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Fixes issues with starting the streams after the conference has been joined.

dev1
hristoterezov 10 years ago
parent
c70893042a
commit
86a2e4257a
7 changed files with 144 additions and 30 deletions
Split View Show Diff Stats
  1. 19
    8
      doc/example/example.js
  2. 1
    1
      doc/example/index.html
  3. 56
    10
      lib-jitsi-meet.js
  4. 2
    0
      modules/RTC/JitsiLocalTrack.js
  5. 5
    3
      modules/RTC/RTC.js
  6. 9
    2
      modules/xmpp/JingleSessionPC.js
  7. 52
    6
      modules/xmpp/LocalSSRCReplacement.js

+ 19
- 8
doc/example/example.js View File 

@@ -1,3 +1,13 @@
1 
+//var options = {
2 
+//    hosts: {
3 
+//        domain: "prod-us-east-1-app-xmpp1.internal.meet.hipchat.ninja",
4 
+//        focus: "focus.prod-us-east-1-app-xmpp1.internal.meet.hipchat.ninja",
5 
+//        muc: "conference.prod-us-east-1-app-xmpp1.internal.meet.hipchat.ninja", // FIXME: use XEP-0030
6 
+//    },
7 
+//    bosh: "https://xmpp1-meet.hipchat.me/http-bind", // FIXME: use xep-0156 for that
8 
+//    clientNode: "http://prod-us-east-1-app-xmpp1.internal.meet.hipchat.ninja/jitsimeet" // The name of client node advertised in XEP-0115 'c' stanza
9 
+//};
10 
+
1 11 
 var options = {
2 12 
     hosts: {
3 13 
         domain: 'hristo.jitsi.net',
 
@@ -5,8 +15,8 @@ var options = {
5 15 
         bridge: 'jitsi-videobridge.hristo.jitsi.net', // FIXME: use XEP-0030
6 16 
     },
7 17 
     bosh: '//hristo.jitsi.net/http-bind', // FIXME: use xep-0156 for that
8 
-    clientNode: 'http://jitsi.org/jitsimeet' // The name of client node advertised in XEP-0115 'c' stanza
9 
-};
18 
+    clientNode: 'http://jitsi.org/jitsimeet', // The name of client node advertised in XEP-0115 'c' stanza
19 
+}
10 20
11 21 
 var confOptions = {
12 22 
     openSctp: true
 
@@ -22,6 +32,10 @@ function onLocalTracks(tracks)
22 32 
     console.log(tracks);
23 33 
     tracks[0].attach($("#localAudio"));
24 34 
     tracks[1].attach($("#localVideo"));
35 
+    for(var i = 0; i < localTracks.length; i++)
36 
+    {
37 
+        localTracks[i].start();
38 
+    }
25 39 
 }
26 40
27 41 
 /**
 
@@ -46,10 +60,8 @@ function onRemoteTrack(track) {
46 60 
  * That function is executed when the conference is joined
47 61 
  */
48 62 
 function onConferenceJoined () {
49 
-    for(var i = 0; i < localTracks.length; i++)
50 
-    {
51 
-        localTracks[i].start();
52 
-    }
63 
+    console.log("conference joined!");
64 
+    room.createLocalTracks().then(onLocalTracks);
53 65 
 }
54 66
55 67 
 function onUserLeft(id) {
 
@@ -64,8 +76,7 @@ function onUserLeft(id) {
64 76 
  * That function is called when connection is established successfully
65 77 
  */
66 78 
 function onConnectionSuccess(){
67 
-    room = connection.initJitsiConference("conference1", confOptions);
68 
-    room.createLocalTracks().then(onLocalTracks);
79 
+    room = connection.initJitsiConference("conference2", confOptions);
69 80 
     room.on(JitsiMeetJS.events.conference.TRACK_ADDED, onRemoteTrack);
70 81 
     room.on(JitsiMeetJS.events.conference.TRACK_REMOVED, function () {
71 82 
         console.debug("track removed!!!");

