jiti-meet/modules/xmpp/JingleSession.js

1393 lines
53 KiB
JavaScript

/* jshint -W117 */
var TraceablePeerConnection = require("./TraceablePeerConnection");
var SDPDiffer = require("./SDPDiffer");
var SDPUtil = require("./SDPUtil");
var SDP = require("./SDP");
var RTCBrowserType = require("../../service/RTC/RTCBrowserType");
var async = require("async");
var transform = require("sdp-transform");
// Jingle stuff
function JingleSession(me, sid, connection, service) {
this.me = me;
this.sid = sid;
this.connection = connection;
this.initiator = null;
this.responder = null;
this.isInitiator = null;
this.peerjid = null;
this.state = null;
this.localSDP = null;
this.remoteSDP = null;
this.relayedStreams = [];
this.startTime = null;
this.stopTime = null;
this.media_constraints = null;
this.pc_constraints = null;
this.ice_config = {};
this.drip_container = [];
this.service = service;
this.usetrickle = true;
this.usepranswer = false; // early transport warmup -- mind you, this might fail. depends on webrtc issue 1718
this.usedrip = false; // dripping is sending trickle candidates not one-by-one
this.hadstuncandidate = false;
this.hadturncandidate = false;
this.lasticecandidate = false;
this.statsinterval = null;
this.reason = null;
this.addssrc = [];
this.removessrc = [];
this.pendingop = null;
this.switchstreams = false;
this.wait = true;
this.localStreamsSSRC = null;
/**
* The indicator which determines whether the (local) video has been muted
* in response to a user command in contrast to an automatic decision made
* by the application logic.
*/
this.videoMuteByUser = false;
this.modifySourcesQueue = async.queue(this._modifySources.bind(this), 1);
// We start with the queue paused. We resume it when the signaling state is
// stable and the ice connection state is connected.
this.modifySourcesQueue.pause();
}
JingleSession.prototype.updateModifySourcesQueue = function() {
var signalingState = this.peerconnection.signalingState;
var iceConnectionState = this.peerconnection.iceConnectionState;
if (signalingState === 'stable' && iceConnectionState === 'connected') {
this.modifySourcesQueue.resume();
} else {
this.modifySourcesQueue.pause();
}
};
JingleSession.prototype.initiate = function (peerjid, isInitiator) {
var self = this;
if (this.state !== null) {
console.error('attempt to initiate on session ' + this.sid +
'in state ' + this.state);
return;
}
this.isInitiator = isInitiator;
this.state = 'pending';
this.initiator = isInitiator ? this.me : peerjid;
this.responder = !isInitiator ? this.me : peerjid;
this.peerjid = peerjid;
this.hadstuncandidate = false;
this.hadturncandidate = false;
this.lasticecandidate = false;
this.peerconnection
= new TraceablePeerConnection(
this.connection.jingle.ice_config,
this.connection.jingle.pc_constraints );
this.peerconnection.onicecandidate = function (event) {
self.sendIceCandidate(event.candidate);
};
this.peerconnection.onaddstream = function (event) {
if (event.stream.id !== 'default') {
console.log("REMOTE STREAM ADDED: " + event.stream + " - " + event.stream.id);
self.remoteStreamAdded(event);
} else {
// This is a recvonly stream. Clients that implement Unified Plan,
// such as Firefox use recvonly "streams/channels/tracks" for
// receiving remote stream/tracks, as opposed to Plan B where there
// are only 3 channels: audio, video and data.
console.log("RECVONLY REMOTE STREAM IGNORED: " + event.stream + " - " + event.stream.id);
}
};
this.peerconnection.onremovestream = function (event) {
// Remove the stream from remoteStreams
// FIXME: remotestreamremoved.jingle not defined anywhere(unused)
$(document).trigger('remotestreamremoved.jingle', [event, self.sid]);
};
this.peerconnection.onsignalingstatechange = function (event) {
if (!(self && self.peerconnection)) return;
self.updateModifySourcesQueue();
};
this.peerconnection.oniceconnectionstatechange = function (event) {
if (!(self && self.peerconnection)) return;
self.updateModifySourcesQueue();
switch (self.peerconnection.iceConnectionState) {
case 'connected':
this.startTime = new Date();
break;
case 'disconnected':
this.stopTime = new Date();
break;
}
onIceConnectionStateChange(self.sid, self);
};
// add any local and relayed stream
APP.RTC.localStreams.forEach(function(stream) {
self.peerconnection.addStream(stream.getOriginalStream());
});
this.relayedStreams.forEach(function(stream) {
self.peerconnection.addStream(stream);
});
};
function onIceConnectionStateChange(sid, session) {
switch (session.peerconnection.iceConnectionState) {
case 'checking':
session.timeChecking = (new Date()).getTime();
session.firstconnect = true;
break;
case 'completed': // on caller side
case 'connected':
if (session.firstconnect) {
session.firstconnect = false;
