title: WebRTC - how to set always to use TURN server?
body: <p>In the standard specs it says you can set ENUM value to "relay" : <a href="http://dev.w3.org/2011/webrtc/editor/webrtc.html#idl-def-RTCIceServer" rel="nofollow">http://dev.w3.org/2011/webrtc/editor/webrtc.html#idl-def-RTCIceServer</a></p>
  
  <p>but, How do you set the enum to "relay" using Javascript of following?
  <code>if (tmp.indexOf("typ relay ") &gt;= 0) {</code> never occur in my test. how can i force it to enum "relay"?</p>
  
  <p>or</p>
  
  <p>is it a BUG? <a href="https://code.google.com/p/webrtc/issues/detail?id=1179" rel="nofollow">https://code.google.com/p/webrtc/issues/detail?id=1179</a></p>
  
  <p>Any idea.</p>
  
  <pre><code>function createPeerConnection() {
    try {
      // Create an RTCPeerConnection via the polyfill (adapter.js).
      pc = new RTCPeerConnection(pcConfig, pcConstraints);
      pc.onicecandidate = onIceCandidate;
      console.log('Created RTCPeerConnnection with:\n' +
                  '  config: \'' + JSON.stringify(pcConfig) + '\';\n' +
                  '  constraints: \'' + JSON.stringify(pcConstraints) + '\'.');
    } catch (e) {
      console.log('Failed to create PeerConnection, exception: ' + e.message);
      alert('Cannot create RTCPeerConnection object; \
            WebRTC is not supported by this browser.');
        return;
    }
    pc.onaddstream = onRemoteStreamAdded;
    pc.onremovestream = onRemoteStreamRemoved;
    pc.onsignalingstatechange = onSignalingStateChanged;
    pc.oniceconnectionstatechange = onIceConnectionStateChanged;
  }
  
  function onIceCandidate(event) {
    if (event.candidate) {
      var tmp = event.candidate.candidate;
      if (tmp.indexOf("typ relay ") &gt;= 0) {
        /////////////////////////////////////////// NEVER happens
        sendMessage({type: 'candidate',
                     label: event.candidate.sdpMLineIndex,
                     id: event.candidate.sdpMid,        
                     candidate: tmp}); 
        noteIceCandidate("Local", iceCandidateType(tmp));   
  
      }    
    } else {
      console.log('End of candidates.');
    }
  }
  </code></pre>