var ZLMRTCClient = (function (exports) { 'use strict'; const Events$1 = { WEBRTC_NOT_SUPPORT: 'WEBRTC_NOT_SUPPORT', WEBRTC_ICE_CANDIDATE_ERROR: 'WEBRTC_ICE_CANDIDATE_ERROR', WEBRTC_OFFER_ANWSER_EXCHANGE_FAILED: 'WEBRTC_OFFER_ANWSER_EXCHANGE_FAILED', WEBRTC_ON_REMOTE_STREAMS: 'WEBRTC_ON_REMOTE_STREAMS', WEBRTC_ON_LOCAL_STREAM: 'WEBRTC_ON_LOCAL_STREAM' }; const VERSION = '1.0.1'; const BUILD_DATE = 'Mon Apr 05 2021 10:22:48 GMT+0800 (中国标准时间)'; // Copyright (C) <2018> Intel Corporation // // SPDX-License-Identifier: Apache-2.0 // eslint-disable-next-line require-jsdoc function isFirefox() { return window.navigator.userAgent.match('Firefox') !== null; } // eslint-disable-next-line require-jsdoc function isChrome() { return window.navigator.userAgent.match('Chrome') !== null; } // eslint-disable-next-line require-jsdoc function isEdge() { return window.navigator.userAgent.match(/Edge\/(\d+).(\d+)$/) !== null; } // eslint-disable-next-line require-jsdoc // Copyright (C) <2018> Intel Corporation /** * @class AudioSourceInfo * @classDesc Source info about an audio track. Values: 'mic', 'screen-cast', 'file', 'mixed'. * @memberOf Owt.Base * @readonly * @enum {string} */ const AudioSourceInfo = { MIC: 'mic', SCREENCAST: 'screen-cast', FILE: 'file', MIXED: 'mixed' }; /** * @class VideoSourceInfo * @classDesc Source info about a video track. Values: 'camera', 'screen-cast', 'file', 'mixed'. * @memberOf Owt.Base * @readonly * @enum {string} */ const VideoSourceInfo = { CAMERA: 'camera', SCREENCAST: 'screen-cast', FILE: 'file', MIXED: 'mixed' }; /** * @class TrackKind * @classDesc Kind of a track. Values: 'audio' for audio track, 'video' for video track, 'av' for both audio and video tracks. * @memberOf Owt.Base * @readonly * @enum {string} */ const TrackKind = { /** * Audio tracks. * @type string */ AUDIO: 'audio', /** * Video tracks. * @type string */ VIDEO: 'video', /** * Both audio and video tracks. * @type string */ AUDIO_AND_VIDEO: 'av' }; /** * @class Resolution * @memberOf Owt.Base * @classDesc The Resolution defines the size of a rectangle. * @constructor * @param {number} width * @param {number} height */ class Resolution { // eslint-disable-next-line require-jsdoc constructor(width, height) { /** * @member {number} width * @instance * @memberof Owt.Base.Resolution */ this.width = width; /** * @member {number} height * @instance * @memberof Owt.Base.Resolution */ this.height = height; } } /* * 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. */ let logDisabled_ = true; let 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) { const 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; } const proto = window.RTCPeerConnection.prototype; const nativeAddEventListener = proto.addEventListener; proto.addEventListener = function(nativeEventName, cb) { if (nativeEventName !== eventNameToWrap) { return nativeAddEventListener.apply(this, arguments); } const wrappedCallback = (e) => { const 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]); }; const 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); } const 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() { return this['_on' + eventNameToWrap]; }, 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 + '. Please use a boolean.'); } logDisabled_ = bool; return (bool) ? 'adapter.js logging disabled' : 'adapter.js logging enabled'; } /** * Disable or enable deprecation warnings * @param {!boolean} bool set to true to disable warnings. */ function disableWarnings(bool) { if (typeof bool !== 'boolean') { return new Error('Argument type: ' + typeof bool + '. Please use a boolean.'); } deprecationWarnings_ = !bool; return 'adapter.js deprecation warnings ' + (bool ? 'disabled' : 'enabled'); } function log$1() { if (typeof window === 'object') { if (logDisabled_) { return; } if (typeof console !== 'undefined' && typeof console.log === 'function') { console.log.apply(console, arguments); } } } /** * Shows a deprecation warning suggesting the modern and spec-compatible API. */ function deprecated(oldMethod, newMethod) { if (!deprecationWarnings_) { return; } console.warn(oldMethod + ' is deprecated, please use ' + newMethod + ' instead.'); } /** * Browser detector. * * @return {object} result containing browser and version * properties. */ function detectBrowser(window) { // Returned result object. const result = {browser: null, version: null}; // Fail early if it's not a browser if (typeof window === 'undefined' || !window.navigator) { result.browser = 'Not a browser.'; return result; } const {navigator} = window; if (navigator.mozGetUserMedia) { // Firefox. result.browser = 'firefox'; result.version = extractVersion(navigator.userAgent, /Firefox\/(\d+)\./, 1); } else if (navigator.webkitGetUserMedia || (window.isSecureContext === false && window.webkitRTCPeerConnection && !window.RTCIceGatherer)) { // Chrome, Chromium, Webview, Opera. // Version matches Chrome/WebRTC version. // Chrome 74 removed webkitGetUserMedia on http as well so we need the // more complicated fallback to webkitRTCPeerConnection. result.browser = 'chrome'; result.version = extractVersion(navigator.userAgent, /Chrom(e|ium)\/(\d+)\./, 2); } else if (navigator.mediaDevices && navigator.userAgent.match(/Edge\/(\d+).(\d+)$/)) { // Edge. result.browser = 'edge'; result.version = extractVersion(navigator.userAgent, /Edge\/(\d+).(\d+)$/, 2); } else if (window.RTCPeerConnection && navigator.userAgent.match(/AppleWebKit\/(\d+)\./)) { // Safari. result.browser = 'safari'; result.version = extractVersion(navigator.userAgent, /AppleWebKit\/(\d+)\./, 1); result.supportsUnifiedPlan = window.RTCRtpTransceiver && 'currentDirection' in window.RTCRtpTransceiver.prototype; } else { // Default fallthrough: not supported. result.browser = 'Not a supported browser.'; return result; } return result; } /** * Checks if something is an object. * * @param {*} val The something you want to check. * @return true if val is an object, false otherwise. */ function isObject$1(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$1(data)) { return data; } return Object.keys(data).reduce(function(accumulator, key) { const isObj = isObject$1(data[key]); const value = isObj ? compactObject(data[key]) : data[key]; const isEmptyObject = isObj && !Object.keys(value).length; if (value === undefined || isEmptyObject) { return accumulator; } return Object.assign(accumulator, {[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(name => { if (name.endsWith('Id')) { walkStats(stats, stats.get(base[name]), resultSet); } else if (name.endsWith('Ids')) { base[name].forEach(id => { walkStats(stats, stats.get(id), resultSet); }); } }); } /* filter getStats for a sender/receiver track. */ function filterStats(result, track, outbound) { const streamStatsType = outbound ? 'outbound-rtp' : 'inbound-rtp'; const filteredResult = new Map(); if (track === null) { return filteredResult; } const trackStats = []; result.forEach(value => { if (value.type === 'track' && value.trackIdentifier === track.id) { trackStats.push(value); } }); trackStats.forEach(trackStat => { result.forEach(stats => { if (stats.type === streamStatsType && stats.trackId === trackStat.id) { walkStats(result, stats, filteredResult); } }); }); return filteredResult; } /* * 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. */ const logging = log$1; function shimGetUserMedia$3(window, browserDetails) { const navigator = window && window.navigator; if (!navigator.mediaDevices) { return; } const constraintsToChrome_ = function(c) { if (typeof c !== 'object' || c.mandatory || c.optional) { return c; } const cc = {}; Object.keys(c).forEach(key => { if (key === 'require' || key === 'advanced' || key === 'mediaSource') { return; } const r = (typeof c[key] === 'object') ? c[key] : {ideal: c[key]}; if (r.exact !== undefined && typeof r.exact === 'number') { r.min = r.max = r.exact; } const oldname_ = function(prefix, name) { if (prefix) { return prefix + name.charAt(0).toUpperCase() + name.slice(1); } return (name === 'deviceId') ? 'sourceId' : name; }; if (r.ideal !== undefined) { cc.optional = cc.optional || []; let 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(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; }; const shimConstraints_ = function(constraints, func) { if (browserDetails.version >= 61) { return func(constraints); } constraints = JSON.parse(JSON.stringify(constraints)); if (constraints && typeof constraints.audio === 'object') { const remap = function(obj, a, b) { if (a in obj && !(b in obj)) { obj[b] = obj[a]; delete obj[a]; } }; constraints = JSON.parse(JSON.stringify(constraints)); remap(constraints.audio, 'autoGainControl', 'googAutoGainControl'); remap(constraints.audio, 'noiseSuppression', 'googNoiseSuppression'); constraints.audio = constraintsToChrome_(constraints.audio); } if (constraints && typeof constraints.video === 'object') { // Shim facingMode for mobile & surface pro. let face = constraints.video.facingMode; face = face && ((typeof face === 'object') ? face : {ideal: face}); const 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; let matches; if (face.exact === 'environment' || face.ideal === 'environment') { matches = ['back', 'rear']; } else if (face.exact === 'user' || face.ideal === 'user') { matches = ['front']; } if (matches) { // Look for matches in label, or use last cam for back (typical). return navigator.mediaDevices.enumerateDevices() .then(devices => { devices = devices.filter(d => d.kind === 'videoinput'); let dev = devices.find(d => matches.some(match => 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); }; const shimError_ = function(e) { if (browserDetails.version >= 64) { return e; } return { name: { PermissionDeniedError: 'NotAllowedError', PermissionDismissedError: 'NotAllowedError', InvalidStateError: 'NotAllowedError', DevicesNotFoundError: 'NotFoundError', ConstraintNotSatisfiedError: 'OverconstrainedError', TrackStartError: 'NotReadableError', MediaDeviceFailedDueToShutdown: 'NotAllowedError', MediaDeviceKillSwitchOn: 'NotAllowedError', TabCaptureError: 'AbortError', ScreenCaptureError: 'AbortError', DeviceCaptureError: 'AbortError' }[e.name] || e.name, message: e.message, constraint: e.constraint || e.constraintName, toString() { return this.name + (this.message && ': ') + this.message; } }; }; const getUserMedia_ = function(constraints, onSuccess, onError) { shimConstraints_(constraints, c => { navigator.webkitGetUserMedia(c, onSuccess, 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) { const origGetUserMedia = navigator.mediaDevices.getUserMedia. bind(navigator.mediaDevices); navigator.mediaDevices.getUserMedia = function(cs) { return shimConstraints_(cs, c => origGetUserMedia(c).then(stream => { if (c.audio && !stream.getAudioTracks().length || c.video && !stream.getVideoTracks().length) { stream.getTracks().forEach(track => { track.stop(); }); throw new DOMException('', 'NotFoundError'); } return stream; }, e => Promise.reject(shimError_(e)))); }; } } /* * 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. */ function shimGetDisplayMedia$2(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(sourceId => { const widthSpecified = constraints.video && constraints.video.width; const heightSpecified = constraints.video && constraints.video.height; const 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); }); }; } /* * 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. */ function shimMediaStream(window) { window.MediaStream = window.MediaStream || window.webkitMediaStream; } function shimOnTrack$1(window) { if (typeof window === 'object' && window.RTCPeerConnection && !('ontrack' in window.RTCPeerConnection.prototype)) { Object.defineProperty(window.RTCPeerConnection.prototype, 'ontrack', { get() { return this._ontrack; }, set(f) { if (this._ontrack) { this.removeEventListener('track', this._ontrack); } this.addEventListener('track', this._ontrack = f); }, enumerable: true, configurable: true }); const origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription; window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() { if (!this._ontrackpoly) { this._ontrackpoly = (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', te => { let receiver; if (window.RTCPeerConnection.prototype.getReceivers) { receiver = this.getReceivers() .find(r => r.track && r.track.id === te.track.id); } else { receiver = {track: te.track}; } const event = new Event('track'); event.track = te.track; event.receiver = receiver; event.transceiver = {receiver}; event.streams = [e.stream]; this.dispatchEvent(event); }); e.stream.getTracks().forEach(track => { let receiver; if (window.RTCPeerConnection.prototype.getReceivers) { receiver = this.getReceivers() .find(r => r.track && r.track.id === track.id); } else { receiver = {track}; } const event = new Event('track'); event.track = track; event.receiver = receiver; event.transceiver = {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. wrapPeerConnectionEvent(window, 'track', e => { if (!e.transceiver) { Object.defineProperty(e, 'transceiver', {value: {receiver: e.receiver}}); } return e; }); } } function shimGetSendersWithDtmf(window) { // Overrides addTrack/removeTrack, depends on shimAddTrackRemoveTrack. if (typeof window === 'object' && window.RTCPeerConnection && !('getSenders' in window.RTCPeerConnection.prototype) && 'createDTMFSender' in window.RTCPeerConnection.prototype) { const shimSenderWithDtmf = function(pc, track) { return { 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. }; const origAddTrack = window.RTCPeerConnection.prototype.addTrack; window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) { let sender = origAddTrack.apply(this, arguments); if (!sender) { sender = shimSenderWithDtmf(this, track); this._senders.push(sender); } return sender; }; const origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack; window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) { origRemoveTrack.apply(this, arguments); const idx = this._senders.indexOf(sender); if (idx !== -1) { this._senders.splice(idx, 1); } }; } const origAddStream = window.RTCPeerConnection.prototype.addStream; window.RTCPeerConnection.prototype.addStream = function addStream(stream) { this._senders = this._senders || []; origAddStream.apply(this, [stream]); stream.getTracks().forEach(track => { this._senders.push(shimSenderWithDtmf(this, track)); }); }; const origRemoveStream = window.RTCPeerConnection.prototype.removeStream; window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) { this._senders = this._senders || []; origRemoveStream.apply(this, [stream]); stream.getTracks().forEach(track => { const sender = this._senders.find(s => s.track === track); if (sender) { // remove sender this._senders.splice(this._senders.indexOf(sender), 1); } }); }; } else if (typeof window === 'object' && window.RTCPeerConnection && 'getSenders' in window.RTCPeerConnection.prototype && 'createDTMFSender' in window.RTCPeerConnection.prototype && window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) { const origGetSenders = window.RTCPeerConnection.prototype.getSenders; window.RTCPeerConnection.prototype.getSenders = function getSenders() { const senders = origGetSenders.apply(this, []); senders.forEach(sender => sender._pc = this); return senders; }; Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', { 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; } const origGetStats = window.RTCPeerConnection.prototype.getStats; window.RTCPeerConnection.prototype.getStats = function getStats() { const [selector, onSucc, onErr] = arguments; // If selector is a function then we are in the old style stats so just // pass back the original getStats format to avoid breaking old users. if (arguments.length > 0 && typeof selector === 'function') { return origGetStats.apply(this, arguments); } // When spec-style getStats is supported, return those when called with // either no arguments or the selector argument is null. if (origGetStats.length === 0 && (arguments.length === 0 || typeof selector !== 'function')) { return origGetStats.apply(this, []); } const fixChromeStats_ = function(response) { const standardReport = {}; const reports = response.result(); reports.forEach(report => { const standardStats = { id: report.id, timestamp: report.timestamp, type: { localcandidate: 'local-candidate', remotecandidate: 'remote-candidate' }[report.type] || report.type }; report.names().forEach(name => { standardStats[name] = report.stat(name); }); standardReport[standardStats.id] = standardStats; }); return standardReport; }; // shim getStats with maplike support const makeMapStats = function(stats) { return new Map(Object.keys(stats).map(key => [key, stats[key]])); }; if (arguments.length >= 2) { const successCallbackWrapper_ = function(response) { onSucc(makeMapStats(fixChromeStats_(response))); }; return origGetStats.apply(this, [successCallbackWrapper_, selector]); } // promise-support return new Promise((resolve, reject) => { origGetStats.apply(this, [ function(response) { resolve(makeMapStats(fixChromeStats_(response))); }, reject]); }).then(onSucc, onErr); }; } function shimSenderReceiverGetStats(window) { if (!(typeof window === 'object' && window.RTCPeerConnection && window.RTCRtpSender && window.RTCRtpReceiver)) { return; } // shim sender stats. if (!('getStats' in window.RTCRtpSender.prototype)) { const origGetSenders = window.RTCPeerConnection.prototype.getSenders; if (origGetSenders) { window.RTCPeerConnection.prototype.getSenders = function getSenders() { const senders = origGetSenders.apply(this, []); senders.forEach(sender => sender._pc = this); return senders; }; } const origAddTrack = window.RTCPeerConnection.prototype.addTrack; if (origAddTrack) { window.RTCPeerConnection.prototype.addTrack = function addTrack() { const sender = origAddTrack.apply(this, arguments); sender._pc = this; return sender; }; } window.RTCRtpSender.prototype.getStats = function getStats() { const sender = this; return this._pc.getStats().then(result => /* 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. */ filterStats(result, sender.track, true)); }; } // shim receiver stats. if (!('getStats' in window.RTCRtpReceiver.prototype)) { const origGetReceivers = window.RTCPeerConnection.prototype.getReceivers; if (origGetReceivers) { window.RTCPeerConnection.prototype.getReceivers = function getReceivers() { const receivers = origGetReceivers.apply(this, []); receivers.forEach(receiver => receiver._pc = this); return receivers; }; } wrapPeerConnectionEvent(window, 'track', e => { e.receiver._pc = e.srcElement; return e; }); window.RTCRtpReceiver.prototype.getStats = function getStats() { const receiver = this; return this._pc.getStats().then(result => filterStats(result, receiver.track, false)); }; } if (!('getStats' in window.RTCRtpSender.prototype && 'getStats' in window.RTCRtpReceiver.prototype)) { return; } // shim RTCPeerConnection.getStats(track). const origGetStats = window.RTCPeerConnection.prototype.getStats; window.RTCPeerConnection.prototype.getStats = function getStats() { if (arguments.length > 0 && arguments[0] instanceof window.MediaStreamTrack) { const track = arguments[0]; let sender; let receiver; let err; this.getSenders().forEach(s => { if (s.track === track) { if (sender) { err = true; } else { sender = s; } } }); this.getReceivers().forEach(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() { this._shimmedLocalStreams = this._shimmedLocalStreams || {}; return Object.keys(this._shimmedLocalStreams) .map(streamId => this._shimmedLocalStreams[streamId][0]); }; const origAddTrack = window.RTCPeerConnection.prototype.addTrack; window.RTCPeerConnection.prototype.addTrack = function addTrack(track, stream) { if (!stream) { return origAddTrack.apply(this, arguments); } this._shimmedLocalStreams = this._shimmedLocalStreams || {}; const 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; }; const origAddStream = window.RTCPeerConnection.prototype.addStream; window.RTCPeerConnection.prototype.addStream = function addStream(stream) { this._shimmedLocalStreams = this._shimmedLocalStreams || {}; stream.getTracks().forEach(track => { const alreadyExists = this.getSenders().find(s => s.track === track); if (alreadyExists) { throw new DOMException('Track already exists.', 'InvalidAccessError'); } }); const existingSenders = this.getSenders(); origAddStream.apply(this, arguments); const newSenders = this.getSenders() .filter(newSender => existingSenders.indexOf(newSender) === -1); this._shimmedLocalStreams[stream.id] = [stream].concat(newSenders); }; const 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); }; const origRemoveTrack = window.RTCPeerConnection.prototype.removeTrack; window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) { this._shimmedLocalStreams = this._shimmedLocalStreams || {}; if (sender) { Object.keys(this._shimmedLocalStreams).forEach(streamId => { const idx = this._shimmedLocalStreams[streamId].indexOf(sender); if (idx !== -1) { this._shimmedLocalStreams[streamId].splice(idx, 1); } if (this._shimmedLocalStreams[streamId].length === 1) { delete this._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. const origGetLocalStreams = window.RTCPeerConnection.prototype .getLocalStreams; window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() { const nativeStreams = origGetLocalStreams.apply(this); this._reverseStreams = this._reverseStreams || {}; return nativeStreams.map(stream => this._reverseStreams[stream.id]); }; const origAddStream = window.RTCPeerConnection.prototype.addStream; window.RTCPeerConnection.prototype.addStream = function addStream(stream) { this._streams = this._streams || {}; this._reverseStreams = this._reverseStreams || {}; stream.getTracks().forEach(track => { const alreadyExists = this.getSenders().find(s => 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]) { const newStream = new window.MediaStream(stream.getTracks()); this._streams[stream.id] = newStream; this._reverseStreams[newStream.id] = stream; stream = newStream; } origAddStream.apply(this, [stream]); }; const 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) { if (this.signalingState === 'closed') { throw new DOMException( 'The RTCPeerConnection\'s signalingState is \'closed\'.', 'InvalidStateError'); } const streams = [].slice.call(arguments, 1); if (streams.length !