title: Relay candidates are not generated in Google Chrome
body: <p>For testing if I am getting the relay candidates, I am using this page: <a href="http://googlechrome.github.io/webrtc/samples/web/content/peerconnection/trickle-ice/" rel="nofollow">http://googlechrome.github.io/webrtc/samples/web/content/peerconnection/trickle-ice/</a>. To test from chrome 40, I provided my turn url and credentials there. After clicking gather candidates I can see no relay candidates. Doing the same test from firefox 36, I found the relay candidates. What could be the possible problem ? To further investigate the issue, I looked into wireshark log. What I found is, from firefox the stun request format includes-   </p>
  
  <pre><code>STUN 146 Allocate Request UDP lifetime: 3600 user: lazy realm:  with nonce
  </code></pre>
  
  <p>But from chrome, this is slightly different- </p>
  
  <pre><code>STUN 70 Allocate Request UDP
  </code></pre>
  
  <p>It seems the request code is not same. Moreover, request from chrome doesn't include the lifetime, user and realm property. </p>