+ 1
- 1
doc/example/index.html View File 

@@ -12,6 +12,6 @@
12 12 
 </head>
13 13 
 <body>
14 14 
     <video id="localVideo" autoplay="true"></video>
15 
-    <audio id="localAudio" autoplay="true"></audio>
15 
+    <!--<audio id="localAudio" autoplay="true" muted="true"></audio>-->
16 16 
 </body>
17 17 
 </html>

+ 56
- 10
lib-jitsi-meet.js View File 

@@ -26,6 +26,7 @@ function JitsiConference(options) {
26 26 
     this.rtc = new RTC(this.room, options);
27 27 
     setupListeners(this);
28 28 
     this.participants = {};
29 
+    this.lastActiveSpeaker = null;
29 30 
 }
30 31
31 32 
 /**
 
@@ -220,7 +221,11 @@ function setupListeners(conference) {
220 221 
 //        conference.eventEmitter.emit(JitsiConferenceEvents.CONFERENCE_LEFT);
221 222 
 //    });
222 223 
     conference.rtc.addListener(RTCEvents.DOMINANTSPEAKER_CHANGED, function (id) {
223 
-        conference.eventEmitter.emit(JitsiConferenceEvents.ACTIVE_SPEAKER_CHANGED, id);
224 
+        if(conference.lastActiveSpeaker !== id && conference.room
225 
+            && conference.room.myroomjid !== id) {
226 
+            conference.lastActiveSpeaker = id;
227 
+            conference.eventEmitter.emit(JitsiConferenceEvents.ACTIVE_SPEAKER_CHANGED, id);
228 
+        }
224 229 
     });
225 230
226 231 
     conference.rtc.addListener(RTCEvents.LASTN_CHANGED, function (oldValue, newValue) {
 
@@ -845,6 +850,7 @@ function JitsiLocalTrack(RTC, stream, eventEmitter, videoType, isGUMStream)
845 850 
     this.videoType = videoType;
846 851 
     this.isGUMStream = true;
847 852 
     this.dontFireRemoveEvent = false;
853 
+    this.isStarted = false;
848 854 
     var self = this;
849 855 
     if(isGUMStream === false)
850 856 
         this.isGUMStream = isGUMStream;
 
@@ -947,6 +953,7 @@ JitsiLocalTrack.prototype.stop = function () {
947 953 
  * NOTE: Works for local tracks only.
948 954 
  */
949 955 
 JitsiLocalTrack.prototype.start = function() {
956 
+    this.isStarted = true;
950 957 
     this.rtc.room.addStream(this.stream, function () {});
951 958 
 }
952 959 
 
@@ -1220,7 +1227,6 @@ var DesktopSharingEventTypes
1220 1227 
 var MediaStreamType = require("../../service/RTC/MediaStreamTypes");
1221 1228 
 var StreamEventTypes = require("../../service/RTC/StreamEventTypes.js");
1222 1229 
 var RTCEvents = require("../../service/RTC/RTCEvents.js");
1223 
-var XMPPEvents = require("../../service/xmpp/XMPPEvents");
1224 1230 
 var desktopsharing = require("../desktopsharing/desktopsharing");
1225 1231
1226 1232 
 function getMediaStreamUsage()
 
@@ -1279,7 +1285,6 @@ function RTC(room, options) {
1279 1285 
         if(self.remoteStreams[from])
1280 1286 
             self.remoteStreams[from][JitsiTrack.AUDIO].setMute(values.value == "true");
1281 1287 
     });
1282 
-
1283 1288 
 }
1284 1289
1285 1290 
 /**
 
