Enhance RTCPeerconnection SDP error handling. Thanks @ibc for reporting.

Author: jmillan

src/MediaSession.js

@@ -49,8 +49,8 @@ JsSIP.MediaSession.prototype = {
     }
 
     /** @private */
-    function onGetUserMediaFailure() {
-      onFailure();
+    function onGetUserMediaFailure(e) {
+      onFailure(e);
     }
 
     this.getUserMedia(mediaType, onGetUserMediaSuccess, onGetUserMediaFailure);
@@ -82,16 +82,22 @@ JsSIP.MediaSession.prototype = {
       // add stream to peerConnection
       self.peerConnection.addStream(stream);
 
-      self.peerConnection.setRemoteDescription(new window.RTCSessionDescription({type:'offer', sdp:sdp}));
-
-      // Set local description and start Ice.
-      self.peerConnection.createAnswer(function(sessionDescription){
-        self.peerConnection.setLocalDescription(sessionDescription);
-      });
+      self.peerConnection.setRemoteDescription(
+        new window.RTCSessionDescription({type:'offer', sdp:sdp}),
+        function() {
+          self.peerConnection.createAnswer(
+            function(sessionDescription){
+              self.peerConnection.setLocalDescription(sessionDescription);
+            },
+            onSdpFailure
+          );
+        },
+        onSdpFailure
+      );
     }
 
-    function onGetUserMediaFailure() {
-      onMediaFailure();
+    function onGetUserMediaFailure(e) {
+      onMediaFailure(e);
     }
 
     self.getUserMedia({'audio':true, 'video':true}, onGetUserMediaSuccess, onGetUserMediaFailure);
@@ -185,8 +191,8 @@ JsSIP.MediaSession.prototype = {
       onSuccess(stream);
     }
 
-    function getFailure() {
-      onFailure();
+    function getFailure(e) {
+      onFailure(e);
     }
 
     // Get User Media
@@ -206,12 +212,8 @@ JsSIP.MediaSession.prototype = {
     if (type === 'offer') {
       console.log(JsSIP.c.LOG_MEDIA_SESSION +'re-Invite received');
     } else if (type === 'answer') {
-      try {
-        this.peerConnection.setRemoteDescription(new window.RTCSessionDescription({type:'answer', sdp:sdp}));
-        onSuccess();
-      } catch (e) {
-        onFailure(e);
-      }
+      this.peerConnection.setRemoteDescription(
+        new window.RTCSessionDescription({type:'answer', sdp:sdp}), onSuccess, onFailure);
     }
   }
 };

src/Session.js

@@ -373,7 +373,7 @@ JsSIP.Session.prototype.receiveInitialRequest = function(ua, request) {
     * @param {HTMLVideoElement} remoteView
     */
     this.answer = function(selfView, remoteView) {
-      var offer, onMediaSuccess, onMediaFailure, onSdpFailure;
+      var offer, onSuccess, onMediaFailure, onSdpFailure;
 
       // Check UA Status
       JsSIP.utils.checkUAStatus(this.ua);
@@ -385,7 +385,7 @@ JsSIP.Session.prototype.receiveInitialRequest = function(ua, request) {
 
       offer = request.body;
 
-      onMediaSuccess = function() {
+      onSuccess = function() {
         var sdp = session.mediaSession.peerConnection.localDescription.sdp;
 
         if(!session.createConfirmedDialog(request, 'UAS')) {
@@ -435,7 +435,7 @@ JsSIP.Session.prototype.receiveInitialRequest = function(ua, request) {
 
       //Initialize Media Session
       session.mediaSession = new JsSIP.MediaSession(session, selfView, remoteView);
-      session.mediaSession.startCallee(onMediaSuccess, onMediaFailure, onSdpFailure, offer);
+      session.mediaSession.startCallee(onSuccess, onMediaFailure, onSdpFailure, offer);
     };
 
     // Fire 'call' event callback
@@ -526,7 +526,7 @@ JsSIP.Session.prototype.receiveResponse = function(response) {
           return;
         }
 
-        this.acceptAndTerminate(response,'SIP ;cause= 400 ;text= "Missing session description"');
+        this.acceptAndTerminate(response,'SIP ;cause=400 ;text= "Missing session description"');
         this.failed('remote', response, JsSIP.c.causes.BAD_MEDIA_DESCRIPTION);
 
         break;
@@ -561,7 +561,7 @@ JsSIP.Session.prototype.receiveResponse = function(response) {
            */
           function(e) {
             console.warn(e);
-            session.acceptAndTerminate(response, 'SIP ;cause= 488 ;text= "Not Acceptable Here"');
+            session.acceptAndTerminate(response, 'SIP ;cause=488 ;text="Not Acceptable Here"');
             session.failed('remote', response, JsSIP.c.causes.BAD_MEDIA_DESCRIPTION);
           }
         );
@@ -947,7 +947,7 @@ JsSIP.Session.prototype.sendInitialRequest = function(mediaType) {
     request_sender.send();
   }
 
-  function onMediaFailure(fail,e) {
+  function onMediaFailure(e) {
     if (self.status !== JsSIP.c.SESSION_TERMINATED) {
       console.log(JsSIP.c.LOG_CLIENT_INVITE_SESSION +'Media Access denied');
       self.failed('local', null, JsSIP.c.causes.USER_DENIED_MEDIA_ACCESS);