var metadata = {};
metadata.setupTime
= (new Date()).getTime() - session.timeChecking;
session.peerconnection.getStats(function (res) {
if(res && res.result) {
res.result().forEach(function (report) {
if (report.type == 'googCandidatePair' &&
report.stat('googActiveConnection') == 'true') {
metadata.localCandidateType
= report.stat('googLocalCandidateType');
metadata.remoteCandidateType
= report.stat('googRemoteCandidateType');
// log pair as well so we can get nice pie
// charts
metadata.candidatePair
= report.stat('googLocalCandidateType') +
';' +
report.stat('googRemoteCandidateType');
if (report.stat('googRemoteAddress').indexOf('[') === 0)
{
metadata.ipv6 = true;
}
}
});
}
});
}
break;
}
}
JingleSession.prototype.accept = function () {
var self = this;
this.state = 'active';
var pranswer = this.peerconnection.localDescription;
if (!pranswer || pranswer.type != 'pranswer') {
return;
}
console.log('going from pranswer to answer');
if (this.usetrickle) {
// remove candidates already sent from session-accept
var lines = SDPUtil.find_lines(pranswer.sdp, 'a=candidate:');
for (var i = 0; i < lines.length; i++) {
pranswer.sdp = pranswer.sdp.replace(lines[i] + '\r\n', '');
}
}
while (SDPUtil.find_line(pranswer.sdp, 'a=inactive')) {
// FIXME: change any inactive to sendrecv or whatever they were originally
pranswer.sdp = pranswer.sdp.replace('a=inactive', 'a=sendrecv');
}
var prsdp = new SDP(pranswer.sdp);
var accept = $iq({to: this.peerjid,
type: 'set'})
.c('jingle', {xmlns: 'urn:xmpp:jingle:1',
action: 'session-accept',
initiator: this.initiator,
responder: this.responder,
sid: this.sid });
prsdp.toJingle(accept, this.initiator == this.me ? 'initiator' : 'responder', this.localStreamsSSRC);
var sdp = this.peerconnection.localDescription.sdp;
while (SDPUtil.find_line(sdp, 'a=inactive')) {
// FIXME: change any inactive to sendrecv or whatever they were originally
sdp = sdp.replace('a=inactive', 'a=sendrecv');
}
var self = this;
this.peerconnection.setLocalDescription(new RTCSessionDescription({type: 'answer', sdp: sdp}),
function () {
//console.log('setLocalDescription success');
self.setLocalDescription();
self.connection.sendIQ(accept,
function () {
var ack = {};
ack.source = 'answer';
$(document).trigger('ack.jingle', [self.sid, ack]);
},
function (stanza) {
var error = ($(stanza).find('error').length) ? {
code: $(stanza).find('error').attr('code'),
reason: $(stanza).find('error :first')[0].tagName
}:{};
error.source = 'answer';
JingleSession.onJingleError(self.sid, error);
},
10000);
},
function (e) {
console.error('setLocalDescription failed', e);
}
);
};
JingleSession.prototype.terminate = function (reason) {
this.state = 'ended';
this.reason = reason;
this.peerconnection.close();
if (this.statsinterval !== null) {
window.clearInterval(this.statsinterval);
this.statsinterval = null;
}
};
JingleSession.prototype.active = function () {
return this.state == 'active';
};
JingleSession.prototype.sendIceCandidate = function (candidate) {
var self = this;
if (candidate && !this.lasticecandidate) {
var ice = SDPUtil.iceparams(this.localSDP.media[candidate.sdpMLineIndex], this.localSDP.session);
var jcand = SDPUtil.candidateToJingle(candidate.candidate);
if (!(ice && jcand)) {
console.error('failed to get ice && jcand');
return;
}
ice.xmlns = 'urn:xmpp:jingle:transports:ice-udp:1';
if (jcand.type === 'srflx') {
this.hadstuncandidate = true;
} else if (jcand.type === 'relay') {
this.hadturncandidate = true;
}
if (this.usetrickle) {
if (this.usedrip) {
if (this.drip_container.length === 0) {
// start 20ms callout
window.setTimeout(function () {
if (self.drip_container.length === 0) return;
self.sendIceCandidates(self.drip_container);
self.drip_container = [];
}, 20);
}
this.drip_container.push(candidate);
return;
} else {
self.sendIceCandidate([candidate]);
}
}
} else {
//console.log('sendIceCandidate: last candidate.');
if (!this.usetrickle) {
//console.log('should send full offer now...');
var init = $iq({to: this.peerjid,
type: 'set'})
.c('jingle', {xmlns: 'urn:xmpp:jingle:1',
action: this.peerconnection.localDescription.type == 'offer' ? 'session-initiate' : 'session-accept',
initiator: this.initiator,
sid: this.sid});
this.localSDP = new SDP(this.peerconnection.localDescription.sdp);
var self = this;
var sendJingle = function (ssrc) {
if(!ssrc)
ssrc = {};
self.localSDP.toJingle(init, self.initiator == self.me ? 'initiator' : 'responder', ssrc);
self.connection.sendIQ(init,
function () {
//console.log('session initiate ack');
var ack = {};
ack.source = 'offer';
$(document).trigger('ack.jingle', [self.sid, ack]);
},
function (stanza) {
self.state = 'error';
self.peerconnection.close();
var error = ($(stanza).find('error').length) ? {