@@ -1298,7 +1303,11 @@ RTC.prototype.obtainAudioAndVideoPermissions = function (options, dontCreateJits
1298 1303 
 RTC.prototype.onIncommingCall = function(event) {
1299 1304 
     if(this.options.config.openSctp)
1300 1305 
         this.dataChannels = new DataChannels(event.peerconnection, this.eventEmitter);
1301 
-    this.room.addLocalStreams(this.localStreams);
1306 
+    for(var i = 0; i < this.localStreams.length; i++)
1307 
+        if(this.localStreams[i].isStarted)
1308 
+        {
1309 
+            this.localStreams[i].start();
1310 
+        }
1302 1311 
 }
1303 1312
1304 1313 
 RTC.prototype.selectedEndpoint = function (id) {
 
@@ -1565,7 +1574,7 @@ RTC.prototype.setDeviceAvailability = function (devices) {
1565 1574
1566 1575 
 module.exports = RTC;
1567 1576
1568 
-},{"../../service/RTC/MediaStreamTypes":70,"../../service/RTC/RTCEvents.js":71,"../../service/RTC/StreamEventTypes.js":73,"../../service/desktopsharing/DesktopSharingEventTypes":75,"../../service/xmpp/XMPPEvents":76,"../desktopsharing/desktopsharing":17,"./DataChannels":9,"./JitsiLocalTrack.js":10,"./JitsiRemoteTrack.js":11,"./JitsiTrack":12,"./RTCBrowserType":14,"./RTCUtils.js":15,"events":77}],14:[function(require,module,exports){
1577 
+},{"../../service/RTC/MediaStreamTypes":70,"../../service/RTC/RTCEvents.js":71,"../../service/RTC/StreamEventTypes.js":73,"../../service/desktopsharing/DesktopSharingEventTypes":75,"../desktopsharing/desktopsharing":17,"./DataChannels":9,"./JitsiLocalTrack.js":10,"./JitsiRemoteTrack.js":11,"./JitsiTrack":12,"./RTCBrowserType":14,"./RTCUtils.js":15,"events":77}],14:[function(require,module,exports){
1569 1578
1570 1579 
 var currentBrowser;
1571 1580 
 
@@ -4903,6 +4912,7 @@ function JingleSessionPC(me, sid, connection, service) {
4903 4912 
     this.removessrc = [];
4904 4913 
     this.pendingop = null;
4905 4914 
     this.switchstreams = false;
4915 
+    this.addingStreams = false;
4906 4916
4907 4917 
     this.wait = true;
4908 4918 
     this.localStreamsSSRC = null;
 
@@ -4915,6 +4925,7 @@ function JingleSessionPC(me, sid, connection, service) {
4915 4925 
      * by the application logic.
4916 4926 
      */
4917 4927 
     this.videoMuteByUser = false;
4928 
+
4918 4929 
     this.modifySourcesQueue = async.queue(this._modifySources.bind(this), 1);
4919 4930 
     // We start with the queue paused. We resume it when the signaling state is
4920 4931 
     // stable and the ice connection state is connected.
 
@@ -5024,6 +5035,8 @@ JingleSessionPC.prototype.addLocalStreams = function (localStreams) {
5024 5035 
     var self = this;
5025 5036 
 // add any local and relayed stream
5026 5037 
     localStreams.forEach(function(stream) {
5038 
+        if(!stream.isStarted())
5039 
+            return;
5027 5040 
         self.peerconnection.addStream(stream.getOriginalStream());
5028 5041 
     });
5029 5042 
 }
 
@@ -5831,7 +5844,8 @@ JingleSessionPC.prototype._modifySources = function (successCallback, queueCallb
5831 5844 
     var self = this;
5832 5845
5833 5846 
     if (this.peerconnection.signalingState == 'closed') return;
5834 
-    if (!(this.addssrc.length || this.removessrc.length || this.pendingop !== null || this.switchstreams)){
5847 
+    if (!(this.addssrc.length || this.removessrc.length || this.pendingop !== null
5848 
+        || this.switchstreams || this.addingStreams)){
5835 5849 
         // There is nothing to do since scheduled job might have been executed by another succeeding call
5836 5850 
         this.setLocalDescription();
5837 5851 
         if(successCallback){
 
