def on_udp_msg_recv(*args):
     global data, control, status
     (msg, address) = sock.recvfrom(32)
     msg = msg.strip() 
     rdata, rcontrol, rstatus = [int(x, 16) for x in msg.split(":")]
     if rdata != 0xFFFF:
         data = rdata
     update_leds()
     sock.sendto("0:0:0\n")
     return True