title: Android webrtc app doesn't work on different network
body: <p>I have developed an android native app which shares screen with the web dashboard using MediaProjection and WebRTC.</p>
  
  <p>The problem is the app works fine if the android app and the web dashboard is in the same network.</p>
  
  <p>As soon as they are in the different network app didn't work.</p>
  
  <p>I am using Web sockets as a Signaling channel.</p>
  
  <p>The stun server used : <code>stun:stun.l.google.com:19302</code></p>
  
  <p>WebRTC library : <code>io.pristine:libjingle:11139@aar</code></p>
  
  <p>Any idea what could be the issue?</p>