msc-node
Version:
mediasoup client side Node.js library
516 lines (515 loc) • 24.2 kB
JavaScript
"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
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Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.Chrome55 = void 0;
const sdpTransform = __importStar(require("sdp-transform"));
const Logger_1 = require("../Logger");
const errors_1 = require("../errors");
const utils = __importStar(require("../utils"));
const ortc = __importStar(require("../ortc"));
const sdpCommonUtils = __importStar(require("./sdp/commonUtils"));
const sdpPlanBUtils = __importStar(require("./sdp/planBUtils"));
const HandlerInterface_1 = require("./HandlerInterface");
const RemoteSdp_1 = require("./sdp/RemoteSdp");
const logger = new Logger_1.Logger('Chrome55');
const SCTP_NUM_STREAMS = { OS: 1024, MIS: 1024 };
class Chrome55 extends HandlerInterface_1.HandlerInterface {
/**
* Creates a factory function.
*/
static createFactory() {
return () => new Chrome55();
}
constructor() {
super();
// Local stream for sending.
this._sendStream = new MediaStream();
// Map of sending MediaStreamTracks indexed by localId.
this._mapSendLocalIdTrack = new Map();
// Next sending localId.
this._nextSendLocalId = 0;
// Map of MID, RTP parameters and RTCRtpReceiver indexed by local id.
// Value is an Object with mid, rtpParameters and rtpReceiver.
this._mapRecvLocalIdInfo = new Map();
// Whether a DataChannel m=application section has been created.
this._hasDataChannelMediaSection = false;
// Sending DataChannel id value counter. Incremented for each new DataChannel.
this._nextSendSctpStreamId = 0;
// Got transport local and remote parameters.
this._transportReady = false;
}
get name() {
return 'Chrome55';
}
close() {
logger.debug('close()');
// Close RTCPeerConnection.
if (this._pc) {
try {
this._pc.close();
}
catch (error) { }
}
}
getNativeRtpCapabilities() {
return __awaiter(this, void 0, void 0, function* () {
logger.debug('getNativeRtpCapabilities()');
const pc = new RTCPeerConnection({
iceServers: [],
iceTransportPolicy: 'all',
bundlePolicy: 'max-bundle',
rtcpMuxPolicy: 'require',
sdpSemantics: 'plan-b'
});
try {
const offer = yield pc.createOffer({
offerToReceiveAudio: true,
offerToReceiveVideo: true
});
try {
pc.close();
}
catch (error) { }
const sdpObject = sdpTransform.parse(offer.sdp);
const nativeRtpCapabilities = sdpCommonUtils.extractRtpCapabilities({ sdpObject });
return nativeRtpCapabilities;
}
catch (error) {
try {
pc.close();
}
catch (error2) { }
throw error;
}
});
}
getNativeSctpCapabilities() {
return __awaiter(this, void 0, void 0, function* () {
logger.debug('getNativeSctpCapabilities()');
return {
numStreams: SCTP_NUM_STREAMS
};
});
}
run({ direction, iceParameters, iceCandidates, dtlsParameters, sctpParameters, iceServers, iceTransportPolicy, additionalSettings, proprietaryConstraints, extendedRtpCapabilities }) {
logger.debug('run()');
this._direction = direction;
this._remoteSdp = new RemoteSdp_1.RemoteSdp({
iceParameters,
iceCandidates,
dtlsParameters,
sctpParameters,
planB: true
});
this._sendingRtpParametersByKind =
{
audio: ortc.getSendingRtpParameters('audio', extendedRtpCapabilities),
video: ortc.getSendingRtpParameters('video', extendedRtpCapabilities)
};
this._sendingRemoteRtpParametersByKind =
{
audio: ortc.getSendingRemoteRtpParameters('audio', extendedRtpCapabilities),
video: ortc.getSendingRemoteRtpParameters('video', extendedRtpCapabilities)
};
this._pc = new RTCPeerConnection(Object.assign({ iceServers: iceServers || [], iceTransportPolicy: iceTransportPolicy || 'all', bundlePolicy: 'max-bundle', rtcpMuxPolicy: 'require', sdpSemantics: 'plan-b' }, additionalSettings), proprietaryConstraints);
// Handle RTCPeerConnection connection status.
this._pc.addEventListener('iceconnectionstatechange', () => {
switch (this._pc.iceConnectionState) {
case 'checking':
this.emit('@connectionstatechange', 'connecting');
break;
case 'connected':
case 'completed':
this.emit('@connectionstatechange', 'connected');
break;
case 'failed':
this.emit('@connectionstatechange', 'failed');
break;
case 'disconnected':
this.emit('@connectionstatechange', 'disconnected');
break;
case 'closed':
this.emit('@connectionstatechange', 'closed');
break;
}
});
}
updateIceServers(iceServers) {
return __awaiter(this, void 0, void 0, function* () {
logger.debug('updateIceServers()');
const configuration = this._pc.getConfiguration();
configuration.iceServers = iceServers;
this._pc.setConfiguration(configuration);
});
}
restartIce(iceParameters) {
return __awaiter(this, void 0, void 0, function* () {
logger.debug('restartIce()');
// Provide the remote SDP handler with new remote ICE parameters.