== 1 || !streams[0].getTracks().find(t => 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'); } const alreadyExists = this.getSenders().find(s => s.track === track); if (alreadyExists) { throw new DOMException('Track already exists.', 'InvalidAccessError'); } this._streams = this._streams || {}; this._reverseStreams = this._reverseStreams || {}; const 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(() => { this.dispatchEvent(new Event('negotiationneeded')); }); } else { const newStream = new window.MediaStream([track]); this._streams[stream.id] = newStream; this._reverseStreams[newStream.id] = stream; this.addStream(newStream); } return this.getSenders().find(s => s.track === track); }; // replace the internal stream id with the external one and // vice versa. function replaceInternalStreamId(pc, description) { let sdp = description.sdp; Object.keys(pc._reverseStreams || []).forEach(internalId => { const externalStream = pc._reverseStreams[internalId]; const internalStream = pc._streams[externalStream.id]; sdp = sdp.replace(new RegExp(internalStream.id, 'g'), externalStream.id); }); return new RTCSessionDescription({ type: description.type, sdp }); } function replaceExternalStreamId(pc, description) { let sdp = description.sdp; Object.keys(pc._reverseStreams || []).forEach(internalId => { const externalStream = pc._reverseStreams[internalId]; const internalStream = pc._streams[externalStream.id]; sdp = sdp.replace(new RegExp(externalStream.id, 'g'), internalStream.id); }); return new RTCSessionDescription({ type: description.type, sdp }); } ['createOffer', 'createAnswer'].forEach(function(method) { const nativeMethod = window.RTCPeerConnection.prototype[method]; const methodObj = {[method]() { const args = arguments; const isLegacyCall = arguments.length && typeof arguments[0] === 'function'; if (isLegacyCall) { return nativeMethod.apply(this, [ (description) => { const desc = replaceInternalStreamId(this, description); args[0].apply(null, [desc]); }, (err) => { if (args[1]) { args[1].apply(null, err); } }, arguments[2] ]); } return nativeMethod.apply(this, arguments) .then(description => replaceInternalStreamId(this, description)); }}; window.RTCPeerConnection.prototype[method] = methodObj[method]; }); const 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 const origLocalDescription = Object.getOwnPropertyDescriptor( window.RTCPeerConnection.prototype, 'localDescription'); Object.defineProperty(window.RTCPeerConnection.prototype, 'localDescription', { get() { const description = origLocalDescription.get.apply(this); if (description.type === '') { return description; } return replaceInternalStreamId(this, description); } }); window.RTCPeerConnection.prototype.removeTrack = function removeTrack(sender) { 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'); } const 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 || {}; let stream; Object.keys(this._streams).forEach(streamid => { const hasTrack = this._streams[streamid].getTracks() .find(track => sender.track === track); if (hasTrack) { stream = this._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$2(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) { const nativeMethod = window.RTCPeerConnection.prototype[method]; const methodObj = {[method]() { 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) { wrapPeerConnectionEvent(window, 'negotiationneeded', e => { const pc = e.target; if (browserDetails.version < 72 || (pc.getConfiguration && pc.getConfiguration().sdpSemantics === 'plan-b')) { if (pc.signalingState !== 'stable') { return; } } return e; }); } var chromeShim = /*#__PURE__*/Object.freeze({ __proto__: null, shimMediaStream: shimMediaStream, shimOnTrack: shimOnTrack$1, shimGetSendersWithDtmf: shimGetSendersWithDtmf, shimGetStats: shimGetStats, shimSenderReceiverGetStats: shimSenderReceiverGetStats, shimAddTrackRemoveTrackWithNative: shimAddTrackRemoveTrackWithNative, shimAddTrackRemoveTrack: shimAddTrackRemoveTrack, shimPeerConnection: shimPeerConnection$2, fixNegotiationNeeded: fixNegotiationNeeded, shimGetUserMedia: shimGetUserMedia$3, shimGetDisplayMedia: shimGetDisplayMedia$2 }); /* * Copyright (c) 2018 The WebRTC project authors. All Rights Reserved. * * Use of this source code is governed by a BSD-style license * that can be found in the LICENSE file in the root of the source * tree. */ // Edge does not like // 1) stun: filtered after 14393 unless ?transport=udp is present // 2) turn: that does not have all of turn:host:port?transport=udp // 3) turn: with ipv6 addresses // 4) turn: occurring muliple times function filterIceServers$1(iceServers, edgeVersion) { let hasTurn = false; iceServers = JSON.parse(JSON.stringify(iceServers)); return iceServers.filter(server => { if (server && (server.urls || server.url)) { let urls = server.urls || server.url; if (server.url && !server.urls) { deprecated('RTCIceServer.url', 'RTCIceServer.urls'); } const isString = typeof urls === 'string'; if (isString) { urls = [urls]; } urls = urls.filter(url => { // filter STUN unconditionally. if (url.indexOf('stun:') === 0) { return false; } const validTurn = url.startsWith('turn') && !url.startsWith('turn:[') && url.includes('transport=udp'); if (validTurn && !hasTurn) { hasTurn = true; return true; } return validTurn && !hasTurn; }); delete server.url; server.urls = isString ? urls[0] : urls; return !!urls.length; } }); } function createCommonjsModule(fn) { var module = { exports: {} }; return fn(module, module.exports), module.exports; } /* eslint-env node */ var sdp = createCommonjsModule(function (module) { // SDP helpers. var SDPUtils = {}; // Generate an alphanumeric identifier for cname or mids. // TODO: use UUIDs instead? https://gist.github.com/jed/982883 SDPUtils.generateIdentifier = function() { return Math.random().toString(36).substr(2, 10); }; // The RTCP CNAME used by all peerconnections from the same JS. SDPUtils.localCName = SDPUtils.generateIdentifier(); // Splits SDP into lines, dealing with both CRLF and LF. SDPUtils.splitLines = function(blob) { return blob.trim().split('\n').map(function(line) { return line.trim(); }); }; // Splits SDP into sessionpart and mediasections. Ensures CRLF. SDPUtils.splitSections = function(blob) { var parts = blob.split('\nm='); return parts.map(function(part, index) { return (index > 0 ? 'm=' + part : part).trim() + '\r\n'; }); }; // returns the session description. SDPUtils.getDescription = function(blob) { var sections = SDPUtils.splitSections(blob); return sections && sections[0]; }; // returns the individual media sections. SDPUtils.getMediaSections = function(blob) { var sections = SDPUtils.splitSections(blob); sections.shift(); return sections; }; // Returns lines that start with a certain prefix. SDPUtils.matchPrefix = function(blob, prefix) { return SDPUtils.splitLines(blob).filter(function(line) { return line.indexOf(prefix) === 0; }); }; // Parses an ICE candidate line. Sample input: // candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8 // rport 55996" SDPUtils.parseCandidate = function(line) { var parts; // Parse both variants. if (line.indexOf('a=candidate:') === 0) { parts = line.substring(12).split(' '); } else { parts = line.substring(10).split(' '); } var candidate = { foundation: parts[0], component: parseInt(parts[1], 10), protocol: parts[2].toLowerCase(), priority: parseInt(parts[3], 10), ip: parts[4], address: parts[4], // address is an alias for ip. port: parseInt(parts[5], 10), // skip parts[6] == 'typ' type: parts[7] }; for (var i = 8; i < parts.length; i += 2) { switch (parts[i]) { case 'raddr': candidate.relatedAddress = parts[i + 1]; break; case 'rport': candidate.relatedPort = parseInt(parts[i + 1], 10); break; case 'tcptype': candidate.tcpType = parts[i + 1]; break; case 'ufrag': candidate.ufrag = parts[i + 1]; // for backward compability. candidate.usernameFragment = parts[i + 1]; break; default: // extension handling, in particular ufrag candidate[parts[i]] = parts[i + 1]; break; } } return candidate; }; // Translates a candidate object into SDP candidate attribute. SDPUtils.writeCandidate = function(candidate) { var sdp = []; sdp.push(candidate.foundation); sdp.push(candidate.component); sdp.push(candidate.protocol.toUpperCase()); sdp.push(candidate.priority); sdp.push(candidate.address || candidate.ip); sdp.push(candidate.port); var type = candidate.type; sdp.push('typ'); sdp.push(type); if (type !== 'host' && candidate.relatedAddress && candidate.relatedPort) { sdp.push('raddr'); sdp.push(candidate.relatedAddress); sdp.push('rport'); sdp.push(candidate.relatedPort); } if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') { sdp.push('tcptype'); sdp.push(candidate.tcpType); } if (candidate.usernameFragment || candidate.ufrag) { sdp.push('ufrag'); sdp.push(candidate.usernameFragment || candidate.ufrag); } return 'candidate:' + sdp.join(' '); }; // Parses an ice-options line, returns an array of option tags. // a=ice-options:foo bar SDPUtils.parseIceOptions = function(line) { return line.substr(14).split(' '); }; // Parses an rtpmap line, returns RTCRtpCoddecParameters. Sample input: // a=rtpmap:111 opus/48000/2 SDPUtils.parseRtpMap = function(line) { var parts = line.substr(9).split(' '); var parsed = { payloadType: parseInt(parts.shift(), 10) // was: id }; parts = parts[0].split('/'); parsed.name = parts[0]; parsed.clockRate = parseInt(parts[1], 10); // was: clockrate parsed.channels = parts.length === 3 ? parseInt(parts[2], 10) : 1; // legacy alias, got renamed back to channels in ORTC. parsed.numChannels = parsed.channels; return parsed; }; // Generate an a=rtpmap line from RTCRtpCodecCapability or // RTCRtpCodecParameters. SDPUtils.writeRtpMap = function(codec) { var pt = codec.payloadType; if (codec.preferredPayloadType !== undefined) { pt = codec.preferredPayloadType; } var channels = codec.channels || codec.numChannels || 1; return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate + (channels !== 1 ? '/' + channels : '') + '\r\n'; }; // Parses an a=extmap line (headerextension from RFC 5285). Sample input: // a=extmap:2 urn:ietf:params:rtp-hdrext:toffset // a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset SDPUtils.parseExtmap = function(line) { var parts = line.substr(9).split(' '); return { id: parseInt(parts[0], 10), direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv', uri: parts[1] }; }; // Generates a=extmap line from RTCRtpHeaderExtensionParameters or // RTCRtpHeaderExtension. SDPUtils.writeExtmap = function(headerExtension) { return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) + (headerExtension.direction && headerExtension.direction !== 'sendrecv' ? '/' + headerExtension.direction : '') + ' ' + headerExtension.uri + '\r\n'; }; // Parses an ftmp line, returns dictionary. Sample input: // a=fmtp:96 vbr=on;cng=on // Also deals with vbr=on; cng=on SDPUtils.parseFmtp = function(line) { var parsed = {}; var kv; var parts = line.substr(line.indexOf(' ') + 1).split(';'); for (var j = 0; j < parts.length; j++) { kv = parts[j].trim().split('='); parsed[kv[0].trim()] = kv[1]; } return parsed; }; // Generates an a=ftmp line from RTCRtpCodecCapability or RTCRtpCodecParameters. SDPUtils.writeFmtp = function(codec) { var line = ''; var pt = codec.payloadType; if (codec.preferredPayloadType !== undefined) { pt = codec.preferredPayloadType; } if (codec.parameters && Object.keys(codec.parameters).length) { var params = []; Object.keys(codec.parameters).forEach(function(param) { if (codec.parameters[param]) { params.push(param + '=' + codec.parameters[param]); } else { params.push(param); } }); line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\r\n'; } return line; }; // Parses an rtcp-fb line, returns RTCPRtcpFeedback object. Sample input: // a=rtcp-fb:98 nack rpsi SDPUtils.parseRtcpFb = function(line) { var parts = line.substr(line.indexOf(' ') + 1).split(' '); return { type: parts.shift(), parameter: parts.join(' ') }; }; // Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters. SDPUtils.writeRtcpFb = function(codec) { var lines = ''; var pt = codec.payloadType; if (codec.preferredPayloadType !== undefined) { pt = codec.preferredPayloadType; } if (codec.rtcpFeedback && codec.rtcpFeedback.length) { // FIXME: special handling for trr-int? codec.rtcpFeedback.forEach(function(fb) { lines += 'a=rtcp-fb:' + pt + ' ' + fb.type + (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') + '\r\n'; }); } return lines; }; // Parses an RFC 5576 ssrc media attribute. Sample input: // a=ssrc:3735928559 cname:something SDPUtils.parseSsrcMedia = function(line) { var sp = line.indexOf(' '); var parts = { ssrc: parseInt(line.substr(7, sp - 7), 10) }; var colon = line.indexOf(':', sp); if (colon > -1) { parts.attribute = line.substr(sp + 1, colon - sp - 1); parts.value = line.substr(colon + 1); } else { parts.attribute = line.substr(sp + 1); } return parts; }; SDPUtils.parseSsrcGroup = function(line) { var parts = line.substr(13).split(' '); return { semantics: parts.shift(), ssrcs: parts.map(function(ssrc) { return parseInt(ssrc, 10); }) }; }; // Extracts the MID (RFC 5888) from a media section. // returns the MID or undefined if no mid line was found. SDPUtils.getMid = function(mediaSection) { var mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0]; if (mid) { return mid.substr(6); } }; SDPUtils.parseFingerprint = function(line) { var parts = line.substr(14).split(' '); return { algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge. value: parts[1] }; }; // Extracts DTLS parameters from SDP media section or sessionpart. // FIXME: for consistency with other functions this should only // get the fingerprint line as input. See also getIceParameters. SDPUtils.getDtlsParameters = function(mediaSection, sessionpart) { var lines = SDPUtils.matchPrefix(mediaSection + sessionpart, 'a=fingerprint:'); // Note: a=setup line is ignored since we use the 'auto' role. // Note2: 'algorithm' is not case sensitive except in Edge. return { role: 'auto', fingerprints: lines.map(SDPUtils.parseFingerprint) }; }; // Serializes DTLS parameters to SDP. SDPUtils.writeDtlsParameters = function(params, setupType) { var sdp = 'a=setup:' + setupType + '\r\n'; params.fingerprints.forEach(function(fp) { sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\r\n'; }); return sdp; }; // Parses a=crypto lines into // https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#dictionary-rtcsrtpsdesparameters-members SDPUtils.parseCryptoLine = function(line) { var parts = line.substr(9).split(' '); return { tag: parseInt(parts[0], 10), cryptoSuite: parts[1], keyParams: parts[2], sessionParams: parts.slice(3), }; }; SDPUtils.writeCryptoLine = function(parameters) { return 'a=crypto:' + parameters.tag + ' ' + parameters.cryptoSuite + ' ' + (typeof parameters.keyParams === 'object' ? SDPUtils.writeCryptoKeyParams(parameters.keyParams) : parameters.keyParams) + (parameters.sessionParams ? ' ' + parameters.sessionParams.join(' ') : '') + '\r\n'; }; // Parses the crypto key parameters into // https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#rtcsrtpkeyparam* SDPUtils.parseCryptoKeyParams = function(keyParams) { if (keyParams.indexOf('inline:') !== 0) { return null; } var parts = keyParams.substr(7).split('|'); return { keyMethod: 'inline', keySalt: parts[0], lifeTime: parts[1], mkiValue: parts[2] ? parts[2].split(':')[0] : undefined, mkiLength: parts[2] ? parts[2].split(':')[1] : undefined, }; }; SDPUtils.writeCryptoKeyParams = function(keyParams) { return keyParams.keyMethod + ':' + keyParams.keySalt + (keyParams.lifeTime ? '|' + keyParams.lifeTime : '') + (keyParams.mkiValue && keyParams.mkiLength ? '|' + keyParams.mkiValue + ':' + keyParams.mkiLength : ''); }; // Extracts all SDES paramters. SDPUtils.getCryptoParameters = function(mediaSection, sessionpart) { var lines = SDPUtils.matchPrefix(mediaSection + sessionpart, 'a=crypto:'); return lines.map(SDPUtils.parseCryptoLine); }; // Parses ICE information from SDP media section or sessionpart. // FIXME: for consistency with other functions this should only // get the ice-ufrag and ice-pwd lines as input. SDPUtils.getIceParameters = function(mediaSection, sessionpart) { var ufrag = SDPUtils.matchPrefix(mediaSection + sessionpart, 'a=ice-ufrag:')[0]; var pwd = SDPUtils.matchPrefix(mediaSection + sessionpart, 'a=ice-pwd:')[0]; if (!(ufrag && pwd)) { return null; } return { usernameFragment: ufrag.substr(12), password: pwd.substr(10), }; }; // Serializes ICE parameters to SDP. SDPUtils.writeIceParameters = function(params) { return 'a=ice-ufrag:' + params.usernameFragment + '\r\n' + 'a=ice-pwd:' + params.password + '\r\n'; }; // Parses the SDP media section and returns RTCRtpParameters. SDPUtils.parseRtpParameters = function(mediaSection) { var description = { codecs: [], headerExtensions: [], fecMechanisms: [], rtcp: [] }; var lines = SDPUtils.splitLines(mediaSection); var mline = lines[0].split(' '); for (var i = 3; i < mline.length; i++) { // find all codecs from mline[3..] var pt = mline[i]; var rtpmapline = SDPUtils.matchPrefix( mediaSection, 'a=rtpmap:' + pt + ' ')[0]; if (rtpmapline) { var codec = SDPUtils.parseRtpMap(rtpmapline); var fmtps = SDPUtils.matchPrefix( mediaSection, 'a=fmtp:' + pt + ' '); // Only the first a=fmtp: 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; } } } SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(function(line) { description.headerExtensions.push(SDPUtils.parseExtmap(line)); }); // FIXME: parse rtcp. return description; }; // Generates parts of the SDP media section describing the capabilities / // parameters. SDPUtils.writeRtpDescription = function(kind, caps) { var sdp = ''; // Build the mline. sdp += 'm=' + kind + ' '; sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs. sdp += ' UDP/TLS/RTP/SAVPF '; sdp += caps.codecs.map(function(codec) { if (codec.preferredPayloadType !== undefined) { return codec.preferredPayloadType; } return codec.payloadType; }).join(' ') + '\r\n'; sdp += 'c=IN IP4 0.0.0.0\r\n'; sdp += 'a=rtcp:9 IN IP4 0.0.0.0\r\n'; // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb. caps.codecs.forEach(function(codec) { sdp += SDPUtils.writeRtpMap(codec); sdp += SDPUtils.writeFmtp(codec); sdp += SDPUtils.writeRtcpFb(codec); }); var maxptime = 0; caps.codecs.forEach(function(codec) { if (codec.maxptime > maxptime) { maxptime = codec.maxptime; } }); if (maxptime > 0) { sdp += 'a=maxptime:' + maxptime + '\r\n'; } sdp += 'a=rtcp-mux\r\n'; if (caps.headerExtensions) { caps.headerExtensions.forEach(function(extension) { sdp += SDPUtils.writeExtmap(extension); }); } // FIXME: write fecMechanisms. return sdp; }; // Parses the SDP media section and returns an array of // RTCRtpEncodingParameters. SDPUtils.parseRtpEncodingParameters = function(mediaSection) { var encodingParameters = []; var description = SDPUtils.parseRtpParameters(mediaSection); var hasRed = description.fecMechanisms.indexOf('RED') !== -1; var hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1; // filter a=ssrc:... cname:, ignore PlanB-msid var ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') .map(function(line) { return SDPUtils.parseSsrcMedia(line); }) .filter(function(parts) { return parts.attribute === 'cname'; }); var primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc; var secondarySsrc; var flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID') .map(function(line) { var parts = line.substr(17).split(' '); return parts.map(function(part) { return parseInt(part, 10); }); }); if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) { secondarySsrc = flows[0][1]; } description.codecs.forEach(function(codec) { if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) { var encParam = { ssrc: primarySsrc, codecPayloadType: parseInt(codec.parameters.apt, 10) }; if (primarySsrc && secondarySsrc) { encParam.rtx = {ssrc: secondarySsrc}; } encodingParameters.push(encParam); if (hasRed) { encParam = JSON.parse(JSON.stringify(encParam)); encParam.fec = { ssrc: primarySsrc, mechanism: hasUlpfec ? 'red+ulpfec' : 'red' }; encodingParameters.push(encParam); } } }); if (encodingParameters.length === 0 && primarySsrc) { encodingParameters.push({ ssrc: primarySsrc }); } // we support both b=AS and b=TIAS but interpret AS as TIAS. var bandwidth = SDPUtils.matchPrefix(mediaSection, 'b='); if (bandwidth.length) { if (bandwidth[0].indexOf('b=TIAS:') === 0) { bandwidth = parseInt(bandwidth[0].substr(7), 10); } else if (bandwidth[0].indexOf('b=AS:') === 0) { // use formula from JSEP to convert b=AS to TIAS value. bandwidth = parseInt(bandwidth[0].substr(5), 10) * 1000 * 0.95 - (50 * 40 * 8); } else { bandwidth = undefined; } encodingParameters.forEach(function(params) { params.maxBitrate = bandwidth; }); } return encodingParameters; }; // parses http://draft.ortc.org/#rtcrtcpparameters* SDPUtils.parseRtcpParameters = function(mediaSection) { var rtcpParameters = {}; // Gets the first SSRC. Note tha with RTX there might be multiple // SSRCs. var remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') .map(function(line) { return SDPUtils.parseSsrcMedia(line); }) .filter(function(obj) { return obj.attribute === 'cname'; })[0]; if (remoteSsrc) { rtcpParameters.cname = remoteSsrc.value; rtcpParameters.ssrc = remoteSsrc.ssrc; } // Edge uses the compound attribute instead of reducedSize // compound is !reducedSize var rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize'); rtcpParameters.reducedSize = rsize.length > 0; rtcpParameters.compound = rsize.length === 0; // parses the rtcp-mux attrіbute. // Note that Edge does not support unmuxed RTCP. var mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux'); rtcpParameters.mux = mux.length > 0; return rtcpParameters; }; // parses either a=msid: or a=ssrc:... msid lines and returns // the id of the MediaStream and MediaStreamTrack. SDPUtils.parseMsid = function(mediaSection) { var parts; var spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:'); if (spec.length === 1) { parts = spec[0].substr(7).split(' '); return {stream: parts[0], track: parts[1]}; } var planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:') .map(function(line) { return SDPUtils.parseSsrcMedia(line); }) .filter(function(msidParts) { return msidParts.attribute === 'msid'; }); if (planB.length > 0) { parts = planB[0].value.split(' '); return {stream: parts[0], track: parts[1]}; } }; // SCTP // parses draft-ietf-mmusic-sctp-sdp-26 first and falls back // to draft-ietf-mmusic-sctp-sdp-05 SDPUtils.parseSctpDescription = function(mediaSection) { var mline = SDPUtils.parseMLine(mediaSection); var maxSizeLine = SDPUtils.matchPrefix(mediaSection, 'a=max-message-size:'); var maxMessageSize; if (maxSizeLine.length > 0) { maxMessageSize = parseInt(maxSizeLine[0].substr(19), 10); } if (isNaN(maxMessageSize)) { maxMessageSize = 65536; } var sctpPort = SDPUtils.matchPrefix(mediaSection, 'a=sctp-port:'); if (sctpPort.length > 0) { return { port: parseInt(sctpPort[0].substr(12), 10), protocol: mline.fmt, maxMessageSize: maxMessageSize }; } var sctpMapLines = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:'); if (sctpMapLines.length > 0) { var parts = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:')[0] .substr(10) .split(' '); return { port: parseInt(parts[0], 10), protocol: parts[1], maxMessageSize: maxMessageSize }; } }; // SCTP // outputs the draft-ietf-mmusic-sctp-sdp-26 version that all browsers // support by now receiving in this format, unless we originally parsed // as the draft-ietf-mmusic-sctp-sdp-05 format (indicated by the m-line // protocol of DTLS/SCTP -- without UDP/ or TCP/) SDPUtils.writeSctpDescription = function(media, sctp) { var output = []; if (media.protocol !