code: $(stanza).find('error').attr('code'),
reason: $(stanza).find('error :first')[0].tagName,
}:{};
error.source = 'offer';
JingleSession.onJingleError(self.sid, error);
},
10000);
}
sendJingle();
}
this.lasticecandidate = true;
console.log('Have we encountered any srflx candidates? ' + this.hadstuncandidate);
console.log('Have we encountered any relay candidates? ' + this.hadturncandidate);
if (!(this.hadstuncandidate || this.hadturncandidate) && this.peerconnection.signalingState != 'closed') {
$(document).trigger('nostuncandidates.jingle', [this.sid]);
}
}
};
JingleSession.prototype.sendIceCandidates = function (candidates) {
console.log('sendIceCandidates', candidates);
var cand = $iq({to: this.peerjid, type: 'set'})
.c('jingle', {xmlns: 'urn:xmpp:jingle:1',
action: 'transport-info',
initiator: this.initiator,
sid: this.sid});
for (var mid = 0; mid < this.localSDP.media.length; mid++) {
var cands = candidates.filter(function (el) { return el.sdpMLineIndex == mid; });
var mline = SDPUtil.parse_mline(this.localSDP.media[mid].split('\r\n')[0]);
if (cands.length > 0) {
var ice = SDPUtil.iceparams(this.localSDP.media[mid], this.localSDP.session);
ice.xmlns = 'urn:xmpp:jingle:transports:ice-udp:1';
cand.c('content', {creator: this.initiator == this.me ? 'initiator' : 'responder',
name: (cands[0].sdpMid? cands[0].sdpMid : mline.media)
}).c('transport', ice);
for (var i = 0; i < cands.length; i++) {
cand.c('candidate', SDPUtil.candidateToJingle(cands[i].candidate)).up();
}
// add fingerprint
if (SDPUtil.find_line(this.localSDP.media[mid], 'a=fingerprint:', this.localSDP.session)) {
var tmp = SDPUtil.parse_fingerprint(SDPUtil.find_line(this.localSDP.media[mid], 'a=fingerprint:', this.localSDP.session));
tmp.required = true;
cand.c(
'fingerprint',
{xmlns: 'urn:xmpp:jingle:apps:dtls:0'})
.t(tmp.fingerprint);
delete tmp.fingerprint;
cand.attrs(tmp);
cand.up();
}
cand.up(); // transport
cand.up(); // content
}
}
// might merge last-candidate notification into this, but it is called alot later. See webrtc issue #2340
//console.log('was this the last candidate', this.lasticecandidate);
this.connection.sendIQ(cand,
function () {
var ack = {};
ack.source = 'transportinfo';
$(document).trigger('ack.jingle', [this.sid, ack]);
},
function (stanza) {
var error = ($(stanza).find('error').length) ? {
code: $(stanza).find('error').attr('code'),
reason: $(stanza).find('error :first')[0].tagName,
}:{};
error.source = 'transportinfo';
JingleSession.onJingleError(this.sid, error);
},
10000);
};
JingleSession.prototype.sendOffer = function () {
//console.log('sendOffer...');
var self = this;
this.peerconnection.createOffer(function (sdp) {
self.createdOffer(sdp);
},
function (e) {
console.error('createOffer failed', e);
},
this.media_constraints
);
};
JingleSession.prototype.createdOffer = function (sdp) {
//console.log('createdOffer', sdp);
var self = this;
this.localSDP = new SDP(sdp.sdp);
//this.localSDP.mangle();
var sendJingle = function () {
var init = $iq({to: this.peerjid,
type: 'set'})
.c('jingle', {xmlns: 'urn:xmpp:jingle:1',
action: 'session-initiate',
initiator: this.initiator,
sid: this.sid});
self.localSDP.toJingle(init, this.initiator == this.me ? 'initiator' : 'responder', this.localStreamsSSRC);
self.connection.sendIQ(init,
function () {
var ack = {};
ack.source = 'offer';
$(document).trigger('ack.jingle', [self.sid, ack]);
},
function (stanza) {
self.state = 'error';
self.peerconnection.close();
var error = ($(stanza).find('error').length) ? {
code: $(stanza).find('error').attr('code'),
reason: $(stanza).find('error :first')[0].tagName,
}:{};
error.source = 'offer';
JingleSession.onJingleError(self.sid, error);
},
10000);
}
sdp.sdp = this.localSDP.raw;
this.peerconnection.setLocalDescription(sdp,
function () {
if(self.usetrickle)
{
sendJingle();
}
self.setLocalDescription();
//console.log('setLocalDescription success');
},
function (e) {
console.error('setLocalDescription failed', e);
}
);
var cands = SDPUtil.find_lines(this.localSDP.raw, 'a=candidate:');
for (var i = 0; i < cands.length; i++) {
var cand = SDPUtil.parse_icecandidate(cands[i]);
if (cand.type == 'srflx') {
this.hadstuncandidate = true;
} else if (cand.type == 'relay') {
this.hadturncandidate = true;
}
}
};
JingleSession.prototype.setRemoteDescription = function (elem, desctype) {
//console.log('setting remote description... ', desctype);
this.remoteSDP = new SDP('');
this.remoteSDP.fromJingle(elem);
if (this.peerconnection.remoteDescription !== null) {
console.log('setRemoteDescription when remote description is not null, should be pranswer', this.peerconnection.remoteDescription);
if (this.peerconnection.remoteDescription.type == 'pranswer') {
var pranswer = new SDP(this.peerconnection.remoteDescription.sdp);
