Check If TURN server is active

webrtc ICE Test.html

<script>
function checkTURNServer(turnConfig, timeout){ 

return new Promise(function(resolve, reject){

  setTimeout(function(){
      if(promiseResolved) return;
      resolve(false);
      promiseResolved = true;
  }, timeout || 5000);

  var promiseResolved = false
    , myPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection   //compatibility for firefox and chrome
    , pc = new myPeerConnection({iceServers:[turnConfig]})
    , noop = function(){};
  pc.createDataChannel("");    //create a bogus data channel
  pc.createOffer(function(sdp){
    if(sdp.sdp.indexOf('typ relay') > -1){ // sometimes sdp contains the ice candidates...
      promiseResolved = true;
      resolve(true);
    }
    pc.setLocalDescription(sdp, noop, noop);
  }, noop);    // create offer and set local description
  pc.onicecandidate = function(ice){  //listen for candidate events
    if(promiseResolved || !ice || !ice.candidate || !ice.candidate.candidate || !(ice.candidate.candidate.indexOf('typ relay')>-1))  return;
    promiseResolved = true;
    resolve(true);
  };
});   
}

checkTURNServer({
  url: 'turn:yourServerAddress:PortIfAny',
  username: 'yourUsername',
  credential: 'yourPassword'
}).then(function(bool){
  console.log('is my TURN server active? ', bool? 'yes':'no');
}).catch(console.error.bind(console));
</script>