Moved from offerConstraints to offerOptions which follows latest spec. This fixes offer creation in Firefox >=43.

static/js/mediastream/peercall.js

@@ -34,9 +34,8 @@ define(['jquery', 'underscore', 'mediastream/utils', 'mediastream/peerconnection
 		this.mediaConstraints = $.extend(true, {}, this.webrtc.settings.mediaConstraints);
 		this.pcConfig = $.extend(true, {}, this.webrtc.settings.pcConfig);
 		this.pcConstraints = $.extend(true, {}, this.webrtc.settings.pcConstraints);
-		this.sdpConstraints = $.extend(true, {}, this.webrtc.settings.sdpConstraints);
-		this.offerConstraints = $.extend(true, {}, this.webrtc.settings.offerConstraints);
 		this.sdpParams = $.extend(true, {}, this.webrtc.settings.sdpParams);
+		this.offerOptions = $.extend(true, {}, this.webrtc.settings.offerOptions);
 
 		this.peerconnection = null;
 		this.datachannels = {};
@@ -69,17 +68,17 @@ define(['jquery', 'underscore', 'mediastream/utils', 'mediastream/peerconnection
 
 	PeerCall.prototype.createOffer = function(cb) {
 
-		var constraints = utils.mergeConstraints(this.offerConstraints, this.sdpConstraints);
-		console.log('Creating offer with constraints: \n' +
-			'  \'' + JSON.stringify(constraints, null, '\t') + '\'.', this.negotiationNeeded);
-		this.peerconnection.createOffer(_.bind(this.onCreateAnswerOffer, this, cb), _.bind(this.onErrorAnswerOffer, this), constraints);
+		var options = this.offerOptions;
+		console.log('Creating offer with options: \n' +
+			'  \'' + JSON.stringify(options, null, '\t') + '\'.', this.negotiationNeeded);
+		this.peerconnection.createOffer(_.bind(this.onCreateAnswerOffer, this, cb), _.bind(this.onErrorAnswerOffer, this), options);
 
 	};
 
 	PeerCall.prototype.createAnswer = function(cb) {
 
 		console.log("Creating answer.", this.negotiationNeeded);
-		this.peerconnection.createAnswer(_.bind(this.onCreateAnswerOffer, this, cb), _.bind(this.onErrorAnswerOffer, this), this.peerconnection.sdpConstraints);
+		this.peerconnection.createAnswer(_.bind(this.onCreateAnswerOffer, this, cb), _.bind(this.onErrorAnswerOffer, this));
 
 	};
 
@@ -151,7 +150,7 @@ define(['jquery', 'underscore', 'mediastream/utils', 'mediastream/peerconnection
 						streams++;
 					}
 				}, this));
-				if (streams === 0 && this.sdpConstraints.mandatory && (this.sdpConstraints.mandatory.OfferToReceiveAudio || this.sdpConstraints.mandatory.OfferToReceiveVideo)) {
+				if (streams === 0 && (this.offerOptions.offerToReceiveAudio || this.offerOptions.offerToReceiveVideo)) {
 					// We assume that we will eventually receive a stream, so we trigger the event to let the UI prepare for it.
 					this.e.triggerHandler("remoteStreamAdded", [null, this]);
 				}

static/js/mediastream/peerscreenshare.js

@@ -51,9 +51,6 @@ define(['jquery', 'underscore', 'mediastream/peercall', 'mediastream/tokens'], f
 			audio: false,
 			video: false
 		}
-		this.sdpConstraints.mandatory.OfferToReceiveAudio = false;
-		this.sdpConstraints.mandatory.OfferToReceiveVideo = true;
-
 		// SCTP is supported from Chrome M31.
 		// No need to pass DTLS constraint as it is on by default in Chrome M31.
 		// For SCTP, reliable and ordered is true by default.
@@ -61,6 +58,8 @@ define(['jquery', 'underscore', 'mediastream/peercall', 'mediastream/tokens'], f
 			mandatory: {},
 			optional: []
 		};
+		this.offerOptions.offerToReceiveAudio = false;
+		this.offerOptions.offerToReceiveVideo = true;
 
 		// Inject token into sessiondescription and ice candidate data.
 		this.e.on("sessiondescription icecandidate", _.bind(function(event, data) {

static/js/mediastream/peerxfer.js

@@ -49,10 +49,6 @@ define(['jquery', 'underscore', 'mediastream/peercall', 'mediastream/tokens', 'w
 			audio: false,
 			video: false
 		};
-		this.sdpConstraints = {
-			mandatory: {},
-			optional: []
-		};
 		// SCTP is supported from Chrome M31.
 		// No need to pass DTLS constraint as it is on by default in Chrome M31.
 		// For SCTP, reliable and ordered is true by default.
@@ -60,6 +56,7 @@ define(['jquery', 'underscore', 'mediastream/peercall', 'mediastream/tokens', 'w
 			mandatory: {},
 			optional: []
 		};
+		this.offerOptions = {};
 
 		// Inject token into sessiondescription and ice candidate data.
 		this.e.on("sessiondescription icecandidate", _.bind(function(event, data) {

static/js/mediastream/webrtc.js

@@ -80,18 +80,6 @@ function($, _, PeerCall, PeerConference, PeerXfer, PeerScreenshare, UserMedia, u
 				mandatory: {},
 				optional: []
 			},
-			// Set up audio and video regardless of what devices are present.
-			sdpConstraints: {
-				mandatory: {
-					OfferToReceiveAudio: true,
-					OfferToReceiveVideo: true
-				},
-				optional: []
-			},
-			offerConstraints: {
-				mandatory: {},
-				optional: []
-			},
 			screensharing: {
 				mediaConstraints: {
 					audio: false,
@@ -115,6 +103,11 @@ function($, _, PeerCall, PeerConference, PeerXfer, PeerScreenshare, UserMedia, u
 				//videoRecvBitrate: ,
 				//videoRecvCodec
 			},
+			// Set up audio and video regardless of what devices are present.
+			offerOptions: {
+				offerToReceiveAudio: true,
+				offerToReceiveVideo: true
+			},
 			renegotiation: true
 		};