for (var i = 0; i < pranswer.media.length; i++) {
// make sure we have ice ufrag and pwd
if (!SDPUtil.find_line(this.remoteSDP.media[i], 'a=ice-ufrag:', this.remoteSDP.session)) {
if (SDPUtil.find_line(pranswer.media[i], 'a=ice-ufrag:', pranswer.session)) {
this.remoteSDP.media[i] += SDPUtil.find_line(pranswer.media[i], 'a=ice-ufrag:', pranswer.session) + '\r\n';
} else {
console.warn('no ice ufrag?');
}
if (SDPUtil.find_line(pranswer.media[i], 'a=ice-pwd:', pranswer.session)) {
this.remoteSDP.media[i] += SDPUtil.find_line(pranswer.media[i], 'a=ice-pwd:', pranswer.session) + '\r\n';
} else {
console.warn('no ice pwd?');
}
}
// copy over candidates
var lines = SDPUtil.find_lines(pranswer.media[i], 'a=candidate:');
for (var j = 0; j < lines.length; j++) {
this.remoteSDP.media[i] += lines[j] + '\r\n';
}
}
this.remoteSDP.raw = this.remoteSDP.session + this.remoteSDP.media.join('');
}
}
var remotedesc = new RTCSessionDescription({type: desctype, sdp: this.remoteSDP.raw});
this.peerconnection.setRemoteDescription(remotedesc,
function () {
//console.log('setRemoteDescription success');
},
function (e) {
console.error('setRemoteDescription error', e);
JingleSession.onJingleFatalError(self, e);
}
);
};
JingleSession.prototype.addIceCandidate = function (elem) {
var self = this;
if (this.peerconnection.signalingState == 'closed') {
return;
}
if (!this.peerconnection.remoteDescription && this.peerconnection.signalingState == 'have-local-offer') {
console.log('trickle ice candidate arriving before session accept...');
// create a PRANSWER for setRemoteDescription
if (!this.remoteSDP) {
var cobbled = 'v=0\r\n' +
'o=- ' + '1923518516' + ' 2 IN IP4 0.0.0.0\r\n' +// FIXME
's=-\r\n' +
't=0 0\r\n';
// first, take some things from the local description
for (var i = 0; i < this.localSDP.media.length; i++) {
cobbled += SDPUtil.find_line(this.localSDP.media[i], 'm=') + '\r\n';
cobbled += SDPUtil.find_lines(this.localSDP.media[i], 'a=rtpmap:').join('\r\n') + '\r\n';
if (SDPUtil.find_line(this.localSDP.media[i], 'a=mid:')) {
cobbled += SDPUtil.find_line(this.localSDP.media[i], 'a=mid:') + '\r\n';
}
cobbled += 'a=inactive\r\n';
}
this.remoteSDP = new SDP(cobbled);
}
// then add things like ice and dtls from remote candidate
elem.each(function () {
for (var i = 0; i < self.remoteSDP.media.length; i++) {
if (SDPUtil.find_line(self.remoteSDP.media[i], 'a=mid:' + $(this).attr('name')) ||
self.remoteSDP.media[i].indexOf('m=' + $(this).attr('name')) === 0) {
if (!SDPUtil.find_line(self.remoteSDP.media[i], 'a=ice-ufrag:')) {
var tmp = $(this).find('transport');
self.remoteSDP.media[i] += 'a=ice-ufrag:' + tmp.attr('ufrag') + '\r\n';
self.remoteSDP.media[i] += 'a=ice-pwd:' + tmp.attr('pwd') + '\r\n';
tmp = $(this).find('transport>fingerprint');
if (tmp.length) {
self.remoteSDP.media[i] += 'a=fingerprint:' + tmp.attr('hash') + ' ' + tmp.text() + '\r\n';
} else {
console.log('no dtls fingerprint (webrtc issue #1718?)');
self.remoteSDP.media[i] += 'a=crypto:1 AES_CM_128_HMAC_SHA1_80 inline:BAADBAADBAADBAADBAADBAADBAADBAADBAADBAAD\r\n';
}
break;
}
}
}
});
this.remoteSDP.raw = this.remoteSDP.session + this.remoteSDP.media.join('');
// we need a complete SDP with ice-ufrag/ice-pwd in all parts
// this makes the assumption that the PRANSWER is constructed such that the ice-ufrag is in all mediaparts
// but it could be in the session part as well. since the code above constructs this sdp this can't happen however
var iscomplete = this.remoteSDP.media.filter(function (mediapart) {
return SDPUtil.find_line(mediapart, 'a=ice-ufrag:');
}).length == this.remoteSDP.media.length;
if (iscomplete) {
console.log('setting pranswer');
try {
this.peerconnection.setRemoteDescription(new RTCSessionDescription({type: 'pranswer', sdp: this.remoteSDP.raw }),
function() {
},
function(e) {
console.log('setRemoteDescription pranswer failed', e.toString());
});
} catch (e) {
console.error('setting pranswer failed', e);
}
} else {
//console.log('not yet setting pranswer');
}
}
// operate on each content element
elem.each(function () {
// would love to deactivate this, but firefox still requires it
var idx = -1;
var i;
for (i = 0; i < self.remoteSDP.media.length; i++) {
if (SDPUtil.find_line(self.remoteSDP.media[i], 'a=mid:' + $(this).attr('name')) ||
self.remoteSDP.media[i].indexOf('m=' + $(this).attr('name')) === 0) {
idx = i;
break;
}
}
if (idx == -1) { // fall back to localdescription
for (i = 0; i < self.localSDP.media.length; i++) {
if (SDPUtil.find_line(self.localSDP.media[i], 'a=mid:' + $(this).attr('name')) ||
self.localSDP.media[i].indexOf('m=' + $(this).attr('name')) === 0) {
idx = i;
break;
}
}
}
var name = $(this).attr('name');
// TODO: check ice-pwd and ice-ufrag?
