add: debian file, perform various fixes

ui/lib/call.dart

@@ -38,15 +38,16 @@ class CallState extends State<Call> {
     logger.i("Init remote renderer");
     await _remoteRenderer.initialize();
     logger.i("Creating session");
-    await _createSesson();
+    await _createSession();
   }
 
-  _createSesson() async {
+  _createSession() async {
     var callOptions = CallOptions(metadata: {
       'Authorization': await widget.sessionService.getAuthToken(widget.home)
     });
 
     var cancelCreate = Completer();
+    var sendIceCandidates = Completer();
 
     var clientSession = await widget.client.createSession(
         pb.CreateSessionRequest(
@@ -73,6 +74,8 @@ class CallState extends State<Call> {
     };
 
     peerConnection.onIceCandidate = (candidate) async {
+      await sendIceCandidates.future;
+      logger.i("Sending ICE candidate");
       if (candidate.candidate == null) {
         await widget.client.createIceMessage(
             CreateIceMessageRequest(
@@ -99,16 +102,15 @@ class CallState extends State<Call> {
     };
 
     peerConnection.onIceConnectionState = (state) {
-      statusLine = "Ice state now $state";
+      statusLine = "$state";
       setState(() {});
-      logger.i("Ice state now $state");
 
       switch (state) {
-        case RTCIceConnectionState.RTCIceConnectionStateClosed:
-        case RTCIceConnectionState.RTCIceConnectionStateDisconnected:
+        //case RTCIceConnectionState.RTCIceConnectionStateClosed:
+        //case RTCIceConnectionState.RTCIceConnectionStateDisconnected:
         case RTCIceConnectionState.RTCIceConnectionStateFailed:
           cancelCreate.complete(CallCancelled());
-          _connect();
+        //_connect();
         default:
         // do nothing
       }
@@ -136,7 +138,6 @@ class CallState extends State<Call> {
     var offer = await peerConnection.createOffer();
     await peerConnection.setLocalDescription(offer);
     // Send offer through signaling server
-    logger.i("Offer is $offer");
     await widget.client.createIceMessage(
         pb.CreateIceMessageRequest(
           sessionIdentifier: clientSession.id,
@@ -149,6 +150,20 @@ class CallState extends State<Call> {
         ),
         options: callOptions);
 
+    // Expect back a response
+    var someResponse = await Future.any([
+      widget.client.popIceMessage(
+          pb.PopIceMessageRequest(sessionIdentifier: clientSession.id),
+          options: callOptions),
+      cancelCreate.future,
+    ]);
+    var resp = someResponse as pb.IceMessage;
+    var session = resp.session;
+    await peerConnection
+        .setRemoteDescription(RTCSessionDescription(session.sdp, "answer"));
+
+    sendIceCandidates.complete();
+
     // Get candidates from remote
     while (true) {
       var someResponse = await Future.any([
@@ -168,10 +183,6 @@ class CallState extends State<Call> {
             resp.candidate.sdpLineIndex));
       } else if (resp.hasNoMoreCandidates()) {
         logger.i("No more candidates from remote");
-      } else if (resp.hasSession()) {
-        var session = resp.session;
-        await peerConnection
-            .setRemoteDescription(RTCSessionDescription(session.sdp, "answer"));
         break;
       }
     }
@@ -183,7 +194,7 @@ class CallState extends State<Call> {
       Text(widget.cameraID.id),
       Text(statusLine),
       SizedBox(
-          height: 480,
+          height: 320,
           child: _ready
               ? RTCVideoView(_remoteRenderer)
               : const Text("Loading...")),