@@ -5841,8 +5855,9 @@ JingleSessionPC.prototype._modifySources = function (successCallback, queueCallb
5841 5855 
         return;
5842 5856 
     }
5843 5857
5844 
-    // Reset switch streams flag
5858 
+    // Reset switch streams flags
5845 5859 
     this.switchstreams = false;
5860 
+    this.addingStreams = false;
5846 5861
5847 5862 
     var sdp = new SDP(this.peerconnection.remoteDescription.sdp);
5848 5863 
 
@@ -5991,6 +6006,7 @@ JingleSessionPC.prototype.addStream = function (stream, callback) {
5991 6006 
         return;
5992 6007 
     }
5993 6008
6009 
+    this.addingStreams = true;
5994 6010 
     this.modifySourcesQueue.push(function() {
5995 6011 
         console.log('modify sources done');
5996 6012 
 
@@ -6393,6 +6409,7 @@ var RTCBrowserType = require('../RTC/RTCBrowserType');
6393 6409 
  */
6394 6410 
 var isEnabled = !RTCBrowserType.isFirefox();
6395 6411
6412 
+
6396 6413 
 /**
6397 6414 
  * Stored SSRC of local video stream.
6398 6415 
  */
 
@@ -6403,7 +6420,7 @@ var localVideoSSRC;
6403 6420 
  * This is in order to tell Chrome what SSRC should be used in RTCP requests
6404 6421 
  * instead of 1.
6405 6422 
  */
6406 
-var localRecvOnlySSRC;
6423 
+var localRecvOnlySSRC, localRecvOnlyMSID, localRecvOnlyMSLabel, localRecvOnlyLabel;
6407 6424
6408 6425 
 /**
6409 6426 
  * cname for <tt>localRecvOnlySSRC</tt>
 
@@ -6475,6 +6492,22 @@ var storeLocalVideoSSRC = function (jingleIq) {
6475 6492 
     });
6476 6493 
 };
6477 6494
6495 
+function rangeRandomHex(min, max)
6496 
+{
6497 
+    return Math.floor(Math.random() * (max - min) + min).toString(16);
6498 
+}
6499 
+
6500 
+var random4digitsHex = rangeRandomHex.bind(null, 4096, 65535);
6501 
+var random8digitsHex = rangeRandomHex.bind(null, 268435456, 4294967295);
6502 
+var random12digitsHex = rangeRandomHex.bind(null, 17592186044416, 281474976710655);
6503 
+
6504 
+function generateLabel() {
6505 
+    //4294967295 - ffffffff
6506 
+    //65535 - ffff
6507 
+    //281474976710655 - ffffffffffff
6508 
+    return random8digitsHex() + "-" + random4digitsHex() + "-" + random4digitsHex() + "-" + random4digitsHex() + "-" + random12digitsHex();
6509 
+}
6510 
+
6478 6511 
 /**
6479 6512 
  * Generates new SSRC for local video recvonly stream.
6480 6513 
  * FIXME what about eventual SSRC collision ?
 
@@ -6485,7 +6518,12 @@ function generateRecvonlySSRC() {
6485 6518 
         Math.random().toString(10).substring(2, 11);
6486 6519 
     localRecvOnlyCName =
6487 6520 
         Math.random().toString(36).substring(2);
6488 
-    console.info(
6521 
+    localRecvOnlyMSLabel = generateLabel();
6522 
+    localRecvOnlyLabel = generateLabel();
6523 
+    localRecvOnlyMSID = localRecvOnlyMSLabel + " " + localRecvOnlyLabel;
6524 
+
6525 
+
6526 
+        console.info(
6489 6527 
         "Generated local recvonly SSRC: " + localRecvOnlySSRC +
6490 6528 
         ", cname: " + localRecvOnlyCName);
6491 6529 
 }
 