$(this).find('transport>candidate').each(function () {
var line, candidate;
line = SDPUtil.candidateFromJingle(this);
candidate = new RTCIceCandidate({sdpMLineIndex: idx,
sdpMid: name,
candidate: line});
try {
self.peerconnection.addIceCandidate(candidate);
} catch (e) {
console.error('addIceCandidate failed', e.toString(), line);
}
});
});
};
JingleSession.prototype.sendAnswer = function (provisional) {
//console.log('createAnswer', provisional);
var self = this;
this.peerconnection.createAnswer(
function (sdp) {
self.createdAnswer(sdp, provisional);
},
function (e) {
console.error('createAnswer failed', e);
},
this.media_constraints
);
};
JingleSession.prototype.createdAnswer = function (sdp, provisional) {
//console.log('createAnswer callback');
var self = this;
this.localSDP = new SDP(sdp.sdp);
//this.localSDP.mangle();
this.usepranswer = provisional === true;
if (this.usetrickle) {
if (this.usepranswer) {
sdp.type = 'pranswer';
for (var i = 0; i < this.localSDP.media.length; i++) {
this.localSDP.media[i] = this.localSDP.media[i].replace('a=sendrecv\r\n', 'a=inactive\r\n');
}
this.localSDP.raw = this.localSDP.session + '\r\n' + this.localSDP.media.join('');
}
}
var self = this;
var sendJingle = function (ssrcs) {
var accept = $iq({to: self.peerjid,
type: 'set'})
.c('jingle', {xmlns: 'urn:xmpp:jingle:1',
action: 'session-accept',
initiator: self.initiator,
responder: self.responder,
sid: self.sid });
self.localSDP.toJingle(accept, self.initiator == self.me ? 'initiator' : 'responder', ssrcs);
self.connection.sendIQ(accept,
function () {
var ack = {};
ack.source = 'answer';
$(document).trigger('ack.jingle', [self.sid, ack]);
},
function (stanza) {
var error = ($(stanza).find('error').length) ? {
code: $(stanza).find('error').attr('code'),
reason: $(stanza).find('error :first')[0].tagName,
}:{};
error.source = 'answer';
JingleSession.onJingleError(self.sid, error);
},
10000);
}
sdp.sdp = this.localSDP.raw;
this.peerconnection.setLocalDescription(sdp,
function () {
//console.log('setLocalDescription success');
if (self.usetrickle && !self.usepranswer) {
sendJingle();
}
self.setLocalDescription();
},
function (e) {
console.error('setLocalDescription failed', e);
}
);
var cands = SDPUtil.find_lines(this.localSDP.raw, 'a=candidate:');
for (var j = 0; j < cands.length; j++) {
var cand = SDPUtil.parse_icecandidate(cands[j]);
if (cand.type == 'srflx') {
this.hadstuncandidate = true;
} else if (cand.type == 'relay') {
this.hadturncandidate = true;
}
}
};
JingleSession.prototype.sendTerminate = function (reason, text) {
var self = this,
term = $iq({to: this.peerjid,
type: 'set'})
.c('jingle', {xmlns: 'urn:xmpp:jingle:1',
action: 'session-terminate',
initiator: this.initiator,
sid: this.sid})
.c('reason')
.c(reason || 'success');
if (text) {
term.up().c('text').t(text);
}
this.connection.sendIQ(term,
function () {
self.peerconnection.close();
self.peerconnection = null;
self.terminate();
var ack = {};
ack.source = 'terminate';
$(document).trigger('ack.jingle', [self.sid, ack]);
},
function (stanza) {
var error = ($(stanza).find('error').length) ? {
code: $(stanza).find('error').attr('code'),
reason: $(stanza).find('error :first')[0].tagName,
}:{};
$(document).trigger('ack.jingle', [self.sid, error]);
},
10000);
if (this.statsinterval !== null) {
window.clearInterval(this.statsinterval);
this.statsinterval = null;
}
};
JingleSession.prototype.addSource = function (elem, fromJid) {
var self = this;
// FIXME: dirty waiting
if (!this.peerconnection.localDescription)
{
console.warn("addSource - localDescription not ready yet")
setTimeout(function()
{
self.addSource(elem, fromJid);
},
200
);
return;
}
console.log('addssrc', new Date().getTime());
console.log('ice', this.peerconnection.iceConnectionState);
var sdp = new SDP(this.peerconnection.remoteDescription.sdp);
var mySdp = new SDP(this.peerconnection.localDescription.sdp);
$(elem).each(function (idx, content) {
var name = $(content).attr('name');
var lines = '';
$(content).find('ssrc-group[xmlns="urn:xmpp:jingle:apps:rtp:ssma:0"]').each(function() {
var semantics = this.getAttribute('semantics');
var ssrcs = $(this).find('>source').map(function () {
return this.getAttribute('ssrc');
}).get();
if (ssrcs.length != 0) {
lines += 'a=ssrc-group:' + semantics + ' ' + ssrcs.join(' ') + '\r\n';
}
});
var tmp = $(content).find('source[xmlns="urn:xmpp:jingle:apps:rtp:ssma:0"]'); // can handle both >source and >description>source
tmp.each(function () {
var ssrc = $(this).attr('ssrc');
if(mySdp.containsSSRC(ssrc)){
/**
* This happens when multiple participants change their streams at the same time and
* ColibriFocus.modifySources have to wait for stable state. In the meantime multiple
* addssrc are scheduled for update IQ. See
*/
console.warn("Got add stream request for my own ssrc: "+ssrc);
return;
}
$(this).find('>parameter').each(function () {
lines += 'a=ssrc:' + ssrc + ' ' + $(this).attr('name');
if ($(this).attr('value') && $(this).attr('value').length)
lines += ':' + $(this).attr('value');
lines += '\r\n';
});
});
sdp.media.forEach(function(media, idx) {
if (!SDPUtil.find_line(media, 'a=mid:' + name))
return;
sdp.media[idx] += lines;
if (!self.addssrc[idx]) self.addssrc[idx] = '';
self.addssrc[idx] += lines;
});
sdp.raw = sdp.session + sdp.media.join('');
});
this.modifySourcesQueue.push(function() {
// When a source is added and if this is FF, a new channel is allocated
// for receiving the added source. We need to diffuse the SSRC of this
// new recvonly channel to the rest of the peers.