== 'DTLS/SCTP') { output = [ 'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.protocol + '\r\n', 'c=IN IP4 0.0.0.0\r\n', 'a=sctp-port:' + sctp.port + '\r\n' ]; } else { output = [ 'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.port + '\r\n', 'c=IN IP4 0.0.0.0\r\n', 'a=sctpmap:' + sctp.port + ' ' + sctp.protocol + ' 65535\r\n' ]; } if (sctp.maxMessageSize !== undefined) { output.push('a=max-message-size:' + sctp.maxMessageSize + '\r\n'); } return output.join(''); }; // Generate a session ID for SDP. // https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1 // recommends using a cryptographically random +ve 64-bit value // but right now this should be acceptable and within the right range SDPUtils.generateSessionId = function() { return Math.random().toString().substr(2, 21); }; // Write boilder plate for start of SDP // sessId argument is optional - if not supplied it will // be generated randomly // sessVersion is optional and defaults to 2 // sessUser is optional and defaults to 'thisisadapterortc' SDPUtils.writeSessionBoilerplate = function(sessId, sessVer, sessUser) { var sessionId; var version = sessVer !== undefined ? sessVer : 2; if (sessId) { sessionId = sessId; } else { sessionId = SDPUtils.generateSessionId(); } var user = sessUser || 'thisisadapterortc'; // FIXME: sess-id should be an NTP timestamp. return 'v=0\r\n' + 'o=' + user + ' ' + sessionId + ' ' + version + ' IN IP4 127.0.0.1\r\n' + 's=-\r\n' + 't=0 0\r\n'; }; SDPUtils.writeMediaSection = function(transceiver, caps, type, stream) { var sdp = SDPUtils.writeRtpDescription(transceiver.kind, caps); // Map ICE parameters (ufrag, pwd) to SDP. sdp += SDPUtils.writeIceParameters( transceiver.iceGatherer.getLocalParameters()); // Map DTLS parameters to SDP. sdp += SDPUtils.writeDtlsParameters( transceiver.dtlsTransport.getLocalParameters(), type === 'offer' ? 'actpass' : 'active'); sdp += 'a=mid:' + transceiver.mid + '\r\n'; if (transceiver.direction) { sdp += 'a=' + transceiver.direction + '\r\n'; } else if (transceiver.rtpSender && transceiver.rtpReceiver) { sdp += 'a=sendrecv\r\n'; } else if (transceiver.rtpSender) { sdp += 'a=sendonly\r\n'; } else if (transceiver.rtpReceiver) { sdp += 'a=recvonly\r\n'; } else { sdp += 'a=inactive\r\n'; } if (transceiver.rtpSender) { // spec. var msid = 'msid:' + stream.id + ' ' + transceiver.rtpSender.track.id + '\r\n'; sdp += 'a=' + msid; // for Chrome. sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + ' ' + msid; if (transceiver.sendEncodingParameters[0].rtx) { sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + ' ' + msid; sdp += 'a=ssrc-group:FID ' + transceiver.sendEncodingParameters[0].ssrc + ' ' + transceiver.sendEncodingParameters[0].rtx.ssrc + '\r\n'; } } // FIXME: this should be written by writeRtpDescription. sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + ' cname:' + SDPUtils.localCName + '\r\n'; if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) { sdp += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + ' cname:' + SDPUtils.localCName + '\r\n'; } return sdp; }; // Gets the direction from the mediaSection or the sessionpart. SDPUtils.getDirection = function(mediaSection, sessionpart) { // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv. var lines = SDPUtils.splitLines(mediaSection); for (var i = 0; i < lines.length; i++) { switch (lines[i]) { case 'a=sendrecv': case 'a=sendonly': case 'a=recvonly': case 'a=inactive': return lines[i].substr(2); // 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. { module.exports = SDPUtils; } }); /* * 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. */ function fixStatsType(stat) { return { inboundrtp: 'inbound-rtp', outboundrtp: 'outbound-rtp', candidatepair: 'candidate-pair', localcandidate: 'local-candidate', remotecandidate: 'remote-candidate' }[stat.type] || stat.type; } function writeMediaSection(transceiver, caps, type, stream, dtlsRole) { var sdp$1 = sdp.writeRtpDescription(transceiver.kind, caps); // Map ICE parameters (ufrag, pwd) to SDP. sdp$1 += sdp.writeIceParameters( transceiver.iceGatherer.getLocalParameters()); // Map DTLS parameters to SDP. sdp$1 += sdp.writeDtlsParameters( transceiver.dtlsTransport.getLocalParameters(), type === 'offer' ? 'actpass' : dtlsRole || 'active'); sdp$1 += 'a=mid:' + transceiver.mid + '\r\n'; if (transceiver.rtpSender && transceiver.rtpReceiver) { sdp$1 += 'a=sendrecv\r\n'; } else if (transceiver.rtpSender) { sdp$1 += 'a=sendonly\r\n'; } else if (transceiver.rtpReceiver) { sdp$1 += 'a=recvonly\r\n'; } else { sdp$1 += 'a=inactive\r\n'; } if (transceiver.rtpSender) { var trackId = transceiver.rtpSender._initialTrackId || transceiver.rtpSender.track.id; transceiver.rtpSender._initialTrackId = trackId; // spec. var msid = 'msid:' + (stream ? stream.id : '-') + ' ' + trackId + '\r\n'; sdp$1 += 'a=' + msid; // for Chrome. Legacy should no longer be required. sdp$1 += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + ' ' + msid; // RTX if (transceiver.sendEncodingParameters[0].rtx) { sdp$1 += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + ' ' + msid; sdp$1 += 'a=ssrc-group:FID ' + transceiver.sendEncodingParameters[0].ssrc + ' ' + transceiver.sendEncodingParameters[0].rtx.ssrc + '\r\n'; } } // FIXME: this should be written by writeRtpDescription. sdp$1 += 'a=ssrc:' + transceiver.sendEncodingParameters[0].ssrc + ' cname:' + sdp.localCName + '\r\n'; if (transceiver.rtpSender && transceiver.sendEncodingParameters[0].rtx) { sdp$1 += 'a=ssrc:' + transceiver.sendEncodingParameters[0].rtx.ssrc + ' cname:' + sdp.localCName + '\r\n'; } return sdp$1; } // Edge does not like // 1) stun: filtered after 14393 unless ?transport=udp is present // 2) turn: that does not have all of turn:host:port?transport=udp // 3) turn: with ipv6 addresses // 4) turn: occurring muliple times function filterIceServers(iceServers, edgeVersion) { var hasTurn = false; iceServers = JSON.parse(JSON.stringify(iceServers)); return iceServers.filter(function(server) { if (server && (server.urls || server.url)) { var urls = server.urls || server.url; if (server.url && !server.urls) { console.warn('RTCIceServer.url is deprecated! Use urls instead.'); } var isString = typeof urls === 'string'; if (isString) { urls = [urls]; } urls = urls.filter(function(url) { var validTurn = url.indexOf('turn:') === 0 && url.indexOf('transport=udp') !== -1 && url.indexOf('turn:[') === -1 && !hasTurn; if (validTurn) { hasTurn = true; return true; } return url.indexOf('stun:') === 0 && edgeVersion >= 14393 && url.indexOf('?transport=udp') === -1; }); delete server.url; server.urls = isString ? urls[0] : urls; return !!urls.length; } }); } // Determines the intersection of local and remote capabilities. function getCommonCapabilities(localCapabilities, remoteCapabilities) { var commonCapabilities = { codecs: [], headerExtensions: [], fecMechanisms: [] }; var findCodecByPayloadType = function(pt, codecs) { pt = parseInt(pt, 10); for (var i = 0; i < codecs.length; i++) { if (codecs[i].payloadType === pt || codecs[i].preferredPayloadType === pt) { return codecs[i]; } } }; var rtxCapabilityMatches = function(lRtx, rRtx, lCodecs, rCodecs) { var lCodec = findCodecByPayloadType(lRtx.parameters.apt, lCodecs); var rCodec = findCodecByPayloadType(rRtx.parameters.apt, rCodecs); return lCodec && rCodec && lCodec.name.toLowerCase() === rCodec.name.toLowerCase(); }; localCapabilities.codecs.forEach(function(lCodec) { for (var i = 0; i < remoteCapabilities.codecs.length; i++) { var rCodec = remoteCapabilities.codecs[i]; if (lCodec.name.toLowerCase() === rCodec.name.toLowerCase() && lCodec.clockRate === rCodec.clockRate) { if (lCodec.name.toLowerCase() === 'rtx' && lCodec.parameters && rCodec.parameters.apt) { // for RTX we need to find the local rtx that has a apt // which points to the same local codec as the remote one. if (!rtxCapabilityMatches(lCodec, rCodec, localCapabilities.codecs, remoteCapabilities.codecs)) { continue; } } rCodec = JSON.parse(JSON.stringify(rCodec)); // deepcopy // number of channels is the highest common number of channels rCodec.numChannels = Math.min(lCodec.numChannels, rCodec.numChannels); // push rCodec so we reply with offerer payload type commonCapabilities.codecs.push(rCodec); // determine common feedback mechanisms rCodec.rtcpFeedback = rCodec.rtcpFeedback.filter(function(fb) { for (var j = 0; j < lCodec.rtcpFeedback.length; j++) { if (lCodec.rtcpFeedback[j].type === fb.type && lCodec.rtcpFeedback[j].parameter === fb.parameter) { return true; } } return false; }); // FIXME: also need to determine .parameters // see https://github.com/openpeer/ortc/issues/569 break; } } }); localCapabilities.headerExtensions.forEach(function(lHeaderExtension) { for (var i = 0; i < remoteCapabilities.headerExtensions.length; i++) { var rHeaderExtension = remoteCapabilities.headerExtensions[i]; if (lHeaderExtension.uri === rHeaderExtension.uri) { commonCapabilities.headerExtensions.push(rHeaderExtension); break; } } }); // FIXME: fecMechanisms return commonCapabilities; } // is action=setLocalDescription with type allowed in signalingState function isActionAllowedInSignalingState(action, type, signalingState) { return { offer: { setLocalDescription: ['stable', 'have-local-offer'], setRemoteDescription: ['stable', 'have-remote-offer'] }, answer: { setLocalDescription: ['have-remote-offer', 'have-local-pranswer'], setRemoteDescription: ['have-local-offer', 'have-remote-pranswer'] } }[type][action].indexOf(signalingState) !== -1; } function maybeAddCandidate(iceTransport, candidate) { // Edge's internal representation adds some fields therefore // not all fieldѕ are taken into account. var alreadyAdded = iceTransport.getRemoteCandidates() .find(function(remoteCandidate) { return candidate.foundation === remoteCandidate.foundation && candidate.ip === remoteCandidate.ip && candidate.port === remoteCandidate.port && candidate.priority === remoteCandidate.priority && candidate.protocol === remoteCandidate.protocol && candidate.type === remoteCandidate.type; }); if (!alreadyAdded) { iceTransport.addRemoteCandidate(candidate); } return !alreadyAdded; } function makeError(name, description) { var e = new Error(description); e.name = name; // legacy error codes from https://heycam.github.io/webidl/#idl-DOMException-error-names e.code = { NotSupportedError: 9, InvalidStateError: 11, InvalidAccessError: 15, TypeError: undefined, OperationError: undefined }[name]; return e; } var rtcpeerconnection = function(window, edgeVersion) { // https://w3c.github.io/mediacapture-main/#mediastream // Helper function to add the track to the stream and // dispatch the event ourselves. function addTrackToStreamAndFireEvent(track, stream) { stream.addTrack(track); stream.dispatchEvent(new window.MediaStreamTrackEvent('addtrack', {track: track})); } function removeTrackFromStreamAndFireEvent(track, stream) { stream.removeTrack(track); stream.dispatchEvent(new window.MediaStreamTrackEvent('removetrack', {track: track})); } function fireAddTrack(pc, track, receiver, streams) { var trackEvent = new Event('track'); trackEvent.track = track; trackEvent.receiver = receiver; trackEvent.transceiver = {receiver: receiver}; trackEvent.streams = streams; window.setTimeout(function() { pc._dispatchEvent('track', trackEvent); }); } var RTCPeerConnection = function(config) { var pc = this; var _eventTarget = document.createDocumentFragment(); ['addEventListener', 'removeEventListener', 'dispatchEvent'] .forEach(function(method) { pc[method] = _eventTarget[method].bind(_eventTarget); }); this.canTrickleIceCandidates = null; this.needNegotiation = false; this.localStreams = []; this.remoteStreams = []; this._localDescription = null; this._remoteDescription = null; this.signalingState = 'stable'; this.iceConnectionState = 'new'; this.connectionState = 'new'; this.iceGatheringState = 'new'; config = JSON.parse(JSON.stringify(config || {})); this.usingBundle = config.bundlePolicy === 'max-bundle'; if (config.rtcpMuxPolicy === 'negotiate') { throw(makeError('NotSupportedError', 'rtcpMuxPolicy \'negotiate\' is not supported')); } else if (!config.rtcpMuxPolicy) { config.rtcpMuxPolicy = 'require'; } switch (config.iceTransportPolicy) { case 'all': case 'relay': break; default: config.iceTransportPolicy = 'all'; break; } switch (config.bundlePolicy) { case 'balanced': case 'max-compat': case 'max-bundle': break; default: config.bundlePolicy = 'balanced'; break; } config.iceServers = filterIceServers(config.iceServers || [], edgeVersion); this._iceGatherers = []; if (config.iceCandidatePoolSize) { for (var i = config.iceCandidatePoolSize; i > 0; i--) { this._iceGatherers.push(new window.RTCIceGatherer({ iceServers: config.iceServers, gatherPolicy: config.iceTransportPolicy })); } } else { config.iceCandidatePoolSize = 0; } this._config = config; // per-track iceGathers, iceTransports, dtlsTransports, rtpSenders, ... // everything that is needed to describe a SDP m-line. this.transceivers = []; this._sdpSessionId = sdp.generateSessionId(); this._sdpSessionVersion = 0; this._dtlsRole = undefined; // role for a=setup to use in answers. this._isClosed = false; }; Object.defineProperty(RTCPeerConnection.prototype, 'localDescription', { configurable: true, get: function() { return this._localDescription; } }); Object.defineProperty(RTCPeerConnection.prototype, 'remoteDescription', { configurable: true, get: function() { return this._remoteDescription; } }); // set up event handlers on prototype RTCPeerConnection.prototype.onicecandidate = null; RTCPeerConnection.prototype.onaddstream = null; RTCPeerConnection.prototype.ontrack = null; RTCPeerConnection.prototype.onremovestream = null; RTCPeerConnection.prototype.onsignalingstatechange = null; RTCPeerConnection.prototype.oniceconnectionstatechange = null; RTCPeerConnection.prototype.onconnectionstatechange = null; RTCPeerConnection.prototype.onicegatheringstatechange = null; RTCPeerConnection.prototype.onnegotiationneeded = null; RTCPeerConnection.prototype.ondatachannel = null; RTCPeerConnection.prototype._dispatchEvent = function(name, event) { if (this._isClosed) { return; } this.dispatchEvent(event); if (typeof this['on' + name] === 'function') { this['on' + name](event); } }; RTCPeerConnection.prototype._emitGatheringStateChange = function() { var event = new Event('icegatheringstatechange'); this._dispatchEvent('icegatheringstatechange', event); }; RTCPeerConnection.prototype.getConfiguration = function() { return this._config; }; RTCPeerConnection.prototype.getLocalStreams = function() { return this.localStreams; }; RTCPeerConnection.prototype.getRemoteStreams = function() { return this.remoteStreams; }; // internal helper to create a transceiver object. // (which is not yet the same as the WebRTC 1.0 transceiver) RTCPeerConnection.prototype._createTransceiver = function(kind, doNotAdd) { var hasBundleTransport = this.transceivers.length > 0; var transceiver = { track: null, iceGatherer: null, iceTransport: null, dtlsTransport: null, localCapabilities: null, remoteCapabilities: null, rtpSender: null, rtpReceiver: null, kind: kind, mid: null, sendEncodingParameters: null, recvEncodingParameters: null, stream: null, associatedRemoteMediaStreams: [], wantReceive: true }; if (this.usingBundle && hasBundleTransport) { transceiver.iceTransport = this.transceivers[0].iceTransport; transceiver.dtlsTransport = this.transceivers[0].dtlsTransport; } else { var transports = this._createIceAndDtlsTransports(); transceiver.iceTransport = transports.iceTransport; transceiver.dtlsTransport = transports.dtlsTransport; } if (!doNotAdd) { this.transceivers.push(transceiver); } return transceiver; }; RTCPeerConnection.prototype.addTrack = function(track, stream) { if (this._isClosed) { throw makeError('InvalidStateError', 'Attempted to call addTrack on a closed peerconnection.'); } var alreadyExists = this.transceivers.find(function(s) { return s.track === track; }); if (alreadyExists) { throw makeError('InvalidAccessError', 'Track already exists.'); } var transceiver; for (var i = 0; i < this.transceivers.length; i++) { if (!this.transceivers[i].track && this.transceivers[i].kind === track.kind) { transceiver = this.transceivers[i]; } } if (!transceiver) { transceiver = this._createTransceiver(track.kind); } this._maybeFireNegotiationNeeded(); if (this.localStreams.indexOf(stream) === -1) { this.localStreams.push(stream); } transceiver.track = track; transceiver.stream = stream; transceiver.rtpSender = new window.RTCRtpSender(track, transceiver.dtlsTransport); return transceiver.rtpSender; }; RTCPeerConnection.prototype.addStream = function(stream) { var pc = this; if (edgeVersion >= 15025) { stream.getTracks().forEach(function(track) { pc.addTrack(track, stream); }); } else { // Clone is necessary for local demos mostly, attaching directly // to two different senders does not work (build 10547). // Fixed in 15025 (or earlier) var clonedStream = stream.clone(); stream.getTracks().forEach(function(track, idx) { var clonedTrack = clonedStream.getTracks()[idx]; track.addEventListener('enabled', function(event) { clonedTrack.enabled = event.enabled; }); }); clonedStream.getTracks().forEach(function(track) { pc.addTrack(track, clonedStream); }); } }; RTCPeerConnection.prototype.removeTrack = function(sender) { if (this._isClosed) { throw makeError('InvalidStateError', 'Attempted to call removeTrack on a closed peerconnection.'); } if (!(sender instanceof window.RTCRtpSender)) { throw new TypeError('Argument 1 of RTCPeerConnection.removeTrack ' + 'does not implement interface RTCRtpSender.'); } var transceiver = this.transceivers.find(function(t) { return t.rtpSender === sender; }); if (!transceiver) { throw makeError('InvalidAccessError', 'Sender was not created by this connection.'); } var stream = transceiver.stream; transceiver.rtpSender.stop(); transceiver.rtpSender = null; transceiver.track = null; transceiver.stream = null; // remove the stream from the set of local streams var localStreams = this.transceivers.map(function(t) { return t.stream; }); if (localStreams.indexOf(stream) === -1 && this.localStreams.indexOf(stream) > -1) { this.localStreams.splice(this.localStreams.indexOf(stream), 1); } this._maybeFireNegotiationNeeded(); }; RTCPeerConnection.prototype.removeStream = function(stream) { var pc = this; stream.getTracks().forEach(function(track) { var sender = pc.getSenders().find(function(s) { return s.track === track; }); if (sender) { pc.removeTrack(sender); } }); }; RTCPeerConnection.prototype.getSenders = function() { return this.transceivers.filter(function(transceiver) { return !!transceiver.rtpSender; }) .map(function(transceiver) { return transceiver.rtpSender; }); }; RTCPeerConnection.prototype.getReceivers = function() { return this.transceivers.filter(function(transceiver) { return !!transceiver.rtpReceiver; }) .map(function(transceiver) { return transceiver.rtpReceiver; }); }; RTCPeerConnection.prototype._createIceGatherer = function(sdpMLineIndex, usingBundle) { var pc = this; if (usingBundle && sdpMLineIndex > 0) { return this.transceivers[0].iceGatherer; } else if (this._iceGatherers.length) { return this._iceGatherers.shift(); } var iceGatherer = new window.RTCIceGatherer({ iceServers: this._config.iceServers, gatherPolicy: this._config.iceTransportPolicy }); Object.defineProperty(iceGatherer, 'state', {value: 'new', writable: true} ); this.transceivers[sdpMLineIndex].bufferedCandidateEvents = []; this.transceivers[sdpMLineIndex].bufferCandidates = function(event) { var end = !event.candidate || Object.keys(event.candidate).length === 0; // polyfill since RTCIceGatherer.state is not implemented in // Edge 10547 yet. iceGatherer.state = end ? 'completed' : 'gathering'; if (pc.transceivers[sdpMLineIndex].bufferedCandidateEvents !== null) { pc.transceivers[sdpMLineIndex].bufferedCandidateEvents.push(event); } }; iceGatherer.addEventListener('localcandidate', this.transceivers[sdpMLineIndex].bufferCandidates); return iceGatherer; }; // start gathering from an RTCIceGatherer. RTCPeerConnection.prototype._gather = function(mid, sdpMLineIndex) { var pc = this; var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer; if (iceGatherer.onlocalcandidate) { return; } var bufferedCandidateEvents = this.transceivers[sdpMLineIndex].bufferedCandidateEvents; this.transceivers[sdpMLineIndex].bufferedCandidateEvents = null; iceGatherer.removeEventListener('localcandidate', this.transceivers[sdpMLineIndex].bufferCandidates); iceGatherer.onlocalcandidate = function(evt) { if (pc.usingBundle && sdpMLineIndex > 0) { // if we know that we use bundle we can drop candidates with // ѕdpMLineIndex > 0. If we don't do this then our state gets // confused since we dispose the extra ice gatherer. return; } var event = new Event('icecandidate'); event.candidate = {sdpMid: mid, sdpMLineIndex: sdpMLineIndex}; var cand = evt.candidate; // Edge emits an empty object for RTCIceCandidateComplete‥ var end = !cand || Object.keys(cand).length === 0; if (end) { // polyfill since RTCIceGatherer.state is not implemented in // Edge 10547 yet. if (iceGatherer.state === 'new' || iceGatherer.state === 'gathering') { iceGatherer.state = 'completed'; } } else { if (iceGatherer.state === 'new') { iceGatherer.state = 'gathering'; } // RTCIceCandidate doesn't have a component, needs to be added cand.component = 1; // also the usernameFragment. TODO: update SDP to take both variants. cand.ufrag = iceGatherer.getLocalParameters().usernameFragment; var serializedCandidate = sdp.writeCandidate(cand); event.candidate = Object.assign(event.candidate, sdp.parseCandidate(serializedCandidate)); event.candidate.candidate = serializedCandidate; event.candidate.toJSON = function() { return { candidate: event.candidate.candidate, sdpMid: event.candidate.sdpMid, sdpMLineIndex: event.candidate.sdpMLineIndex, usernameFragment: event.candidate.usernameFragment }; }; } // update local description. var sections = sdp.getMediaSections(pc._localDescription.sdp); if (!end) { sections[event.candidate.sdpMLineIndex] += 'a=' + event.candidate.candidate + '\r\n'; } else { sections[event.candidate.sdpMLineIndex] += 'a=end-of-candidates\r\n'; } pc._localDescription.sdp = sdp.getDescription(pc._localDescription.sdp) + sections.join(''); var complete = pc.transceivers.every(function(transceiver) { return transceiver.iceGatherer && transceiver.iceGatherer.state === 'completed'; }); if (pc.iceGatheringState !