     @pc_config = {"iceServers":
           [
               {url:'stun:stun.l.google.com:19302'},
-             # {url:'stun:137.135.63.9'},
+              {url:'stun:waturn.cloudapp.net'},
               {
                   url: 'turn:waturn.cloudapp.net:3478?transport=tcp',
                   credential: 'walkaboutpass',

        )
      , (error) ->
        console.log("Error sending offer: "+error)
      ,constraints)
    peer_connection

  mergeConstraints: (cons1, cons2) ->

    console.log('config',config)
    if (config.sendOffer)
      console.log("Creating RTC offer to " + peer_id)
      #offerConstraints = {
      #  "optional": [
      #    { "OfferToReceiveAudio": true },
      #    { "OfferToReceiveVideo": true },
      #  ]
      #}
      #constraints = @mergeConstraints(offerConstraints, sdpConstraints)

      peer_connection.createOffer((local_description) =>
        console.log("Local offer description is: ", local_description)
