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jiti-meet/modules/xmpp/strophe.jingle.js

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JavaScript
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/* jshint -W117 */
/* jshint -W101 */
var JingleSession = require("./JingleSessionPC");
var XMPPEvents = require("../../service/xmpp/XMPPEvents");
var RTCBrowserType = require("../RTC/RTCBrowserType");
module.exports = function(XMPP, eventEmitter) {
Strophe.addConnectionPlugin('jingle', {
connection: null,
sessions: {},
jid2session: {},
ice_config: {iceServers: []},
pc_constraints: {},
activecall: null,
media_constraints: {
mandatory: {
'OfferToReceiveAudio': true,
'OfferToReceiveVideo': true
}
// MozDontOfferDataChannel: true when this is firefox
},
init: function (conn) {
this.connection = conn;
if (this.connection.disco) {
// http://xmpp.org/extensions/xep-0167.html#support
// http://xmpp.org/extensions/xep-0176.html#support
this.connection.disco.addFeature('urn:xmpp:jingle:1');
this.connection.disco.addFeature('urn:xmpp:jingle:apps:rtp:1');
this.connection.disco.addFeature('urn:xmpp:jingle:transports:ice-udp:1');
this.connection.disco.addFeature('urn:xmpp:jingle:apps:dtls:0');
this.connection.disco.addFeature('urn:xmpp:jingle:transports:dtls-sctp:1');
this.connection.disco.addFeature('urn:xmpp:jingle:apps:rtp:audio');
this.connection.disco.addFeature('urn:xmpp:jingle:apps:rtp:video');
if (RTCBrowserType.isChrome() || RTCBrowserType.isOpera() ||
RTCBrowserType.isTemasysPluginUsed()) {
this.connection.disco.addFeature('urn:ietf:rfc:4588');
}
// this is dealt with by SDP O/A so we don't need to announce this
//this.connection.disco.addFeature('urn:xmpp:jingle:apps:rtp:rtcp-fb:0'); // XEP-0293
//this.connection.disco.addFeature('urn:xmpp:jingle:apps:rtp:rtp-hdrext:0'); // XEP-0294
this.connection.disco.addFeature('urn:ietf:rfc:5761'); // rtcp-mux
this.connection.disco.addFeature('urn:ietf:rfc:5888'); // a=group, e.g. bundle
//this.connection.disco.addFeature('urn:ietf:rfc:5576'); // a=ssrc
}
this.connection.addHandler(this.onJingle.bind(this), 'urn:xmpp:jingle:1', 'iq', 'set', null, null);
},
onJingle: function (iq) {
var sid = $(iq).find('jingle').attr('sid');
var action = $(iq).find('jingle').attr('action');
var fromJid = iq.getAttribute('from');
// send ack first
var ack = $iq({type: 'result',
to: fromJid,
id: iq.getAttribute('id')
});
console.log('on jingle ' + action + ' from ' + fromJid, iq);
var sess = this.sessions[sid];
if ('session-initiate' != action) {
if (sess === null) {
ack.type = 'error';
ack.c('error', {type: 'cancel'})
.c('item-not-found', {xmlns: 'urn:ietf:params:xml:ns:xmpp-stanzas'}).up()
.c('unknown-session', {xmlns: 'urn:xmpp:jingle:errors:1'});
this.connection.send(ack);
return true;
}
// local jid is not checked
if (fromJid != sess.peerjid) {
console.warn('jid mismatch for session id', sid, fromJid, sess.peerjid);
ack.type = 'error';
ack.c('error', {type: 'cancel'})
.c('item-not-found', {xmlns: 'urn:ietf:params:xml:ns:xmpp-stanzas'}).up()
.c('unknown-session', {xmlns: 'urn:xmpp:jingle:errors:1'});
this.connection.send(ack);
return true;
}
} else if (sess !== undefined) {
// existing session with same session id
// this might be out-of-order if the sess.peerjid is the same as from
ack.type = 'error';
ack.c('error', {type: 'cancel'})
.c('service-unavailable', {xmlns: 'urn:ietf:params:xml:ns:xmpp-stanzas'}).up();
console.warn('duplicate session id', sid);
this.connection.send(ack);
return true;
}
// FIXME: check for a defined action
this.connection.send(ack);
// see http://xmpp.org/extensions/xep-0166.html#concepts-session
switch (action) {
case 'session-initiate':
console.log("(TIME) received session-initiate:\t",
window.performance.now());
var startMuted = $(iq).find('jingle>startmuted');
if (startMuted && startMuted.length > 0) {
var audioMuted = startMuted.attr("audio");
var videoMuted = startMuted.attr("video");
eventEmitter.emit(XMPPEvents.START_MUTED_FROM_FOCUS,
audioMuted === "true", videoMuted === "true");
}
sess = new JingleSession(
$(iq).attr('to'), $(iq).find('jingle').attr('sid'),
this.connection, XMPP, eventEmitter);
// configure session
sess.media_constraints = this.media_constraints;
sess.pc_constraints = this.pc_constraints;
sess.ice_config = this.ice_config;
sess.initialize(fromJid, false);
// FIXME: setRemoteDescription should only be done when this call is to be accepted
sess.setOffer($(iq).find('>jingle'));
this.sessions[sess.sid] = sess;
this.jid2session[sess.peerjid] = sess;
// the callback should either
// .sendAnswer and .accept
// or .sendTerminate -- not necessarily synchronous
// TODO: do we check activecall == null?