== 'gathering') { pc.iceGatheringState = 'gathering'; pc._emitGatheringStateChange(); } // Emit candidate. Also emit null candidate when all gatherers are // complete. if (!end) { pc._dispatchEvent('icecandidate', event); } if (complete) { pc._dispatchEvent('icecandidate', new Event('icecandidate')); pc.iceGatheringState = 'complete'; pc._emitGatheringStateChange(); } }; // emit already gathered candidates. window.setTimeout(function() { bufferedCandidateEvents.forEach(function(e) { iceGatherer.onlocalcandidate(e); }); }, 0); }; // Create ICE transport and DTLS transport. RTCPeerConnection.prototype._createIceAndDtlsTransports = function() { var pc = this; var iceTransport = new window.RTCIceTransport(null); iceTransport.onicestatechange = function() { pc._updateIceConnectionState(); pc._updateConnectionState(); }; var dtlsTransport = new window.RTCDtlsTransport(iceTransport); dtlsTransport.ondtlsstatechange = function() { pc._updateConnectionState(); }; dtlsTransport.onerror = function() { // onerror does not set state to failed by itself. Object.defineProperty(dtlsTransport, 'state', {value: 'failed', writable: true}); pc._updateConnectionState(); }; return { iceTransport: iceTransport, dtlsTransport: dtlsTransport }; }; // Destroy ICE gatherer, ICE transport and DTLS transport. // Without triggering the callbacks. RTCPeerConnection.prototype._disposeIceAndDtlsTransports = function( sdpMLineIndex) { var iceGatherer = this.transceivers[sdpMLineIndex].iceGatherer; if (iceGatherer) { delete iceGatherer.onlocalcandidate; delete this.transceivers[sdpMLineIndex].iceGatherer; } var iceTransport = this.transceivers[sdpMLineIndex].iceTransport; if (iceTransport) { delete iceTransport.onicestatechange; delete this.transceivers[sdpMLineIndex].iceTransport; } var dtlsTransport = this.transceivers[sdpMLineIndex].dtlsTransport; if (dtlsTransport) { delete dtlsTransport.ondtlsstatechange; delete dtlsTransport.onerror; delete this.transceivers[sdpMLineIndex].dtlsTransport; } }; // Start the RTP Sender and Receiver for a transceiver. RTCPeerConnection.prototype._transceive = function(transceiver, send, recv) { var params = getCommonCapabilities(transceiver.localCapabilities, transceiver.remoteCapabilities); if (send && transceiver.rtpSender) { params.encodings = transceiver.sendEncodingParameters; params.rtcp = { cname: sdp.localCName, compound: transceiver.rtcpParameters.compound }; if (transceiver.recvEncodingParameters.length) { params.rtcp.ssrc = transceiver.recvEncodingParameters[0].ssrc; } transceiver.rtpSender.send(params); } if (recv && transceiver.rtpReceiver && params.codecs.length > 0) { // remove RTX field in Edge 14942 if (transceiver.kind === 'video' && transceiver.recvEncodingParameters && edgeVersion < 15019) { transceiver.recvEncodingParameters.forEach(function(p) { delete p.rtx; }); } if (transceiver.recvEncodingParameters.length) { params.encodings = transceiver.recvEncodingParameters; } else { params.encodings = [{}]; } params.rtcp = { compound: transceiver.rtcpParameters.compound }; if (transceiver.rtcpParameters.cname) { params.rtcp.cname = transceiver.rtcpParameters.cname; } if (transceiver.sendEncodingParameters.length) { params.rtcp.ssrc = transceiver.sendEncodingParameters[0].ssrc; } transceiver.rtpReceiver.receive(params); } }; RTCPeerConnection.prototype.setLocalDescription = function(description) { var pc = this; // Note: pranswer is not supported. if (['offer', 'answer'].indexOf(description.type) === -1) { return Promise.reject(makeError('TypeError', 'Unsupported type "' + description.type + '"')); } if (!isActionAllowedInSignalingState('setLocalDescription', description.type, pc.signalingState) || pc._isClosed) { return Promise.reject(makeError('InvalidStateError', 'Can not set local ' + description.type + ' in state ' + pc.signalingState)); } var sections; var sessionpart; if (description.type === 'offer') { // VERY limited support for SDP munging. Limited to: // * changing the order of codecs sections = sdp.splitSections(description.sdp); sessionpart = sections.shift(); sections.forEach(function(mediaSection, sdpMLineIndex) { var caps = sdp.parseRtpParameters(mediaSection); pc.transceivers[sdpMLineIndex].localCapabilities = caps; }); pc.transceivers.forEach(function(transceiver, sdpMLineIndex) { pc._gather(transceiver.mid, sdpMLineIndex); }); } else if (description.type === 'answer') { sections = sdp.splitSections(pc._remoteDescription.sdp); sessionpart = sections.shift(); var isIceLite = sdp.matchPrefix(sessionpart, 'a=ice-lite').length > 0; sections.forEach(function(mediaSection, sdpMLineIndex) { var transceiver = pc.transceivers[sdpMLineIndex]; var iceGatherer = transceiver.iceGatherer; var iceTransport = transceiver.iceTransport; var dtlsTransport = transceiver.dtlsTransport; var localCapabilities = transceiver.localCapabilities; var remoteCapabilities = transceiver.remoteCapabilities; // treat bundle-only as not-rejected. var rejected = sdp.isRejected(mediaSection) && sdp.matchPrefix(mediaSection, 'a=bundle-only').length === 0; if (!rejected && !transceiver.rejected) { var remoteIceParameters = sdp.getIceParameters( mediaSection, sessionpart); var remoteDtlsParameters = sdp.getDtlsParameters( mediaSection, sessionpart); if (isIceLite) { remoteDtlsParameters.role = 'server'; } if (!pc.usingBundle || sdpMLineIndex === 0) { pc._gather(transceiver.mid, sdpMLineIndex); if (iceTransport.state === 'new') { iceTransport.start(iceGatherer, remoteIceParameters, isIceLite ? 'controlling' : 'controlled'); } if (dtlsTransport.state === 'new') { dtlsTransport.start(remoteDtlsParameters); } } // Calculate intersection of capabilities. var params = getCommonCapabilities(localCapabilities, remoteCapabilities); // Start the RTCRtpSender. The RTCRtpReceiver for this // transceiver has already been started in setRemoteDescription. pc._transceive(transceiver, params.codecs.length > 0, false); } }); } pc._localDescription = { type: description.type, sdp: description.sdp }; if (description.type === 'offer') { pc._updateSignalingState('have-local-offer'); } else { pc._updateSignalingState('stable'); } return Promise.resolve(); }; RTCPeerConnection.prototype.setRemoteDescription = function(description) { var pc = this; // Note: pranswer is not supported. if (['offer', 'answer'].indexOf(description.type) === -1) { return Promise.reject(makeError('TypeError', 'Unsupported type "' + description.type + '"')); } if (!isActionAllowedInSignalingState('setRemoteDescription', description.type, pc.signalingState) || pc._isClosed) { return Promise.reject(makeError('InvalidStateError', 'Can not set remote ' + description.type + ' in state ' + pc.signalingState)); } var streams = {}; pc.remoteStreams.forEach(function(stream) { streams[stream.id] = stream; }); var receiverList = []; var sections = sdp.splitSections(description.sdp); var sessionpart = sections.shift(); var isIceLite = sdp.matchPrefix(sessionpart, 'a=ice-lite').length > 0; var usingBundle = sdp.matchPrefix(sessionpart, 'a=group:BUNDLE ').length > 0; pc.usingBundle = usingBundle; var iceOptions = sdp.matchPrefix(sessionpart, 'a=ice-options:')[0]; if (iceOptions) { pc.canTrickleIceCandidates = iceOptions.substr(14).split(' ') .indexOf('trickle') >= 0; } else { pc.canTrickleIceCandidates = false; } sections.forEach(function(mediaSection, sdpMLineIndex) { var lines = sdp.splitLines(mediaSection); var kind = sdp.getKind(mediaSection); // treat bundle-only as not-rejected. var rejected = sdp.isRejected(mediaSection) && sdp.matchPrefix(mediaSection, 'a=bundle-only').length === 0; var protocol = lines[0].substr(2).split(' ')[2]; var direction = sdp.getDirection(mediaSection, sessionpart); var remoteMsid = sdp.parseMsid(mediaSection); var mid = sdp.getMid(mediaSection) || sdp.generateIdentifier(); // Reject datachannels which are not implemented yet. if (rejected || (kind === 'application' && (protocol === 'DTLS/SCTP' || protocol === 'UDP/DTLS/SCTP'))) { // TODO: this is dangerous in the case where a non-rejected m-line // becomes rejected. pc.transceivers[sdpMLineIndex] = { mid: mid, kind: kind, protocol: protocol, rejected: true }; return; } if (!rejected && pc.transceivers[sdpMLineIndex] && pc.transceivers[sdpMLineIndex].rejected) { // recycle a rejected transceiver. pc.transceivers[sdpMLineIndex] = pc._createTransceiver(kind, true); } var transceiver; var iceGatherer; var iceTransport; var dtlsTransport; var rtpReceiver; var sendEncodingParameters; var recvEncodingParameters; var localCapabilities; var track; // FIXME: ensure the mediaSection has rtcp-mux set. var remoteCapabilities = sdp.parseRtpParameters(mediaSection); var remoteIceParameters; var remoteDtlsParameters; if (!rejected) { remoteIceParameters = sdp.getIceParameters(mediaSection, sessionpart); remoteDtlsParameters = sdp.getDtlsParameters(mediaSection, sessionpart); remoteDtlsParameters.role = 'client'; } recvEncodingParameters = sdp.parseRtpEncodingParameters(mediaSection); var rtcpParameters = sdp.parseRtcpParameters(mediaSection); var isComplete = sdp.matchPrefix(mediaSection, 'a=end-of-candidates', sessionpart).length > 0; var cands = sdp.matchPrefix(mediaSection, 'a=candidate:') .map(function(cand) { return sdp.parseCandidate(cand); }) .filter(function(cand) { return cand.component === 1; }); // Check if we can use BUNDLE and dispose transports. if ((description.type === 'offer' || description.type === 'answer') && !rejected && usingBundle && sdpMLineIndex > 0 && pc.transceivers[sdpMLineIndex]) { pc._disposeIceAndDtlsTransports(sdpMLineIndex); pc.transceivers[sdpMLineIndex].iceGatherer = pc.transceivers[0].iceGatherer; pc.transceivers[sdpMLineIndex].iceTransport = pc.transceivers[0].iceTransport; pc.transceivers[sdpMLineIndex].dtlsTransport = pc.transceivers[0].dtlsTransport; if (pc.transceivers[sdpMLineIndex].rtpSender) { pc.transceivers[sdpMLineIndex].rtpSender.setTransport( pc.transceivers[0].dtlsTransport); } if (pc.transceivers[sdpMLineIndex].rtpReceiver) { pc.transceivers[sdpMLineIndex].rtpReceiver.setTransport( pc.transceivers[0].dtlsTransport); } } if (description.type === 'offer' && !rejected) { transceiver = pc.transceivers[sdpMLineIndex] || pc._createTransceiver(kind); transceiver.mid = mid; if (!transceiver.iceGatherer) { transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex, usingBundle); } if (cands.length && transceiver.iceTransport.state === 'new') { if (isComplete && (!usingBundle || sdpMLineIndex === 0)) { transceiver.iceTransport.setRemoteCandidates(cands); } else { cands.forEach(function(candidate) { maybeAddCandidate(transceiver.iceTransport, candidate); }); } } localCapabilities = window.RTCRtpReceiver.getCapabilities(kind); // filter RTX until additional stuff needed for RTX is implemented // in adapter.js if (edgeVersion < 15019) { localCapabilities.codecs = localCapabilities.codecs.filter( function(codec) { return codec.name !== 'rtx'; }); } sendEncodingParameters = transceiver.sendEncodingParameters || [{ ssrc: (2 * sdpMLineIndex + 2) * 1001 }]; // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams var isNewTrack = false; if (direction === 'sendrecv' || direction === 'sendonly') { isNewTrack = !transceiver.rtpReceiver; rtpReceiver = transceiver.rtpReceiver || new window.RTCRtpReceiver(transceiver.dtlsTransport, kind); if (isNewTrack) { var stream; track = rtpReceiver.track; // FIXME: does not work with Plan B. if (remoteMsid && remoteMsid.stream === '-') ; else if (remoteMsid) { if (!streams[remoteMsid.stream]) { streams[remoteMsid.stream] = new window.MediaStream(); Object.defineProperty(streams[remoteMsid.stream], 'id', { get: function() { return remoteMsid.stream; } }); } Object.defineProperty(track, 'id', { get: function() { return remoteMsid.track; } }); stream = streams[remoteMsid.stream]; } else { if (!streams.default) { streams.default = new window.MediaStream(); } stream = streams.default; } if (stream) { addTrackToStreamAndFireEvent(track, stream); transceiver.associatedRemoteMediaStreams.push(stream); } receiverList.push([track, rtpReceiver, stream]); } } else if (transceiver.rtpReceiver && transceiver.rtpReceiver.track) { transceiver.associatedRemoteMediaStreams.forEach(function(s) { var nativeTrack = s.getTracks().find(function(t) { return t.id === transceiver.rtpReceiver.track.id; }); if (nativeTrack) { removeTrackFromStreamAndFireEvent(nativeTrack, s); } }); transceiver.associatedRemoteMediaStreams = []; } transceiver.localCapabilities = localCapabilities; transceiver.remoteCapabilities = remoteCapabilities; transceiver.rtpReceiver = rtpReceiver; transceiver.rtcpParameters = rtcpParameters; transceiver.sendEncodingParameters = sendEncodingParameters; transceiver.recvEncodingParameters = recvEncodingParameters; // Start the RTCRtpReceiver now. The RTPSender is started in // setLocalDescription. pc._transceive(pc.transceivers[sdpMLineIndex], false, isNewTrack); } else if (description.type === 'answer' && !rejected) { transceiver = pc.transceivers[sdpMLineIndex]; iceGatherer = transceiver.iceGatherer; iceTransport = transceiver.iceTransport; dtlsTransport = transceiver.dtlsTransport; rtpReceiver = transceiver.rtpReceiver; sendEncodingParameters = transceiver.sendEncodingParameters; localCapabilities = transceiver.localCapabilities; pc.transceivers[sdpMLineIndex].recvEncodingParameters = recvEncodingParameters; pc.transceivers[sdpMLineIndex].remoteCapabilities = remoteCapabilities; pc.transceivers[sdpMLineIndex].rtcpParameters = rtcpParameters; if (cands.length && iceTransport.state === 'new') { if ((isIceLite || isComplete) && (!usingBundle || sdpMLineIndex === 0)) { iceTransport.setRemoteCandidates(cands); } else { cands.forEach(function(candidate) { maybeAddCandidate(transceiver.iceTransport, candidate); }); } } if (!usingBundle || sdpMLineIndex === 0) { if (iceTransport.state === 'new') { iceTransport.start(iceGatherer, remoteIceParameters, 'controlling'); } if (dtlsTransport.state === 'new') { dtlsTransport.start(remoteDtlsParameters); } } // If the offer contained RTX but the answer did not, // remove RTX from sendEncodingParameters. var commonCapabilities = getCommonCapabilities( transceiver.localCapabilities, transceiver.remoteCapabilities); var hasRtx = commonCapabilities.codecs.filter(function(c) { return c.name.toLowerCase() === 'rtx'; }).length; if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) { delete transceiver.sendEncodingParameters[0].rtx; } pc._transceive(transceiver, direction === 'sendrecv' || direction === 'recvonly', direction === 'sendrecv' || direction === 'sendonly'); // TODO: rewrite to use http://w3c.github.io/webrtc-pc/#set-associated-remote-streams if (rtpReceiver && (direction === 'sendrecv' || direction === 'sendonly')) { track = rtpReceiver.track; if (remoteMsid) { if (!streams[remoteMsid.stream]) { streams[remoteMsid.stream] = new window.MediaStream(); } addTrackToStreamAndFireEvent(track, streams[remoteMsid.stream]); receiverList.push([track, rtpReceiver, streams[remoteMsid.stream]]); } else { if (!streams.default) { streams.default = new window.MediaStream(); } addTrackToStreamAndFireEvent(track, streams.default); receiverList.push([track, rtpReceiver, streams.default]); } } else { // FIXME: actually the receiver should be created later. delete transceiver.rtpReceiver; } } }); if (pc._dtlsRole === undefined) { pc._dtlsRole = description.type === 'offer' ? 'active' : 'passive'; } pc._remoteDescription = { type: description.type, sdp: description.sdp }; if (description.type === 'offer') { pc._updateSignalingState('have-remote-offer'); } else { pc._updateSignalingState('stable'); } Object.keys(streams).forEach(function(sid) { var stream = streams[sid]; if (stream.getTracks().length) { if (pc.remoteStreams.indexOf(stream) === -1) { pc.remoteStreams.push(stream); var event = new Event('addstream'); event.stream = stream; window.setTimeout(function() { pc._dispatchEvent('addstream', event); }); } receiverList.forEach(function(item) { var track = item[0]; var receiver = item[1]; if (stream.id !== item[2].id) { return; } fireAddTrack(pc, track, receiver, [stream]); }); } }); receiverList.forEach(function(item) { if (item[2]) { return; } fireAddTrack(pc, item[0], item[1], []); }); // check whether addIceCandidate({}) was called within four seconds after // setRemoteDescription. window.setTimeout(function() { if (!(pc && pc.transceivers)) { return; } pc.transceivers.forEach(function(transceiver) { if (transceiver.iceTransport && transceiver.iceTransport.state === 'new' && transceiver.iceTransport.getRemoteCandidates().length > 0) { console.warn('Timeout for addRemoteCandidate. Consider sending ' + 'an end-of-candidates notification'); transceiver.iceTransport.addRemoteCandidate({}); } }); }, 4000); return Promise.resolve(); }; RTCPeerConnection.prototype.close = function() { this.transceivers.forEach(function(transceiver) { /* not yet if (transceiver.iceGatherer) { transceiver.iceGatherer.close(); } */ if (transceiver.iceTransport) { transceiver.iceTransport.stop(); } if (transceiver.dtlsTransport) { transceiver.dtlsTransport.stop(); } if (transceiver.rtpSender) { transceiver.rtpSender.stop(); } if (transceiver.rtpReceiver) { transceiver.rtpReceiver.stop(); } }); // FIXME: clean up tracks, local streams, remote streams, etc this._isClosed = true; this._updateSignalingState('closed'); }; // Update the signaling state. RTCPeerConnection.prototype._updateSignalingState = function(newState) { this.signalingState = newState; var event = new Event('signalingstatechange'); this._dispatchEvent('signalingstatechange', event); }; // Determine whether to fire the negotiationneeded event. RTCPeerConnection.prototype._maybeFireNegotiationNeeded = function() { var pc = this; if (this.signalingState !== 'stable' || this.needNegotiation === true) { return; } this.needNegotiation = true; window.setTimeout(function() { if (pc.needNegotiation) { pc.needNegotiation = false; var event = new Event('negotiationneeded'); pc._dispatchEvent('negotiationneeded', event); } }, 0); }; // Update the ice connection state. RTCPeerConnection.prototype._updateIceConnectionState = function() { var newState; var states = { 'new': 0, closed: 0, checking: 0, connected: 0, completed: 0, disconnected: 0, failed: 0 }; this.transceivers.forEach(function(transceiver) { if (transceiver.iceTransport && !transceiver.rejected) { states[transceiver.iceTransport.state]++; } }); newState = 'new'; if (states.failed > 0) { newState = 'failed'; } else if (states.checking > 0) { newState = 'checking'; } else if (states.disconnected > 0) { newState = 'disconnected'; } else if (states.new > 0) { newState = 'new'; } else if (states.connected > 0) { newState = 'connected'; } else if (states.completed > 0) { newState = 'completed'; } if (newState !== this.iceConnectionState) { this.iceConnectionState = newState; var event = new Event('iceconnectionstatechange'); this._dispatchEvent('iceconnectionstatechange', event); } }; // Update the connection state. RTCPeerConnection.prototype._updateConnectionState = function() { var newState; var states = { 'new': 0, closed: 0, connecting: 0, connected: 0, completed: 0, disconnected: 0, failed: 0 }; this.transceivers.forEach(function(transceiver) { if (transceiver.iceTransport && transceiver.dtlsTransport && !transceiver.rejected) { states[transceiver.iceTransport.state]++; states[transceiver.dtlsTransport.state]++; } }); // ICETransport.completed and connected are the same for this purpose. states.connected += states.completed; newState = 'new'; if (states.failed > 0) { newState = 'failed'; } else if (states.connecting > 0) { newState = 'connecting'; } else if (states.disconnected > 0) { newState = 'disconnected'; } else if (states.new > 0) { newState = 'new'; } else if (states.connected > 0) { newState = 'connected'; } if (newState !== this.connectionState) { this.connectionState = newState; var event = new Event('connectionstatechange'); this._dispatchEvent('connectionstatechange', event); } }; RTCPeerConnection.prototype.createOffer = function() { var pc = this; if (pc._isClosed) { return Promise.reject(makeError('InvalidStateError', 'Can not call createOffer after close')); } var numAudioTracks = pc.transceivers.filter(function(t) { return t.kind === 'audio'; }).length; var numVideoTracks = pc.transceivers.filter(function(t) { return t.kind === 'video'; }).length; // Determine number of audio and video tracks we need to send/recv. var offerOptions = arguments[0]; if (offerOptions) { // Reject Chrome legacy constraints. if (offerOptions.mandatory || offerOptions.optional) { throw new TypeError( 'Legacy mandatory/optional constraints not supported.'); } if (offerOptions.offerToReceiveAudio !== undefined) { if (offerOptions.offerToReceiveAudio === true) { numAudioTracks = 1; } else if (offerOptions.offerToReceiveAudio === false) { numAudioTracks = 0; } else { numAudioTracks = offerOptions.offerToReceiveAudio; } } if (offerOptions.offerToReceiveVideo !== undefined) { if (offerOptions.offerToReceiveVideo === true) { numVideoTracks = 1; } else if (offerOptions.offerToReceiveVideo === false) { numVideoTracks = 0; } else { numVideoTracks = offerOptions.offerToReceiveVideo; } } } pc.transceivers.forEach(function(transceiver) { if (transceiver.kind === 'audio') { numAudioTracks--; if (numAudioTracks < 0) { transceiver.wantReceive = false; } } else if (transceiver.kind === 'video') { numVideoTracks--; if (numVideoTracks < 0) { transceiver.wantReceive = false; } } }); // Create M-lines for recvonly streams. while (numAudioTracks > 0 || numVideoTracks > 0) { if (numAudioTracks > 0) { pc._createTransceiver('audio'); numAudioTracks--; } if (numVideoTracks > 0) { pc._createTransceiver('video'); numVideoTracks--; } } var sdp$1 = sdp.writeSessionBoilerplate(pc._sdpSessionId, pc._sdpSessionVersion++); pc.transceivers.forEach(function(transceiver, sdpMLineIndex) { // For each track, create an ice gatherer, ice transport, // dtls transport, potentially rtpsender and rtpreceiver. var track = transceiver.track; var kind = transceiver.kind; var mid = transceiver.mid || sdp.generateIdentifier(); transceiver.mid = mid; if (!transceiver.iceGatherer) { transceiver.iceGatherer = pc._createIceGatherer(sdpMLineIndex, pc.usingBundle); } var localCapabilities = window.RTCRtpSender.getCapabilities(kind); // filter RTX until additional stuff needed for RTX is implemented // in adapter.js if (edgeVersion < 15019) { localCapabilities.codecs = localCapabilities.codecs.filter( function(codec) { return codec.name !