diff --git a/src/main/java/com/genersoft/iot/vmp/common/StreamInfo.java b/src/main/java/com/genersoft/iot/vmp/common/StreamInfo.java index 1c24eb9d..6def2942 100644 --- a/src/main/java/com/genersoft/iot/vmp/common/StreamInfo.java +++ b/src/main/java/com/genersoft/iot/vmp/common/StreamInfo.java @@ -18,6 +18,7 @@ public class StreamInfo { private String ws_ts; private String rtmp; private String rtsp; + private String rtc; private JSONArray tracks; public String getApp() { @@ -139,4 +140,12 @@ public class StreamInfo { public void setStreamId(String streamId) { this.streamId = streamId; } + + public String getRtc() { + return rtc; + } + + public void setRtc(String rtc) { + this.rtc = rtc; + } } diff --git a/src/main/java/com/genersoft/iot/vmp/media/zlm/ZLMHttpHookListener.java b/src/main/java/com/genersoft/iot/vmp/media/zlm/ZLMHttpHookListener.java index 0065b214..878e0169 100644 --- a/src/main/java/com/genersoft/iot/vmp/media/zlm/ZLMHttpHookListener.java +++ b/src/main/java/com/genersoft/iot/vmp/media/zlm/ZLMHttpHookListener.java @@ -4,6 +4,7 @@ import java.util.List; import java.util.UUID; import com.alibaba.fastjson.JSON; +import com.alibaba.fastjson.JSONArray; import com.genersoft.iot.vmp.common.StreamInfo; import com.genersoft.iot.vmp.conf.MediaServerConfig; import com.genersoft.iot.vmp.gb28181.bean.Device; @@ -239,26 +240,33 @@ public class ZLMHttpHookListener { String app = json.getString("app"); String streamId = json.getString("stream"); String schema = json.getString("schema"); - boolean regist = json.getBoolean("regist"); + JSONArray tracks = json.getJSONArray("tracks"); + String regist = json.getString("regist"); + if (tracks != null) { + System.out.println("222222" + schema); + } + if ("rtmp".equals(schema)){ - if ("rtp".equals(app) && !regist ) { - StreamInfo streamInfo = redisCatchStorage.queryPlayByStreamId(streamId); - if (streamInfo!=null){ - redisCatchStorage.stopPlay(streamInfo); - storager.stopPlay(streamInfo.getDeviceID(), streamInfo.getChannelId()); - }else{ - streamInfo = redisCatchStorage.queryPlaybackByStreamId(streamId); - redisCatchStorage.stopPlayback(streamInfo); - } - }else { - if (!"rtp".equals(app) && "rtmp".equals(schema)){ - if (regist) { - zlmMediaListManager.addMedia(app, streamId); - }else { - zlmMediaListManager.removeMedia(app, streamId); + if ("rtp".equals(app) && regist != null ) { + StreamInfo streamInfo = redisCatchStorage.queryPlayByStreamId(streamId); + if (streamInfo!=null){ + redisCatchStorage.stopPlay(streamInfo); + storager.stopPlay(streamInfo.getDeviceID(), streamInfo.getChannelId()); + }else{ + streamInfo = redisCatchStorage.queryPlaybackByStreamId(streamId); + redisCatchStorage.stopPlayback(streamInfo); + } + }else { + if (!"rtp".equals(app) ){ + if (regist == null) { + zlmMediaListManager.addMedia(app, streamId); + }else { + zlmMediaListManager.removeMedia(app, streamId); + } } } } + JSONObject ret = new JSONObject(); ret.put("code", 0); ret.put("msg", "success"); diff --git a/src/main/java/com/genersoft/iot/vmp/service/impl/MediaServiceImpl.java b/src/main/java/com/genersoft/iot/vmp/service/impl/MediaServiceImpl.java index f721b90d..3e0297a5 100644 --- a/src/main/java/com/genersoft/iot/vmp/service/impl/MediaServiceImpl.java +++ b/src/main/java/com/genersoft/iot/vmp/service/impl/MediaServiceImpl.java @@ -42,6 +42,8 @@ public class MediaServiceImpl implements IMediaService { streamInfoResult.setWs_fmp4(String.format("ws://%s:%s/%s/%s.live.mp4", mediaInfo.getWanIp(), mediaInfo.getHttpPort(), app, stream)); streamInfoResult.setTs(String.format("http://%s:%s/%s/%s.live.ts", mediaInfo.getWanIp(), mediaInfo.getHttpPort(), app, stream)); streamInfoResult.setWs_ts(String.format("ws://%s:%s/%s/%s.live.ts", mediaInfo.getWanIp(), mediaInfo.getHttpPort(), app, stream)); + streamInfoResult.setRtc(String.format("http://%s:%s/index/api/webrtc?app=%s&stream=%s&type=play", mediaInfo.getWanIp(), mediaInfo.getHttpPort(), app, stream)); + return streamInfoResult; } diff --git a/web_src/index.html b/web_src/index.html index 8b26e729..9cdf57e9 100644 --- a/web_src/index.html +++ b/web_src/index.html @@ -6,7 +6,8 @@ 国标28181 - + +
diff --git a/web_src/src/components/dialog/devicePlayer.vue b/web_src/src/components/dialog/devicePlayer.vue index 67800955..9edd5041 100644 --- a/web_src/src/components/dialog/devicePlayer.vue +++ b/web_src/src/components/dialog/devicePlayer.vue @@ -136,7 +136,7 @@ + + \ No newline at end of file diff --git a/web_src/static/js/ZLMRTCClient.js b/web_src/static/js/ZLMRTCClient.js new file mode 100644 index 00000000..a8fd2fa3 --- /dev/null +++ b/web_src/static/js/ZLMRTCClient.js @@ -0,0 +1,7546 @@ +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 sucess'); + }).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 sucess'); + }).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