@@ -6556,12 +6594,19 @@ var LocalSSRCReplacement = {
6556 6594 
                 if (!localRecvOnlySSRC) {
6557 6595 
                     generateRecvonlySSRC();
6558 6596 
                 }
6597 
+                localVideoSSRC = localRecvOnlySSRC;
6559 6598
6560 6599 
                 console.info('No SSRC in video recvonly stream' +
6561 6600 
                              ' - adding SSRC: ' + localRecvOnlySSRC);
6562 6601
6563 6602 
                 sdp.media[1] += 'a=ssrc:' + localRecvOnlySSRC +
6564 
-                                ' cname:' + localRecvOnlyCName + '\r\n';
6603 
+                                ' cname:' + localRecvOnlyCName + '\r\n' +
6604 
+                                'a=ssrc:' + localRecvOnlySSRC +
6605 
+                                ' msid:' + localRecvOnlyMSID + '\r\n' +
6606 
+                                'a=ssrc:' + localRecvOnlySSRC +
6607 
+                                ' mslabel:' + localRecvOnlyMSLabel + '\r\n' +
6608 
+                                'a=ssrc:' + localRecvOnlySSRC +
6609 
+                                ' label:' + localRecvOnlyLabel + '\r\n';
6565 6610
6566 6611 
                 localDescription.sdp = sdp.session + sdp.media.join('');
6567 6612 
             }
 
@@ -7799,6 +7844,7 @@ function TraceablePeerConnection(ice_config, constraints, session) {
7799 7844
7800 7845 
     // override as desired
7801 7846 
     this.trace = function (what, info) {
7847 
+        console.debug(what + " - " + info);
7802 7848 
         /*console.warn('WTRACE', what, info);
7803 7849 
         if (info && RTCBrowserType.isIExplorer()) {
7804 7850 
             if (info.length > 1024) {

+ 2
- 0
modules/RTC/JitsiLocalTrack.js View File 

@@ -14,6 +14,7 @@ function JitsiLocalTrack(RTC, stream, eventEmitter, videoType, isGUMStream)
14 14 
     this.videoType = videoType;
15 15 
     this.isGUMStream = true;
16 16 
     this.dontFireRemoveEvent = false;
17 
+    this.isStarted = false;
17 18 
     var self = this;
18 19 
     if(isGUMStream === false)
19 20 
         this.isGUMStream = isGUMStream;
 
@@ -116,6 +117,7 @@ JitsiLocalTrack.prototype.stop = function () {
116 117 
  * NOTE: Works for local tracks only.
117 118 
  */
118 119 
 JitsiLocalTrack.prototype.start = function() {
120 
+    this.isStarted = true;
119 121 
     this.rtc.room.addStream(this.stream, function () {});
120 122 
 }
121 123

+ 5
- 3
modules/RTC/RTC.js View File 

@@ -11,7 +11,6 @@ var DesktopSharingEventTypes
11 11 
 var MediaStreamType = require("../../service/RTC/MediaStreamTypes");
12 12 
 var StreamEventTypes = require("../../service/RTC/StreamEventTypes.js");
13 13 
 var RTCEvents = require("../../service/RTC/RTCEvents.js");
14 
-var XMPPEvents = require("../../service/xmpp/XMPPEvents");
15 14 
 var desktopsharing = require("../desktopsharing/desktopsharing");
16 15
17 16 
 function getMediaStreamUsage()
 
@@ -70,7 +69,6 @@ function RTC(room, options) {
70 69 
         if(self.remoteStreams[from])
71 70 
             self.remoteStreams[from][JitsiTrack.AUDIO].setMute(values.value == "true");
72 71 
     });
73 
-
74 72 
 }
75 73
76 74 
 /**
 
@@ -89,7 +87,11 @@ RTC.prototype.obtainAudioAndVideoPermissions = function (options, dontCreateJits
89 87 
 RTC.prototype.onIncommingCall = function(event) {
90 88 
     if(this.options.config.openSctp)
91 89 
         this.dataChannels = new DataChannels(event.peerconnection, this.eventEmitter);
92 
-    this.room.addLocalStreams(this.localStreams);
90 
+    for(var i = 0; i < this.localStreams.length; i++)
91 
+        if(this.localStreams[i].isStarted)
92 
+        {
93 
+            this.localStreams[i].start();
94 
+        }
93 95 
 }
94 96
95 97 
 RTC.prototype.selectedEndpoint = function (id) {