== 'rtx'; }); } localCapabilities.codecs.forEach(function(codec) { // work around https://bugs.chromium.org/p/webrtc/issues/detail?id=6552 // by adding level-asymmetry-allowed=1 if (codec.name === 'H264' && codec.parameters['level-asymmetry-allowed'] === undefined) { codec.parameters['level-asymmetry-allowed'] = '1'; } // for subsequent offers, we might have to re-use the payload // type of the last offer. if (transceiver.remoteCapabilities && transceiver.remoteCapabilities.codecs) { transceiver.remoteCapabilities.codecs.forEach(function(remoteCodec) { if (codec.name.toLowerCase() === remoteCodec.name.toLowerCase() && codec.clockRate === remoteCodec.clockRate) { codec.preferredPayloadType = remoteCodec.payloadType; } }); } }); localCapabilities.headerExtensions.forEach(function(hdrExt) { var remoteExtensions = transceiver.remoteCapabilities && transceiver.remoteCapabilities.headerExtensions || []; remoteExtensions.forEach(function(rHdrExt) { if (hdrExt.uri === rHdrExt.uri) { hdrExt.id = rHdrExt.id; } }); }); // generate an ssrc now, to be used later in rtpSender.send var sendEncodingParameters = transceiver.sendEncodingParameters || [{ ssrc: (2 * sdpMLineIndex + 1) * 1001 }]; if (track) { // add RTX if (edgeVersion >= 15019 && kind === 'video' && !sendEncodingParameters[0].rtx) { sendEncodingParameters[0].rtx = { ssrc: sendEncodingParameters[0].ssrc + 1 }; } } if (transceiver.wantReceive) { transceiver.rtpReceiver = new window.RTCRtpReceiver( transceiver.dtlsTransport, kind); } transceiver.localCapabilities = localCapabilities; transceiver.sendEncodingParameters = sendEncodingParameters; }); // always offer BUNDLE and dispose on return if not supported. if (pc._config.bundlePolicy !== 'max-compat') { sdp$1 += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) { return t.mid; }).join(' ') + '\r\n'; } sdp$1 += 'a=ice-options:trickle\r\n'; pc.transceivers.forEach(function(transceiver, sdpMLineIndex) { sdp$1 += writeMediaSection(transceiver, transceiver.localCapabilities, 'offer', transceiver.stream, pc._dtlsRole); sdp$1 += 'a=rtcp-rsize\r\n'; if (transceiver.iceGatherer && pc.iceGatheringState !== 'new' && (sdpMLineIndex === 0 || !pc.usingBundle)) { transceiver.iceGatherer.getLocalCandidates().forEach(function(cand) { cand.component = 1; sdp$1 += 'a=' + sdp.writeCandidate(cand) + '\r\n'; }); if (transceiver.iceGatherer.state === 'completed') { sdp$1 += 'a=end-of-candidates\r\n'; } } }); var desc = new window.RTCSessionDescription({ type: 'offer', sdp: sdp$1 }); return Promise.resolve(desc); }; RTCPeerConnection.prototype.createAnswer = function() { var pc = this; if (pc._isClosed) { return Promise.reject(makeError('InvalidStateError', 'Can not call createAnswer after close')); } if (!(pc.signalingState === 'have-remote-offer' || pc.signalingState === 'have-local-pranswer')) { return Promise.reject(makeError('InvalidStateError', 'Can not call createAnswer in signalingState ' + pc.signalingState)); } var sdp$1 = sdp.writeSessionBoilerplate(pc._sdpSessionId, pc._sdpSessionVersion++); if (pc.usingBundle) { sdp$1 += 'a=group:BUNDLE ' + pc.transceivers.map(function(t) { return t.mid; }).join(' ') + '\r\n'; } sdp$1 += 'a=ice-options:trickle\r\n'; var mediaSectionsInOffer = sdp.getMediaSections( pc._remoteDescription.sdp).length; pc.transceivers.forEach(function(transceiver, sdpMLineIndex) { if (sdpMLineIndex + 1 > mediaSectionsInOffer) { return; } if (transceiver.rejected) { if (transceiver.kind === 'application') { if (transceiver.protocol === 'DTLS/SCTP') { // legacy fmt sdp$1 += 'm=application 0 DTLS/SCTP 5000\r\n'; } else { sdp$1 += 'm=application 0 ' + transceiver.protocol + ' webrtc-datachannel\r\n'; } } else if (transceiver.kind === 'audio') { sdp$1 += 'm=audio 0 UDP/TLS/RTP/SAVPF 0\r\n' + 'a=rtpmap:0 PCMU/8000\r\n'; } else if (transceiver.kind === 'video') { sdp$1 += 'm=video 0 UDP/TLS/RTP/SAVPF 120\r\n' + 'a=rtpmap:120 VP8/90000\r\n'; } sdp$1 += 'c=IN IP4 0.0.0.0\r\n' + 'a=inactive\r\n' + 'a=mid:' + transceiver.mid + '\r\n'; return; } // FIXME: look at direction. if (transceiver.stream) { var localTrack; if (transceiver.kind === 'audio') { localTrack = transceiver.stream.getAudioTracks()[0]; } else if (transceiver.kind === 'video') { localTrack = transceiver.stream.getVideoTracks()[0]; } if (localTrack) { // add RTX if (edgeVersion >= 15019 && transceiver.kind === 'video' && !transceiver.sendEncodingParameters[0].rtx) { transceiver.sendEncodingParameters[0].rtx = { ssrc: transceiver.sendEncodingParameters[0].ssrc + 1 }; } } } // Calculate intersection of capabilities. var commonCapabilities = getCommonCapabilities( transceiver.localCapabilities, transceiver.remoteCapabilities); var hasRtx = commonCapabilities.codecs.filter(function(c) { return c.name.toLowerCase() === 'rtx'; }).length; if (!hasRtx && transceiver.sendEncodingParameters[0].rtx) { delete transceiver.sendEncodingParameters[0].rtx; } sdp$1 += writeMediaSection(transceiver, commonCapabilities, 'answer', transceiver.stream, pc._dtlsRole); if (transceiver.rtcpParameters && transceiver.rtcpParameters.reducedSize) { sdp$1 += 'a=rtcp-rsize\r\n'; } }); var desc = new window.RTCSessionDescription({ type: 'answer', sdp: sdp$1 }); return Promise.resolve(desc); }; RTCPeerConnection.prototype.addIceCandidate = function(candidate) { var pc = this; var sections; if (candidate && !(candidate.sdpMLineIndex !== undefined || candidate.sdpMid)) { return Promise.reject(new TypeError('sdpMLineIndex or sdpMid required')); } // TODO: needs to go into ops queue. return new Promise(function(resolve, reject) { if (!pc._remoteDescription) { return reject(makeError('InvalidStateError', 'Can not add ICE candidate without a remote description')); } else if (!candidate || candidate.candidate === '') { for (var j = 0; j < pc.transceivers.length; j++) { if (pc.transceivers[j].rejected) { continue; } pc.transceivers[j].iceTransport.addRemoteCandidate({}); sections = sdp.getMediaSections(pc._remoteDescription.sdp); sections[j] += 'a=end-of-candidates\r\n'; pc._remoteDescription.sdp = sdp.getDescription(pc._remoteDescription.sdp) + sections.join(''); if (pc.usingBundle) { break; } } } else { var sdpMLineIndex = candidate.sdpMLineIndex; if (candidate.sdpMid) { for (var i = 0; i < pc.transceivers.length; i++) { if (pc.transceivers[i].mid === candidate.sdpMid) { sdpMLineIndex = i; break; } } } var transceiver = pc.transceivers[sdpMLineIndex]; if (transceiver) { if (transceiver.rejected) { return resolve(); } var cand = Object.keys(candidate.candidate).length > 0 ? sdp.parseCandidate(candidate.candidate) : {}; // Ignore Chrome's invalid candidates since Edge does not like them. if (cand.protocol === 'tcp' && (cand.port === 0 || cand.port === 9)) { return resolve(); } // Ignore RTCP candidates, we assume RTCP-MUX. if (cand.component && cand.component !== 1) { return resolve(); } // when using bundle, avoid adding candidates to the wrong // ice transport. And avoid adding candidates added in the SDP. if (sdpMLineIndex === 0 || (sdpMLineIndex > 0 && transceiver.iceTransport !== pc.transceivers[0].iceTransport)) { if (!maybeAddCandidate(transceiver.iceTransport, cand)) { return reject(makeError('OperationError', 'Can not add ICE candidate')); } } // update the remoteDescription. var candidateString = candidate.candidate.trim(); if (candidateString.indexOf('a=') === 0) { candidateString = candidateString.substr(2); } sections = sdp.getMediaSections(pc._remoteDescription.sdp); sections[sdpMLineIndex] += 'a=' + (cand.type ? candidateString : 'end-of-candidates') + '\r\n'; pc._remoteDescription.sdp = sdp.getDescription(pc._remoteDescription.sdp) + sections.join(''); } else { return reject(makeError('OperationError', 'Can not add ICE candidate')); } } resolve(); }); }; RTCPeerConnection.prototype.getStats = function(selector) { if (selector && selector instanceof window.MediaStreamTrack) { var senderOrReceiver = null; this.transceivers.forEach(function(transceiver) { if (transceiver.rtpSender && transceiver.rtpSender.track === selector) { senderOrReceiver = transceiver.rtpSender; } else if (transceiver.rtpReceiver && transceiver.rtpReceiver.track === selector) { senderOrReceiver = transceiver.rtpReceiver; } }); if (!senderOrReceiver) { throw makeError('InvalidAccessError', 'Invalid selector.'); } return senderOrReceiver.getStats(); } var promises = []; this.transceivers.forEach(function(transceiver) { ['rtpSender', 'rtpReceiver', 'iceGatherer', 'iceTransport', 'dtlsTransport'].forEach(function(method) { if (transceiver[method]) { promises.push(transceiver[method].getStats()); } }); }); return Promise.all(promises).then(function(allStats) { var results = new Map(); allStats.forEach(function(stats) { stats.forEach(function(stat) { results.set(stat.id, stat); }); }); return results; }); }; // fix low-level stat names and return Map instead of object. var ortcObjects = ['RTCRtpSender', 'RTCRtpReceiver', 'RTCIceGatherer', 'RTCIceTransport', 'RTCDtlsTransport']; ortcObjects.forEach(function(ortcObjectName) { var obj = window[ortcObjectName]; if (obj && obj.prototype && obj.prototype.getStats) { var nativeGetstats = obj.prototype.getStats; obj.prototype.getStats = function() { return nativeGetstats.apply(this) .then(function(nativeStats) { var mapStats = new Map(); Object.keys(nativeStats).forEach(function(id) { nativeStats[id].type = fixStatsType(nativeStats[id]); mapStats.set(id, nativeStats[id]); }); return mapStats; }); }; } }); // legacy callback shims. Should be moved to adapter.js some days. var methods = ['createOffer', 'createAnswer']; methods.forEach(function(method) { var nativeMethod = RTCPeerConnection.prototype[method]; RTCPeerConnection.prototype[method] = function() { var args = arguments; if (typeof args[0] === 'function' || typeof args[1] === 'function') { // legacy return nativeMethod.apply(this, [arguments[2]]) .then(function(description) { if (typeof args[0] === 'function') { args[0].apply(null, [description]); } }, function(error) { if (typeof args[1] === 'function') { args[1].apply(null, [error]); } }); } return nativeMethod.apply(this, arguments); }; }); methods = ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate']; methods.forEach(function(method) { var nativeMethod = RTCPeerConnection.prototype[method]; RTCPeerConnection.prototype[method] = function() { var args = arguments; if (typeof args[1] === 'function' || typeof args[2] === 'function') { // legacy return nativeMethod.apply(this, arguments) .then(function() { if (typeof args[1] === 'function') { args[1].apply(null); } }, function(error) { if (typeof args[2] === 'function') { args[2].apply(null, [error]); } }); } return nativeMethod.apply(this, arguments); }; }); // getStats is special. It doesn't have a spec legacy method yet we support // getStats(something, cb) without error callbacks. ['getStats'].forEach(function(method) { var nativeMethod = RTCPeerConnection.prototype[method]; RTCPeerConnection.prototype[method] = function() { var args = arguments; if (typeof args[1] === 'function') { return nativeMethod.apply(this, arguments) .then(function() { if (typeof args[1] === 'function') { args[1].apply(null); } }); } return nativeMethod.apply(this, arguments); }; }); return RTCPeerConnection; }; /* * 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. */ function shimGetUserMedia$2(window) { const navigator = window && window.navigator; const shimError_ = function(e) { return { name: {PermissionDeniedError: 'NotAllowedError'}[e.name] || e.name, message: e.message, constraint: e.constraint, toString() { return this.name; } }; }; // getUserMedia error shim. const origGetUserMedia = navigator.mediaDevices.getUserMedia. bind(navigator.mediaDevices); navigator.mediaDevices.getUserMedia = function(c) { return origGetUserMedia(c).catch(e => Promise.reject(shimError_(e))); }; } /* * 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. */ function shimGetDisplayMedia$1(window) { if (!('getDisplayMedia' in window.navigator)) { return; } if (!(window.navigator.mediaDevices)) { return; } if (window.navigator.mediaDevices && 'getDisplayMedia' in window.navigator.mediaDevices) { return; } window.navigator.mediaDevices.getDisplayMedia = window.navigator.getDisplayMedia.bind(window.navigator); } /* * 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. */ function shimPeerConnection$1(window, browserDetails) { if (window.RTCIceGatherer) { if (!window.RTCIceCandidate) { window.RTCIceCandidate = function RTCIceCandidate(args) { return args; }; } if (!window.RTCSessionDescription) { window.RTCSessionDescription = function RTCSessionDescription(args) { return args; }; } // this adds an additional event listener to MediaStrackTrack that signals // when a tracks enabled property was changed. Workaround for a bug in // addStream, see below. No longer required in 15025+ if (browserDetails.version < 15025) { const origMSTEnabled = Object.getOwnPropertyDescriptor( window.MediaStreamTrack.prototype, 'enabled'); Object.defineProperty(window.MediaStreamTrack.prototype, 'enabled', { set(value) { origMSTEnabled.set.call(this, value); const ev = new Event('enabled'); ev.enabled = value; this.dispatchEvent(ev); } }); } } // ORTC defines the DTMF sender a bit different. // https://github.com/w3c/ortc/issues/714 if (window.RTCRtpSender && !('dtmf' in window.RTCRtpSender.prototype)) { Object.defineProperty(window.RTCRtpSender.prototype, 'dtmf', { get() { if (this._dtmf === undefined) { if (this.track.kind === 'audio') { this._dtmf = new window.RTCDtmfSender(this); } else if (this.track.kind === 'video') { this._dtmf = null; } } return this._dtmf; } }); } // Edge currently only implements the RTCDtmfSender, not the // RTCDTMFSender alias. See http://draft.ortc.org/#rtcdtmfsender2* if (window.RTCDtmfSender && !window.RTCDTMFSender) { window.RTCDTMFSender = window.RTCDtmfSender; } const RTCPeerConnectionShim = rtcpeerconnection(window, browserDetails.version); window.RTCPeerConnection = function RTCPeerConnection(config) { if (config && config.iceServers) { config.iceServers = filterIceServers$1(config.iceServers, browserDetails.version); log$1('ICE servers after filtering:', config.iceServers); } return new RTCPeerConnectionShim(config); }; window.RTCPeerConnection.prototype = RTCPeerConnectionShim.prototype; } function shimReplaceTrack(window) { // ORTC has replaceTrack -- https://github.com/w3c/ortc/issues/614 if (window.RTCRtpSender && !('replaceTrack' in window.RTCRtpSender.prototype)) { window.RTCRtpSender.prototype.replaceTrack = window.RTCRtpSender.prototype.setTrack; } } var edgeShim = /*#__PURE__*/Object.freeze({ __proto__: null, shimPeerConnection: shimPeerConnection$1, shimReplaceTrack: shimReplaceTrack, shimGetUserMedia: shimGetUserMedia$2, shimGetDisplayMedia: shimGetDisplayMedia$1 }); /* * 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. */ function shimGetUserMedia$1(window, browserDetails) { const navigator = window && window.navigator; const MediaStreamTrack = window && window.MediaStreamTrack; navigator.getUserMedia = function(constraints, onSuccess, onError) { // Replace Firefox 44+'s deprecation warning with unprefixed version. deprecated('navigator.getUserMedia', 'navigator.mediaDevices.getUserMedia'); navigator.mediaDevices.getUserMedia(constraints).then(onSuccess, onError); }; if (!(browserDetails.version > 55 && 'autoGainControl' in navigator.mediaDevices.getSupportedConstraints())) { const remap = function(obj, a, b) { if (a in obj && !(b in obj)) { obj[b] = obj[a]; delete obj[a]; } }; const nativeGetUserMedia = navigator.mediaDevices.getUserMedia. bind(navigator.mediaDevices); navigator.mediaDevices.getUserMedia = function(c) { if (typeof c === 'object' && typeof c.audio === 'object') { c = JSON.parse(JSON.stringify(c)); remap(c.audio, 'autoGainControl', 'mozAutoGainControl'); remap(c.audio, 'noiseSuppression', 'mozNoiseSuppression'); } return nativeGetUserMedia(c); }; if (MediaStreamTrack && MediaStreamTrack.prototype.getSettings) { const nativeGetSettings = MediaStreamTrack.prototype.getSettings; MediaStreamTrack.prototype.getSettings = function() { const obj = nativeGetSettings.apply(this, arguments); remap(obj, 'mozAutoGainControl', 'autoGainControl'); remap(obj, 'mozNoiseSuppression', 'noiseSuppression'); return obj; }; } if (MediaStreamTrack && MediaStreamTrack.prototype.applyConstraints) { const nativeApplyConstraints = MediaStreamTrack.prototype.applyConstraints; MediaStreamTrack.prototype.applyConstraints = function(c) { if (this.kind === 'audio' && typeof c === 'object') { c = JSON.parse(JSON.stringify(c)); remap(c, 'autoGainControl', 'mozAutoGainControl'); remap(c, 'noiseSuppression', 'mozNoiseSuppression'); } return nativeApplyConstraints.apply(this, [c]); }; } } } /* * 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. */ 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)) { const 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); }; } /* * 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. */ function shimOnTrack(window) { if (typeof window === 'object' && window.RTCTrackEvent && ('receiver' in window.RTCTrackEvent.prototype) && !('transceiver' in window.RTCTrackEvent.prototype)) { Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', { get() { return {receiver: this.receiver}; } }); } } function shimPeerConnection(window, browserDetails) { if (typeof window !== 'object' || !(window.RTCPeerConnection || window.mozRTCPeerConnection)) { return; // probably media.peerconnection.enabled=false in about:config } if (!window.RTCPeerConnection && window.mozRTCPeerConnection) { // very basic support for old versions. window.RTCPeerConnection = window.mozRTCPeerConnection; } if (browserDetails.version < 53) { // shim away need for obsolete RTCIceCandidate/RTCSessionDescription. ['setLocalDescription', 'setRemoteDescription', 'addIceCandidate'] .forEach(function(method) { const nativeMethod = window.RTCPeerConnection.prototype[method]; const methodObj = {[method]() { arguments[0] = new ((method === 'addIceCandidate') ? window.RTCIceCandidate : window.RTCSessionDescription)(arguments[0]); return nativeMethod.apply(this, arguments); }}; window.RTCPeerConnection.prototype[method] = methodObj[method]; }); } const modernStatsTypes = { inboundrtp: 'inbound-rtp', outboundrtp: 'outbound-rtp', candidatepair: 'candidate-pair', localcandidate: 'local-candidate', remotecandidate: 'remote-candidate' }; const nativeGetStats = window.RTCPeerConnection.prototype.getStats; window.RTCPeerConnection.prototype.getStats = function getStats() { const [selector, onSucc, onErr] = arguments; return nativeGetStats.apply(this, [selector || null]) .then(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(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((stat, i) => { stats.set(i, Object.assign({}, stat, { type: modernStatsTypes[stat.type] || stat.type })); }); } } return stats; }) .then(onSucc, onErr); }; } function shimSenderGetStats(window) { if (!(typeof window === 'object' && window.RTCPeerConnection && window.RTCRtpSender)) { return; } if (window.RTCRtpSender && 'getStats' in window.RTCRtpSender.prototype) { return; } const origGetSenders = window.RTCPeerConnection.prototype.getSenders; if (origGetSenders) { window.RTCPeerConnection.prototype.getSenders = function getSenders() { const senders = origGetSenders.apply(this, []); senders.forEach(sender => sender._pc = this); return senders; }; } const origAddTrack = window.RTCPeerConnection.prototype.addTrack; if (origAddTrack) { window.RTCPeerConnection.prototype.addTrack = function addTrack() { const sender = origAddTrack.apply(this, arguments); sender._pc = this; return sender; }; } window.RTCRtpSender.prototype.getStats = function getStats() { return this.track ? this._pc.getStats(this.track) : Promise.resolve(new Map()); }; } function shimReceiverGetStats(window) { if (!(typeof window === 'object' && window.RTCPeerConnection && window.RTCRtpSender)) { return; } if (window.RTCRtpSender && 'getStats' in window.RTCRtpReceiver.prototype) { return; } const origGetReceivers = window.RTCPeerConnection.prototype.getReceivers; if (origGetReceivers) { window.RTCPeerConnection.prototype.getReceivers = function getReceivers() { const receivers = origGetReceivers.apply(this, []); receivers.forEach(receiver => receiver._pc = this); return receivers; }; } wrapPeerConnectionEvent(window, 'track', 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) { deprecated('removeStream', 'removeTrack'); this.getSenders().forEach(sender => { if (sender.track && stream.getTracks().includes(sender.track)) { this.removeTrack(sender); } }); }; } function shimRTCDataChannel(window) { // rename DataChannel to RTCDataChannel (native fix in FF60): // https://bugzilla.mozilla.org/show_bug.cgi?id=1173851 if (window.DataChannel && !window.RTCDataChannel) { window.RTCDataChannel = window.DataChannel; } } function shimAddTransceiver(window) { // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647 // Firefox ignores the init sendEncodings options passed to addTransceiver // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918 if (!(typeof window === 'object' && window.RTCPeerConnection)) { return; } const origAddTransceiver = window.RTCPeerConnection.prototype.addTransceiver; if (origAddTransceiver) { window.RTCPeerConnection.prototype.addTransceiver = function addTransceiver() { this.setParametersPromises = []; const initParameters = arguments[1]; const shouldPerformCheck = initParameters && 'sendEncodings' in initParameters; if (shouldPerformCheck) { // If sendEncodings params are provided, validate grammar initParameters.sendEncodings.forEach((encodingParam) => { if ('rid' in encodingParam) { const 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'); } } }); } const 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. const {sender} = transceiver; const 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(() => { delete sender.sendEncodings; }).catch(() => { delete sender.sendEncodings; }) ); } } return transceiver; }; } } function shimGetParameters(window) { if (!(typeof window === 'object' && window.RTCRtpSender)) { return; } const origGetParameters = window.RTCRtpSender.prototype.getParameters; if (origGetParameters) { window.RTCRtpSender.prototype.getParameters = function getParameters() { const params = origGetParameters.apply(this, arguments); if (!('encodings' in params)) { params.encodings = [].concat(this.sendEncodings || [{}]); } return params; }; } } function shimCreateOffer(window) { // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647 // Firefox ignores the init sendEncodings options passed to addTransceiver // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918 if (!(typeof window === 'object' && window.RTCPeerConnection)) { return; } const origCreateOffer = window.RTCPeerConnection.prototype.createOffer; window.RTCPeerConnection.prototype.createOffer = function createOffer() { if (this.setParametersPromises && this.setParametersPromises.length) { return Promise.all(this.setParametersPromises) .then(() => { return origCreateOffer.apply(this, arguments); }) .finally(() => { this.setParametersPromises = []; }); } return origCreateOffer.apply(this, arguments); }; } function shimCreateAnswer(window) { // https://github.com/webrtcHacks/adapter/issues/998#issuecomment-516921647 // Firefox ignores the init sendEncodings options passed to addTransceiver // https://bugzilla.mozilla.org/show_bug.cgi?id=1396918 if (!