cleanup(): void {\n logger.log(\"Cleaning up PeerConnection to \" + this.connection.peer);\n\n const peerConnection = this.connection.peerConnection;\n\n if (!peerConnection) {\n return;\n }\n\n this.connection.peerConnection = null;\n\n //unsubscribe from all PeerConnection's events\n peerConnection.onicecandidate = peerConnection.oniceconnectionstatechange = peerConnection.ondatachannel = peerConnection.ontrack = () => { };\n\n const peerConnectionNotClosed = peerConnection.signalingState !== \"closed\";\n let dataChannelNotClosed = false;\n\n if (this.connection.type === ConnectionType.Data) {\n const dataConnection = <DataConnection>this.connection;\n const dataChannel = dataConnection.dataChannel;\n\n if (dataChannel) {\n dataChannelNotClosed = !!dataChannel.readyState && dataChannel.readyState !== \"closed\";\n }\n }\n\n if (peerConnectionNotClosed || dataChannelNotClosed) {\n peerConnection.close();\n }\n }\n\n private async _makeOffer(): Promise<void> {\n const peerConnection = this.connection.peerConnection;\n const provider = this.connection.provider;\n\n try {\n const offer = await peerConnection.createOffer(\n this.connection.options.constraints\n );\n\n logger.log(\"Created offer.\");\n\n if (this.connection.options.sdpTransform && typeof this.connection.options.sdpTransform === 'function') {\n offer.sdp = this.connection.options.sdpTransform(offer.sdp) || offer.sdp;\n }\n\n try {\n await peerConnection.setLocalDescription(offer);\n\n logger.log(\"Set localDescription:\", offer, `for:${this.connection.peer}`);\n\n let payload: any = {\n sdp: offer,\n type: this.connection.type,\n connectionId: this.connection.connectionId,\n metadata: this.connection.metadata,\n browser: util.browser\n };\n\n if (this.connection.type === ConnectionType.Data) {\n const dataConnection = <DataConnection>this.connection;\n\n payload = {\n ...payload,\n label: dataConnection.label,\n reliable: dataConnection.reliable,\n serialization: dataConnection.serialization\n };\n }\n\n provider.socket.send({\n type: ServerMessageType.Offer,\n payload,\n dst: this.connection.peer\n });\n } catch (err) {\n // TODO: investigate why _makeOffer is being called from the answer\n if (\n err !=\n \"OperationError: Failed to set local offer sdp: Called in wrong state: kHaveRemoteOffer\"\n ) {\n provider.emitError(PeerErrorType.WebRTC, err);\n logger.log(\"Failed to setLocalDescription, \", err);\n }\n }\n } catch (err_1) {\n provider.emitError(PeerErrorType.WebRTC, err_1);\n logger.log(\"Failed to createOffer, \", err_1);\n }\n }\n\n private async _makeAnswer(): Promise<void> {\n const peerConnection = this.connection.peerConnection;\n const provider = this.connection.provider;\n\n try {\n const answer = await peerConnection.createAnswer();\n logger.log(\"Created answer.\");\n\n if (this.connection.options.sdpTransform && typeof this.connection.options.sdpTransform === 'function') {\n answer.sdp = this.connection.options.sdpTransform(answer.sdp) || answer.sdp;\n }\n\n try {\n await peerConnection.setLocalDescription(answer);\n\n logger.log(`Set localDescription:`, answer, `for:${this.connection.peer}`);\n\n provider.socket.send({\n type: ServerMessageType.Answer,\n payload: {\n sdp: answer,\n type: this.connection.type,\n connectionId: this.connection.connectionId,\n browser: util.browser\n },\n dst: this.connection.peer\n });\n } catch (err) {\n provider.emitError(PeerErrorType.WebRTC, err);\n logger.log(\"Failed to setLocalDescription, \", err);\n }\n } catch (err_1) {\n provider.emitError(PeerErrorType.WebRTC, err_1);\n logger.log(\"Failed to create answer, \", err_1);\n }\n }\n\n /** Handle an SDP. */\n async handleSDP(\n type: string,\n sdp: any\n ): Promise<void> {\n sdp = new RTCSessionDescription(sdp);\n const peerConnection = this.connection.peerConnection;\n const provider = this.connection.provider;\n\n logger.log(\"Setting remote description\", sdp);\n\n const self = this;\n\n try {\n await peerConnection.setRemoteDescription(sdp);\n logger.log(`Set remoteDescription:${type} for:${this.connection.peer}`);\n if (type === \"OFFER\") {\n await self._makeAnswer();\n }\n } catch (err) {\n provider.emitError(PeerErrorType.WebRTC, err);\n logger.log(\"Failed to setRemoteDescription, \", err);\n }\n }\n\n /** Handle a candidate. */\n async handleCandidate(ice: any): Promise<void> {\n logger.log(`handleCandidate:`, ice);\n\n const candidate = ice.candidate;\n const sdpMLineIndex = ice.sdpMLineIndex;\n const sdpMid = ice.sdpMid;\n const peerConnection = this.connection.peerConnection;\n const provider = this.connection.provider;\n\n try {\n await peerConnection.addIceCandidate(\n new RTCIceCandidate({\n sdpMid: sdpMid,\n sdpMLineIndex: sdpMLineIndex,\n candidate: candidate\n })\n );\n logger.log(`Added ICE candidate for:${this.connection.peer}`);\n } catch (err) {\n provider.emitError(PeerErrorType.WebRTC, err);\n logger.log(\"Failed to handleCandidate, \", err);\n }\n }\n\n private _addTracksToConnection(\n stream: MediaStream,\n peerConnection: RTCPeerConnection\n ): void {\n logger.log(`add tracks from stream ${stream.id} to peer connection`);\n\n if (!peerConnection.addTrack) {\n return logger.error(\n `Your browser does't support RTCPeerConnection#addTrack. Ignored.`\n );\n }\n\n stream.getTracks().forEach(track => {\n peerConnection.addTrack(track, stream);\n });\n }\n\n private _addStreamToMediaConnection(\n stream: MediaStream,\n mediaConnection: MediaConnection\n ): void {\n logger.log(\n `add stream ${stream.id} to media connection ${\n mediaConnection.connectionId\n }`\n );\n\n mediaConnection.addStream(stream);\n }\n}\n","import { EventEmitter } from \"eventemitter3\";\nimport { Peer } from \"./peer\";\nimport { ServerMessage } from \"./servermessage\";\nimport { ConnectionType } from \"./enums\";\n\nexport abstract class BaseConnection extends EventEmitter {\n protected _open = false;\n\n readonly metadata: any;\n connectionId: string;\n\n peerConnection: RTCPeerConnection;\n\n abstract get type(): ConnectionType;\n\n get open() {\n return this._open;\n }\n\n constructor(\n readonly peer: string,\n public provider: Peer,\n readonly options: any\n ) {\n super();\n\n this.metadata = options.metadata;\n }\n\n abstract close(): void;\n\n abstract handleMessage(message: ServerMessage): void;\n}\n","import { util } from \"./util\";\nimport logger from \"./logger\";\nimport { Negotiator } from \"./negotiator\";\nimport { ConnectionType, ConnectionEventType, ServerMessageType } from \"./enums\";\nimport { Peer } from \"./peer\";\nimport { BaseConnection } from \"./baseconnection\";\nimport { ServerMessage } from \"./servermessage\";\nimport { AnswerOption } from \"..\";\n\n/**\n * Wraps the streaming interface between two Peers.\n */\nexport class MediaConnection extends BaseConnection {\n private static readonly ID_PREFIX = \"mc_\";\n\n private _negotiator: Negotiator;\n private _localStream: MediaStream;\n private _remoteStream: MediaStream;\n\n get type() {\n return ConnectionType.Media;\n }\n\n get localStream(): MediaStream { return this._localStream; }\n get remoteStream(): MediaStream { return this._remoteStream; }\n\n constructor(peerId: string, provider: Peer, options: any) {\n super(peerId, provider, options);\n\n this._localStream = this.options._stream;\n this.connectionId =\n this.options.connectionId ||\n MediaConnection.ID_PREFIX + util.randomToken();\n\n this._negotiator = new Negotiator(this);\n\n if (this._localStream) {\n this._negotiator.startConnection({\n _stream: this._localStream,\n originator: true\n });\n }\n }\n\n addStream(remoteStream) {\n logger.log(\"Receiving stream\", remoteStream);\n\n this._remoteStream = remoteStream;\n super.emit(ConnectionEventType.Stream, remoteStream); // Should we call this `open`?