Add turn server debug function

src/client/debug/index.js

@@ -0,0 +1,37 @@
+const iceServers = require('./iceServers.js');
+
+function checkTURNServer(turnConfig, timeout){
+
+  console.log('checking turn server', turnConfig);
+
+  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(iceServers[0], 10000)
+.then(console.log.bind(console))
+.catch(console.error.bind(console));

src/client/index.js

@@ -1,8 +1,4 @@
 'use strict';
-if (!window.__REACT_DEVTOOLS_GLOBAL_HOOK__) {
-  window.__REACT_DEVTOOLS_GLOBAL_HOOK__ = {};
-}
-
 const App = require('./components/app.js');
 const React = require('react');
 const ReactDom = require('react-dom');