(typeof window === 'object' && window.RTCPeerConnection)) { return; } const origCreateAnswer = window.RTCPeerConnection.prototype.createAnswer; window.RTCPeerConnection.prototype.createAnswer = function createAnswer() { if (this.setParametersPromises && this.setParametersPromises.length) { return Promise.all(this.setParametersPromises) .then(() => { return origCreateAnswer.apply(this, arguments); }) .finally(() => { this.setParametersPromises = []; }); } return origCreateAnswer.apply(this, arguments); }; } var firefoxShim = /*#__PURE__*/Object.freeze({ __proto__: null, shimOnTrack: shimOnTrack, shimPeerConnection: shimPeerConnection, shimSenderGetStats: shimSenderGetStats, shimReceiverGetStats: shimReceiverGetStats, shimRemoveStream: shimRemoveStream, shimRTCDataChannel: shimRTCDataChannel, shimAddTransceiver: shimAddTransceiver, shimGetParameters: shimGetParameters, shimCreateOffer: shimCreateOffer, shimCreateAnswer: shimCreateAnswer, shimGetUserMedia: shimGetUserMedia$1, shimGetDisplayMedia: shimGetDisplayMedia }); /* * 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. */ function shimLocalStreamsAPI(window) { if (typeof window !== 'object' || !window.RTCPeerConnection) { return; } if (!('getLocalStreams' in window.RTCPeerConnection.prototype)) { window.RTCPeerConnection.prototype.getLocalStreams = function getLocalStreams() { if (!this._localStreams) { this._localStreams = []; } return this._localStreams; }; } if (!('addStream' in window.RTCPeerConnection.prototype)) { const _addTrack = window.RTCPeerConnection.prototype.addTrack; window.RTCPeerConnection.prototype.addStream = function addStream(stream) { 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(track => _addTrack.call(this, track, stream)); stream.getVideoTracks().forEach(track => _addTrack.call(this, track, stream)); }; window.RTCPeerConnection.prototype.addTrack = function addTrack(track, ...streams) { if (streams) { streams.forEach((stream) => { if (!this._localStreams) { this._localStreams = [stream]; } else if (!this._localStreams.includes(stream)) { this._localStreams.push(stream); } }); } return _addTrack.apply(this, arguments); }; } if (!('removeStream' in window.RTCPeerConnection.prototype)) { window.RTCPeerConnection.prototype.removeStream = function removeStream(stream) { if (!this._localStreams) { this._localStreams = []; } const index = this._localStreams.indexOf(stream); if (index === -1) { return; } this._localStreams.splice(index, 1); const tracks = stream.getTracks(); this.getSenders().forEach(sender => { if (tracks.includes(sender.track)) { this.removeTrack(sender); } }); }; } } function shimRemoteStreamsAPI(window) { if (typeof window !== 'object' || !window.RTCPeerConnection) { return; } if (!('getRemoteStreams' in window.RTCPeerConnection.prototype)) { window.RTCPeerConnection.prototype.getRemoteStreams = function getRemoteStreams() { return this._remoteStreams ? this._remoteStreams : []; }; } if (!('onaddstream' in window.RTCPeerConnection.prototype)) { Object.defineProperty(window.RTCPeerConnection.prototype, 'onaddstream', { get() { return this._onaddstream; }, set(f) { if (this._onaddstream) { this.removeEventListener('addstream', this._onaddstream); this.removeEventListener('track', this._onaddstreampoly); } this.addEventListener('addstream', this._onaddstream = f); this.addEventListener('track', this._onaddstreampoly = (e) => { e.streams.forEach(stream => { if (!this._remoteStreams) { this._remoteStreams = []; } if (this._remoteStreams.includes(stream)) { return; } this._remoteStreams.push(stream); const event = new Event('addstream'); event.stream = stream; this.dispatchEvent(event); }); }); } }); const origSetRemoteDescription = window.RTCPeerConnection.prototype.setRemoteDescription; window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription() { const pc = this; if (!this._onaddstreampoly) { this.addEventListener('track', this._onaddstreampoly = function(e) { e.streams.forEach(stream => { if (!pc._remoteStreams) { pc._remoteStreams = []; } if (pc._remoteStreams.indexOf(stream) >= 0) { return; } pc._remoteStreams.push(stream); const event = new Event('addstream'); event.stream = stream; pc.dispatchEvent(event); }); }); } return origSetRemoteDescription.apply(pc, arguments); }; } } function shimCallbacksAPI(window) { if (typeof window !== 'object' || !window.RTCPeerConnection) { return; } const prototype = window.RTCPeerConnection.prototype; const origCreateOffer = prototype.createOffer; const origCreateAnswer = prototype.createAnswer; const setLocalDescription = prototype.setLocalDescription; const setRemoteDescription = prototype.setRemoteDescription; const addIceCandidate = prototype.addIceCandidate; prototype.createOffer = function createOffer(successCallback, failureCallback) { const options = (arguments.length >= 2) ? arguments[2] : arguments[0]; const promise = origCreateOffer.apply(this, [options]); if (!failureCallback) { return promise; } promise.then(successCallback, failureCallback); return Promise.resolve(); }; prototype.createAnswer = function createAnswer(successCallback, failureCallback) { const options = (arguments.length >= 2) ? arguments[2] : arguments[0]; const promise = origCreateAnswer.apply(this, [options]); if (!failureCallback) { return promise; } promise.then(successCallback, failureCallback); return Promise.resolve(); }; let withCallback = function(description, successCallback, failureCallback) { const promise = setLocalDescription.apply(this, [description]); if (!failureCallback) { return promise; } promise.then(successCallback, failureCallback); return Promise.resolve(); }; prototype.setLocalDescription = withCallback; withCallback = function(description, successCallback, failureCallback) { const promise = setRemoteDescription.apply(this, [description]); if (!failureCallback) { return promise; } promise.then(successCallback, failureCallback); return Promise.resolve(); }; prototype.setRemoteDescription = withCallback; withCallback = function(candidate, successCallback, failureCallback) { const promise = addIceCandidate.apply(this, [candidate]); if (!failureCallback) { return promise; } promise.then(successCallback, failureCallback); return Promise.resolve(); }; prototype.addIceCandidate = withCallback; } function shimGetUserMedia(window) { const navigator = window && window.navigator; if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) { // shim not needed in Safari 12.1 const mediaDevices = navigator.mediaDevices; const _getUserMedia = mediaDevices.getUserMedia.bind(mediaDevices); navigator.mediaDevices.getUserMedia = (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: compactObject(constraints.video)} ); } return constraints; } function shimRTCIceServerUrls(window) { if (!window.RTCPeerConnection) { return; } // migrate from non-spec RTCIceServer.url to RTCIceServer.urls const OrigPeerConnection = window.RTCPeerConnection; window.RTCPeerConnection = function RTCPeerConnection(pcConfig, pcConstraints) { if (pcConfig && pcConfig.iceServers) { const newIceServers = []; for (let i = 0; i < pcConfig.iceServers.length; i++) { let server = pcConfig.iceServers[i]; if (!server.hasOwnProperty('urls') && server.hasOwnProperty('url')) { 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() { return OrigPeerConnection.generateCertificate; } }); } } function shimTrackEventTransceiver(window) { // Add event.transceiver member over deprecated event.receiver if (typeof window === 'object' && window.RTCTrackEvent && 'receiver' in window.RTCTrackEvent.prototype && !('transceiver' in window.RTCTrackEvent.prototype)) { Object.defineProperty(window.RTCTrackEvent.prototype, 'transceiver', { get() { return {receiver: this.receiver}; } }); } } function shimCreateOfferLegacy(window) { const 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; } const audioTransceiver = this.getTransceivers().find(transceiver => transceiver.receiver.track.kind === 'audio'); if (offerOptions.offerToReceiveAudio === false && audioTransceiver) { if (audioTransceiver.direction === 'sendrecv') { if (audioTransceiver.setDirection) { audioTransceiver.setDirection('sendonly'); } else { audioTransceiver.direction = 'sendonly'; } } else if (audioTransceiver.direction === 'recvonly') { if (audioTransceiver.setDirection) { audioTransceiver.setDirection('inactive'); } else { audioTransceiver.direction = 'inactive'; } } } else if (offerOptions.offerToReceiveAudio === true && !audioTransceiver) { this.addTransceiver('audio'); } if (typeof offerOptions.offerToReceiveVideo !== 'undefined') { // support bit values offerOptions.offerToReceiveVideo = !!offerOptions.offerToReceiveVideo; } const videoTransceiver = this.getTransceivers().find(transceiver => transceiver.receiver.track.kind === 'video'); if (offerOptions.offerToReceiveVideo === false && videoTransceiver) { if (videoTransceiver.direction === 'sendrecv') { if (videoTransceiver.setDirection) { videoTransceiver.setDirection('sendonly'); } else { videoTransceiver.direction = 'sendonly'; } } else if (videoTransceiver.direction === 'recvonly') { if (videoTransceiver.setDirection) { videoTransceiver.setDirection('inactive'); } else { videoTransceiver.direction = 'inactive'; } } } else if (offerOptions.offerToReceiveVideo === true && !videoTransceiver) { this.addTransceiver('video'); } } return origCreateOffer.apply(this, arguments); }; } function shimAudioContext(window) { if (typeof window !== 'object' || window.AudioContext) { return; } window.AudioContext = window.webkitAudioContext; } var safariShim = /*#__PURE__*/Object.freeze({ __proto__: null, shimLocalStreamsAPI: shimLocalStreamsAPI, shimRemoteStreamsAPI: shimRemoteStreamsAPI, shimCallbacksAPI: shimCallbacksAPI, shimGetUserMedia: shimGetUserMedia, shimConstraints: shimConstraints, shimRTCIceServerUrls: shimRTCIceServerUrls, shimTrackEventTransceiver: shimTrackEventTransceiver, shimCreateOfferLegacy: shimCreateOfferLegacy, shimAudioContext: shimAudioContext }); /* * 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. */ 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; } const NativeRTCIceCandidate = window.RTCIceCandidate; window.RTCIceCandidate = function RTCIceCandidate(args) { // Remove the a= which shouldn't be part of the candidate string. if (typeof args === 'object' && args.candidate && args.candidate.indexOf('a=') === 0) { args = JSON.parse(JSON.stringify(args)); args.candidate = args.candidate.substr(2); } if (args.candidate && args.candidate.length) { // Augment the native candidate with the parsed fields. const nativeCandidate = new NativeRTCIceCandidate(args); const parsedCandidate = sdp.parseCandidate(args.candidate); const 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', ...) wrapPeerConnectionEvent(window, 'icecandidate', 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() { return typeof this._sctp === 'undefined' ? null : this._sctp; } }); } const sctpInDescription = function(description) { if (!description || !description.sdp) { return false; } const sections = sdp.splitSections(description.sdp); sections.shift(); return sections.some(mediaSection => { const mLine = sdp.parseMLine(mediaSection); return mLine && mLine.kind === 'application' && mLine.protocol.indexOf('SCTP') !== -1; }); }; const getRemoteFirefoxVersion = function(description) { // TODO: Is there a better solution for detecting Firefox? const match = description.sdp.match(/mozilla...THIS_IS_SDPARTA-(\d+)/); if (match === null || match.length < 2) { return -1; } const version = parseInt(match[1], 10); // Test for NaN (yes, this is ugly) return version !== version ? -1 : version; }; const getCanSendMaxMessageSize = function(remoteIsFirefox) { // Every implementation we know can send at least 64 KiB. // Note: Although Chrome is technically able to send up to 256 KiB, the // data does not reach the other peer reliably. // See: https://bugs.chromium.org/p/webrtc/issues/detail?id=8419 let 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; }; const getMaxMessageSize = function(description, remoteIsFirefox) { // Note: 65536 bytes is the default value from the SDP spec. Also, // every implementation we know supports receiving 65536 bytes. let 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; } const match = sdp.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; }; const 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) { const {sdpSemantics} = this.getConfiguration(); if (sdpSemantics === 'plan-b') { Object.defineProperty(this, 'sctp', { get() { return typeof this._sctp === 'undefined' ? null : this._sctp; }, enumerable: true, configurable: true, }); } } if (sctpInDescription(arguments[0])) { // Check if the remote is FF. const isFirefox = getRemoteFirefoxVersion(arguments[0]); // Get the maximum message size the local peer is capable of sending const canSendMMS = getCanSendMaxMessageSize(isFirefox); // Get the maximum message size of the remote peer. const remoteMMS = getMaxMessageSize(arguments[0], isFirefox); // Determine final maximum message size let maxMessageSize; if (canSendMMS === 0 && remoteMMS === 0) { maxMessageSize = Number.POSITIVE_INFINITY; } else if (canSendMMS === 0 || remoteMMS === 0) { maxMessageSize = Math.max(canSendMMS, remoteMMS); } else { maxMessageSize = Math.min(canSendMMS, remoteMMS); } // Create a dummy RTCSctpTransport object and the 'maxMessageSize' // attribute. const sctp = {}; Object.defineProperty(sctp, 'maxMessageSize', { 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) { const origDataChannelSend = dc.send; dc.send = function send() { const data = arguments[0]; const 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); }; } const origCreateDataChannel = window.RTCPeerConnection.prototype.createDataChannel; window.RTCPeerConnection.prototype.createDataChannel = function createDataChannel() { const dataChannel = origCreateDataChannel.apply(this, arguments); wrapDcSend(dataChannel, this); return dataChannel; }; wrapPeerConnectionEvent(window, 'datachannel', 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; } const proto = window.RTCPeerConnection.prototype; Object.defineProperty(proto, 'connectionState', { get() { return { completed: 'connected', checking: 'connecting' }[this.iceConnectionState] || this.iceConnectionState; }, enumerable: true, configurable: true }); Object.defineProperty(proto, 'onconnectionstatechange', { get() { return this._onconnectionstatechange || null; }, 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((method) => { const origMethod = proto[method]; proto[method] = function() { if (!this._connectionstatechangepoly) { this._connectionstatechangepoly = e => { const pc = e.target; if (pc._lastConnectionState !== pc.connectionState) { pc._lastConnectionState = pc.connectionState; const 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; } const nativeSRD = window.RTCPeerConnection.prototype.setRemoteDescription; window.RTCPeerConnection.prototype.setRemoteDescription = function setRemoteDescription(desc) { if (desc && desc.sdp && desc.sdp.indexOf('\na=extmap-allow-mixed') !== -1) { const sdp = desc.sdp.split('\n').filter((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, }); } 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; } const 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); }; } var commonShim = /*#__PURE__*/Object.freeze({ __proto__: null, shimRTCIceCandidate: shimRTCIceCandidate, shimMaxMessageSize: shimMaxMessageSize, shimSendThrowTypeError: shimSendThrowTypeError, shimConnectionState: shimConnectionState, removeExtmapAllowMixed: removeExtmapAllowMixed, shimAddIceCandidateNullOrEmpty: shimAddIceCandidateNullOrEmpty }); /* * 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. */ // Shimming starts here. function adapterFactory({window} = {}, options = { shimChrome: true, shimFirefox: true, shimEdge: true, shimSafari: true, }) { // Utils. const logging = log$1; const browserDetails = detectBrowser(window); const adapter = { browserDetails, commonShim, extractVersion: extractVersion, disableLog: disableLog, disableWarnings: disableWarnings }; // Shim browser if found. switch (browserDetails.browser) { case 'chrome': if (!chromeShim || !shimPeerConnection$2 || !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. shimAddIceCandidateNullOrEmpty(window, browserDetails); shimGetUserMedia$3(window, browserDetails); shimMediaStream(window); shimPeerConnection$2(window, browserDetails); shimOnTrack$1(window); shimAddTrackRemoveTrack(window, browserDetails); shimGetSendersWithDtmf(window); shimGetStats(window); shimSenderReceiverGetStats(window); fixNegotiationNeeded(window, browserDetails); shimRTCIceCandidate(window); shimConnectionState(window); shimMaxMessageSize(window, browserDetails); shimSendThrowTypeError(window); removeExtmapAllowMixed(window, browserDetails); break; case 'firefox': if (!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. shimAddIceCandidateNullOrEmpty(window, browserDetails); shimGetUserMedia$1(window, browserDetails); shimPeerConnection(window, browserDetails); shimOnTrack(window); shimRemoveStream(window); shimSenderGetStats(window); shimReceiverGetStats(window); shimRTCDataChannel(window); shimAddTransceiver(window); shimGetParameters(window); shimCreateOffer(window); shimCreateAnswer(window); shimRTCIceCandidate(window); shimConnectionState(window); shimMaxMessageSize(window, browserDetails); shimSendThrowTypeError(window); break; case 'edge': if (!edgeShim || !shimPeerConnection$1 || !options.shimEdge) { logging('MS edge shim is not included in this adapter release.'); return adapter; } logging('adapter.js shimming edge.'); // Export to the adapter global object visible in the browser. adapter.browserShim = edgeShim; shimGetUserMedia$2(window); shimGetDisplayMedia$1(window); shimPeerConnection$1(window, browserDetails); shimReplaceTrack(window); // the edge shim implements the full RTCIceCandidate object. shimMaxMessageSize(window, browserDetails); shimSendThrowTypeError(window); 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. shimAddIceCandidateNullOrEmpty(window, browserDetails); shimRTCIceServerUrls(window); shimCreateOfferLegacy(window); shimCallbacksAPI(window); shimLocalStreamsAPI(window); shimRemoteStreamsAPI(window); shimTrackEventTransceiver(window); shimGetUserMedia(window); shimAudioContext(window); shimRTCIceCandidate(window); shimMaxMessageSize(window, browserDetails); shimSendThrowTypeError(window); removeExtmapAllowMixed(window, browserDetails); break; default: logging('Unsupported browser!'); break; } return adapter; } /* * 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. */ adapterFactory({window: typeof window === 'undefined' ? undefined : window}); /** * @class AudioTrackConstraints * @classDesc Constraints for creating an audio MediaStreamTrack. * @memberof Owt.Base * @constructor * @param {Owt.Base.AudioSourceInfo} source Source info of this audio track. */ class AudioTrackConstraints { // eslint-disable-next-line require-jsdoc constructor(source) { if (!Object.values(AudioSourceInfo).some(v => v === source)) { throw new TypeError('Invalid source.'); } /** * @member {string} source * @memberof Owt.Base.AudioTrackConstraints * @desc Values could be "mic", "screen-cast", "file" or "mixed". * @instance */ this.source = source; /** * @member {string} deviceId * @memberof Owt.Base.AudioTrackConstraints * @desc Do not provide deviceId if source is not "mic". * @instance * @see https://w3c.github.io/mediacapture-main/#def-constraint-deviceId */ this.deviceId = undefined; } } /** * @class VideoTrackConstraints * @classDesc Constraints for creating a video MediaStreamTrack. * @memberof Owt.Base * @constructor * @param {Owt.Base.VideoSourceInfo} source Source info of this video track. */ class VideoTrackConstraints { // eslint-disable-next-line require-jsdoc constructor(source) { if (!Object.values(VideoSourceInfo).some(v => v === source)) { throw new TypeError('Invalid source.'); } /** * @member {string} source * @memberof Owt.Base.VideoTrackConstraints * @desc Values could be "camera", "screen-cast", "file" or "mixed". * @instance */ this.source = source; /** * @member {string} deviceId * @memberof Owt.Base.VideoTrackConstraints * @desc Do not provide deviceId if source is not "camera". * @instance * @see https://w3c.github.io/mediacapture-main/#def-constraint-deviceId */ this.deviceId = undefined; /** * @member {Owt.Base.Resolution} resolution * @memberof Owt.Base.VideoTrackConstraints * @instance */ this.resolution = undefined; /** * @member {number} frameRate * @memberof Owt.Base.VideoTrackConstraints * @instance */ this.frameRate = undefined; } } /** * @class StreamConstraints * @classDesc Constraints for creating a MediaStream from screen mic and camera. * @memberof Owt.Base * @constructor * @param {?Owt.Base.AudioTrackConstraints} audioConstraints * @param {?Owt.Base.VideoTrackConstraints} videoConstraints */ class StreamConstraints { // eslint-disable-next-line require-jsdoc constructor(audioConstraints = false, videoConstraints = false) { /** * @member {Owt.Base.MediaStreamTrackDeviceConstraintsForAudio} audio * @memberof Owt.Base.MediaStreamDeviceConstraints * @instance */ this.audio = audioConstraints; /** * @member {Owt.Base.MediaStreamTrackDeviceConstraintsForVideo} Video * @memberof Owt.Base.MediaStreamDeviceConstraints * @instance */ this.video = videoConstraints; } } // eslint-disable-next-line require-jsdoc function isVideoConstrainsForScreenCast(constraints) { return typeof constraints.video === 'object' && constraints.video.source === VideoSourceInfo.SCREENCAST; } /** * @class MediaStreamFactory * @classDesc A factory to create MediaStream. You can also create MediaStream by yourself. * @memberof Owt.Base */ class MediaStreamFactory { /** * @function createMediaStream * @static * @desc Create a MediaStream with given constraints. If you want to create a MediaStream for screen cast, please make sure both audio and video's source are "screen-cast". * @memberof Owt.Base.MediaStreamFactory * @return {Promise} Return a promise that is resolved when stream is successfully created, or rejected if one of the following error happened: * - One or more parameters cannot be satisfied. * - Specified device is busy. * - Cannot obtain necessary permission or operation is canceled by user. * - Video source is screen cast, while audio source is not. * - Audio source is screen cast, while video source is disabled. * @param {Owt.Base.StreamConstraints} constraints */ static createMediaStream(constraints) { if (typeof constraints !== 'object' || !constraints.audio && !constraints.video) { return Promise.reject(new TypeError('Invalid constrains')); } if (!isVideoConstrainsForScreenCast(constraints) && typeof constraints.audio === 'object' && constraints.audio.source === AudioSourceInfo.SCREENCAST) { return Promise.reject(new TypeError('Cannot share screen without video.')); } if (isVideoConstrainsForScreenCast(constraints) && !isChrome() && !isFirefox()) { return Promise.reject(new TypeError('Screen sharing only supports Chrome and Firefox.')); } if (isVideoConstrainsForScreenCast(constraints) && typeof constraints.audio === 'object' && constraints.audio.source !