\n }\n\n handleMessage(message: ServerMessage): void {\n const type = message.type;\n const payload = message.payload;\n\n switch (message.type) {\n case ServerMessageType.Answer:\n // Forward to negotiator\n this._negotiator.handleSDP(type, payload.sdp);\n this._open = true;\n break;\n case ServerMessageType.Candidate:\n this._negotiator.handleCandidate(payload.candidate);\n break;\n default:\n logger.warn(`Unrecognized message type:${type} from peer:${this.peer}`);\n break;\n }\n }\n\n answer(stream: MediaStream, options: AnswerOption = {}): void {\n if (this._localStream) {\n logger.warn(\n \"Local stream already exists on this MediaConnection. Are you answering a call twice?\"\n );\n return;\n }\n\n this._localStream = stream;\n\n if (options && options.sdpTransform) {\n this.options.sdpTransform = options.sdpTransform;\n }\n\n this._negotiator.startConnection({ ...this.options._payload, _stream: stream });\n // Retrieve lost messages stored because PeerConnection not set up.\n const messages = this.provider._getMessages(this.connectionId);\n\n for (let message of messages) {\n this.handleMessage(message);\n }\n\n this._open = true;\n }\n\n /**\n * Exposed functionality for users.\n */\n\n /** Allows user to close connection. */\n close(): void {\n if (this._negotiator) {\n this._negotiator.cleanup();\n this._negotiator = null;\n }\n\n this._localStream = null;\n this._remoteStream = null;\n\n if (this.provider) {\n this.provider._removeConnection(this);\n\n this.provider = null;\n }\n\n if (this.options && this.options._stream) {\n this.options._stream = null;\n }\n\n if (!this.open) {\n return;\n }\n\n this._open = false;\n\n super.emit(ConnectionEventType.Close);\n }\n}\n","import { EventEmitter } from \"eventemitter3\";\nimport logger from \"./logger\";\n\nexport class EncodingQueue extends EventEmitter {\n readonly fileReader: FileReader = new FileReader();\n\n private _queue: Blob[] = [];\n private _processing: boolean = false;\n\n constructor() {\n super();\n\n this.fileReader.onload = (evt) => {\n this._processing = false;\n\n if (evt.target) {\n this.emit('done', evt.target.result as ArrayBuffer);\n }\n\n this.doNextTask();\n };\n\n this.fileReader.onerror = (evt) => {\n logger.error(`EncodingQueue error:`, evt);\n this._processing = false;\n this.destroy();\n this.emit('error', evt);\n }\n }\n\n get queue(): Blob[] {\n return this._queue;\n }\n\n get size(): number {\n return this.queue.length;\n }\n\n get processing(): boolean {\n return this._processing;\n }\n\n enque(blob: Blob): void {\n this.queue.push(blob);\n\n if (this.processing) return;\n\n this.doNextTask();\n }\n\n destroy(): void {\n this.fileReader.abort();\n this._queue = [];\n }\n\n private doNextTask(): void {\n if (this.size === 0) return;\n if (this.processing) return;\n\n this._processing = true;\n\n this.fileReader.readAsArrayBuffer(this.queue.shift());\n }\n}","import { util } from \"./util\";\nimport logger from \"./logger\";\nimport { Negotiator } from \"./negotiator\";\nimport {\n ConnectionType,\n ConnectionEventType,\n SerializationType,\n ServerMessageType\n} from \"./enums\";\nimport { Peer } from \"./peer\";\nimport { BaseConnection } from \"./baseconnection\";\nimport { ServerMessage } from \"./servermessage\";\nimport { EncodingQueue } from './encodingQueue';\nimport { DataConnection as IDataConnection } from '../index';\n\n/**\n * Wraps a DataChannel between two Peers.\n */\nexport class DataConnection extends BaseConnection implements IDataConnection {\n private static readonly ID_PREFIX = \"dc_\";\n private static readonly MAX_BUFFERED_AMOUNT = 8 * 1024 * 1024;\n\n private _negotiator: Negotiator;\n readonly label: string;\n readonly serialization: SerializationType;\n readonly reliable: boolean;\n stringify: (data: any) => string = JSON.stringify;\n parse: (data: string) => any = JSON.parse;\n\n get type() {\n return ConnectionType.Data;\n }\n\n private _buffer: any[] = [];\n private _bufferSize = 0;\n private _buffering = false;\n private _chunkedData: {\n [id: number]: {\n data: Blob[],\n count: number,\n total: number\n }\n } = {};\n\n private _dc: RTCDataChannel;\n private _encodingQueue = new EncodingQueue();\n\n get dataChannel(): RTCDataChannel {\n return this._dc;\n }\n\n get bufferSize(): number { return this._bufferSize; }\n\n constructor(peerId: string, provider: Peer, options: any) {\n super(peerId, provider, options);\n\n this.connectionId =\n this.options.connectionId || DataConnection.ID_PREFIX + util.randomToken();\n\n this.label = this.options.label || this.connectionId;\n this.serialization = this.options.serialization || SerializationType.Binary;\n this.reliable = !!this.options.reliable;\n\n this._encodingQueue.on('done', (ab: ArrayBuffer) => {\n this._bufferedSend(ab);\n });\n\n this._encodingQueue.on('error', () => {\n logger.error(`DC#${this.connectionId}: Error occured in encoding from blob to arraybuffer, close DC`);\n this.close();\n });\n\n this._negotiator = new Negotiator(this);\n\n this._negotiator.startConnection(\n this.options._payload || {\n originator: true\n }\n );\n }\n\n /** Called by the Negotiator when the DataChannel is ready. */\n initialize(dc: RTCDataChannel): void {\n this._dc = dc;\n this._configureDataChannel();\n }\n\n private _configureDataChannel(): void {\n if (!util.supports.binaryBlob || util.supports.reliable) {\n this.dataChannel.binaryType = \"arraybuffer\";\n }\n\n this.dataChannel.onopen = () => {\n logger.log(`DC#${this.connectionId} dc connection success`);\n this._open = true;\n this.emit(ConnectionEventType.Open);\n };\n\n this.dataChannel.onmessage = (e) => {\n logger.log(`DC#${this.connectionId} dc onmessage:`, e.data);\n this._handleDataMessage(e);\n };\n\n this.dataChannel.onclose = () => {\n logger.log(`DC#${this.connectionId} dc closed for:`, this.peer);\n this.close();\n };\n }\n\n // Handles a DataChannel message.\n private _handleDataMessage({ data }: { data: Blob | ArrayBuffer | string }): void {\n const datatype = data.constructor;\n\n const isBinarySerialization = this.serialization === SerializationType.Binary ||\n this.serialization === SerializationType.BinaryUTF8;\n\n let deserializedData: any = data;\n\n if (isBinarySerialization) {\n if (datatype === Blob) {\n // Datatype should never be blob\n util.blobToArrayBuffer(data as Blob, (ab) => {\n const unpackedData = util.unpack(ab);\n this.emit(ConnectionEventType.Data, unpackedData);\n });\n return;\n } else if (datatype === ArrayBuffer) {\n deserializedData = util.unpack(data as ArrayBuffer);\n } else if (datatype === String) {\n // String fallback for binary data for browsers that don't support binary yet\n const ab = util.binaryStringToArrayBuffer(data as string);\n deserializedData = util.unpack(ab);\n }\n } else if (this.serialization === SerializationType.JSON) {\n deserializedData = this.parse(data as string);\n }\n\n // Check if we've chunked--if so, piece things back together.\n // We're guaranteed that this isn't 0.\n if (deserializedData.__peerData) {\n this._handleChunk(deserializedData);\n return;\n }\n\n super.emit(ConnectionEventType.Data, deserializedData);\n }\n\n private _handleChunk(data: { __peerData: number, n: number, total: number, data: Blob }): void {\n const id = data.__peerData;\n const chunkInfo = this._chunkedData[id] || {\n data: [],\n count: 0,\n total: data.total\n };\n\n chunkInfo.data[data.n] = data.data;\n chunkInfo.count++;\n this._chunkedData[id] = chunkInfo;\n\n if (chunkInfo.total === chunkInfo.count) {\n // Clean up before making the recursive call to `_handleDataMessage`.\n delete this._chunkedData[id];\n\n // We've received all the chunks--time to construct the complete data.\n const data = new Blob(chunkInfo.data);\n this._handleDataMessage({ data });\n }\n }\n\n /**\n * Exposed functionality for users.