Converts ssltcp candidate to tcp one on FF.

modules/xmpp/SDPUtil.js

         line += ' ';
         line += cand.getAttribute('component');
         line += ' ';
-        line += cand.getAttribute('protocol'); //.toUpperCase(); // chrome M23 doesn't like this
+
+        var protocol = cand.getAttribute('protocol');
+        // use tcp candidates for FF
+        if (RTCBrowserType.isFirefox() && protocol.toLowerCase() == 'ssltcp') {
+            protocol = 'tcp';
+        }
+
         line += ' ';
         line += cand.getAttribute('priority');
         line += ' ';
                 }
                 break;
         }
-        if (cand.getAttribute('protocol').toLowerCase() == 'tcp') {
+        if (protocol.toLowerCase() == 'tcp') {
             line += 'tcptype';
             line += ' ';
             line += cand.getAttribute('tcptype');

package.json

   "dependencies": {
     "events": "*",
     "pako": "*",
-    "sdp-interop": "0.1.10",
-    "sdp-transform": "1.4.1",
-    "sdp-simulcast": "0.1.2",
+    "sdp-interop": "0.1.11",
+    "sdp-transform": "1.5.*",
+    "sdp-simulcast": "0.1.3",
     "async": "0.9.0",
     "retry": "0.6.1",
     "jssha": "1.5.0",