== AudioSourceInfo.SCREENCAST) { return Promise.reject(new TypeError('Cannot capture video from screen cast while capture audio from' + ' other source.')); } // Check and convert constraints. if (!constraints.audio && !constraints.video) { return Promise.reject(new TypeError('At least one of audio and video must be requested.')); } const mediaConstraints = Object.create({}); if (typeof constraints.audio === 'object' && constraints.audio.source === AudioSourceInfo.MIC) { mediaConstraints.audio = Object.create({}); if (isEdge()) { mediaConstraints.audio.deviceId = constraints.audio.deviceId; } else { mediaConstraints.audio.deviceId = { exact: constraints.audio.deviceId }; } } else { if (constraints.audio.source === AudioSourceInfo.SCREENCAST) { mediaConstraints.audio = true; } else { mediaConstraints.audio = constraints.audio; } } if (typeof constraints.video === 'object') { mediaConstraints.video = Object.create({}); if (typeof constraints.video.frameRate === 'number') { mediaConstraints.video.frameRate = constraints.video.frameRate; } if (constraints.video.resolution && constraints.video.resolution.width && constraints.video.resolution.height) { if (constraints.video.source === VideoSourceInfo.SCREENCAST) { mediaConstraints.video.width = constraints.video.resolution.width; mediaConstraints.video.height = constraints.video.resolution.height; } else { mediaConstraints.video.width = Object.create({}); mediaConstraints.video.width.exact = constraints.video.resolution.width; mediaConstraints.video.height = Object.create({}); mediaConstraints.video.height.exact = constraints.video.resolution.height; } } if (typeof constraints.video.deviceId === 'string') { mediaConstraints.video.deviceId = { exact: constraints.video.deviceId }; } if (isFirefox() && constraints.video.source === VideoSourceInfo.SCREENCAST) { mediaConstraints.video.mediaSource = 'screen'; } } else { mediaConstraints.video = constraints.video; } if (isVideoConstrainsForScreenCast(constraints)) { return navigator.mediaDevices.getDisplayMedia(mediaConstraints); } else { return navigator.mediaDevices.getUserMedia(mediaConstraints); } } } // Copyright (C) <2018> Intel Corporation var media = /*#__PURE__*/Object.freeze({ __proto__: null, AudioTrackConstraints: AudioTrackConstraints, VideoTrackConstraints: VideoTrackConstraints, StreamConstraints: StreamConstraints, MediaStreamFactory: MediaStreamFactory, AudioSourceInfo: AudioSourceInfo, VideoSourceInfo: VideoSourceInfo, TrackKind: TrackKind, Resolution: Resolution }); let logger; let errorLogger; function setLogger() { /*eslint-disable */ logger = console.log; errorLogger = console.error; /*eslint-enable */ } function log(message, ...optionalParams) { if (logger) { logger(message, ...optionalParams); } } function error(message, ...optionalParams) { if (errorLogger) { errorLogger(message, ...optionalParams); } } class Event$1 { constructor(type) { this.listener = {}; this.type = type | ''; } on(event, fn) { if (!this.listener[event]) { this.listener[event] = []; } this.listener[event].push(fn); return true; } off(event, fn) { if (this.listener[event]) { var index = this.listener[event].indexOf(fn); if (index > -1) { this.listener[event].splice(index, 1); } return true; } return false; } offAll() { this.listener = {}; } dispatch(event, data) { if (this.listener[event]) { this.listener[event].map(each => { each.apply(null, [data]); }); return true; } return false; } } var bind = function bind(fn, thisArg) { return function wrap() { var args = new Array(arguments.length); for (var i = 0; i < args.length; i++) { args[i] = arguments[i]; } return fn.apply(thisArg, args); }; }; /*global toString:true*/ // utils is a library of generic helper functions non-specific to axios var toString = Object.prototype.toString; /** * Determine if a value is an Array * * @param {Object} val The value to test * @returns {boolean} True if value is an Array, otherwise false */ function isArray(val) { return toString.call(val) === '[object Array]'; } /** * Determine if a value is undefined * * @param {Object} val The value to test * @returns {boolean} True if the value is undefined, otherwise false */ function isUndefined(val) { return typeof val === 'undefined'; } /** * Determine if a value is a Buffer * * @param {Object} val The value to test * @returns {boolean} True if value is a Buffer, otherwise false */ function isBuffer(val) { return val !== null && !isUndefined(val) && val.constructor !== null && !isUndefined(val.constructor) && typeof val.constructor.isBuffer === 'function' && val.constructor.isBuffer(val); } /** * Determine if a value is an ArrayBuffer * * @param {Object} val The value to test * @returns {boolean} True if value is an ArrayBuffer, otherwise false */ function isArrayBuffer(val) { return toString.call(val) === '[object ArrayBuffer]'; } /** * Determine if a value is a FormData * * @param {Object} val The value to test * @returns {boolean} True if value is an FormData, otherwise false */ function isFormData(val) { return (typeof FormData !== 'undefined') && (val instanceof FormData); } /** * Determine if a value is a view on an ArrayBuffer * * @param {Object} val The value to test * @returns {boolean} True if value is a view on an ArrayBuffer, otherwise false */ function isArrayBufferView(val) { var result; if ((typeof ArrayBuffer !== 'undefined') && (ArrayBuffer.isView)) { result = ArrayBuffer.isView(val); } else { result = (val) && (val.buffer) && (val.buffer instanceof ArrayBuffer); } return result; } /** * Determine if a value is a String * * @param {Object} val The value to test * @returns {boolean} True if value is a String, otherwise false */ function isString(val) { return typeof val === 'string'; } /** * Determine if a value is a Number * * @param {Object} val The value to test * @returns {boolean} True if value is a Number, otherwise false */ function isNumber(val) { return typeof val === 'number'; } /** * Determine if a value is an Object * * @param {Object} val The value to test * @returns {boolean} True if value is an Object, otherwise false */ function isObject(val) { return val !== null && typeof val === 'object'; } /** * Determine if a value is a plain Object * * @param {Object} val The value to test * @return {boolean} True if value is a plain Object, otherwise false */ function isPlainObject(val) { if (toString.call(val) !== '[object Object]') { return false; } var prototype = Object.getPrototypeOf(val); return prototype === null || prototype === Object.prototype; } /** * Determine if a value is a Date * * @param {Object} val The value to test * @returns {boolean} True if value is a Date, otherwise false */ function isDate(val) { return toString.call(val) === '[object Date]'; } /** * Determine if a value is a File * * @param {Object} val The value to test * @returns {boolean} True if value is a File, otherwise false */ function isFile(val) { return toString.call(val) === '[object File]'; } /** * Determine if a value is a Blob * * @param {Object} val The value to test * @returns {boolean} True if value is a Blob, otherwise false */ function isBlob(val) { return toString.call(val) === '[object Blob]'; } /** * Determine if a value is a Function * * @param {Object} val The value to test * @returns {boolean} True if value is a Function, otherwise false */ function isFunction(val) { return toString.call(val) === '[object Function]'; } /** * Determine if a value is a Stream * * @param {Object} val The value to test * @returns {boolean} True if value is a Stream, otherwise false */ function isStream(val) { return isObject(val) && isFunction(val.pipe); } /** * Determine if a value is a URLSearchParams object * * @param {Object} val The value to test * @returns {boolean} True if value is a URLSearchParams object, otherwise false */ function isURLSearchParams(val) { return typeof URLSearchParams !== 'undefined' && val instanceof URLSearchParams; } /** * Trim excess whitespace off the beginning and end of a string * * @param {String} str The String to trim * @returns {String} The String freed of excess whitespace */ function trim(str) { return str.replace(/^\s*/, '').replace(/\s*$/, ''); } /** * Determine if we're running in a standard browser environment * * This allows axios to run in a web worker, and react-native. * Both environments support XMLHttpRequest, but not fully standard globals. * * web workers: * typeof window -> undefined * typeof document -> undefined * * react-native: * navigator.product -> 'ReactNative' * nativescript * navigator.product -> 'NativeScript' or 'NS' */ function isStandardBrowserEnv() { if (typeof navigator !== 'undefined' && (navigator.product === 'ReactNative' || navigator.product === 'NativeScript' || navigator.product === 'NS')) { return false; } return ( typeof window !== 'undefined' && typeof document !== 'undefined' ); } /** * Iterate over an Array or an Object invoking a function for each item. * * If `obj` is an Array callback will be called passing * the value, index, and complete array for each item. * * If 'obj' is an Object callback will be called passing * the value, key, and complete object for each property. * * @param {Object|Array} obj The object to iterate * @param {Function} fn The callback to invoke for each item */ function forEach(obj, fn) { // Don't bother if no value provided if (obj === null || typeof obj === 'undefined') { return; } // Force an array if not already something iterable if (typeof obj !== 'object') { /*eslint no-param-reassign:0*/ obj = [obj]; } if (isArray(obj)) { // Iterate over array values for (var i = 0, l = obj.length; i < l; i++) { fn.call(null, obj[i], i, obj); } } else { // Iterate over object keys for (var key in obj) { if (Object.prototype.hasOwnProperty.call(obj, key)) { fn.call(null, obj[key], key, obj); } } } } /** * Accepts varargs expecting each argument to be an object, then * immutably merges the properties of each object and returns result. * * When multiple objects contain the same key the later object in * the arguments list will take precedence. * * Example: * * ```js * var result = merge({foo: 123}, {foo: 456}); * console.log(result.foo); // outputs 456 * ``` * * @param {Object} obj1 Object to merge * @returns {Object} Result of all merge properties */ function merge(/* obj1, obj2, obj3, ... */) { var result = {}; function assignValue(val, key) { if (isPlainObject(result[key]) && isPlainObject(val)) { result[key] = merge(result[key], val); } else if (isPlainObject(val)) { result[key] = merge({}, val); } else if (isArray(val)) { result[key] = val.slice(); } else { result[key] = val; } } for (var i = 0, l = arguments.length; i < l; i++) { forEach(arguments[i], assignValue); } return result; } /** * Extends object a by mutably adding to it the properties of object b. * * @param {Object} a The object to be extended * @param {Object} b The object to copy properties from * @param {Object} thisArg The object to bind function to * @return {Object} The resulting value of object a */ function extend(a, b, thisArg) { forEach(b, function assignValue(val, key) { if (thisArg && typeof val === 'function') { a[key] = bind(val, thisArg); } else { a[key] = val; } }); return a; } /** * Remove byte order marker. This catches EF BB BF (the UTF-8 BOM) * * @param {string} content with BOM * @return {string} content value without BOM */ function stripBOM(content) { if (content.charCodeAt(0) === 0xFEFF) { content = content.slice(1); } return content; } var utils = { isArray: isArray, isArrayBuffer: isArrayBuffer, isBuffer: isBuffer, isFormData: isFormData, isArrayBufferView: isArrayBufferView, isString: isString, isNumber: isNumber, isObject: isObject, isPlainObject: isPlainObject, isUndefined: isUndefined, isDate: isDate, isFile: isFile, isBlob: isBlob, isFunction: isFunction, isStream: isStream, isURLSearchParams: isURLSearchParams, isStandardBrowserEnv: isStandardBrowserEnv, forEach: forEach, merge: merge, extend: extend, trim: trim, stripBOM: stripBOM }; function encode(val) { return encodeURIComponent(val). replace(/%3A/gi, ':'). replace(/%24/g, '$'). replace(/%2C/gi, ','). replace(/%20/g, '+'). replace(/%5B/gi, '['). replace(/%5D/gi, ']'); } /** * Build a URL by appending params to the end * * @param {string} url The base of the url (e.g., http://www.google.com) * @param {object} [params] The params to be appended * @returns {string} The formatted url */ var buildURL = function buildURL(url, params, paramsSerializer) { /*eslint no-param-reassign:0*/ if (!params) { return url; } var serializedParams; if (paramsSerializer) { serializedParams = paramsSerializer(params); } else if (utils.isURLSearchParams(params)) { serializedParams = params.toString(); } else { var parts = []; utils.forEach(params, function serialize(val, key) { if (val === null || typeof val === 'undefined') { return; } if (utils.isArray(val)) { key = key + '[]'; } else { val = [val]; } utils.forEach(val, function parseValue(v) { if (utils.isDate(v)) { v = v.toISOString(); } else if (utils.isObject(v)) { v = JSON.stringify(v); } parts.push(encode(key) + '=' + encode(v)); }); }); serializedParams = parts.join('&'); } if (serializedParams) { var hashmarkIndex = url.indexOf('#'); if (hashmarkIndex !== -1) { url = url.slice(0, hashmarkIndex); } url += (url.indexOf('?') === -1 ? '?' : '&') + serializedParams; } return url; }; function InterceptorManager() { this.handlers = []; } /** * Add a new interceptor to the stack * * @param {Function} fulfilled The function to handle `then` for a `Promise` * @param {Function} rejected The function to handle `reject` for a `Promise` * * @return {Number} An ID used to remove interceptor later */ InterceptorManager.prototype.use = function use(fulfilled, rejected) { this.handlers.push({ fulfilled: fulfilled, rejected: rejected }); return this.handlers.length - 1; }; /** * Remove an interceptor from the stack * * @param {Number} id The ID that was returned by `use` */ InterceptorManager.prototype.eject = function eject(id) { if (this.handlers[id]) { this.handlers[id] = null; } }; /** * Iterate over all the registered interceptors * * This method is particularly useful for skipping over any * interceptors that may have become `null` calling `eject`. * * @param {Function} fn The function to call for each interceptor */ InterceptorManager.prototype.forEach = function forEach(fn) { utils.forEach(this.handlers, function forEachHandler(h) { if (h !== null) { fn(h); } }); }; var InterceptorManager_1 = InterceptorManager; /** * Transform the data for a request or a response * * @param {Object|String} data The data to be transformed * @param {Array} headers The headers for the request or response * @param {Array|Function} fns A single function or Array of functions * @returns {*} The resulting transformed data */ var transformData = function transformData(data, headers, fns) { /*eslint no-param-reassign:0*/ utils.forEach(fns, function transform(fn) { data = fn(data, headers); }); return data; }; var isCancel = function isCancel(value) { return !!(value && value.__CANCEL__); }; var normalizeHeaderName = function normalizeHeaderName(headers, normalizedName) { utils.forEach(headers, function processHeader(value, name) { if (name !== normalizedName && name.toUpperCase() === normalizedName.toUpperCase()) { headers[normalizedName] = value; delete headers[name]; } }); }; /** * Update an Error with the specified config, error code, and response. * * @param {Error} error The error to update. * @param {Object} config The config. * @param {string} [code] The error code (for example, 'ECONNABORTED'). * @param {Object} [request] The request. * @param {Object} [response] The response. * @returns {Error} The error. */ var enhanceError = function enhanceError(error, config, code, request, response) { error.config = config; if (code) { error.code = code; } error.request = request; error.response = response; error.isAxiosError = true; error.toJSON = function toJSON() { return { // Standard message: this.message, name: this.name, // Microsoft description: this.description, number: this.number, // Mozilla fileName: this.fileName, lineNumber: this.lineNumber, columnNumber: this.columnNumber, stack: this.stack, // Axios config: this.config, code: this.code }; }; return error; }; /** * Create an Error with the specified message, config, error code, request and response. * * @param {string} message The error message. * @param {Object} config The config. * @param {string} [code] The error code (for example, 'ECONNABORTED'). * @param {Object} [request] The request. * @param {Object} [response] The response. * @returns {Error} The created error. */ var createError = function createError(message, config, code, request, response) { var error = new Error(message); return enhanceError(error, config, code, request, response); }; /** * Resolve or reject a Promise based on response status. * * @param {Function} resolve A function that resolves the promise. * @param {Function} reject A function that rejects the promise. * @param {object} response The response. */ var settle = function settle(resolve, reject, response) { var validateStatus = response.config.validateStatus; if (!response.status || !validateStatus || validateStatus(response.status)) { resolve(response); } else { reject(createError( 'Request failed with status code ' + response.status, response.config, null, response.request, response )); } }; var cookies = ( utils.isStandardBrowserEnv() ? // Standard browser envs support document.cookie (function standardBrowserEnv() { return { write: function write(name, value, expires, path, domain, secure) { var cookie = []; cookie.push(name + '=' + encodeURIComponent(value)); if (utils.isNumber(expires)) { cookie.push('expires=' + new Date(expires).toGMTString()); } if (utils.isString(path)) { cookie.push('path=' + path); } if (utils.isString(domain)) { cookie.push('domain=' + domain); } if (secure === true) { cookie.push('secure'); } document.cookie = cookie.join('; '); }, read: function read(name) { var match = document.cookie.match(new RegExp('(^|;\\s*)(' + name + ')=([^;]*)')); return (match ? decodeURIComponent(match[3]) : null); }, remove: function remove(name) { this.write(name, '', Date.now() - 86400000); } }; })() : // Non standard browser env (web workers, react-native) lack needed support. (function nonStandardBrowserEnv() { return { write: function write() {}, read: function read() { return null; }, remove: function remove() {} }; })() ); /** * Determines whether the specified URL is absolute * * @param {string} url The URL to test * @returns {boolean} True if the specified URL is absolute, otherwise false */ var isAbsoluteURL = function isAbsoluteURL(url) { // A URL is considered absolute if it begins with "://" or "//" (protocol-relative URL). // RFC 3986 defines scheme name as a sequence of characters beginning with a letter and followed // by any combination of letters, digits, plus, period, or hyphen. return /^([a-z][a-z\d\+\-\.]*:)?\/\//i.test(url); }; /** * Creates a new URL by combining the specified URLs * * @param {string} baseURL The base URL * @param {string} relativeURL The relative URL * @returns {string} The combined URL */ var combineURLs = function combineURLs(baseURL, relativeURL) { return relativeURL ? baseURL.replace(/\/+$/, '') + '/' + relativeURL.replace(/^\/+/, '') : baseURL; }; /** * Creates a new URL by combining the baseURL with the requestedURL, * only when the requestedURL is not already an absolute URL. * If the requestURL is absolute, this function returns the requestedURL untouched. * * @param {string} baseURL The base URL * @param {string} requestedURL Absolute or relative URL to combine * @returns {string} The combined full path */ var buildFullPath = function buildFullPath(baseURL, requestedURL) { if (baseURL && !isAbsoluteURL(requestedURL)) { return combineURLs(baseURL, requestedURL); } return requestedURL; }; // Headers whose duplicates are ignored by node // c.f. https://nodejs.org/api/http.html#http_message_headers var ignoreDuplicateOf = [ 'age', 'authorization', 'content-length', 'content-type', 'etag', 'expires', 'from', 'host', 'if-modified-since', 'if-unmodified-since', 'last-modified', 'location', 'max-forwards', 'proxy-authorization', 'referer', 'retry-after', 'user-agent' ]; /** * Parse headers into an object * * ``` * Date: Wed, 27 Aug 2014 08:58:49 GMT * Content-Type: application/json * Connection: keep-alive * Transfer-Encoding: chunked * ``` * * @param {String} headers Headers needing to be parsed * @returns {Object} Headers parsed into an object */ var parseHeaders = function parseHeaders(headers) { var parsed = {}; var key; var val; var i; if (!headers) { return parsed; } utils.forEach(headers.split('\n'), function parser(line) { i = line.indexOf(':'); key = utils.trim(line.substr(0, i)).toLowerCase(); val = utils.trim(line.substr(i + 1)); if (key) { if (parsed[key] && ignoreDuplicateOf.indexOf(key) >= 0) { return; } if (key === 'set-cookie') { parsed[key] = (parsed[key] ? parsed[key] : []).concat([val]); } else { parsed[key] = parsed[key] ? parsed[key] + ', ' + val : val; } } }); return parsed; }; var isURLSameOrigin = ( utils.isStandardBrowserEnv() ? // Standard browser envs have full support of the APIs needed to test // whether the request URL is of the same origin as current location. (function standardBrowserEnv() { var msie = /(msie|trident)/i.test(navigator.userAgent); var urlParsingNode = document.createElement('a'); var originURL; /** * Parse a URL to discover it's components * * @param {String} url The URL to be parsed * @returns {Object} */ function resolveURL(url) { var href = url; if (msie) { // IE needs attribute set twice to normalize properties urlParsingNode.setAttribute('href', href); href = urlParsingNode.href; } urlParsingNode.setAttribute('href', href); // urlParsingNode provides the UrlUtils interface - http://url.spec.whatwg.org/#urlutils return { href: urlParsingNode.href, protocol: urlParsingNode.protocol ? urlParsingNode.protocol.replace(/:$/, '') : '', host: urlParsingNode.host, search: urlParsingNode.search ? urlParsingNode.search.replace(/^\?