\n */\n\n /** Allows user to close connection. */\n close(): void {\n this._buffer = [];\n this._bufferSize = 0;\n this._chunkedData = {};\n\n if (this._negotiator) {\n this._negotiator.cleanup();\n this._negotiator = null;\n }\n\n if (this.provider) {\n this.provider._removeConnection(this);\n\n this.provider = null;\n }\n\n if (this.dataChannel) {\n this.dataChannel.onopen = null;\n this.dataChannel.onmessage = null;\n this.dataChannel.onclose = null;\n this._dc = null;\n }\n\n if (this._encodingQueue) {\n this._encodingQueue.destroy();\n this._encodingQueue.removeAllListeners();\n this._encodingQueue = null;\n }\n\n if (!this.open) {\n return;\n }\n\n this._open = false;\n\n super.emit(ConnectionEventType.Close);\n }\n\n /** Allows user to send data. */\n send(data: any, chunked?: boolean): void {\n if (!this.open) {\n super.emit(\n ConnectionEventType.Error,\n new Error(\n \"Connection is not open. You should listen for the `open` event before sending messages.\"\n )\n );\n return;\n }\n\n if (this.serialization === SerializationType.JSON) {\n this._bufferedSend(this.stringify(data));\n } else if (\n this.serialization === SerializationType.Binary ||\n this.serialization === SerializationType.BinaryUTF8\n ) {\n const blob = util.pack(data);\n\n if (!chunked && blob.size > util.chunkedMTU) {\n this._sendChunks(blob);\n return;\n }\n\n if (!util.supports.binaryBlob) {\n // We only do this if we really need to (e.g. blobs are not supported),\n // because this conversion is costly.\n this._encodingQueue.enque(blob);\n } else {\n this._bufferedSend(blob);\n }\n } else {\n this._bufferedSend(data);\n }\n }\n\n private _bufferedSend(msg: any): void {\n if (this._buffering || !this._trySend(msg)) {\n this._buffer.push(msg);\n this._bufferSize = this._buffer.length;\n }\n }\n\n // Returns true if the send succeeds.\n private _trySend(msg: any): boolean {\n if (!this.open) {\n return false;\n }\n\n if (this.dataChannel.bufferedAmount > DataConnection.MAX_BUFFERED_AMOUNT) {\n this._buffering = true;\n setTimeout(() => {\n this._buffering = false;\n this._tryBuffer();\n }, 50);\n\n return false;\n }\n\n try {\n this.dataChannel.send(msg);\n } catch (e) {\n logger.error(`DC#:${this.connectionId} Error when sending:`, e);\n this._buffering = true;\n\n this.close();\n\n return false;\n }\n\n return true;\n }\n\n // Try to send the first message in the buffer.\n private _tryBuffer(): void {\n if (!this.open) {\n return;\n }\n\n if (this._buffer.length === 0) {\n return;\n }\n\n const msg = this._buffer[0];\n\n if (this._trySend(msg)) {\n this._buffer.shift();\n this._bufferSize = this._buffer.length;\n this._tryBuffer();\n }\n }\n\n private _sendChunks(blob: Blob): void {\n const blobs = util.chunk(blob);\n logger.log(`DC#${this.connectionId} Try to send ${blobs.length} chunks...`);\n\n for (let blob of blobs) {\n this.send(blob, true);\n }\n }\n\n handleMessage(message: ServerMessage): void {\n const payload = message.payload;\n\n switch (message.type) {\n case ServerMessageType.Answer:\n this._negotiator.handleSDP(message.type, payload.sdp);\n break;\n case ServerMessageType.Candidate:\n this._negotiator.handleCandidate(payload.candidate);\n break;\n default:\n logger.warn(\n \"Unrecognized message type:\",\n message.type,\n \"from peer:\",\n this.peer\n );\n break;\n }\n }\n}\n","import { util } from \"./util\";\nimport logger from \"./logger\";\n\nexport class API {\n constructor(private readonly _options: any) { }\n\n private _buildUrl(method: string): string {\n const protocol = this._options.secure ? \"https://\" : \"http://\";\n let url =\n protocol +\n this._options.host +\n \":\" +\n this._options.port +\n this._options.path +\n this._options.key +\n \"/\" +\n method;\n const queryString = \"?ts=\" + new Date().getTime() + \"\" + Math.random();\n url += queryString;\n\n return url;\n }\n\n /** Get a unique ID from the server via XHR and initialize with it. */\n async retrieveId(): Promise<string> {\n const url = this._buildUrl(\"id\");\n\n try {\n const response = await fetch(url);\n\n if (response.status !== 200) {\n throw new Error(`Error. Status:${response.status}`);\n }\n\n return response.text();\n } catch (error) {\n logger.error(\"Error retrieving ID\", error);\n\n let pathError = \"\";\n\n if (\n this._options.path === \"/\" &&\n this._options.host !== util.CLOUD_HOST\n ) {\n pathError =\n \" If you passed in a `path` to your self-hosted PeerServer, \" +\n \"you'll also need to pass in that same path when creating a new \" +\n \"Peer.\";\n }\n\n throw new Error(\"Could not get an ID from the server.\" + pathError);\n }\n }\n\n /** @deprecated */\n async listAllPeers(): Promise<any[]> {\n const url = this._buildUrl(\"peers\");\n\n try {\n const response = await fetch(url);\n\n if (response.status !== 200) {\n if (response.status === 401) {\n let helpfulError = \"\";\n\n if (this._options.host === util.CLOUD_HOST) {\n helpfulError =\n \"It looks like you're using the cloud server. You can email \" +\n \"team@peerjs.com to enable peer listing for your API key.\";\n } else {\n helpfulError =\n \"You need to enable `allow_discovery` on your self-hosted \" +\n \"PeerServer to use this feature.\";\n }\n\n throw new Error(\"It doesn't look like you have permission to list peers IDs. \" +\n helpfulError);\n }\n\n throw new Error(`Error. Status:${response.status}`);\n }\n\n return response.json();\n } catch (error) {\n logger.error(\"Error retrieving list peers\", error);\n\n throw new Error(\"Could not get list peers from the server.\" + error);\n }\n }\n}\n","import { EventEmitter } from \"eventemitter3\";\nimport { util } from \"./util\";\nimport logger, { LogLevel } from \"./logger\";\nimport { Socket } from \"./socket\";\nimport { MediaConnection } from \"./mediaconnection\";\nimport { DataConnection } from \"./dataconnection\";\nimport {\n ConnectionType,\n PeerErrorType,\n PeerEventType,\n SocketEventType,\n ServerMessageType\n} from \"./enums\";\nimport { BaseConnection } from \"./baseconnection\";\nimport { ServerMessage } from \"./servermessage\";\nimport { API } from \"./api\";\nimport { PeerConnectOption, PeerJSOption } from \"..\";\n\nclass PeerOptions implements PeerJSOption {\n debug?: LogLevel; // 1: Errors, 2: Warnings, 3: All logs\n host?: string;\n port?: number;\n path?: string;\n key?: string;\n token?: string;\n config?: any;\n secure?: boolean;\n pingInterval?: number;\n logFunction?: (logLevel: LogLevel, ...rest: any[]) => void;\n}\n\n/**\n * A peer who can initiate connections with other peers.\n */\nexport class Peer extends EventEmitter {\n private static readonly DEFAULT_KEY = \"peerjs\";\n\n private readonly _options: PeerOptions;\n private readonly _api: API;\n private readonly _socket: Socket;\n\n private _id: string | null = null;\n private _lastServerId: string | null = null;\n\n // States.\n private _destroyed = false; // Connections have been killed\n private _disconnected = false; // Connection to PeerServer killed but P2P connections still active\n private _open = false; // Sockets and such are not yet open.\n private readonly _connections: Map<string, BaseConnection[]> = new Map(); // All connections for this peer.\n private readonly _lostMessages: Map<string, ServerMessage[]> = new Map(); // src => [list of messages]\n\n get id() {\n return this._id;\n }\n\n get options() {\n return this._options;\n }\n\n get open() {\n return this._open;\n }\n\n get socket() {\n return this._socket;\n }\n\n /**\n * @deprecated \n * Return type will change from Object to Map<string,[]> \n */\n get connections(): Object {\n const plainConnections = Object.create(null);\n\n for (let [k, v] of this._connections) {\n plainConnections[k] = v;\n }\n\n return plainConnections;\n }\n\n get destroyed() {\n return this._destroyed;\n }\n get disconnected() {\n return this._disconnected;\n }\n\n constructor(id?: string | PeerOptions, options?: PeerOptions) {\n super();\n\n let userId: string | undefined;\n\n // Deal with overloading\n if (id && id.constructor == Object) {\n options = id as PeerOptions;\n } else if (id) {\n userId = id.toString();\n }\n\n // Configurize options\n options = {\n debug: 0, // 1: Errors, 2: Warnings, 3: All logs\n host: util.CLOUD_HOST,\n port: util.CLOUD_PORT,\n path: \"/\",\n key: Peer.DEFAULT_KEY,\n token: util.randomToken(),\n config: util.defaultConfig,\n ...options\n };\n this._options = options;\n\n // Detect relative URL host.