====== onDataReceived() ======
wrtc.onDataReceived() is an event function called when data has been received on a [[ixnx:wrtc:js:data_channel|data channel]].

You can use this event to take care of incoming data through a data channel.

===== Arguments =====
wrtc.onDataReceived(callobj, data)
  * callobj - call object data has been received from. You can use this object to send answers back, see example below.
  * data - the data (usually a string) received through the data channel

===== Return value =====
Ignored.

===== Example =====
If sending client has sent "PING" using
  if call.is("dataChannelSupport")
    call.adv.sendData("PING");
you will receive a wrtc.onDataReceived() call with "PING" in it's data argument. Then you can respond with "PONG":
  wrtc.onDataReceived = function(callobj, data) {
    if (data == "PING")
      callobj.adv.sendData("PONG");
  }

===== See also =====
[[ixnx:wrtc:js:data_channel|data channels]]

[[ixnx:wrtc:js:api:call:adv.senddata|call.adv.sendData()]]