(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.adapter = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i 0 && arguments[0] !== undefined ? arguments[0] : {}, window = _ref.window; var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : { shimChrome: true, shimFirefox: 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, // Expose sdp as a convenience. For production apps include directly. sdp: sdp }; // 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); commonShim.shimParameterlessSetLocalDescription(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); commonShim.shimParameterlessSetLocalDescription(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 '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); commonShim.shimParameterlessSetLocalDescription(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; } // Browser shims. },{"./chrome/chrome_shim":3,"./common_shim":6,"./firefox/firefox_shim":7,"./safari/safari_shim":10,"./utils":11,"sdp":12}],3:[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.shimGetDisplayMedia = exports.shimGetUserMedia = undefined; var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; var _getusermedia = require('./getusermedia'); Object.defineProperty(exports, 'shimGetUserMedia', { enumerable: true, get: function get() { return _getusermedia.shimGetUserMedia; } }); var _getdisplaymedia = require('./getdisplaymedia'); Object.defineProperty(exports, 'shimGetDisplayMedia', { enumerable: true, get: function get() { return _getdisplaymedia.shimGetDisplayMedia; } }); 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; var _utils = require('../utils.js'); var utils = _interopRequireWildcard(_utils); function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; 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 shimMediaStream(window) { window.MediaStream = window.MediaStream || window.webkitMediaStream; } function shimOnTrack(window) { if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && !('ontrack' in window.RTCPeerConnection.prototype)) { Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', { get: function get() { return this._ontrack; }, set: function set(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 = void 0; 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 = void 0; 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 === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection && !('getSenders' in window.RTCPeerConnection.prototype) && 'createDTMFSender' in window.RTCPeerConnection.prototype) { var shimSenderWithDtmf = function shimSenderWithDtmf(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 === 'undefined' ? 'undefined' : _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 get() { 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 _arguments = Array.prototype.slice.call(arguments), selector = _arguments[0], onSucc = _arguments[1], onErr = _arguments[2]; // 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 fixChromeStats_(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 makeMapStats(stats) { return new Map(Object.keys(stats).map(function (key) { return [key, stats[key]]; })); }; if (arguments.length >= 2) { var successCallbackWrapper_ = function successCallbackWrapper_(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 === 'undefined' ? 'undefined' : _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 = void 0; var receiver = void 0; var err = void 0; 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 get() { 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 = void 0; 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":11,"./getdisplaymedia":4,"./getusermedia":5}],4:[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); }); }; } },{}],5:[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 }); var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; exports.shimGetUserMedia = shimGetUserMedia; var _utils = require('../utils.js'); var utils = _interopRequireWildcard(_utils); function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } var logging = utils.log; function shimGetUserMedia(window, browserDetails) { var navigator = window && window.navigator; if (!navigator.mediaDevices) { return; } var constraintsToChrome_ = function constraintsToChrome_(c) { if ((typeof c === 'undefined' ? 'undefined' : _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 oldname_(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 shimConstraints_(constraints, func) { if (browserDetails.version >= 61) { return func(constraints); } constraints = JSON.parse(JSON.stringify(constraints)); if (constraints && _typeof(constraints.audio) === 'object') { var remap = function remap(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 === 'undefined' ? 'undefined' : _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 = void 0; 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 shimError_(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 toString() { return this.name + (this.message && ': ') + this.message; } }; }; var getUserMedia_ = function getUserMedia_(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":11}],6:[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 }); var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; exports.shimRTCIceCandidate = shimRTCIceCandidate; exports.shimMaxMessageSize = shimMaxMessageSize; exports.shimSendThrowTypeError = shimSendThrowTypeError; exports.shimConnectionState = shimConnectionState; exports.removeExtmapAllowMixed = removeExtmapAllowMixed; exports.shimAddIceCandidateNullOrEmpty = shimAddIceCandidateNullOrEmpty; exports.shimParameterlessSetLocalDescription = shimParameterlessSetLocalDescription; var _sdp = require('sdp'); var _sdp2 = _interopRequireDefault(_sdp); var _utils = require('./utils'); var utils = _interopRequireWildcard(_utils); function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: 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 === 'undefined' ? 'undefined' : _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 = _sdp2.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 get() { return typeof this._sctp === 'undefined' ? null : this._sctp; } }); } var sctpInDescription = function sctpInDescription(description) { if (!description || !description.sdp) { return false; } var sections = _sdp2.default.splitSections(description.sdp); sections.shift(); return sections.some(function (mediaSection) { var mLine = _sdp2.default.parseMLine(mediaSection); return mLine && mLine.kind === 'application' && mLine.protocol.indexOf('SCTP') !== -1; }); }; var getRemoteFirefoxVersion = function getRemoteFirefoxVersion(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 getCanSendMaxMessageSize(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 getMaxMessageSize(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 = _sdp2.