\n if (this._options.host === \"/\") {\n this._options.host = window.location.hostname;\n }\n\n // Set path correctly.\n if (this._options.path) {\n if (this._options.path[0] !== \"/\") {\n this._options.path = \"/\" + this._options.path;\n }\n if (this._options.path[this._options.path.length - 1] !== \"/\") {\n this._options.path += \"/\";\n }\n }\n\n // Set whether we use SSL to same as current host\n if (this._options.secure === undefined && this._options.host !== util.CLOUD_HOST) {\n this._options.secure = util.isSecure();\n } else if (this._options.host == util.CLOUD_HOST) {\n this._options.secure = true;\n }\n // Set a custom log function if present\n if (this._options.logFunction) {\n logger.setLogFunction(this._options.logFunction);\n }\n\n logger.logLevel = this._options.debug || 0;\n\n this._api = new API(options);\n this._socket = this._createServerConnection();\n\n // Sanity checks\n // Ensure WebRTC supported\n if (!util.supports.audioVideo && !util.supports.data) {\n this._delayedAbort(\n PeerErrorType.BrowserIncompatible,\n \"The current browser does not support WebRTC\"\n );\n return;\n }\n\n // Ensure alphanumeric id\n if (!!userId && !util.validateId(userId)) {\n this._delayedAbort(PeerErrorType.InvalidID, `ID \"${userId}\" is invalid`);\n return;\n }\n\n if (userId) {\n this._initialize(userId);\n } else {\n this._api.retrieveId()\n .then(id => this._initialize(id))\n .catch(error => this._abort(PeerErrorType.ServerError, error));\n }\n }\n\n private _createServerConnection(): Socket {\n const socket = new Socket(\n this._options.secure,\n this._options.host!,\n this._options.port!,\n this._options.path!,\n this._options.key!,\n this._options.pingInterval\n );\n\n socket.on(SocketEventType.Message, (data: ServerMessage) => {\n this._handleMessage(data);\n });\n\n socket.on(SocketEventType.Error, (error: string) => {\n this._abort(PeerErrorType.SocketError, error);\n });\n\n socket.on(SocketEventType.Disconnected, () => {\n if (this.disconnected) {\n return;\n }\n\n this.emitError(PeerErrorType.Network, \"Lost connection to server.\");\n this.disconnect();\n });\n\n socket.on(SocketEventType.Close, () => {\n if (this.disconnected) {\n return;\n }\n\n this._abort(PeerErrorType.SocketClosed, \"Underlying socket is already closed.\");\n });\n\n return socket;\n }\n\n /** Initialize a connection with the server. */\n private _initialize(id: string): void {\n this._id = id;\n this.socket.start(id, this._options.token!);\n }\n\n /** Handles messages from the server. */\n private _handleMessage(message: ServerMessage): void {\n const type = message.type;\n const payload = message.payload;\n const peerId = message.src;\n\n switch (type) {\n case ServerMessageType.Open: // The connection to the server is open.\n this._lastServerId = this.id;\n this._open = true;\n this.emit(PeerEventType.Open, this.id);\n break;\n case ServerMessageType.Error: // Server error.\n this._abort(PeerErrorType.ServerError, payload.msg);\n break;\n case ServerMessageType.IdTaken: // The selected ID is taken.\n this._abort(PeerErrorType.UnavailableID, `ID \"${this.id}\" is taken`);\n break;\n case ServerMessageType.InvalidKey: // The given API key cannot be found.\n this._abort(PeerErrorType.InvalidKey, `API KEY \"${this._options.key}\" is invalid`);\n break;\n case ServerMessageType.Leave: // Another peer has closed its connection to this peer.\n logger.log(`Received leave message from ${peerId}`);\n this._cleanupPeer(peerId);\n this._connections.delete(peerId);\n break;\n case ServerMessageType.Expire: // The offer sent to a peer has expired without response.\n this.emitError(PeerErrorType.PeerUnavailable, `Could not connect to peer ${peerId}`);\n break;\n case ServerMessageType.Offer: {\n // we should consider switching this to CALL/CONNECT, but this is the least breaking option.\n const connectionId = payload.connectionId;\n let connection = this.getConnection(peerId, connectionId);\n\n if (connection) {\n connection.close();\n logger.warn(`Offer received for existing Connection ID:${connectionId}`);\n }\n\n // Create a new connection.\n if (payload.type === ConnectionType.Media) {\n connection = new MediaConnection(peerId, this, {\n connectionId: connectionId,\n _payload: payload,\n metadata: payload.metadata\n });\n this._addConnection(peerId, connection);\n this.emit(PeerEventType.Call, connection);\n } else if (payload.type === ConnectionType.Data) {\n connection = new DataConnection(peerId, this, {\n connectionId: connectionId,\n _payload: payload,\n metadata: payload.metadata,\n label: payload.label,\n serialization: payload.serialization,\n reliable: payload.reliable\n });\n this._addConnection(peerId, connection);\n this.emit(PeerEventType.Connection, connection);\n } else {\n logger.warn(`Received malformed connection type:${payload.type}`);\n return;\n }\n\n // Find messages.\n const messages = this._getMessages(connectionId);\n for (let message of messages) {\n connection.handleMessage(message);\n }\n\n break;\n }\n default: {\n if (!payload) {\n logger.warn(`You received a malformed message from ${peerId} of type ${type}`);\n return;\n }\n\n const connectionId = payload.connectionId;\n const connection = this.getConnection(peerId, connectionId);\n\n if (connection && connection.peerConnection) {\n // Pass it on.\n connection.handleMessage(message);\n } else if (connectionId) {\n // Store for possible later use\n this._storeMessage(connectionId, message);\n } else {\n logger.warn(\"You received an unrecognized message:\", message);\n }\n break;\n }\n }\n }\n\n /** Stores messages without a set up connection, to be claimed later. */\n private _storeMessage(connectionId: string, message: ServerMessage): void {\n if (!this._lostMessages.has(connectionId)) {\n this._lostMessages.set(connectionId, []);\n }\n\n this._lostMessages.get(connectionId).push(message);\n }\n\n /** Retrieve messages from lost message store */\n //TODO Change it to private\n public _getMessages(connectionId: string): ServerMessage[] {\n const messages = this._lostMessages.get(connectionId);\n\n if (messages) {\n this._lostMessages.delete(connectionId);\n return messages;\n }\n\n return [];\n }\n\n /**\n * Returns a DataConnection to the specified peer. See documentation for a\n * complete list of options.\n */\n connect(peer: string, options: PeerConnectOption = {}): DataConnection {\n if (this.disconnected) {\n logger.warn(\n \"You cannot connect to a new Peer because you called \" +\n \".disconnect() on this Peer and ended your connection with the \" +\n \"server. You can create a new Peer to reconnect, or call reconnect \" +\n \"on this peer if you believe its ID to still be available.\"\n );\n this.emitError(\n PeerErrorType.Disconnected,\n \"Cannot connect to new Peer after disconnecting from server.\"\n );\n return;\n }\n\n const dataConnection = new DataConnection(peer, this, options);\n this._addConnection(peer, dataConnection);\n return dataConnection;\n }\n\n /**\n * Returns a MediaConnection to the specified peer. See documentation for a\n * complete list of options.\n */\n call(peer: string, stream: MediaStream, options: any = {}): MediaConnection {\n if (this.disconnected) {\n logger.warn(\n \"You cannot connect to a new Peer because you called \" +\n \".disconnect() on this Peer and ended your connection with the \" +\n \"server. You can create a new Peer to reconnect.\"\n );\n this.emitError(\n PeerErrorType.Disconnected,\n \"Cannot connect to new Peer after disconnecting from server.\"\n );\n return;\n }\n\n if (!stream) {\n logger.error(\n \"To call a peer, you must provide a stream from your browser's `getUserMedia`.