this.connection.jingle.activecall = sess;
eventEmitter.emit(XMPPEvents.CALL_INCOMING, sess);
// TODO: check affiliation and/or role
console.log('emuc data for', sess.peerjid,
this.connection.emuc.members[sess.peerjid]);
sess.sendAnswer();
sess.accept();
break;
case 'session-accept':
sess.setAnswer($(iq).find('>jingle'));
sess.accept();
$(document).trigger('callaccepted.jingle', [sess.sid]);
break;
case 'session-terminate':
if (!sess) {
break;
}
console.log('terminating...', sess.sid);
sess.terminate();
this.terminate(sess.sid);
if ($(iq).find('>jingle>reason').length) {
$(document).trigger('callterminated.jingle', [
sess.sid,
sess.peerjid,
$(iq).find('>jingle>reason>:first')[0].tagName,
$(iq).find('>jingle>reason>text').text()
]);
} else {
$(document).trigger('callterminated.jingle',
[sess.sid, sess.peerjid]);
}
break;
case 'transport-info':
sess.addIceCandidate($(iq).find('>jingle>content'));
break;
case 'session-info':
var affected;
if ($(iq).find('>jingle>ringing[xmlns="urn:xmpp:jingle:apps:rtp:info:1"]').length) {
$(document).trigger('ringing.jingle', [sess.sid]);
} else if ($(iq).find('>jingle>mute[xmlns="urn:xmpp:jingle:apps:rtp:info:1"]').length) {
affected = $(iq).find('>jingle>mute[xmlns="urn:xmpp:jingle:apps:rtp:info:1"]').attr('name');
$(document).trigger('mute.jingle', [sess.sid, affected]);
} else if ($(iq).find('>jingle>unmute[xmlns="urn:xmpp:jingle:apps:rtp:info:1"]').length) {
affected = $(iq).find('>jingle>unmute[xmlns="urn:xmpp:jingle:apps:rtp:info:1"]').attr('name');
$(document).trigger('unmute.jingle', [sess.sid, affected]);
}
break;
case 'addsource': // FIXME: proprietary, un-jingleish
case 'source-add': // FIXME: proprietary
sess.addSource($(iq).find('>jingle>content'));
break;
case 'removesource': // FIXME: proprietary, un-jingleish
case 'source-remove': // FIXME: proprietary
sess.removeSource($(iq).find('>jingle>content'));
break;
default:
console.warn('jingle action not implemented', action);
break;
}
return true;
},
initiate: function (peerjid, myjid) { // initiate a new jinglesession to peerjid
var sess = new JingleSession(myjid || this.connection.jid,
Math.random().toString(36).substr(2, 12), // random string
this.connection, XMPP, eventEmitter);
// configure session
sess.media_constraints = this.media_constraints;
sess.pc_constraints = this.pc_constraints;
sess.ice_config = this.ice_config;
sess.initialize(peerjid, true);
this.sessions[sess.sid] = sess;
this.jid2session[sess.peerjid] = sess;
sess.sendOffer();
return sess;
},
terminate: function (sid, reason, text) { // terminate by sessionid (or all sessions)
if (sid === null || sid === undefined) {
for (sid in this.sessions) {
if (this.sessions[sid].state != 'ended') {
this.sessions[sid].sendTerminate(reason || (!this.sessions[sid].active()) ? 'cancel' : null, text);
this.sessions[sid].terminate();
}
delete this.jid2session[this.sessions[sid].peerjid];
delete this.sessions[sid];
}
} else if (this.sessions.hasOwnProperty(sid)) {
if (this.sessions[sid].state != 'ended') {
this.sessions[sid].sendTerminate(reason || (!this.sessions[sid].active()) ? 'cancel' : null, text);
this.sessions[sid].terminate();
}
delete this.jid2session[this.sessions[sid].peerjid];
delete this.sessions[sid];
}
},
// Used to terminate a session when an unavailable presence is received.