console.log('modify sources done');
var newSdp = new SDP(self.peerconnection.localDescription.sdp);
console.log("SDPs", mySdp, newSdp);
self.notifyMySSRCUpdate(mySdp, newSdp);
});
};
JingleSession.prototype.removeSource = function (elem, fromJid) {
var self = this;
// FIXME: dirty waiting
if (!this.peerconnection.localDescription)
{
console.warn("removeSource - localDescription not ready yet")
setTimeout(function()
{
self.removeSource(elem, fromJid);
},
200
);
return;
}
console.log('removessrc', new Date().getTime());
console.log('ice', this.peerconnection.iceConnectionState);
var sdp = new SDP(this.peerconnection.remoteDescription.sdp);
var mySdp = new SDP(this.peerconnection.localDescription.sdp);
$(elem).each(function (idx, content) {
var name = $(content).attr('name');
var lines = '';
$(content).find('ssrc-group[xmlns="urn:xmpp:jingle:apps:rtp:ssma:0"]').each(function() {
var semantics = this.getAttribute('semantics');
var ssrcs = $(this).find('>source').map(function () {
return this.getAttribute('ssrc');
}).get();
if (ssrcs.length != 0) {
lines += 'a=ssrc-group:' + semantics + ' ' + ssrcs.join(' ') + '\r\n';
}
});
var tmp = $(content).find('source[xmlns="urn:xmpp:jingle:apps:rtp:ssma:0"]'); // can handle both >source and >description>source
tmp.each(function () {
var ssrc = $(this).attr('ssrc');
// This should never happen, but can be useful for bug detection
if(mySdp.containsSSRC(ssrc)){
console.error("Got remove stream request for my own ssrc: "+ssrc);
return;
}
$(this).find('>parameter').each(function () {
lines += 'a=ssrc:' + ssrc + ' ' + $(this).attr('name');
if ($(this).attr('value') && $(this).attr('value').length)
lines += ':' + $(this).attr('value');
lines += '\r\n';
});
});
sdp.media.forEach(function(media, idx) {
if (!SDPUtil.find_line(media, 'a=mid:' + name))
return;
sdp.media[idx] += lines;
if (!self.removessrc[idx]) self.removessrc[idx] = '';
self.removessrc[idx] += lines;
});
sdp.raw = sdp.session + sdp.media.join('');
});
this.modifySourcesQueue.push(function() {
// When a source is removed and if this is FF, the recvonly channel that
// receives the remote stream is deactivated . We need to diffuse the
// recvonly SSRC removal to the rest of the peers.
console.log('modify sources done');
var newSdp = new SDP(self.peerconnection.localDescription.sdp);
console.log("SDPs", mySdp, newSdp);
self.notifyMySSRCUpdate(mySdp, newSdp);
});
};
JingleSession.prototype._modifySources = function (successCallback, queueCallback) {
var self = this;
if (this.peerconnection.signalingState == 'closed') return;
if (!(this.addssrc.length || this.removessrc.length || this.pendingop !== null || this.switchstreams)){
// There is nothing to do since scheduled job might have been executed by another succeeding call
this.setLocalDescription();
if(successCallback){
successCallback();
}
queueCallback();
return;
}
// Reset switch streams flag
this.switchstreams = false;
var sdp = new SDP(this.peerconnection.remoteDescription.sdp);
// add sources
this.addssrc.forEach(function(lines, idx) {
sdp.media[idx] += lines;
});
this.addssrc = [];
// remove sources
this.removessrc.forEach(function(lines, idx) {
lines = lines.split('\r\n');
lines.pop(); // remove empty last element;
lines.forEach(function(line) {
sdp.media[idx] = sdp.media[idx].replace(line + '\r\n', '');
});
});
this.removessrc = [];
// FIXME:
// this was a hack for the situation when only one peer exists
// in the conference.
// check if still required and remove
if (sdp.media[0])
sdp.media[0] = sdp.media[0].replace('a=recvonly', 'a=sendrecv');
if (sdp.media[1])
sdp.media[1] = sdp.media[1].replace('a=recvonly', 'a=sendrecv');
sdp.raw = sdp.session + sdp.media.join('');
this.peerconnection.setRemoteDescription(new RTCSessionDescription({type: 'offer', sdp: sdp.raw}),
function() {
if(self.signalingState == 'closed') {
console.error("createAnswer attempt on closed state");
queueCallback("createAnswer attempt on closed state");
return;
}
self.peerconnection.createAnswer(
function(modifiedAnswer) {
// change video direction, see https://github.com/jitsi/jitmeet/issues/41
if (self.pendingop !== null) {
var sdp = new SDP(modifiedAnswer.sdp);
if (sdp.media.length > 1) {
switch(self.pendingop) {
case 'mute':
sdp.media[1] = sdp.media[1].replace('a=sendrecv', 'a=recvonly');
break;
case 'unmute':
sdp.media[1] = sdp.media[1].replace('a=recvonly', 'a=sendrecv');
break;
}
sdp.raw = sdp.session + sdp.media.join('');
modifiedAnswer.sdp = sdp.raw;
}
self.pendingop = null;
}
// FIXME: pushing down an answer while ice connection state
// is still checking is bad...
//console.log(self.peerconnection.iceConnectionState);
// trying to work around another chrome bug
//modifiedAnswer.sdp = modifiedAnswer.sdp.replace(/a=setup:active/g, 'a=setup:actpass');
self.peerconnection.setLocalDescription(modifiedAnswer,
function() {
//console.log('modified setLocalDescription ok');
self.setLocalDescription();
if(successCallback){
successCallback();
}
queueCallback();
},
function(error) {
console.error('modified setLocalDescription failed', error);
queueCallback(error);
}
);
},
function(error) {
console.error('modified answer failed', error);
queueCallback(error);
}
);
},
function(error) {
console.error('modify failed', error);
queueCallback(error);
}
);
};
/**
* Switches video streams.
* @param new_stream new stream that will be used as video of this session.
* @param oldStream old video stream of this session.
* @param success_callback callback executed after successful stream switch.