this._remoteSdp.updateIceParameters(iceParameters);
if (!this._transportReady) {
return;
}
if (this._direction === 'send') {
const offer = yield this._pc.createOffer({ iceRestart: true });
logger.debug('restartIce() | calling pc.setLocalDescription() [offer:%o]', offer);
yield this._pc.setLocalDescription(offer);
const answer = { type: 'answer', sdp: this._remoteSdp.getSdp() };
logger.debug('restartIce() | calling pc.setRemoteDescription() [answer:%o]', answer);
yield this._pc.setRemoteDescription(answer);
}
else {
const offer = { type: 'offer', sdp: this._remoteSdp.getSdp() };
logger.debug('restartIce() | calling pc.setRemoteDescription() [offer:%o]', offer);
yield this._pc.setRemoteDescription(offer);
const answer = yield this._pc.createAnswer();
logger.debug('restartIce() | calling pc.setLocalDescription() [answer:%o]', answer);
yield this._pc.setLocalDescription(answer);
}
});
}
getTransportStats() {
return __awaiter(this, void 0, void 0, function* () {
return this._pc.getStats();
});
}
send({ track, encodings, codecOptions, codec }) {
return __awaiter(this, void 0, void 0, function* () {
this._assertSendDirection();
logger.debug('send() [kind:%s, track.id:%s]', track.kind, track.id);
if (codec) {
logger.warn('send() | codec selection is not available in %s handler', this.name);
}
this._sendStream.addTrack(track);
this._pc.addStream(this._sendStream);
let offer = yield this._pc.createOffer();
let localSdpObject = sdpTransform.parse(offer.sdp);
let offerMediaObject;
const sendingRtpParameters = utils.clone(this._sendingRtpParametersByKind[track.kind], {});
sendingRtpParameters.codecs =
ortc.reduceCodecs(sendingRtpParameters.codecs);
const sendingRemoteRtpParameters = utils.clone(this._sendingRemoteRtpParametersByKind[track.kind], {});
sendingRemoteRtpParameters.codecs =
ortc.reduceCodecs(sendingRemoteRtpParameters.codecs);
if (!this._transportReady) {
yield this._setupTransport({ localDtlsRole: 'server', localSdpObject });
}
if (track.kind === 'video' && encodings && encodings.length > 1) {
logger.debug('send() | enabling simulcast');
localSdpObject = sdpTransform.parse(offer.sdp);
offerMediaObject = localSdpObject.media.find((m) => m.type === 'video');
sdpPlanBUtils.addLegacySimulcast({
offerMediaObject,
track,
numStreams: encodings.length
});
offer = { type: 'offer', sdp: sdpTransform.write(localSdpObject) };
}
logger.debug('send() | calling pc.setLocalDescription() [offer:%o]', offer);
yield this._pc.setLocalDescription(offer);
localSdpObject = sdpTransform.parse(this._pc.localDescription.sdp);
offerMediaObject = localSdpObject.media
.find((m) => m.type === track.kind);
// Set RTCP CNAME.
sendingRtpParameters.rtcp.cname =
sdpCommonUtils.getCname({ offerMediaObject });
// Set RTP encodings.
sendingRtpParameters.encodings =
sdpPlanBUtils.getRtpEncodings({ offerMediaObject, track });
// Complete encodings with given values.
if (encodings) {
for (let idx = 0; idx < sendingRtpParameters.encodings.length; ++idx) {
if (encodings[idx]) {
Object.assign(sendingRtpParameters.encodings[idx], encodings[idx]);
}
}
}
// If VP8 and there is effective simulcast, add scalabilityMode to each
// encoding.
if (sendingRtpParameters.encodings.length > 1 &&
sendingRtpParameters.codecs[0].mimeType.toLowerCase() === 'video/vp8') {
for (const encoding of sendingRtpParameters.encodings) {
encoding.scalabilityMode = 'S1T3';
}
}
this._remoteSdp.send({
offerMediaObject,
offerRtpParameters: sendingRtpParameters,
answerRtpParameters: sendingRemoteRtpParameters,
codecOptions
});
const answer = { type: 'answer', sdp: this._remoteSdp.getSdp() };
logger.debug('send() | calling pc.setRemoteDescription() [answer:%o]', answer);
yield this._pc.setRemoteDescription(answer);
const localId = String(this._nextSendLocalId);
this._nextSendLocalId++;
// Insert into the map.