\"\n );\n return;\n }\n\n options._stream = stream;\n\n const mediaConnection = new MediaConnection(peer, this, options);\n this._addConnection(peer, mediaConnection);\n return mediaConnection;\n }\n\n /** Add a data/media connection to this peer. */\n private _addConnection(peerId: string, connection: BaseConnection): void {\n logger.log(`add connection ${connection.type}:${connection.connectionId} to peerId:${peerId}`);\n\n if (!this._connections.has(peerId)) {\n this._connections.set(peerId, []);\n }\n this._connections.get(peerId).push(connection);\n }\n\n //TODO should be private\n _removeConnection(connection: BaseConnection): void {\n const connections = this._connections.get(connection.peer);\n\n if (connections) {\n const index = connections.indexOf(connection);\n\n if (index !== -1) {\n connections.splice(index, 1);\n }\n }\n\n //remove from lost messages\n this._lostMessages.delete(connection.connectionId);\n }\n\n /** Retrieve a data/media connection for this peer. */\n getConnection(peerId: string, connectionId: string): null | BaseConnection {\n const connections = this._connections.get(peerId);\n if (!connections) {\n return null;\n }\n\n for (let connection of connections) {\n if (connection.connectionId === connectionId) {\n return connection;\n }\n }\n\n return null;\n }\n\n private _delayedAbort(type: PeerErrorType, message: string | Error): void {\n setTimeout(() => {\n this._abort(type, message);\n }, 0);\n }\n\n /**\n * Emits an error message and destroys the Peer.\n * The Peer is not destroyed if it's in a disconnected state, in which case\n * it retains its disconnected state and its existing connections.\n */\n private _abort(type: PeerErrorType, message: string | Error): void {\n logger.error(\"Aborting!\");\n\n this.emitError(type, message);\n\n if (!this._lastServerId) {\n this.destroy();\n } else {\n this.disconnect();\n }\n }\n\n /** Emits a typed error message. */\n emitError(type: PeerErrorType, err: string | Error): void {\n logger.error(\"Error:\", err);\n\n let error: Error & { type?: PeerErrorType };\n\n if (typeof err === \"string\") {\n error = new Error(err);\n } else {\n error = err as Error;\n }\n\n error.type = type;\n\n this.emit(PeerEventType.Error, error);\n }\n\n /**\n * Destroys the Peer: closes all active connections as well as the connection\n * to the server.\n * Warning: The peer can no longer create or accept connections after being\n * destroyed.\n */\n destroy(): void {\n if (this.destroyed) {\n return;\n }\n\n logger.log(`Destroy peer with ID:${this.id}`);\n\n this.disconnect();\n this._cleanup();\n\n this._destroyed = true;\n\n this.emit(PeerEventType.Close);\n }\n\n /** Disconnects every connection on this peer. */\n private _cleanup(): void {\n for (let peerId of this._connections.keys()) {\n this._cleanupPeer(peerId);\n this._connections.delete(peerId);\n }\n\n this.socket.removeAllListeners();\n }\n\n /** Closes all connections to this peer. */\n private _cleanupPeer(peerId: string): void {\n const connections = this._connections.get(peerId);\n\n if (!connections) return;\n\n for (let connection of connections) {\n connection.close();\n }\n }\n\n /**\n * Disconnects the Peer's connection to the PeerServer. Does not close any\n * active connections.\n * Warning: The peer can no longer create or accept connections after being\n * disconnected. It also cannot reconnect to the server.\n */\n disconnect(): void {\n if (this.disconnected) {\n return;\n }\n\n const currentId = this.id;\n\n logger.log(`Disconnect peer with ID:${currentId}`);\n\n this._disconnected = true;\n this._open = false;\n\n this.socket.close();\n\n this._lastServerId = currentId;\n this._id = null;\n\n this.emit(PeerEventType.Disconnected, currentId);\n }\n\n /** Attempts to reconnect with the same ID. */\n reconnect(): void {\n if (this.disconnected && !this.destroyed) {\n logger.log(`Attempting reconnection to server with ID ${this._lastServerId}`);\n this._disconnected = false;\n this._initialize(this._lastServerId!);\n } else if (this.destroyed) {\n throw new Error(\"This peer cannot reconnect to the server. It has already been destroyed.\");\n } else if (!this.disconnected && !this.open) {\n // Do nothing. We're still connecting the first time.\n logger.error(\"In a hurry? We're still trying to make the initial connection!\");\n } else {\n throw new Error(`Peer ${this.id} cannot reconnect because it is not disconnected from the server!`);\n }\n }\n\n /**\n * Get a list of available peer IDs. If you're running your own server, you'll\n * want to set allow_discovery: true in the PeerServer options. If you're using\n * the cloud server, email team@peerjs.com to get the functionality enabled for\n * your key.\n */\n listAllPeers(cb = (_: any[]) => { }): void {\n this._api.listAllPeers()\n .then(peers => cb(peers))\n .catch(error => this._abort(PeerErrorType.ServerError, error));\n }\n}\n","import { util } from \"./util\";\nimport { Peer } from \"./peer\";\n\nexport const peerjs = {\n Peer,\n util\n};\n\nexport default Peer;\n\n(<any>window).peerjs = peerjs;\n/** @deprecated Should use peerjs namespace */\n(<any>window).Peer = Peer;\n"]}
\ No newline at end of file
diff --git a/node_modules/peerjs/dist/servermessage.js b/node_modules/peerjs/dist/servermessage.js
new file mode 100644
index 0000000..3cee119
--- /dev/null
+++ b/node_modules/peerjs/dist/servermessage.js
@@ -0,0 +1,9 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ServerMessage = void 0;
+var ServerMessage = /** @class */ (function () {
+ function ServerMessage() {
+ }
+ return ServerMessage;
+}());
+exports.ServerMessage = ServerMessage;
diff --git a/node_modules/peerjs/dist/socket.js b/node_modules/peerjs/dist/socket.js
new file mode 100644
index 0000000..fcc4000
--- /dev/null
+++ b/node_modules/peerjs/dist/socket.js
@@ -0,0 +1,155 @@
+"use strict";
+var __extends = (this && this.__extends) || (function () {
+ var extendStatics = function (d, b) {
+ extendStatics = Object.setPrototypeOf ||
+ ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+ function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
+ return extendStatics(d, b);
+ };
+ return function (d, b) {
+ if (typeof b !== "function" && b !== null)
+ throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
+ extendStatics(d, b);
+ function __() { this.constructor = d; }
+ d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+ };
+})();
+var __spreadArray = (this && this.__spreadArray) || function (to, from) {
+ for (var i = 0, il = from.length, j = to.length; i < il; i++, j++)
+ to[j] = from[i];
+ return to;
+};
+var __importDefault = (this && this.__importDefault) || function (mod) {
+ return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Socket = void 0;
+var eventemitter3_1 = require("eventemitter3");
+var logger_1 = __importDefault(require("./logger"));
+var enums_1 = require("./enums");
+/**
+ * An abstraction on top of WebSockets to provide fastest
+ * possible connection for peers.
+ */
+var Socket = /** @class */ (function (_super) {
+ __extends(Socket, _super);
+ function Socket(secure, host, port, path, key, pingInterval) {
+ if (pingInterval === void 0) { pingInterval = 5000; }
+ var _this = _super.call(this) || this;
+ _this.pingInterval = pingInterval;
+ _this._disconnected = true;
+ _this._messagesQueue = [];
+ var wsProtocol = secure ? "wss://" : "ws://";
+ _this._baseUrl = wsProtocol + host + ":" + port + path + "peerjs?key=" + key;
+ return _this;
+ }
+ Socket.prototype.start = function (id, token) {
+ var _this = this;
+ this._id = id;
+ var wsUrl = this._baseUrl + "&id=" + id + "&token=" + token;
+ if (!!this._socket || !this._disconnected) {
+ return;
+ }
+ this._socket = new WebSocket(wsUrl);
+ this._disconnected = false;
+ this._socket.onmessage = function (event) {
+ var data;
+ try {
+ data = JSON.parse(event.data);
+ logger_1.default.log("Server message received:", data);
+ }
+ catch (e) {
+ logger_1.default.log("Invalid server message", event.data);
+ return;
+ }
+ _this.emit(enums_1.SocketEventType.Message, data);
+ };
+ this._socket.onclose = function (event) {
+ if (_this._disconnected) {
+ return;
+ }
+ logger_1.default.log("Socket closed.", event);
+ _this._cleanup();
+ _this._disconnected = true;
+ _this.emit(enums_1.SocketEventType.Disconnected);
+ };
+ // Take care of the queue of connections if necessary and make sure Peer knows
+ // socket is open.
