- the local port that this UDP socket will bind to. {Object} method_to_call_when_packet_received_and_buffer_is_empty
...
- when the socket receives one or more packages, it calls this method once. The method will no longer be called even if new packages are received - until a call to UDPProvider#js_getReceivedPacket() returns null. So you should consume all available packets before you expect this method to be called again.