+ 9
- 2
modules/xmpp/JingleSessionPC.js View File 

@@ -37,6 +37,7 @@ function JingleSessionPC(me, sid, connection, service) {
37 37 
     this.removessrc = [];
38 38 
     this.pendingop = null;
39 39 
     this.switchstreams = false;
40 
+    this.addingStreams = false;
40 41
41 42 
     this.wait = true;
42 43 
     this.localStreamsSSRC = null;
 
@@ -49,6 +50,7 @@ function JingleSessionPC(me, sid, connection, service) {
49 50 
      * by the application logic.
50 51 
      */
51 52 
     this.videoMuteByUser = false;
53 
+
52 54 
     this.modifySourcesQueue = async.queue(this._modifySources.bind(this), 1);
53 55 
     // We start with the queue paused. We resume it when the signaling state is
54 56 
     // stable and the ice connection state is connected.
 
@@ -158,6 +160,8 @@ JingleSessionPC.prototype.addLocalStreams = function (localStreams) {
158 160 
     var self = this;
159 161 
 // add any local and relayed stream
160 162 
     localStreams.forEach(function(stream) {
163 
+        if(!stream.isStarted())
164 
+            return;
161 165 
         self.peerconnection.addStream(stream.getOriginalStream());
162 166 
     });
163 167 
 }
 
@@ -965,7 +969,8 @@ JingleSessionPC.prototype._modifySources = function (successCallback, queueCallb
965 969 
     var self = this;
966 970
967 971 
     if (this.peerconnection.signalingState == 'closed') return;
968 
-    if (!(this.addssrc.length || this.removessrc.length || this.pendingop !== null || this.switchstreams)){
972 
+    if (!(this.addssrc.length || this.removessrc.length || this.pendingop !== null
973 
+        || this.switchstreams || this.addingStreams)){
969 974 
         // There is nothing to do since scheduled job might have been executed by another succeeding call
970 975 
         this.setLocalDescription();
971 976 
         if(successCallback){
 
@@ -975,8 +980,9 @@ JingleSessionPC.prototype._modifySources = function (successCallback, queueCallb
975 980 
         return;
976 981 
     }
977 982
978 
-    // Reset switch streams flag
983 
+    // Reset switch streams flags
979 984 
     this.switchstreams = false;
985 
+    this.addingStreams = false;
980 986
981 987 
     var sdp = new SDP(this.peerconnection.remoteDescription.sdp);
982 988 
 
@@ -1125,6 +1131,7 @@ JingleSessionPC.prototype.addStream = function (stream, callback) {
1125 1131 
         return;
1126 1132 
     }
1127 1133
1134 
+    this.addingStreams = true;
1128 1135 
     this.modifySourcesQueue.push(function() {
1129 1136 
         console.log('modify sources done');
1130 1137

+ 52
- 6
modules/xmpp/LocalSSRCReplacement.js View File 

@@ -41,17 +41,18 @@ var RTCBrowserType = require('../RTC/RTCBrowserType');
41 41 
  */
42 42 
 var isEnabled = !RTCBrowserType.isFirefox();
43 43
44 
+
44 45 
 /**
45 46 
  * Stored SSRC of local video stream.
46 47 
  */
47 48 
 var localVideoSSRC;
48 49
49 50 
 /**
50 
- * SSRC used for recvonly video stream when we have no local camera.
51 
+ * SSRC, msid, mslabel, label used for recvonly video stream when we have no local camera.
51 52 
  * This is in order to tell Chrome what SSRC should be used in RTCP requests
52 53 
  * instead of 1.
53 54 
  */
54 
-var localRecvOnlySSRC;
55 
+var localRecvOnlySSRC, localRecvOnlyMSID, localRecvOnlyMSLabel, localRecvOnlyLabel;
55 56
56 57 
 /**
57 58 
  * cname for <tt>localRecvOnlySSRC</tt>
 