+ this._socket.onopen = function () {
+ if (_this._disconnected) {
+ return;
+ }
+ _this._sendQueuedMessages();
+ logger_1.default.log("Socket open");
+ _this._scheduleHeartbeat();
+ };
+ };
+ Socket.prototype._scheduleHeartbeat = function () {
+ var _this = this;
+ this._wsPingTimer = setTimeout(function () {
+ _this._sendHeartbeat();
+ }, this.pingInterval);
+ };
+ Socket.prototype._sendHeartbeat = function () {
+ if (!this._wsOpen()) {
+ logger_1.default.log("Cannot send heartbeat, because socket closed");
+ return;
+ }
+ var message = JSON.stringify({ type: enums_1.ServerMessageType.Heartbeat });
+ this._socket.send(message);
+ this._scheduleHeartbeat();
+ };
+ /** Is the websocket currently open? */
+ Socket.prototype._wsOpen = function () {
+ return !!this._socket && this._socket.readyState === 1;
+ };
+ /** Send queued messages. */
+ Socket.prototype._sendQueuedMessages = function () {
+ //Create copy of queue and clear it,
+ //because send method push the message back to queue if smth will go wrong
+ var copiedQueue = __spreadArray([], this._messagesQueue);
+ this._messagesQueue = [];
+ for (var _i = 0, copiedQueue_1 = copiedQueue; _i < copiedQueue_1.length; _i++) {
+ var message = copiedQueue_1[_i];
+ this.send(message);
+ }
+ };
+ /** Exposed send for DC & Peer. */
+ Socket.prototype.send = function (data) {
+ if (this._disconnected) {
+ return;
+ }
+ // If we didn't get an ID yet, we can't yet send anything so we should queue
+ // up these messages.
+ if (!this._id) {
+ this._messagesQueue.push(data);
+ return;
+ }
+ if (!data.type) {
+ this.emit(enums_1.SocketEventType.Error, "Invalid message");
+ return;
+ }
+ if (!this._wsOpen()) {
+ return;
+ }
+ var message = JSON.stringify(data);
+ this._socket.send(message);
+ };
+ Socket.prototype.close = function () {
+ if (this._disconnected) {
+ return;
+ }
+ this._cleanup();
+ this._disconnected = true;
+ };
+ Socket.prototype._cleanup = function () {
+ if (this._socket) {
+ this._socket.onopen = this._socket.onmessage = this._socket.onclose = null;
+ this._socket.close();
+ this._socket = undefined;
+ }
+ clearTimeout(this._wsPingTimer);
+ };
+ return Socket;
+}(eventemitter3_1.EventEmitter));
+exports.Socket = Socket;
diff --git a/node_modules/peerjs/dist/supports.js b/node_modules/peerjs/dist/supports.js
new file mode 100644
index 0000000..92fe0df
--- /dev/null
+++ b/node_modules/peerjs/dist/supports.js
@@ -0,0 +1,64 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Supports = void 0;
+var adapter_1 = require("./adapter");
+exports.Supports = new /** @class */ (function () {
+ function class_1() {
+ this.isIOS = ['iPad', 'iPhone', 'iPod'].includes(navigator.platform);
+ this.supportedBrowsers = ['firefox', 'chrome', 'safari'];
+ this.minFirefoxVersion = 59;
+ this.minChromeVersion = 72;
+ this.minSafariVersion = 605;
+ }
+ class_1.prototype.isWebRTCSupported = function () {
+ return typeof RTCPeerConnection !== 'undefined';
+ };
+ class_1.prototype.isBrowserSupported = function () {
+ var browser = this.getBrowser();
+ var version = this.getVersion();
+ var validBrowser = this.supportedBrowsers.includes(browser);
+ if (!validBrowser)
+ return false;
+ if (browser === 'chrome')
+ return version >= this.minChromeVersion;
+ if (browser === 'firefox')
+ return version >= this.minFirefoxVersion;
+ if (browser === 'safari')
+ return !this.isIOS && version >= this.minSafariVersion;
+ return false;
+ };
+ class_1.prototype.getBrowser = function () {
+ return adapter_1.webRTCAdapter.browserDetails.browser;
+ };
+ class_1.prototype.getVersion = function () {
+ return adapter_1.webRTCAdapter.browserDetails.version || 0;
+ };
+ class_1.prototype.isUnifiedPlanSupported = function () {
+ var browser = this.getBrowser();
+ var version = adapter_1.webRTCAdapter.browserDetails.version || 0;
+ if (browser === 'chrome' && version < 72)
+ return false;
+ if (browser === 'firefox' && version >= 59)
+ return true;
+ if (!window.RTCRtpTransceiver || !('currentDirection' in RTCRtpTransceiver.prototype))
+ return false;
+ var tempPc;
+ var supported = false;
+ try {
+ tempPc = new RTCPeerConnection();
+ tempPc.addTransceiver('audio');
+ supported = true;
+ }
+ catch (e) { }
+ finally {
+ if (tempPc) {
+ tempPc.close();
+ }
+ }
+ return supported;
+ };
+ class_1.prototype.toString = function () {
+ return "Supports: \n browser:" + this.getBrowser() + " \n version:" + this.getVersion() + " \n isIOS:" + this.isIOS + " \n isWebRTCSupported:" + this.isWebRTCSupported() + " \n isBrowserSupported:" + this.isBrowserSupported() + " \n isUnifiedPlanSupported:" + this.isUnifiedPlanSupported();
+ };
+ return class_1;
+}());
diff --git a/node_modules/peerjs/dist/util.js b/node_modules/peerjs/dist/util.js
new file mode 100644
index 0000000..ce7f523
--- /dev/null
+++ b/node_modules/peerjs/dist/util.js
@@ -0,0 +1,150 @@
+"use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+ if (k2 === undefined) k2 = k;
+ Object.defineProperty(o, k2, { enumerable: true, get: function() { return m[k]; } });
+}) : (function(o, m, k, k2) {
+ if (k2 === undefined) k2 = k;
+ o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+ Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+ o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || function (mod) {
+ if (mod && mod.__esModule) return mod;
+ var result = {};
+ if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+ __setModuleDefault(result, mod);
+ return result;
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.util = void 0;
+var BinaryPack = __importStar(require("peerjs-js-binarypack"));
+var supports_1 = require("./supports");
+var DEFAULT_CONFIG = {
+ iceServers: [
+ { urls: "stun:stun.l.google.com:19302" },
+ { urls: "turn:0.peerjs.com:3478", username: "peerjs", credential: "peerjsp" }
+ ],
+ sdpSemantics: "unified-plan"
+};
+exports.util = new /** @class */ (function () {
+ function class_1() {
+ this.CLOUD_HOST = "0.peerjs.com";
+ this.CLOUD_PORT = 443;
+ // Browsers that need chunking:
+ this.chunkedBrowsers = { Chrome: 1, chrome: 1 };
+ this.chunkedMTU = 16300; // The original 60000 bytes setting does not work when sending data from Firefox to Chrome, which is "cut off" after 16384 bytes and delivered individually.