/, '') : '', hash: urlParsingNode.hash ? urlParsingNode.hash.replace(/^#/, '') : '', hostname: urlParsingNode.hostname, port: urlParsingNode.port, pathname: (urlParsingNode.pathname.charAt(0) === '/') ? urlParsingNode.pathname : '/' + urlParsingNode.pathname }; } originURL = resolveURL(window.location.href); /** * Determine if a URL shares the same origin as the current location * * @param {String} requestURL The URL to test * @returns {boolean} True if URL shares the same origin, otherwise false */ return function isURLSameOrigin(requestURL) { var parsed = (utils.isString(requestURL)) ? resolveURL(requestURL) : requestURL; return (parsed.protocol === originURL.protocol && parsed.host === originURL.host); }; })() : // Non standard browser envs (web workers, react-native) lack needed support. (function nonStandardBrowserEnv() { return function isURLSameOrigin() { return true; }; })() ); var xhr = function xhrAdapter(config) { return new Promise(function dispatchXhrRequest(resolve, reject) { var requestData = config.data; var requestHeaders = config.headers; if (utils.isFormData(requestData)) { delete requestHeaders['Content-Type']; // Let the browser set it } var request = new XMLHttpRequest(); // HTTP basic authentication if (config.auth) { var username = config.auth.username || ''; var password = config.auth.password ? unescape(encodeURIComponent(config.auth.password)) : ''; requestHeaders.Authorization = 'Basic ' + btoa(username + ':' + password); } var fullPath = buildFullPath(config.baseURL, config.url); request.open(config.method.toUpperCase(), buildURL(fullPath, config.params, config.paramsSerializer), true); // Set the request timeout in MS request.timeout = config.timeout; // Listen for ready state request.onreadystatechange = function handleLoad() { if (!request || request.readyState !== 4) { return; } // The request errored out and we didn't get a response, this will be // handled by onerror instead // With one exception: request that using file: protocol, most browsers // will return status as 0 even though it's a successful request if (request.status === 0 && !(request.responseURL && request.responseURL.indexOf('file:') === 0)) { return; } // Prepare the response var responseHeaders = 'getAllResponseHeaders' in request ? parseHeaders(request.getAllResponseHeaders()) : null; var responseData = !config.responseType || config.responseType === 'text' ? request.responseText : request.response; var response = { data: responseData, status: request.status, statusText: request.statusText, headers: responseHeaders, config: config, request: request }; settle(resolve, reject, response); // Clean up request request = null; }; // Handle browser request cancellation (as opposed to a manual cancellation) request.onabort = function handleAbort() { if (!request) { return; } reject(createError('Request aborted', config, 'ECONNABORTED', request)); // Clean up request request = null; }; // Handle low level network errors request.onerror = function handleError() { // Real errors are hidden from us by the browser // onerror should only fire if it's a network error reject(createError('Network Error', config, null, request)); // Clean up request request = null; }; // Handle timeout request.ontimeout = function handleTimeout() { var timeoutErrorMessage = 'timeout of ' + config.timeout + 'ms exceeded'; if (config.timeoutErrorMessage) { timeoutErrorMessage = config.timeoutErrorMessage; } reject(createError(timeoutErrorMessage, config, 'ECONNABORTED', request)); // Clean up request request = null; }; // Add xsrf header // This is only done if running in a standard browser environment. // Specifically not if we're in a web worker, or react-native. if (utils.isStandardBrowserEnv()) { // Add xsrf header var xsrfValue = (config.withCredentials || isURLSameOrigin(fullPath)) && config.xsrfCookieName ? cookies.read(config.xsrfCookieName) : undefined; if (xsrfValue) { requestHeaders[config.xsrfHeaderName] = xsrfValue; } } // Add headers to the request if ('setRequestHeader' in request) { utils.forEach(requestHeaders, function setRequestHeader(val, key) { if (typeof requestData === 'undefined' && key.toLowerCase() === 'content-type') { // Remove Content-Type if data is undefined delete requestHeaders[key]; } else { // Otherwise add header to the request request.setRequestHeader(key, val); } }); } // Add withCredentials to request if needed if (!utils.isUndefined(config.withCredentials)) { request.withCredentials = !!config.withCredentials; } // Add responseType to request if needed if (config.responseType) { try { request.responseType = config.responseType; } catch (e) { // Expected DOMException thrown by browsers not compatible XMLHttpRequest Level 2. // But, this can be suppressed for 'json' type as it can be parsed by default 'transformResponse' function. if (config.responseType !== 'json') { throw e; } } } // Handle progress if needed if (typeof config.onDownloadProgress === 'function') { request.addEventListener('progress', config.onDownloadProgress); } // Not all browsers support upload events if (typeof config.onUploadProgress === 'function' && request.upload) { request.upload.addEventListener('progress', config.onUploadProgress); } if (config.cancelToken) { // Handle cancellation config.cancelToken.promise.then(function onCanceled(cancel) { if (!request) { return; } request.abort(); reject(cancel); // Clean up request request = null; }); } if (!requestData) { requestData = null; } // Send the request request.send(requestData); }); }; var DEFAULT_CONTENT_TYPE = { 'Content-Type': 'application/x-www-form-urlencoded' }; function setContentTypeIfUnset(headers, value) { if (!utils.isUndefined(headers) && utils.isUndefined(headers['Content-Type'])) { headers['Content-Type'] = value; } } function getDefaultAdapter() { var adapter; if (typeof XMLHttpRequest !== 'undefined') { // For browsers use XHR adapter adapter = xhr; } else if (typeof process !== 'undefined' && Object.prototype.toString.call(process) === '[object process]') { // For node use HTTP adapter adapter = xhr; } return adapter; } var defaults = { adapter: getDefaultAdapter(), transformRequest: [function transformRequest(data, headers) { normalizeHeaderName(headers, 'Accept'); normalizeHeaderName(headers, 'Content-Type'); if (utils.isFormData(data) || utils.isArrayBuffer(data) || utils.isBuffer(data) || utils.isStream(data) || utils.isFile(data) || utils.isBlob(data) ) { return data; } if (utils.isArrayBufferView(data)) { return data.buffer; } if (utils.isURLSearchParams(data)) { setContentTypeIfUnset(headers, 'application/x-www-form-urlencoded;charset=utf-8'); return data.toString(); } if (utils.isObject(data)) { setContentTypeIfUnset(headers, 'application/json;charset=utf-8'); return JSON.stringify(data); } return data; }], transformResponse: [function transformResponse(data) { /*eslint no-param-reassign:0*/ if (typeof data === 'string') { try { data = JSON.parse(data); } catch (e) { /* Ignore */ } } return data; }], /** * A timeout in milliseconds to abort a request. If set to 0 (default) a * timeout is not created. */ timeout: 0, xsrfCookieName: 'XSRF-TOKEN', xsrfHeaderName: 'X-XSRF-TOKEN', maxContentLength: -1, maxBodyLength: -1, validateStatus: function validateStatus(status) { return status >= 200 && status < 300; } }; defaults.headers = { common: { 'Accept': 'application/json, text/plain, */*' } }; utils.forEach(['delete', 'get', 'head'], function forEachMethodNoData(method) { defaults.headers[method] = {}; }); utils.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) { defaults.headers[method] = utils.merge(DEFAULT_CONTENT_TYPE); }); var defaults_1 = defaults; /** * Throws a `Cancel` if cancellation has been requested. */ function throwIfCancellationRequested(config) { if (config.cancelToken) { config.cancelToken.throwIfRequested(); } } /** * Dispatch a request to the server using the configured adapter. * * @param {object} config The config that is to be used for the request * @returns {Promise} The Promise to be fulfilled */ var dispatchRequest = function dispatchRequest(config) { throwIfCancellationRequested(config); // Ensure headers exist config.headers = config.headers || {}; // Transform request data config.data = transformData( config.data, config.headers, config.transformRequest ); // Flatten headers config.headers = utils.merge( config.headers.common || {}, config.headers[config.method] || {}, config.headers ); utils.forEach( ['delete', 'get', 'head', 'post', 'put', 'patch', 'common'], function cleanHeaderConfig(method) { delete config.headers[method]; } ); var adapter = config.adapter || defaults_1.adapter; return adapter(config).then(function onAdapterResolution(response) { throwIfCancellationRequested(config); // Transform response data response.data = transformData( response.data, response.headers, config.transformResponse ); return response; }, function onAdapterRejection(reason) { if (!isCancel(reason)) { throwIfCancellationRequested(config); // Transform response data if (reason && reason.response) { reason.response.data = transformData( reason.response.data, reason.response.headers, config.transformResponse ); } } return Promise.reject(reason); }); }; /** * Config-specific merge-function which creates a new config-object * by merging two configuration objects together. * * @param {Object} config1 * @param {Object} config2 * @returns {Object} New object resulting from merging config2 to config1 */ var mergeConfig = function mergeConfig(config1, config2) { // eslint-disable-next-line no-param-reassign config2 = config2 || {}; var config = {}; var valueFromConfig2Keys = ['url', 'method', 'data']; var mergeDeepPropertiesKeys = ['headers', 'auth', 'proxy', 'params']; var defaultToConfig2Keys = [ 'baseURL', 'transformRequest', 'transformResponse', 'paramsSerializer', 'timeout', 'timeoutMessage', 'withCredentials', 'adapter', 'responseType', 'xsrfCookieName', 'xsrfHeaderName', 'onUploadProgress', 'onDownloadProgress', 'decompress', 'maxContentLength', 'maxBodyLength', 'maxRedirects', 'transport', 'httpAgent', 'httpsAgent', 'cancelToken', 'socketPath', 'responseEncoding' ]; var directMergeKeys = ['validateStatus']; function getMergedValue(target, source) { if (utils.isPlainObject(target) && utils.isPlainObject(source)) { return utils.merge(target, source); } else if (utils.isPlainObject(source)) { return utils.merge({}, source); } else if (utils.isArray(source)) { return source.slice(); } return source; } function mergeDeepProperties(prop) { if (!utils.isUndefined(config2[prop])) { config[prop] = getMergedValue(config1[prop], config2[prop]); } else if (!utils.isUndefined(config1[prop])) { config[prop] = getMergedValue(undefined, config1[prop]); } } utils.forEach(valueFromConfig2Keys, function valueFromConfig2(prop) { if (!utils.isUndefined(config2[prop])) { config[prop] = getMergedValue(undefined, config2[prop]); } }); utils.forEach(mergeDeepPropertiesKeys, mergeDeepProperties); utils.forEach(defaultToConfig2Keys, function defaultToConfig2(prop) { if (!utils.isUndefined(config2[prop])) { config[prop] = getMergedValue(undefined, config2[prop]); } else if (!utils.isUndefined(config1[prop])) { config[prop] = getMergedValue(undefined, config1[prop]); } }); utils.forEach(directMergeKeys, function merge(prop) { if (prop in config2) { config[prop] = getMergedValue(config1[prop], config2[prop]); } else if (prop in config1) { config[prop] = getMergedValue(undefined, config1[prop]); } }); var axiosKeys = valueFromConfig2Keys .concat(mergeDeepPropertiesKeys) .concat(defaultToConfig2Keys) .concat(directMergeKeys); var otherKeys = Object .keys(config1) .concat(Object.keys(config2)) .filter(function filterAxiosKeys(key) { return axiosKeys.indexOf(key) === -1; }); utils.forEach(otherKeys, mergeDeepProperties); return config; }; /** * Create a new instance of Axios * * @param {Object} instanceConfig The default config for the instance */ function Axios(instanceConfig) { this.defaults = instanceConfig; this.interceptors = { request: new InterceptorManager_1(), response: new InterceptorManager_1() }; } /** * Dispatch a request * * @param {Object} config The config specific for this request (merged with this.defaults) */ Axios.prototype.request = function request(config) { /*eslint no-param-reassign:0*/ // Allow for axios('example/url'[, config]) a la fetch API if (typeof config === 'string') { config = arguments[1] || {}; config.url = arguments[0]; } else { config = config || {}; } config = mergeConfig(this.defaults, config); // Set config.method if (config.method) { config.method = config.method.toLowerCase(); } else if (this.defaults.method) { config.method = this.defaults.method.toLowerCase(); } else { config.method = 'get'; } // Hook up interceptors middleware var chain = [dispatchRequest, undefined]; var promise = Promise.resolve(config); this.interceptors.request.forEach(function unshiftRequestInterceptors(interceptor) { chain.unshift(interceptor.fulfilled, interceptor.rejected); }); this.interceptors.response.forEach(function pushResponseInterceptors(interceptor) { chain.push(interceptor.fulfilled, interceptor.rejected); }); while (chain.length) { promise = promise.then(chain.shift(), chain.shift()); } return promise; }; Axios.prototype.getUri = function getUri(config) { config = mergeConfig(this.defaults, config); return buildURL(config.url, config.params, config.paramsSerializer).replace(/^\?/, ''); }; // Provide aliases for supported request methods utils.forEach(['delete', 'get', 'head', 'options'], function forEachMethodNoData(method) { /*eslint func-names:0*/ Axios.prototype[method] = function(url, config) { return this.request(mergeConfig(config || {}, { method: method, url: url, data: (config || {}).data })); }; }); utils.forEach(['post', 'put', 'patch'], function forEachMethodWithData(method) { /*eslint func-names:0*/ Axios.prototype[method] = function(url, data, config) { return this.request(mergeConfig(config || {}, { method: method, url: url, data: data })); }; }); var Axios_1 = Axios; /** * A `Cancel` is an object that is thrown when an operation is canceled. * * @class * @param {string=} message The message. */ function Cancel(message) { this.message = message; } Cancel.prototype.toString = function toString() { return 'Cancel' + (this.message ? ': ' + this.message : ''); }; Cancel.prototype.__CANCEL__ = true; var Cancel_1 = Cancel; /** * A `CancelToken` is an object that can be used to request cancellation of an operation. * * @class * @param {Function} executor The executor function. */ function CancelToken(executor) { if (typeof executor !== 'function') { throw new TypeError('executor must be a function.'); } var resolvePromise; this.promise = new Promise(function promiseExecutor(resolve) { resolvePromise = resolve; }); var token = this; executor(function cancel(message) { if (token.reason) { // Cancellation has already been requested return; } token.reason = new Cancel_1(message); resolvePromise(token.reason); }); } /** * Throws a `Cancel` if cancellation has been requested. */ CancelToken.prototype.throwIfRequested = function throwIfRequested() { if (this.reason) { throw this.reason; } }; /** * Returns an object that contains a new `CancelToken` and a function that, when called, * cancels the `CancelToken`. */ CancelToken.source = function source() { var cancel; var token = new CancelToken(function executor(c) { cancel = c; }); return { token: token, cancel: cancel }; }; var CancelToken_1 = CancelToken; /** * Syntactic sugar for invoking a function and expanding an array for arguments. * * Common use case would be to use `Function.prototype.apply`. * * ```js * function f(x, y, z) {} * var args = [1, 2, 3]; * f.apply(null, args); * ``` * * With `spread` this example can be re-written. * * ```js * spread(function(x, y, z) {})([1, 2, 3]); * ``` * * @param {Function} callback * @returns {Function} */ var spread = function spread(callback) { return function wrap(arr) { return callback.apply(null, arr); }; }; /** * Determines whether the payload is an error thrown by Axios * * @param {*} payload The value to test * @returns {boolean} True if the payload is an error thrown by Axios, otherwise false */ var isAxiosError = function isAxiosError(payload) { return (typeof payload === 'object') && (payload.isAxiosError === true); }; /** * Create an instance of Axios * * @param {Object} defaultConfig The default config for the instance * @return {Axios} A new instance of Axios */ function createInstance(defaultConfig) { var context = new Axios_1(defaultConfig); var instance = bind(Axios_1.prototype.request, context); // Copy axios.prototype to instance utils.extend(instance, Axios_1.prototype, context); // Copy context to instance utils.extend(instance, context); return instance; } // Create the default instance to be exported var axios$1 = createInstance(defaults_1); // Expose Axios class to allow class inheritance axios$1.Axios = Axios_1; // Factory for creating new instances axios$1.create = function create(instanceConfig) { return createInstance(mergeConfig(axios$1.defaults, instanceConfig)); }; // Expose Cancel & CancelToken axios$1.Cancel = Cancel_1; axios$1.CancelToken = CancelToken_1; axios$1.isCancel = isCancel; // Expose all/spread axios$1.all = function all(promises) { return Promise.all(promises); }; axios$1.spread = spread; // Expose isAxiosError axios$1.isAxiosError = isAxiosError; var axios_1 = axios$1; // Allow use of default import syntax in TypeScript var _default = axios$1; axios_1.default = _default; var axios = axios_1; class RTCEndpoint extends Event$1 { constructor(options) { super('RTCPusherPlayer'); this.TAG = '[RTCPusherPlayer]'; let defaults = { element: '', // html video element debug: false, // if output debug log zlmsdpUrl: '', simulecast: false, useCamera: true, audioEnable: true, videoEnable: true, recvOnly: false }; this.options = Object.assign({}, defaults, options); if (this.options.debug) { setLogger(); } this.e = { onicecandidate: this._onIceCandidate.bind(this), ontrack: this._onTrack.bind(this), onicecandidateerror: this._onIceCandidateError.bind(this) }; this._remoteStream = null; this._localStream = null; this.pc = new RTCPeerConnection(null); this.pc.onicecandidate = this.e.onicecandidate; this.pc.onicecandidateerror = this.e.onicecandidateerror; this.pc.ontrack = this.e.ontrack; if (!this.options.recvOnly && (this.options.audioEnable || this.options.videoEnable)) this.start();else this.receive(); } receive() { const AudioTransceiverInit = { direction: 'recvonly', sendEncodings: [] }; const VideoTransceiverInit = { direction: 'recvonly', sendEncodings: [] }; this.pc.addTransceiver('audio', AudioTransceiverInit); this.pc.addTransceiver('video', VideoTransceiverInit); this.pc.createOffer().then(desc => { log(this.TAG, 'offer:', desc.sdp); this.pc.setLocalDescription(desc).then(() => { axios({ method: 'post', url: this.options.zlmsdpUrl, responseType: 'json', data: desc.sdp, headers: { 'Content-Type': 'text/plain;charset=utf-8' } }).then(response => { let ret = response.data; //JSON.parse(response.data); if (ret.code != 0) { // mean failed for offer/anwser exchange this.dispatch(Events$1.WEBRTC_OFFER_ANWSER_EXCHANGE_FAILED, ret); return; } let anwser = {}; anwser.sdp = ret.sdp; anwser.type = 'answer'; log(this.TAG, 'answer:', ret.sdp); this.pc.setRemoteDescription(anwser).then(() => { log(this.TAG, 'set remote success'); }).catch(e => { error(this.TAG, e); }); }); }); }).catch(e => { error(this.TAG, e); }); } start() { let videoConstraints = false; let audioConstraints = false; if (this.options.useCamera) { if (this.options.videoEnable) videoConstraints = new VideoTrackConstraints(VideoSourceInfo.CAMERA); if (this.options.audioEnable) audioConstraints = new AudioTrackConstraints(AudioSourceInfo.MIC); } else { if (this.options.videoEnable) { videoConstraints = new VideoTrackConstraints(VideoSourceInfo.SCREENCAST); if (this.options.audioEnable) audioConstraints = new AudioTrackConstraints(AudioSourceInfo.SCREENCAST); } else { if (this.options.audioEnable) audioConstraints = new AudioTrackConstraints(AudioSourceInfo.MIC);else { // error shared display media not only audio error(this.TAG, 'error paramter'); } } } MediaStreamFactory.createMediaStream(new StreamConstraints(audioConstraints, videoConstraints)).then(stream => { this._localStream = stream; this.dispatch(Events$1.WEBRTC_ON_LOCAL_STREAM, stream); const AudioTransceiverInit = { direction: 'sendrecv', sendEncodings: [] }; const VideoTransceiverInit = { direction: 'sendrecv', sendEncodings: [] }; if (this.options.simulecast && stream.getVideoTracks().length > 0) { VideoTransceiverInit.sendEncodings = [{ rid: 'q', active: true, scaleResolutionDownBy: 4.0 }, { rid: 'h', active: true, scaleResolutionDownBy: 2.0 }, { rid: 'f', active: true }]; } if (stream.getAudioTracks().length > 0) { this.pc.addTransceiver(stream.getAudioTracks()[0], AudioTransceiverInit); } else { AudioTransceiverInit.direction = 'recvonly'; this.pc.addTransceiver('audio', AudioTransceiverInit); } if (stream.getVideoTracks().length > 0) { this.pc.addTransceiver(stream.getVideoTracks()[0], VideoTransceiverInit); } else { VideoTransceiverInit.direction = 'recvonly'; this.pc.addTransceiver('video', VideoTransceiverInit); } /* stream.getTracks().forEach((track,idx)=>{ debug.log(this.TAG,track); this.pc.addTrack(track); }); */ this.pc.createOffer().then(desc => { log(this.TAG, 'offer:', desc.sdp); this.pc.setLocalDescription(desc).then(() => { axios({ method: 'post', url: this.options.zlmsdpUrl, responseType: 'json', data: desc.sdp, headers: { 'Content-Type': 'text/plain;charset=utf-8' } }).then(response => { let ret = response.data; //JSON.parse(response.data); if (ret.code != 0) { // mean failed for offer/anwser exchange this.dispatch(Events$1.WEBRTC_OFFER_ANWSER_EXCHANGE_FAILED, ret); return; } let anwser = {}; anwser.sdp = ret.sdp; anwser.type = 'answer'; log(this.TAG, 'answer:', ret.sdp); this.pc.setRemoteDescription(anwser).then(() => { log(this.TAG, 'set remote success'); }).catch(e => { error(this.TAG, e); }); }); }); }).catch(e => { error(this.TAG, e); }); }).catch(e => { error(this.TAG, e); }); //const offerOptions = {}; /* if (typeof this.pc.addTransceiver === 'function') { // |direction| seems not working on Safari. this.pc.addTransceiver('audio', { direction: 'recvonly' }); this.pc.addTransceiver('video', { direction: 'recvonly' }); } else { offerOptions.offerToReceiveAudio = true; offerOptions.offerToReceiveVideo = true; } */ } _onIceCandidate(event) { if (event.candidate) { log('Remote ICE candidate: \n ' + event.candidate.candidate); // Send the candidate to the remote peer } } _onTrack(event) { if (this.options.element && event.streams && event.streams.length > 0) { this.options.element.srcObject = event.streams[0]; this._remoteStream = event.streams[0]; this.dispatch(Events$1.WEBRTC_ON_REMOTE_STREAMS, event); } else { error('element pararm is failed'); } } _onIceCandidateError(event) { this.dispatch(Events$1.WEBRTC_ICE_CANDIDATE_ERROR, event); } close() { if (this.pc) { this.pc.close(); this.pc = null; } if (this.options) { this.options = null; } if (this._localStream) { this._localStream.getTracks().forEach((track, idx) => { track.stop(); }); } if (this._remoteStream) { this._remoteStream.getTracks().forEach((track, idx) => { track.stop(); }); } } get remoteStream() { return this._remoteStream; } get localStream() { return this._localStream; } } console.log('build date:', BUILD_DATE); console.log('version:', VERSION); const Events = Events$1; const Media = media; const Endpoint = RTCEndpoint; exports.Endpoint = Endpoint; exports.Events = Events; exports.Media = Media; Object.defineProperty(exports, '__esModule', { value: true }); return exports; }({})); //# sourceMappingURL=ZLMRTCClient.js.map