*/
JingleSession.prototype.switchStreams = function (new_stream, oldStream, success_callback, isAudio) {
var self = this;
// Remember SDP to figure out added/removed SSRCs
var oldSdp = null;
if(self.peerconnection) {
if(self.peerconnection.localDescription) {
oldSdp = new SDP(self.peerconnection.localDescription.sdp);
}
self.peerconnection.removeStream(oldStream, true);
if(new_stream)
self.peerconnection.addStream(new_stream);
}
if(!isAudio)
APP.RTC.switchVideoStreams(new_stream, oldStream);
// Conference is not active
if(!oldSdp || !self.peerconnection) {
success_callback();
return;
}
self.switchstreams = true;
self.modifySourcesQueue.push(function() {
console.log('modify sources done');
success_callback();
var newSdp = new SDP(self.peerconnection.localDescription.sdp);
console.log("SDPs", oldSdp, newSdp);
self.notifyMySSRCUpdate(oldSdp, newSdp);
});
};
/**
* Figures out added/removed ssrcs and send update IQs.
* @param old_sdp SDP object for old description.
* @param new_sdp SDP object for new description.
*/
JingleSession.prototype.notifyMySSRCUpdate = function (old_sdp, new_sdp) {
if (!(this.peerconnection.signalingState == 'stable' &&
this.peerconnection.iceConnectionState == 'connected')){
console.log("Too early to send updates");
return;
}
// send source-remove IQ.
sdpDiffer = new SDPDiffer(new_sdp, old_sdp);
var remove = $iq({to: this.peerjid, type: 'set'})
.c('jingle', {
xmlns: 'urn:xmpp:jingle:1',
action: 'source-remove',
initiator: this.initiator,
sid: this.sid
}
);
var removed = sdpDiffer.toJingle(remove);
if (removed) {
this.connection.sendIQ(remove,
function (res) {
console.info('got remove result', res);
},
function (err) {
console.error('got remove error', err);
}
);
} else {
console.log('removal not necessary');
}
// send source-add IQ.
var sdpDiffer = new SDPDiffer(old_sdp, new_sdp);
var add = $iq({to: this.peerjid, type: 'set'})
.c('jingle', {
xmlns: 'urn:xmpp:jingle:1',
action: 'source-add',
initiator: this.initiator,
sid: this.sid
}
);
var added = sdpDiffer.toJingle(add);
if (added) {
this.connection.sendIQ(add,
function (res) {
console.info('got add result', res);
},
function (err) {
console.error('got add error', err);
}
);
} else {
console.log('addition not necessary');
}
};
/**
* Mutes/unmutes the (local) video i.e. enables/disables all video tracks.
*
* @param mute <tt>true</tt> to mute the (local) video i.e. to disable all video
* tracks; otherwise, <tt>false</tt>
* @param callback a function to be invoked with <tt>mute</tt> after all video
* tracks have been enabled/disabled. The function may, optionally, return
* another function which is to be invoked after the whole mute/unmute operation
* has completed successfully.
* @param options an object which specifies optional arguments such as the
* <tt>boolean</tt> key <tt>byUser</tt> with default value <tt>true</tt> which
* specifies whether the method was initiated in response to a user command (in
* contrast to an automatic decision made by the application logic)
*/
JingleSession.prototype.setVideoMute = function (mute, callback, options) {
var byUser;
if (options) {
byUser = options.byUser;
if (typeof byUser === 'undefined') {
byUser = true;
}
} else {
byUser = true;
}
// The user's command to mute the (local) video takes precedence over any
// automatic decision made by the application logic.
if (byUser) {
this.videoMuteByUser = mute;
} else if (this.videoMuteByUser) {
return;
}
this.hardMuteVideo(mute);
var self = this;
var oldSdp = null;
if(self.peerconnection) {
if(self.peerconnection.localDescription) {
oldSdp = new SDP(self.peerconnection.localDescription.sdp);
}
}
this.modifySourcesQueue.push(function() {
console.log('modify sources done');
callback(mute);
var newSdp = new SDP(self.peerconnection.localDescription.sdp);
console.log("SDPs", oldSdp, newSdp);
self.notifyMySSRCUpdate(oldSdp, newSdp);
});
};
JingleSession.prototype.hardMuteVideo = function (muted) {
this.pendingop = muted ? 'mute' : 'unmute';
};
JingleSession.prototype.sendMute = function (muted, content) {
var info = $iq({to: this.peerjid,
type: 'set'})
.c('jingle', {xmlns: 'urn:xmpp:jingle:1',
action: 'session-info',
initiator: this.initiator,
sid: this.sid });
info.c(muted ? 'mute' : 'unmute', {xmlns: 'urn:xmpp:jingle:apps:rtp:info:1'});
info.attrs({'creator': this.me == this.initiator ? 'creator' : 'responder'});
if (content) {
info.attrs({'name': content});
}
this.connection.send(info);
};
JingleSession.prototype.sendRinging = function () {
var info = $iq({to: this.peerjid,
type: 'set'})
.c('jingle', {xmlns: 'urn:xmpp:jingle:1',
action: 'session-info',
initiator: this.initiator,
sid: this.sid });
info.c('ringing', {xmlns: 'urn:xmpp:jingle:apps:rtp:info:1'});
this.connection.send(info);
};
JingleSession.prototype.getStats = function (interval) {
var self = this;
var recv = {audio: 0, video: 0};
var lost = {audio: 0, video: 0};
var lastrecv = {audio: 0, video: 0};
var lastlost = {audio: 0, video: 0};
var loss = {audio: 0, video: 0};
var delta = {audio: 0, video: 0};
this.statsinterval = window.setInterval(function () {
if (self && self.peerconnection && self.peerconnection.getStats) {
self.peerconnection.getStats(function (stats) {
var results = stats.result();
// TODO: there are so much statistics you can get from this..