@@ -124,16 +125,54 @@ var storeLocalVideoSSRC = function (jingleIq) {
124 125 
 };
125 126
126 127 
 /**
127 
- * Generates new SSRC for local video recvonly stream.
128 
+ * Generates random hex number within the range [min, max]
129 
+ * @param max the maximum value for the generated number
130 
+ * @param min the minimum value for the generated number
131 
+ * @returns random hex number
132 
+ */
133 
+function rangeRandomHex(min, max)
134 
+{
135 
+    return Math.floor(Math.random() * (max - min) + min).toString(16);
136 
+}
137 
+
138 
+/**
139 
+ * Generates hex number with length 4
140 
+ */
141 
+var random4digitsHex = rangeRandomHex.bind(null, 4096, 65535);
142 
+
143 
+/**
144 
+ * Generates hex number with length 8
145 
+ */
146 
+var random8digitsHex = rangeRandomHex.bind(null, 268435456, 4294967295);
147 
+
148 
+/**
149 
+ * Generates hex number with length 12
150 
+ */
151 
+var random12digitsHex = rangeRandomHex.bind(null, 17592186044416, 281474976710655);
152 
+
153 
+/**
154 
+ * Generates new label/mslabel attribute
155 
+ * @returns {string} label/mslabel attribute
156 
+ */
157 
+function generateLabel() {
158 
+    return random8digitsHex() + "-" + random4digitsHex() + "-" + random4digitsHex() + "-" + random4digitsHex() + "-" + random12digitsHex();
159 
+}
160 
+
161 
+/**
162 
+ * Generates new SSRC, CNAME, mslabel, label and msid for local video recvonly stream.
128 163 
  * FIXME what about eventual SSRC collision ?
129 164 
  */
130 165 
 function generateRecvonlySSRC() {
131 
-    //
132 166 
     localRecvOnlySSRC =
133 167 
         Math.random().toString(10).substring(2, 11);
134 168 
     localRecvOnlyCName =
135 169 
         Math.random().toString(36).substring(2);
136 
-    console.info(
170 
+    localRecvOnlyMSLabel = generateLabel();
171 
+    localRecvOnlyLabel = generateLabel();
172 
+    localRecvOnlyMSID = localRecvOnlyMSLabel + " " + localRecvOnlyLabel;
173 
+
174 
+
175 
+        console.info(
137 176 
         "Generated local recvonly SSRC: " + localRecvOnlySSRC +
138 177 
         ", cname: " + localRecvOnlyCName);
139 178 
 }
 
@@ -204,12 +243,19 @@ var LocalSSRCReplacement = {
204 243 
                 if (!localRecvOnlySSRC) {
205 244 
                     generateRecvonlySSRC();
206 245 
                 }
246 
+                localVideoSSRC = localRecvOnlySSRC;
207 247
208 248 
                 console.info('No SSRC in video recvonly stream' +
209 249 
                              ' - adding SSRC: ' + localRecvOnlySSRC);
210 250
211 251 
                 sdp.media[1] += 'a=ssrc:' + localRecvOnlySSRC +
212 
-                                ' cname:' + localRecvOnlyCName + '\r\n';
252 
+                                ' cname:' + localRecvOnlyCName + '\r\n' +
253 
+                                'a=ssrc:' + localRecvOnlySSRC +
254 
+                                ' msid:' + localRecvOnlyMSID + '\r\n' +
255 
+                                'a=ssrc:' + localRecvOnlySSRC +
256 
+                                ' mslabel:' + localRecvOnlyMSLabel + '\r\n' +
257 
+                                'a=ssrc:' + localRecvOnlySSRC +
258 
+                                ' label:' + localRecvOnlyLabel + '\r\n';
213 259
214 260 
                 localDescription.sdp = sdp.session + sdp.media.join('');
215 261 
             }

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