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 _getConfiguration = this.getConfiguration(), sdpSemantics = _getConfiguration.sdpSemantics; if (sdpSemantics === 'plan-b') { Object.defineProperty(this, 'sctp', { get: function get() { 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 = void 0; 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 get() { 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 get() { return { completed: 'connected', checking: 'connecting' }[this.iceConnectionState] || this.iceConnectionState; }, enumerable: true, configurable: true }); Object.defineProperty(proto, 'onconnectionstatechange', { get: function get() { return this._onconnectionstatechange || null; }, set: function set(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); }; } // Note: Make sure to call this ahead of APIs that modify // setLocalDescription.length function shimParameterlessSetLocalDescription(window, browserDetails) { if (!(window.RTCPeerConnection && window.RTCPeerConnection.prototype)) { return; } var nativeSetLocalDescription = window.RTCPeerConnection.prototype.setLocalDescription; if (!nativeSetLocalDescription || nativeSetLocalDescription.length === 0) { return; } window.RTCPeerConnection.prototype.setLocalDescription = function setLocalDescription() { var _this = this; var desc = arguments[0] || {}; if ((typeof desc === 'undefined' ? 'undefined' : _typeof(desc)) !== 'object' || desc.type && desc.sdp) { return nativeSetLocalDescription.apply(this, arguments); } // The remaining steps should technically happen when SLD comes off the // RTCPeerConnection's operations chain (not ahead of going on it), but // this is too difficult to shim. Instead, this shim only covers the // common case where the operations chain is empty. This is imperfect, but // should cover many cases. Rationale: Even if we can't reduce the glare // window to zero on imperfect implementations, there's value in tapping // into the perfect negotiation pattern that several browsers support. desc = { type: desc.type, sdp: desc.sdp }; if (!desc.type) { switch (this.signalingState) { case 'stable': case 'have-local-offer': case 'have-remote-pranswer': desc.type = 'offer'; break; default: desc.type = 'answer'; break; } } if (desc.sdp || desc.type !== 'offer' && desc.type !== 'answer') { return nativeSetLocalDescription.apply(this, [desc]); } var func = desc.type === 'offer' ? this.createOffer : this.createAnswer; return func.apply(this).then(function (d) { return nativeSetLocalDescription.apply(_this, [d]); }); }; } },{"./utils":11,"sdp":12}],7:[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.shimGetDisplayMedia = exports.shimGetUserMedia = undefined; var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; var _getusermedia = require('./getusermedia'); Object.defineProperty(exports, 'shimGetUserMedia', { enumerable: true, get: function get() { return _getusermedia.shimGetUserMedia; } }); var _getdisplaymedia = require('./getdisplaymedia'); Object.defineProperty(exports, 'shimGetDisplayMedia', { enumerable: true, get: function get() { return _getdisplaymedia.shimGetDisplayMedia; } }); 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; var _utils = require('../utils'); var utils = _interopRequireWildcard(_utils); function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; 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 shimOnTrack(window) { if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCTrackEvent && 'receiver' in window.RTCTrackEvent.prototype && !('transceiver' in window.RTCTrackEvent.prototype)) { Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', { get: function get() { return { receiver: this.receiver }; } }); } } function shimPeerConnection(window, browserDetails) { if ((typeof window === 'undefined' ? 'undefined' : _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 _arguments = Array.prototype.slice.call(arguments), selector = _arguments[0], onSucc = _arguments[1], onErr = _arguments[2]; 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 === 'undefined' ? 'undefined' : _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 === 'undefined' ? 'undefined' : _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 === 'undefined' ? 'undefined' : _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 = transceiver.sender; 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 === 'undefined' ? 'undefined' : _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 === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection)) { return; } var origCreateOffer = window.RTCPeerConnection.prototype.createOffer; window.RTCPeerConnection.prototype.createOffer = function createOffer() { var _this4 = this, _arguments2 = arguments; if (this.setParametersPromises && this.setParametersPromises.length) { return Promise.all(this.setParametersPromises).then(function () { return origCreateOffer.apply(_this4, _arguments2); }).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 === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCPeerConnection)) { return; } var origCreateAnswer = window.RTCPeerConnection.prototype.createAnswer; window.RTCPeerConnection.prototype.createAnswer = function createAnswer() { var _this5 = this, _arguments3 = arguments; if (this.setParametersPromises && this.setParametersPromises.length) { return Promise.all(this.setParametersPromises).then(function () { return origCreateAnswer.apply(_this5, _arguments3); }).finally(function () { _this5.setParametersPromises = []; }); } return origCreateAnswer.apply(this, arguments); }; } },{"../utils":11,"./getdisplaymedia":8,"./getusermedia":9}],8:[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); }; } },{}],9:[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 }); var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; exports.shimGetUserMedia = shimGetUserMedia; var _utils = require('../utils'); var utils = _interopRequireWildcard(_utils); function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } 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 remap(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 === 'undefined' ? 'undefined' : _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 === 'undefined' ? 'undefined' : _typeof(c)) === 'object') { c = JSON.parse(JSON.stringify(c)); remap(c, 'autoGainControl', 'mozAutoGainControl'); remap(c, 'noiseSuppression', 'mozNoiseSuppression'); } return nativeApplyConstraints.apply(this, [c]); }; } } } },{"../utils":11}],10:[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 }); var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; 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 = require('../utils'); var utils = _interopRequireWildcard(_utils); function _interopRequireWildcard(obj) { if (obj && obj.