jiti-meet/libs/strophe/strophe.jingle.session.js

725 lines
29 KiB
JavaScript

/* jshint -W117 */
// Jingle stuff
JingleSession.prototype = Object.create(SessionBase.prototype);
function JingleSession(me, sid, connection) {
SessionBase.call(this, connection, sid);
this.me = me;
this.initiator = null;
this.responder = null;
this.isInitiator = null;
this.peerjid = null;
this.state = null;
this.localSDP = null;
this.remoteSDP = null;
this.localStreams = [];
this.relayedStreams = [];
this.remoteStreams = [];
this.startTime = null;
this.stopTime = null;
this.media_constraints = null;
this.pc_constraints = null;
this.ice_config = {};
this.drip_container = [];
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.wait = true;
}
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) {
self.remoteStreams.push(event.stream);
$(document).trigger('remotestreamadded.jingle', [event, self.sid]);
};
this.peerconnection.onremovestream = function (event) {
// Remove the stream from remoteStreams
var streamIdx = self.remoteStreams.indexOf(event.stream);
if(streamIdx !== -1){
self.remoteStreams.splice(streamIdx, 1);
}
// FIXME: remotestreamremoved.jingle not defined anywhere(unused)
$(document).trigger('remotestreamremoved.jingle', [event, self.sid]);
};
this.peerconnection.onsignalingstatechange = function (event) {
if (!(self && self.peerconnection)) return;
};
this.peerconnection.oniceconnectionstatechange = function (event) {
if (!(self && self.peerconnection)) return;
switch (self.peerconnection.iceConnectionState) {
case 'connected':
this.startTime = new Date();
break;
case 'disconnected':
this.stopTime = new Date();
break;
}
$(document).trigger('iceconnectionstatechange.jingle', [self.sid, self]);
};
// add any local and relayed stream
this.localStreams.forEach(function(stream) {
self.peerconnection.addStream(stream);
});
this.relayedStreams.forEach(function(stream) {
self.peerconnection.addStream(stream);
});
};
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');
}
pranswer = simulcast.reverseTransformLocalDescription(pranswer);
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.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';
$(document).trigger('error.jingle', [self.sid, error]);
},
10000);
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');
}
this.peerconnection.setLocalDescription(new RTCSessionDescription({type: 'answer', sdp: sdp}),
function () {
//console.log('setLocalDescription success');
$(document).trigger('setLocalDescription.jingle', [self.sid]);
},
function (e) {
console.error('setLocalDescription failed', e);
}
);
};
/**
* Implements SessionBase.sendSSRCUpdate.
*/
JingleSession.prototype.sendSSRCUpdate = function(sdpMediaSsrcs, fromJid, isadd) {
var self = this;
console.log('tell', self.peerjid, 'about ' + (isadd ? 'new' : 'removed') + ' ssrcs from' + self.me);
if (!(this.peerconnection.signalingState == 'stable' && this.peerconnection.iceConnectionState == 'connected')){
console.log("Too early to send updates");
return;
}
this.sendSSRCUpdateIq(sdpMediaSsrcs, self.sid, self.initiator, self.peerjid, isadd);
};
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(event.candidate);
return;
} else {
self.sendIceCandidate([event.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);
this.localSDP.toJingle(init, this.initiator == this.me ? 'initiator' : 'responder');
this.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';
$(document).trigger('error.jingle', [self.sid, error]);
},
10000);
}
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; });
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
}).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';
$(document).trigger('error.jingle', [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();
if (this.usetrickle) {
var init = $iq({to: this.peerjid,
type: 'set'})
.c('jingle', {xmlns: 'urn:xmpp:jingle:1',
action: 'session-initiate',
initiator: this.initiator,
sid: this.sid});
this.localSDP.toJingle(init, this.initiator == this.me ? 'initiator' : 'responder');
this.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';
$(document).trigger('error.jingle', [self.sid, error]);
},
10000);
}
sdp.sdp = this.localSDP.raw;
this.peerconnection.setLocalDescription(sdp,
function () {
$(document).trigger('setLocalDescription.jingle', [self.sid]);
//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);
$(document).trigger('fatalError.jingle', [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) {
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 });
var publicLocalDesc = simulcast.reverseTransformLocalDescription(sdp);
var publicLocalSDP = new SDP(publicLocalDesc.sdp);
publicLocalSDP.toJingle(accept, this.initiator == this.me ? 'initiator' : 'responder');
this.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';
$(document).trigger('error.jingle', [self.sid, error]);
},
10000);
} else {
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('');
}
}
sdp.sdp = this.localSDP.raw;
this.peerconnection.setLocalDescription(sdp,
function () {
$(document).trigger('setLocalDescription.jingle', [self.sid]);
//console.log('setLocalDescription success');
},
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.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;
};