+ // Returns browser-agnostic default config
+ this.defaultConfig = DEFAULT_CONFIG;
+ this.browser = supports_1.Supports.getBrowser();
+ this.browserVersion = supports_1.Supports.getVersion();
+ // Lists which features are supported
+ this.supports = (function () {
+ var supported = {
+ browser: supports_1.Supports.isBrowserSupported(),
+ webRTC: supports_1.Supports.isWebRTCSupported(),
+ audioVideo: false,
+ data: false,
+ binaryBlob: false,
+ reliable: false,
+ };
+ if (!supported.webRTC)
+ return supported;
+ var pc;
+ try {
+ pc = new RTCPeerConnection(DEFAULT_CONFIG);
+ supported.audioVideo = true;
+ var dc = void 0;
+ try {
+ dc = pc.createDataChannel("_PEERJSTEST", { ordered: true });
+ supported.data = true;
+ supported.reliable = !!dc.ordered;
+ // Binary test
+ try {
+ dc.binaryType = "blob";
+ supported.binaryBlob = !supports_1.Supports.isIOS;
+ }
+ catch (e) {
+ }
+ }
+ catch (e) {
+ }
+ finally {
+ // @ts-ignore
+ if (dc) {
+ dc.close();
+ }
+ }
+ }
+ catch (e) {
+ }
+ finally {
+ // @ts-ignore
+ if (pc) {
+ pc.close();
+ }
+ }
+ return supported;
+ })();
+ this.pack = BinaryPack.pack;
+ this.unpack = BinaryPack.unpack;
+ // Binary stuff
+ this._dataCount = 1;
+ }
+ class_1.prototype.noop = function () { };
+ // Ensure alphanumeric ids
+ class_1.prototype.validateId = function (id) {
+ // Allow empty ids
+ return !id || /^[A-Za-z0-9]+(?:[ _-][A-Za-z0-9]+)*$/.test(id);
+ };
+ class_1.prototype.chunk = function (blob) {
+ var chunks = [];
+ var size = blob.size;
+ var total = Math.ceil(size / exports.util.chunkedMTU);
+ var index = 0;
+ var start = 0;
+ while (start < size) {
+ var end = Math.min(size, start + exports.util.chunkedMTU);
+ var b = blob.slice(start, end);
+ var chunk = {
+ __peerData: this._dataCount,
+ n: index,
+ data: b,
+ total: total,
+ };
+ chunks.push(chunk);
+ start = end;
+ index++;
+ }
+ this._dataCount++;
+ return chunks;
+ };
+ class_1.prototype.blobToArrayBuffer = function (blob, cb) {
+ var fr = new FileReader();
+ fr.onload = function (evt) {
+ if (evt.target) {
+ cb(evt.target.result);
+ }
+ };
+ fr.readAsArrayBuffer(blob);
+ return fr;
+ };
+ class_1.prototype.binaryStringToArrayBuffer = function (binary) {
+ var byteArray = new Uint8Array(binary.length);
+ for (var i = 0; i < binary.length; i++) {
+ byteArray[i] = binary.charCodeAt(i) & 0xff;
+ }
+ return byteArray.buffer;
+ };
+ class_1.prototype.randomToken = function () {
+ return Math.random()
+ .toString(36)
+ .substr(2);
+ };
+ class_1.prototype.isSecure = function () {
+ return location.protocol === "https:";
+ };
+ return class_1;
+}());
diff --git a/node_modules/peerjs/lib/baseconnection.ts b/node_modules/peerjs/lib/baseconnection.ts
index 8256fed..6ba8577 100644
--- a/node_modules/peerjs/lib/baseconnection.ts
+++ b/node_modules/peerjs/lib/baseconnection.ts
@@ -7,8 +7,10 @@ export abstract class BaseConnection extends EventEmitter {
protected _open = false;
readonly metadata: any;
+ // @ts-ignore
connectionId: string;
+ // @ts-ignore
peerConnection: RTCPeerConnection;
abstract get type(): ConnectionType;
diff --git a/node_modules/peerjs/lib/dataconnection.ts b/node_modules/peerjs/lib/dataconnection.ts
index aec3c05..a30e090 100644
--- a/node_modules/peerjs/lib/dataconnection.ts
+++ b/node_modules/peerjs/lib/dataconnection.ts
@@ -16,6 +16,7 @@ import { DataConnection as IDataConnection } from '../index';
/**
* Wraps a DataChannel between two Peers.
*/
+// @ts-ignore
export class DataConnection extends BaseConnection implements IDataConnection {
private static readonly ID_PREFIX = "dc_";
private static readonly MAX_BUFFERED_AMOUNT = 8 * 1024 * 1024;
@@ -42,6 +43,7 @@ export class DataConnection extends BaseConnection implements IDataConnection {
}
} = {};
+ // @ts-ignore
private _dc: RTCDataChannel;
private _encodingQueue = new EncodingQueue();
@@ -120,6 +122,7 @@ export class DataConnection extends BaseConnection implements IDataConnection {
if (datatype === Blob) {
// Datatype should never be blob
util.blobToArrayBuffer(data as Blob, (ab) => {
+ // @ts-ignore
const unpackedData = util.unpack(ab);
this.emit(ConnectionEventType.Data, unpackedData);
});
@@ -179,12 +182,14 @@ export class DataConnection extends BaseConnection implements IDataConnection {
if (this._negotiator) {
this._negotiator.cleanup();
+ // @ts-ignore
this._negotiator = null;
}
if (this.provider) {
this.provider._removeConnection(this);
+ // @ts-ignore
this.provider = null;
}
@@ -192,12 +197,14 @@ export class DataConnection extends BaseConnection implements IDataConnection {
this.dataChannel.onopen = null;
this.dataChannel.onmessage = null;
this.dataChannel.onclose = null;
+ // @ts-ignore
this._dc = null;
}
if (this._encodingQueue) {
this._encodingQueue.destroy();
this._encodingQueue.removeAllListeners();
+ // @ts-ignore
this._encodingQueue = null;
}
diff --git a/node_modules/peerjs/lib/encodingQueue.ts b/node_modules/peerjs/lib/encodingQueue.ts
index f0b3e40..7322ecf 100644
--- a/node_modules/peerjs/lib/encodingQueue.ts
+++ b/node_modules/peerjs/lib/encodingQueue.ts
@@ -59,6 +59,7 @@ export class EncodingQueue extends EventEmitter {
this._processing = true;
+ // @ts-ignore
this.fileReader.readAsArrayBuffer(this.queue.shift());
}
}
\ No newline at end of file
diff --git a/node_modules/peerjs/lib/index.ts b/node_modules/peerjs/lib/index.ts
new file mode 100644
index 0000000..a613237
--- /dev/null
+++ b/node_modules/peerjs/lib/index.ts
@@ -0,0 +1,15 @@
+export * from './adapter';
+export * from './api';
+export * from './baseconnection';
+export * from './dataconnection';
+export * from './encodingQueue';
+export * from './enums';
+export * from './exports';
+export * from './logger';
+export * from './mediaconnection';
+export * from './negotiator';
+export * from './peer';
+export * from './servermessage';
+export * from './socket';
+export * from './supports';
+export * from './util';
diff --git a/node_modules/peerjs/lib/mediaconnection.ts b/node_modules/peerjs/lib/mediaconnection.ts
index 2f5d0ff..df160e2 100644
--- a/node_modules/peerjs/lib/mediaconnection.ts
+++ b/node_modules/peerjs/lib/mediaconnection.ts
@@ -15,6 +15,7 @@ export class MediaConnection extends BaseConnection {
private _negotiator: Negotiator;
private _localStream: MediaStream;
+// @ts-ignore
private _remoteStream: MediaStream;
get type() {
@@ -42,6 +43,7 @@ export class MediaConnection extends BaseConnection {
}
}
+// @ts-ignore
addStream(remoteStream) {
logger.log("Receiving stream", remoteStream);
@@ -101,15 +103,19 @@ export class MediaConnection extends BaseConnection {
close(): void {
if (this._negotiator) {
this._negotiator.cleanup();
+// @ts-ignore
this._negotiator = null;
}
+// @ts-ignore
this._localStream = null;
+// @ts-ignore
this._remoteStream = null;
if (this.provider) {
this.provider._removeConnection(this);
+// @ts-ignore
this.provider = null;
}
diff --git a/node_modules/peerjs/lib/negotiator.ts b/node_modules/peerjs/lib/negotiator.ts
index 26e7044..226f8b8 100644
--- a/node_modules/peerjs/lib/negotiator.ts
+++ b/node_modules/peerjs/lib/negotiator.ts
@@ -143,6 +143,7 @@ export class Negotiator {
const stream = evt.streams[0];
const connection = provider.getConnection(peerId, connectionId);
+// @ts-ignore
if (connection.type === ConnectionType.Media) {
const mediaConnection = <MediaConnection>connection;
@@ -160,6 +161,7 @@ export class Negotiator {
return;
}
+// @ts-ignore
this.connection.peerConnection = null;
//unsubscribe from all PeerConnection's events
diff --git a/node_modules/peerjs/lib/peer.ts b/node_modules/peerjs/lib/peer.ts
index 8f11659..565733b 100644
--- a/node_modules/peerjs/lib/peer.ts
+++ b/node_modules/peerjs/lib/peer.ts
@@ -72,6 +72,7 @@ export class Peer extends EventEmitter {
get connections(): Object {
const plainConnections = Object.create(null);
+// @ts-ignore
for (let [k, v] of this._connections) {
plainConnections[k] = v;
}
@@ -312,6 +313,7 @@ export class Peer extends EventEmitter {
this._lostMessages.set(connectionId, []);
}
+// @ts-ignore
this._lostMessages.get(connectionId).push(message);
}
@@ -344,6 +346,7 @@ export class Peer extends EventEmitter {
PeerErrorType.Disconnected,
"Cannot connect to new Peer after disconnecting from server."
);
+// @ts-ignore
return;
}
@@ -367,6 +370,7 @@ export class Peer extends EventEmitter {
PeerErrorType.Disconnected,
"Cannot connect to new Peer after disconnecting from server."