__esModule) { return obj; } else { var newObj = {}; if (obj != null) { for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) newObj[key] = obj[key]; } } newObj.default = obj; return newObj; } } function shimLocalStreamsAPI(window) { if ((typeof window === 'undefined' ? 'undefined' : _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 = 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 === 'undefined' ? 'undefined' : _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 get() { return this._onaddstream; }, set: function set(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 === 'undefined' ? 'undefined' : _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 withCallback(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 withCallback(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 withCallback(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 get() { return OrigPeerConnection.generateCertificate; } }); } } function shimTrackEventTransceiver(window) { // Add event.transceiver member over deprecated event.receiver if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) === 'object' && window.RTCTrackEvent && 'receiver' in window.RTCTrackEvent.prototype && !('transceiver' in window.RTCTrackEvent.prototype)) { Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', { get: function get() { 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', { direction: 'recvonly' }); } 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', { direction: 'recvonly' }); } } return origCreateOffer.apply(this, arguments); }; } function shimAudioContext(window) { if ((typeof window === 'undefined' ? 'undefined' : _typeof(window)) !== 'object' || window.AudioContext) { return; } window.AudioContext = window.webkitAudioContext; } },{"../utils":11}],11:[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 }); var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; 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; } 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 wrappedCallback(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 get() { return this['_on' + eventNameToWrap]; }, set: function set(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 === 'undefined' ? 'undefined' : _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 === 'undefined' ? 'undefined' : _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 = window.navigator; 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 (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; } },{}],12:[function(require,module,exports){ /* eslint-env node */ 'use strict'; // SDP helpers. var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; 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" // Input can be prefixed with a=. SDPUtils.parseCandidate = function (line) { var parts = void 0; // 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: { 1: 'rtp', 2: 'rtcp' }[parts[1]] || parts[1], 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 compatibility. candidate.usernameFragment = parts[i + 1]; break; default: // extension handling, in particular ufrag. Don't overwrite. if (candidate[parts[i]] === undefined) { candidate[parts[i]] = parts[i + 1]; } break; } } return candidate; }; // Translates a candidate object into SDP candidate attribute. // This does not include the a= prefix! SDPUtils.writeCandidate = function (candidate) { var sdp = []; sdp.push(candidate.foundation); var component = candidate.component; if (component === 'rtp') { sdp.push(1); } else if (component === 'rtcp') { sdp.push(2); } else { sdp.push(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. // Sample input: // a=ice-options:foo bar SDPUtils.parseIceOptions = function (line) { return line.substr(14).split(' '); }; // Parses a 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; }; // Generates 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 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 an 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 a fmtp 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 = void 0; 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 a fmtp 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] !== undefined) { params.push(param + '=' + codec.parameters[param]); } else { params.push(param); } }); line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\r\n'; } return line; }; // Parses a 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 a 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; }; // Parse a ssrc-group line (see RFC 5576). Sample input: // a=ssrc-group:semantics 12 34 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); } }; // Parses a fingerprint line for DTLS-SRTP. SDPUtils.parseFingerprint = function (line) { var parts = line.substr(14).split(' '); return { algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge. value: parts[1].toUpperCase() // the definition is upper-case in RFC 4572. }; }; // 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 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 parameters. 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) { var sdp = 'a=ice-ufrag:' + params.usernameFragment + '\r\n' + 'a=ice-pwd:' + params.password + '\r\n'; if (params.iceLite) { sdp += 'a=ice-lite\r\n'; } return sdp; }; // 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: 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'; } 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 = void 0; 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 that 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 attrŅ–bute. // Note that Edge does not support unmuxed RTCP. var mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux'); rtcpParameters.mux = mux.length > 0; return rtcpParameters; }; SDPUtils.writeRtcpParameters = function (rtcpParameters) { var sdp = ''; if (rtcpParameters.reducedSize) { sdp += 'a=rtcp-rsize\r\n'; } if (rtcpParameters.mux) { sdp += 'a=rtcp-mux\r\n'; } if (rtcpParameters.ssrc !== undefined && rtcpParameters.cname) { sdp += 'a=ssrc:' + rtcpParameters.ssrc + ' cname:' + rtcpParameters.cname + '\r\n'; } return sdp; }; // parses either a=msid: or a=ssrc:... msid lines and returns // the id of the MediaStream and MediaStreamTrack. SDPUtils.parseMsid = function (mediaSection) { var parts = void 0; 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 = void 0; 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 = sctpMapLines[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 boiler 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 = void 0; 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'; }; // 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 === 'undefined' ? 'undefined' : _typeof(module)) === 'object') { module.exports = SDPUtils; } },{}]},{},[1])(1) });