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ZLMediaKit/www/webrtc/ZLMRTCClient.js
xgj e2cc9ecd92 update zlm rtc sdk demo
2021-09-17 11:20:23 +08:00

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var ZLMRTCClient = (function (exports) {
'use strict';
const Events$1 = {
WEBRTC_NOT_SUPPORT: 'WEBRTC_NOT_SUPPORT',
WEBRTC_ICE_CANDIDATE_ERROR: 'WEBRTC_ICE_CANDIDATE_ERROR',
WEBRTC_OFFER_ANWSER_EXCHANGE_FAILED: 'WEBRTC_OFFER_ANWSER_EXCHANGE_FAILED',
WEBRTC_ON_REMOTE_STREAMS: 'WEBRTC_ON_REMOTE_STREAMS',
WEBRTC_ON_LOCAL_STREAM: 'WEBRTC_ON_LOCAL_STREAM',
CAPTURE_STREAM_FAILED: 'CAPTURE_STREAM_FAILED'
};
const VERSION = '1.0.1';
const BUILD_DATE = 'Fri Sep 17 2021 10:41:58 GMT+0800 (China Standard Time)';
// Copyright (C) <2018> Intel Corporation
//
// SPDX-License-Identifier: Apache-2.0
// eslint-disable-next-line require-jsdoc
function isFirefox() {
return window.navigator.userAgent.match('Firefox') !== null;
} // eslint-disable-next-line require-jsdoc
function isChrome() {
return window.navigator.userAgent.match('Chrome') !== null;
} // eslint-disable-next-line require-jsdoc
function isEdge() {
return window.navigator.userAgent.match(/Edge\/(\d+).(\d+)$/) !== 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:<pt> is considered.
codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};
codec.rtcpFeedback = SDPUtils.matchPrefix(
mediaSection, 'a=rtcp-fb:' + pt + ' ')
.map(SDPUtils.parseRtcpFb);
description.codecs.push(codec);
// parse FEC mechanisms from rtpmap lines.
switch (codec.name.toUpperCase()) {
case 'RED':
case 'ULPFEC':
description.fecMechanisms.push(codec.name.toUpperCase());
break;
}
}
}
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<MediaStream, Error>} 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 "<scheme>://" 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: '',
simulcast: false,
useCamera: true,
audioEnable: true,
videoEnable: true,
recvOnly: false,
resolution: {
w: 0,
h: 0
}
};
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');
}
}
}
if (this.options.resolution.w != 0 && this.options.resolution.h != 0 && typeof videoConstraints == 'object') {
videoConstraints.resolution = new Resolution(this.options.resolution.w, this.options.resolution.h);
}
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.simulcast && stream.getVideoTracks().length > 0) {
VideoTransceiverInit.sendEncodings = [{
rid: 'h',
active: true,
maxBitrate: 1000000
}, {
rid: 'm',
active: true,
maxBitrate: 500000,
scaleResolutionDownBy: 2
}, {
rid: 'l',
active: true,
maxBitrate: 200000,
scaleResolutionDownBy: 4
}];
}
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 => {
this.dispatch(Events$1.CAPTURE_STREAM_FAILED); //debug.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;
}
}
const quickScan = [{
'label': '4K(UHD)',
'width': 3840,
'height': 2160
}, {
'label': '1080p(FHD)',
'width': 1920,
'height': 1080
}, {
'label': 'UXGA',
'width': 1600,
'height': 1200,
'ratio': '4:3'
}, {
'label': '720p(HD)',
'width': 1280,
'height': 720
}, {
'label': 'SVGA',
'width': 800,
'height': 600
}, {
'label': 'VGA',
'width': 640,
'height': 480
}, {
'label': '360p(nHD)',
'width': 640,
'height': 360
}, {
'label': 'CIF',
'width': 352,
'height': 288
}, {
'label': 'QVGA',
'width': 320,
'height': 240
}, {
'label': 'QCIF',
'width': 176,
'height': 144
}, {
'label': 'QQVGA',
'width': 160,
'height': 120
}];
function GetSupportCameraResolutions$1() {
return new Promise(function (resolve, reject) {
let resolutions = [];
let ok = 0;
let err = 0;
for (let i = 0; i < quickScan.length; ++i) {
let videoConstraints = new VideoTrackConstraints(VideoSourceInfo.CAMERA);
videoConstraints.resolution = new Resolution(quickScan[i].width, quickScan[i].height);
MediaStreamFactory.createMediaStream(new StreamConstraints(false, videoConstraints)).then(stream => {
resolutions.push(quickScan[i]);
ok++;
if (ok + err == quickScan.length) {
resolve(resolutions);
}
}).catch(e => {
err++;
if (ok + err == quickScan.length) {
resolve(resolutions);
}
});
}
});
}
function GetAllScanResolution$1() {
return quickScan;
}
function isSupportResolution$1(w, h) {
return new Promise(function (resolve, reject) {
let videoConstraints = new VideoTrackConstraints(VideoSourceInfo.CAMERA);
videoConstraints.resolution = new Resolution(w, h);
MediaStreamFactory.createMediaStream(new StreamConstraints(false, videoConstraints)).then(stream => {
resolve();
}).catch(e => {
reject(e);
});
});
}
console.log('build date:', BUILD_DATE);
console.log('version:', VERSION);
const Events = Events$1;
const Media = media;
const Endpoint = RTCEndpoint;
const GetSupportCameraResolutions = GetSupportCameraResolutions$1;
const GetAllScanResolution = GetAllScanResolution$1;
const isSupportResolution = isSupportResolution$1;
exports.Endpoint = Endpoint;
exports.Events = Events;
exports.GetAllScanResolution = GetAllScanResolution;
exports.GetSupportCameraResolutions = GetSupportCameraResolutions;
exports.Media = Media;
exports.isSupportResolution = isSupportResolution;
Object.defineProperty(exports, '__esModule', { value: true });
return exports;
}({}));
//# sourceMappingURL=ZLMRTCClient.js.map
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