this._mapSendLocalIdTrack.set(localId, track);
return {
localId: localId,
rtpParameters: sendingRtpParameters
};
});
}
stopSending(localId) {
return __awaiter(this, void 0, void 0, function* () {
this._assertSendDirection();
logger.debug('stopSending() [localId:%s]', localId);
const track = this._mapSendLocalIdTrack.get(localId);
if (!track) {
throw new Error('track not found');
}
this._mapSendLocalIdTrack.delete(localId);
this._sendStream.removeTrack(track);
this._pc.addStream(this._sendStream);
const offer = yield this._pc.createOffer();
logger.debug('stopSending() | calling pc.setLocalDescription() [offer:%o]', offer);
try {
yield this._pc.setLocalDescription(offer);
}
catch (error) {
// NOTE: If there are no sending tracks, setLocalDescription() will fail with
// "Failed to create channels". If so, ignore it.
if (this._sendStream.getTracks().length === 0) {
logger.warn('stopSending() | ignoring expected error due no sending tracks: %s', error.toString());
return;
}
throw error;
}
if (this._pc.signalingState === 'stable') {
return;
}
const answer = { type: 'answer', sdp: this._remoteSdp.getSdp() };
logger.debug('stopSending() | calling pc.setRemoteDescription() [answer:%o]', answer);
yield this._pc.setRemoteDescription(answer);
});
}
replaceTrack(
// eslint-disable-next-line @typescript-eslint/no-unused-vars
localId, track) {
return __awaiter(this, void 0, void 0, function* () {
throw new errors_1.UnsupportedError('not implemented');
});
}
// eslint-disable-next-line @typescript-eslint/no-unused-vars
setMaxSpatialLayer(localId, spatialLayer) {
return __awaiter(this, void 0, void 0, function* () {
throw new errors_1.UnsupportedError(' not implemented');
});
}
// eslint-disable-next-line @typescript-eslint/no-unused-vars
setRtpEncodingParameters(localId, params) {
return __awaiter(this, void 0, void 0, function* () {
throw new errors_1.UnsupportedError('not supported');
});
}
// eslint-disable-next-line @typescript-eslint/no-unused-vars
getSenderStats(localId) {
return __awaiter(this, void 0, void 0, function* () {
throw new errors_1.UnsupportedError('not implemented');
});
}
sendDataChannel({ ordered, maxPacketLifeTime, maxRetransmits, label, protocol, priority }) {
return __awaiter(this, void 0, void 0, function* () {
this._assertSendDirection();
const options = {
negotiated: true,
id: this._nextSendSctpStreamId,
ordered,
maxPacketLifeTime,
maxRetransmitTime: maxPacketLifeTime,
maxRetransmits,
protocol,
priority
};
logger.debug('sendDataChannel() [options:%o]', options);
const dataChannel = this._pc.createDataChannel(label, options);
// Increase next id.
this._nextSendSctpStreamId =
++this._nextSendSctpStreamId % SCTP_NUM_STREAMS.MIS;
// If this is the first DataChannel we need to create the SDP answer with
// m=application section.
if (!this._hasDataChannelMediaSection) {
const offer = yield this._pc.createOffer();
const localSdpObject = sdpTransform.parse(offer.sdp);
const offerMediaObject = localSdpObject.media
.find((m) => m.type === 'application');
if (!this._transportReady) {
yield this._setupTransport({ localDtlsRole: 'server', localSdpObject });
}
logger.debug('sendDataChannel() | calling pc.setLocalDescription() [offer:%o]', offer);
yield this._pc.setLocalDescription(offer);
this._remoteSdp.sendSctpAssociation({ offerMediaObject });
const answer = { type: 'answer', sdp: this._remoteSdp.getSdp() };
logger.debug('sendDataChannel() | calling pc.setRemoteDescription() [answer:%o]', answer);
yield this._pc.setRemoteDescription(answer);
this._hasDataChannelMediaSection = true;
}
const sctpStreamParameters = {
streamId: options.id,
ordered: options.ordered,
maxPacketLifeTime: options.maxPacketLifeTime,
maxRetransmits: options.maxRetransmits
};
return { dataChannel, sctpStreamParameters };
});
}
receive({ trackId, kind, rtpParameters }) {
return __awaiter(this, void 0, void 0, function* () {
this._assertRecvDirection();
logger.debug('receive() [trackId:%s, kind:%s]', trackId, kind);
const localId = trackId;
const mid = kind;
const streamId = rtpParameters.rtcp.cname;
this._remoteSdp.receive({
mid,
kind,
offerRtpParameters: rtpParameters,
streamId,
trackId
});
const offer = { type: 'offer', sdp: this._remoteSdp.getSdp() };
logger.debug('receive() | calling pc.setRemoteDescription() [offer:%o]', offer);
yield this._pc.setRemoteDescription(offer);
let answer = yield this._pc.createAnswer();
const localSdpObject = sdpTransform.parse(answer.sdp);
const answerMediaObject = localSdpObject.media
.find((m) => String(m.mid) === mid);
// May need to modify codec parameters in the answer based on codec
// parameters in the offer.
