Properly send URL parameters in all requests

webrtc/examples/androidapp/src/org/appspot/apprtc/WebSocketRTCClient.java

Index: webrtc/examples/androidapp/src/org/appspot/apprtc/WebSocketRTCClient.java
diff --git a/webrtc/examples/androidapp/src/org/appspot/apprtc/WebSocketRTCClient.java b/webrtc/examples/androidapp/src/org/appspot/apprtc/WebSocketRTCClient.java
index 5e8380ae0c14025d4f82cfabb7a2088bece389bc..3bd707aecf5efb711bf51b1857abe9d8fc093041 100644
--- a/webrtc/examples/androidapp/src/org/appspot/apprtc/WebSocketRTCClient.java
+++ b/webrtc/examples/androidapp/src/org/appspot/apprtc/WebSocketRTCClient.java
@@ -140,14 +140,22 @@ public class WebSocketRTCClient implements AppRTCClient, WebSocketChannelEvents
 
   private String getMessageUrl(
       RoomConnectionParameters connectionParameters, SignalingParameters signalingParameters) {
-    return connectionParameters.roomUrl + "/" + ROOM_MESSAGE + "/" + connectionParameters.roomId
-        + "/" + signalingParameters.clientId;
+    String url = connectionParameters.roomUrl + "/" + ROOM_MESSAGE + "/"
+        + connectionParameters.roomId + "/" + signalingParameters.clientId;
+    if (connectionParameters.urlParameters != null) {

[kjellander_webrtc, 2017/05/02 11:52:56]

I think the code duplication pattern calls for introducing a private helper
function to call instead.

[oprypin_webrtc, 2017/05/02 12:15:03]

Done.

+      url += "?" + connectionParameters.urlParameters;
+    }
+    return url;
   }
 
   private String getLeaveUrl(
       RoomConnectionParameters connectionParameters, SignalingParameters signalingParameters) {
-    return connectionParameters.roomUrl + "/" + ROOM_LEAVE + "/" + connectionParameters.roomId + "/"
-        + signalingParameters.clientId;
+    String url = connectionParameters.roomUrl + "/" + ROOM_LEAVE + "/"
+        + connectionParameters.roomId + "/" + signalingParameters.clientId;
+    if (connectionParameters.urlParameters != null) {
+      url += "?" + connectionParameters.urlParameters;
+    }
+    return url;
   }
 
   // Callback issued when room parameters are extracted. Runs on local