terminateByJid: function (jid) {
if (this.jid2session.hasOwnProperty(jid)) {
var sess = this.jid2session[jid];
if (sess) {
sess.terminate();
console.log('peer went away silently', jid);
delete this.sessions[sess.sid];
delete this.jid2session[jid];
$(document).trigger('callterminated.jingle',
[sess.sid, jid], 'gone');
}
}
},
terminateRemoteByJid: function (jid, reason) {
if (this.jid2session.hasOwnProperty(jid)) {
var sess = this.jid2session[jid];
if (sess) {
sess.sendTerminate(reason || (!sess.active()) ? 'kick' : null);
sess.terminate();
console.log('terminate peer with jid', sess.sid, jid);
delete this.sessions[sess.sid];
delete this.jid2session[jid];
$(document).trigger('callterminated.jingle',
[sess.sid, jid, 'kicked']);
}
}
},
getStunAndTurnCredentials: function () {
// get stun and turn configuration from server via xep-0215
// uses time-limited credentials as described in
// http://tools.ietf.org/html/draft-uberti-behave-turn-rest-00
//
// see https://code.google.com/p/prosody-modules/source/browse/mod_turncredentials/mod_turncredentials.lua
// for a prosody module which implements this
//
// currently, this doesn't work with updateIce and therefore credentials with a long
// validity have to be fetched before creating the peerconnection
// TODO: implement refresh via updateIce as described in
// https://code.google.com/p/webrtc/issues/detail?id=1650
var self = this;
this.connection.sendIQ(
$iq({type: 'get', to: this.connection.domain})
.c('services', {xmlns: 'urn:xmpp:extdisco:1'}).c('service', {host: 'turn.' + this.connection.domain}),
function (res) {
var iceservers = [];
$(res).find('>services>service').each(function (idx, el) {
el = $(el);
var dict = {};
var type = el.attr('type');
switch (type) {
case 'stun':
dict.url = 'stun:' + el.attr('host');
if (el.attr('port')) {
dict.url += ':' + el.attr('port');
}
iceservers.push(dict);
break;
case 'turn':
case 'turns':
dict.url = type + ':';
if (el.attr('username')) { // https://code.google.com/p/webrtc/issues/detail?id=1508
if (navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./) && parseInt(navigator.userAgent.match(/Chrom(e|ium)\/([0-9]+)\./)[2], 10) < 28) {
dict.url += el.attr('username') + '@';
} else {
dict.username = el.attr('username'); // only works in M28
}
}
dict.url += el.attr('host');
if (el.attr('port') && el.attr('port') != '3478') {
dict.url += ':' + el.attr('port');
}
if (el.attr('transport') && el.attr('transport') != 'udp') {
dict.url += '?transport=' + el.attr('transport');
}
if (el.attr('password')) {
dict.credential = el.attr('password');
}
iceservers.push(dict);
break;
}
});
self.ice_config.iceServers = iceservers;
},
function (err) {
console.warn('getting turn credentials failed', err);
console.warn('is mod_turncredentials or similar installed?');
}
);
// implement push?
},
/**
* Returns the data saved in 'updateLog' in a format to be logged.
*/
getLog: function () {
var data = {};
var self = this;
Object.keys(this.sessions).forEach(function (sid) {
var session = self.sessions[sid];
if (session.peerconnection && session.peerconnection.updateLog) {
// FIXME: should probably be a .dump call
data["jingle_" + session.sid] = {
updateLog: session.peerconnection.updateLog,
stats: session.peerconnection.stats,
url: window.location.href
};
}
});
return data;
}
});
};
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