for (var i = 0; i < results.length; ++i) {
if (results[i].type == 'ssrc') {
var packetsrecv = results[i].stat('packetsReceived');
var packetslost = results[i].stat('packetsLost');
if (packetsrecv && packetslost) {
packetsrecv = parseInt(packetsrecv, 10);
packetslost = parseInt(packetslost, 10);
if (results[i].stat('googFrameRateReceived')) {
lastlost.video = lost.video;
lastrecv.video = recv.video;
recv.video = packetsrecv;
lost.video = packetslost;
} else {
lastlost.audio = lost.audio;
lastrecv.audio = recv.audio;
recv.audio = packetsrecv;
lost.audio = packetslost;
}
}
}
}
delta.audio = recv.audio - lastrecv.audio;
delta.video = recv.video - lastrecv.video;
loss.audio = (delta.audio > 0) ? Math.ceil(100 * (lost.audio - lastlost.audio) / delta.audio) : 0;
loss.video = (delta.video > 0) ? Math.ceil(100 * (lost.video - lastlost.video) / delta.video) : 0;
$(document).trigger('packetloss.jingle', [self.sid, loss]);
});
}
}, interval || 3000);
return this.statsinterval;
};
JingleSession.onJingleError = function (session, error)
{
console.error("Jingle error", error);
}
JingleSession.onJingleFatalError = function (session, error)
{
this.service.sessionTerminated = true;
this.connection.emuc.doLeave();
APP.UI.messageHandler.showError("dialog.sorry",
"dialog.internalError");
}
JingleSession.prototype.setLocalDescription = function () {
// put our ssrcs into presence so other clients can identify our stream
var newssrcs = [];
var session = transform.parse(this.peerconnection.localDescription.sdp);
session.media.forEach(function (media) {
if (media.ssrcs != null && media.ssrcs.length > 0) {
// TODO(gp) maybe exclude FID streams?
media.ssrcs.forEach(function (ssrc) {
if (ssrc.attribute !== 'cname') {
return;
}
newssrcs.push({
'ssrc': ssrc.id,
'type': media.type,
'direction': media.direction
});
});
}
else if(this.localStreamsSSRC && this.localStreamsSSRC[media.type])
{
newssrcs.push({
'ssrc': this.localStreamsSSRC[media.type],
'type': media.type,
'direction': media.direction
});
}
});
console.log('new ssrcs', newssrcs);
// Have to clear presence map to get rid of removed streams
this.connection.emuc.clearPresenceMedia();
if (newssrcs.length > 0) {
for (var i = 1; i <= newssrcs.length; i ++) {
// Change video type to screen
if (newssrcs[i-1].type === 'video' && APP.desktopsharing.isUsingScreenStream()) {
newssrcs[i-1].type = 'screen';
}
this.connection.emuc.addMediaToPresence(i,
newssrcs[i-1].type, newssrcs[i-1].ssrc, newssrcs[i-1].direction);
}
this.connection.emuc.sendPresence();
}
}
// an attempt to work around https://github.com/jitsi/jitmeet/issues/32
function sendKeyframe(pc) {
console.log('sendkeyframe', pc.iceConnectionState);
if (pc.iceConnectionState !== 'connected') return; // safe...
pc.setRemoteDescription(
pc.remoteDescription,
function () {
pc.createAnswer(
function (modifiedAnswer) {
pc.setLocalDescription(
modifiedAnswer,
function () {
// noop
},
function (error) {
console.log('triggerKeyframe setLocalDescription failed', error);
APP.UI.messageHandler.showError();
}
);
},
function (error) {
console.log('triggerKeyframe createAnswer failed', error);
APP.UI.messageHandler.showError();
}
);
},
function (error) {
console.log('triggerKeyframe setRemoteDescription failed', error);
APP.UI.messageHandler.showError();
}
);
}
JingleSession.prototype.remoteStreamAdded = function (data, times) {
var self = this;
var thessrc;
var ssrc2jid = this.connection.emuc.ssrc2jid;
// look up an associated JID for a stream id
if (data.stream.id && data.stream.id.indexOf('mixedmslabel') === -1) {
// look only at a=ssrc: and _not_ at a=ssrc-group: lines
var ssrclines
= SDPUtil.find_lines(this.peerconnection.remoteDescription.sdp, 'a=ssrc:');
ssrclines = ssrclines.filter(function (line) {
// NOTE(gp) previously we filtered on the mslabel, but that property
// is not always present.
// return line.indexOf('mslabel:' + data.stream.label) !== -1;
return ((line.indexOf('msid:' + data.stream.id) !== -1));
});
if (ssrclines.length) {
thessrc = ssrclines[0].substring(7).split(' ')[0];
// We signal our streams (through Jingle to the focus) before we set
// our presence (through which peers associate remote streams to
// jids). So, it might arrive that a remote stream is added but
// ssrc2jid is not yet updated and thus data.peerjid cannot be
// successfully set. Here we wait for up to a second for the
// presence to arrive.
if (!ssrc2jid[thessrc]) {
if (typeof times === 'undefined')
{
times = 0;
}
if (times > 10)
{
console.warning('Waiting for jid timed out', thessrc);
}
else
{
setTimeout(function(d) {
return function() {
self.remoteStreamAdded(d, times++);
}
}(data), 250);
}
return;
}
// ok to overwrite the one from focus? might save work in colibri.js
console.log('associated jid', ssrc2jid[thessrc], data.peerjid);
if (ssrc2jid[thessrc]) {
data.peerjid = ssrc2jid[thessrc];
}
}
}
APP.RTC.createRemoteStream(data, this.sid, thessrc);
var isVideo = data.stream.getVideoTracks().length > 0;
// an attempt to work around https://github.com/jitsi/jitmeet/issues/32
if (isVideo &&
data.peerjid && this.peerjid === data.peerjid &&
data.stream.getVideoTracks().length === 0 &&
APP.RTC.localVideo.getTracks().length > 0) {
window.setTimeout(function () {
sendKeyframe(self.peerconnection);
}, 3000);
}
}
module.exports = JingleSession;