sdpCommonUtils.applyCodecParameters({
offerRtpParameters: rtpParameters,
answerMediaObject
});
answer = { type: 'answer', sdp: sdpTransform.write(localSdpObject) };
if (!this._transportReady) {
yield this._setupTransport({ localDtlsRole: 'client', localSdpObject });
}
logger.debug('receive() | calling pc.setLocalDescription() [answer:%o]', answer);
yield this._pc.setLocalDescription(answer);
const stream = this._pc.getRemoteStreams()
.find((s) => s.id === streamId);
const track = stream.getTrackById(localId);
if (!track) {
throw new Error('remote track not found');
}
// Insert into the map.
this._mapRecvLocalIdInfo.set(localId, { mid, rtpParameters });
return { localId, track };
});
}
stopReceiving(localId) {
return __awaiter(this, void 0, void 0, function* () {
this._assertRecvDirection();
logger.debug('stopReceiving() [localId:%s]', localId);
const { mid, rtpParameters } = this._mapRecvLocalIdInfo.get(localId) || {};
// Remove from the map.
this._mapRecvLocalIdInfo.delete(localId);
this._remoteSdp.planBStopReceiving({ mid: mid, offerRtpParameters: rtpParameters });
const offer = { type: 'offer', sdp: this._remoteSdp.getSdp() };
logger.debug('stopReceiving() | calling pc.setRemoteDescription() [offer:%o]', offer);
yield this._pc.setRemoteDescription(offer);
const answer = yield this._pc.createAnswer();
logger.debug('stopReceiving() | calling pc.setLocalDescription() [answer:%o]', answer);
yield this._pc.setLocalDescription(answer);
});
}
// eslint-disable-next-line @typescript-eslint/no-unused-vars
getReceiverStats(localId) {
return __awaiter(this, void 0, void 0, function* () {
throw new errors_1.UnsupportedError('not implemented');
});
}
receiveDataChannel({ sctpStreamParameters, label, protocol }) {
return __awaiter(this, void 0, void 0, function* () {
this._assertRecvDirection();
const { streamId, ordered, maxPacketLifeTime, maxRetransmits } = sctpStreamParameters;
const options = {
negotiated: true,
id: streamId,
ordered,
maxPacketLifeTime,
maxRetransmitTime: maxPacketLifeTime,
maxRetransmits,
protocol
};
logger.debug('receiveDataChannel() [options:%o]', options);
const dataChannel = this._pc.createDataChannel(label, options);
// If this is the first DataChannel we need to create the SDP offer with
// m=application section.
if (!this._hasDataChannelMediaSection) {
this._remoteSdp.receiveSctpAssociation({ oldDataChannelSpec: true });
const offer = { type: 'offer', sdp: this._remoteSdp.getSdp() };
logger.debug('receiveDataChannel() | calling pc.setRemoteDescription() [offer:%o]', offer);
yield this._pc.setRemoteDescription(offer);
const answer = yield this._pc.createAnswer();
if (!this._transportReady) {
const localSdpObject = sdpTransform.parse(answer.sdp);
yield this._setupTransport({ localDtlsRole: 'client', localSdpObject });
}
logger.debug('receiveDataChannel() | calling pc.setRemoteDescription() [answer:%o]', answer);
yield this._pc.setLocalDescription(answer);
this._hasDataChannelMediaSection = true;
}
return { dataChannel };
});
}
_setupTransport({ localDtlsRole, localSdpObject }) {
return __awaiter(this, void 0, void 0, function* () {
if (!localSdpObject) {
localSdpObject = sdpTransform.parse(this._pc.localDescription.sdp);
}
// Get our local DTLS parameters.
const dtlsParameters = sdpCommonUtils.extractDtlsParameters({ sdpObject: localSdpObject });
// Set our DTLS role.
dtlsParameters.role = localDtlsRole;
// Update the remote DTLS role in the SDP.
this._remoteSdp.updateDtlsRole(localDtlsRole === 'client' ? 'server' : 'client');
// Need to tell the remote transport about our parameters.
yield this.safeEmitAsPromise('@connect', { dtlsParameters });
this._transportReady = true;
});
}
_assertSendDirection() {
if (this._direction !== 'send') {
throw new Error('method can just be called for handlers with "send" direction');
}
}
_assertRecvDirection() {
if (this._direction !== 'recv') {
throw new Error('method can just be called for handlers with "recv" direction');
}
}
}
exports.Chrome55 = Chrome55;