);
+// @ts-ignore
return;
}
@@ -374,6 +378,7 @@ export class Peer extends EventEmitter {
logger.error(
"To call a peer, you must provide a stream from your browser's `getUserMedia`."
);
+// @ts-ignore
return;
}
@@ -391,6 +396,7 @@ export class Peer extends EventEmitter {
if (!this._connections.has(peerId)) {
this._connections.set(peerId, []);
}
+// @ts-ignore
this._connections.get(peerId).push(connection);
}
@@ -489,6 +495,7 @@ export class Peer extends EventEmitter {
/** Disconnects every connection on this peer. */
private _cleanup(): void {
+// @ts-ignore
for (let peerId of this._connections.keys()) {
this._cleanupPeer(peerId);
this._connections.delete(peerId);
diff --git a/node_modules/peerjs/lib/peerjs.min.ts b/node_modules/peerjs/lib/peerjs.min.ts
new file mode 100644
index 0000000..ea465c2
--- /dev/null
+++ b/node_modules/peerjs/lib/peerjs.min.ts
@@ -0,0 +1 @@
+export * from './index';
diff --git a/node_modules/peerjs/lib/servermessage.ts b/node_modules/peerjs/lib/servermessage.ts
index 7e0b577..4bcbbca 100644
--- a/node_modules/peerjs/lib/servermessage.ts
+++ b/node_modules/peerjs/lib/servermessage.ts
@@ -1,7 +1,9 @@
import { ServerMessageType } from "./enums";
export class ServerMessage {
+ // @ts-ignore
type: ServerMessageType;
payload: any;
+ // @ts-ignore
src: string;
}
diff --git a/node_modules/peerjs/lib/supports.ts b/node_modules/peerjs/lib/supports.ts
index ff5b6d6..6a7e431 100644
--- a/node_modules/peerjs/lib/supports.ts
+++ b/node_modules/peerjs/lib/supports.ts
@@ -43,7 +43,7 @@ export const Supports = new class {
if (browser === 'firefox' && version >= 59) return true;
if (!window.RTCRtpTransceiver || !('currentDirection' in RTCRtpTransceiver.prototype)) return false;
- let tempPc: RTCPeerConnection;
+ let tempPc: RTCPeerConnection | undefined;
let supported = false;
try {
diff --git a/node_modules/peerjs/lib/util.ts b/node_modules/peerjs/lib/util.ts
index c2cf7a1..d6ec8f2 100644
--- a/node_modules/peerjs/lib/util.ts
+++ b/node_modules/peerjs/lib/util.ts
@@ -61,12 +61,14 @@ export const util = new class {
}
} catch (e) {
} finally {
+// @ts-ignore
if (dc) {
dc.close();
}
}
} catch (e) {
} finally {
+// @ts-ignore
if (pc) {
pc.close();
}
diff --git a/node_modules/peerjs/tsconfig.json b/node_modules/peerjs/tsconfig.json
new file mode 100644
index 0000000..c138caf
--- /dev/null
+++ b/node_modules/peerjs/tsconfig.json
@@ -0,0 +1,75 @@
+{
+ "compilerOptions": {
+ /* Visit https://aka.ms/tsconfig.json to read more about this file */
+
+ /* Basic Options */
+ // "incremental": true, /* Enable incremental compilation */
+ "target": "es5", /* Specify ECMAScript target version: 'ES3' (default), 'ES5', 'ES2015', 'ES2016', 'ES2017', 'ES2018', 'ES2019', 'ES2020', or 'ESNEXT'. */
+ "module": "commonjs", /* Specify module code generation: 'none', 'commonjs', 'amd', 'system', 'umd', 'es2015', 'es2020', or 'ESNext'. */
+ // "lib": [], /* Specify library files to be included in the compilation. */
+ // "allowJs": true, /* Allow javascript files to be compiled. */
+ // "checkJs": true, /* Report errors in .js files. */
+ // "jsx": "preserve", /* Specify JSX code generation: 'preserve', 'react-native', 'react', 'react-jsx' or 'react-jsxdev'. */
+ // "declaration": true, /* Generates corresponding '.d.ts' file. */
+ // "declarationMap": true, /* Generates a sourcemap for each corresponding '.d.ts' file. */
+ // "sourceMap": true, /* Generates corresponding '.map' file. */
+ // "outFile": "./", /* Concatenate and emit output to single file. */
+ "outDir": "./dist", /* Redirect output structure to the directory. */
+ // "rootDir": "./", /* Specify the root directory of input files. Use to control the output directory structure with --outDir. */
+ // "composite": true, /* Enable project compilation */
+ // "tsBuildInfoFile": "./", /* Specify file to store incremental compilation information */
+ // "removeComments": true, /* Do not emit comments to output. */
+ // "noEmit": true, /* Do not emit outputs. */
+ // "importHelpers": true, /* Import emit helpers from 'tslib'. */
+ // "downlevelIteration": true, /* Provide full support for iterables in 'for-of', spread, and destructuring when targeting 'ES5' or 'ES3'. */
+ // "isolatedModules": true, /* Transpile each file as a separate module (similar to 'ts.transpileModule'). */
+
+ /* Strict Type-Checking Options */
+ "strict": true, /* Enable all strict type-checking options. */
+ // "noImplicitAny": true, /* Raise error on expressions and declarations with an implied 'any' type. */
+ // "strictNullChecks": true, /* Enable strict null checks. */
+ // "strictFunctionTypes": true, /* Enable strict checking of function types. */
+ // "strictBindCallApply": true, /* Enable strict 'bind', 'call', and 'apply' methods on functions. */
+ // "strictPropertyInitialization": true, /* Enable strict checking of property initialization in classes. */
+ // "noImplicitThis": true, /* Raise error on 'this' expressions with an implied 'any' type. */
+ // "alwaysStrict": true, /* Parse in strict mode and emit "use strict" for each source file. */
+
+ /* Additional Checks */
+ "noUnusedLocals": false, /* Report errors on unused locals. */
+ "noUnusedParameters": false, /* Report errors on unused parameters. */
+ "noImplicitReturns": false, /* Report error when not all code paths in function return a value. */
+ "noFallthroughCasesInSwitch": false, /* Report errors for fallthrough cases in switch statement. */
+ "noUncheckedIndexedAccess": false, /* Include 'undefined' in index signature results */
+ "noPropertyAccessFromIndexSignature": false, /* Require undeclared properties from index signatures to use element accesses. */
+
+ /* Module Resolution Options */
+ // "moduleResolution": "node", /* Specify module resolution strategy: 'node' (Node.js) or 'classic' (TypeScript pre-1.6). */
+ // "baseUrl": "./", /* Base directory to resolve non-absolute module names. */
+ // "paths": {}, /* A series of entries which re-map imports to lookup locations relative to the 'baseUrl'. */
+ // "rootDirs": [], /* List of root folders whose combined content represents the structure of the project at runtime. */
+ // "typeRoots": [], /* List of folders to include type definitions from. */
+ // "types": [], /* Type declaration files to be included in compilation. */
+ // "allowSyntheticDefaultImports": true, /* Allow default imports from modules with no default export. This does not affect code emit, just typechecking. */
+ "esModuleInterop": true, /* Enables emit interoperability between CommonJS and ES Modules via creation of namespace objects for all imports. Implies 'allowSyntheticDefaultImports'. */
+ // "preserveSymlinks": true, /* Do not resolve the real path of symlinks. */
+ // "allowUmdGlobalAccess": true, /* Allow accessing UMD globals from modules. */
+
+ /* Source Map Options */
+ // "sourceRoot": "", /* Specify the location where debugger should locate TypeScript files instead of source locations. */
+ // "mapRoot": "", /* Specify the location where debugger should locate map files instead of generated locations. */
+ // "inlineSourceMap": true, /* Emit a single file with source maps instead of having a separate file. */
+ // "inlineSources": true, /* Emit the source alongside the sourcemaps within a single file; requires '--inlineSourceMap' or '--sourceMap' to be set. */
+
+ /* Experimental Options */
+ // "experimentalDecorators": true, /* Enables experimental support for ES7 decorators. */
+ // "emitDecoratorMetadata": true, /* Enables experimental support for emitting type metadata for decorators. */
+
+ /* Advanced Options */
+ "skipLibCheck": true, /* Skip type checking of declaration files. */
+ "forceConsistentCasingInFileNames": true /* Disallow inconsistently-cased references to the same file. */
+ },
+ "include": [
+ "index.d.ts",
+ "lib"
+ ]
+}
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