require 'socket'
begin 
  # create the UDPSocket object
  sock = UDPSocket.new
  
  # bind it to 0.0.0.0 at the given port
  port = 55443
  sock.bind "0.0.0.0", port
  puts "UDP Socket bound to port #{port} and listening."

  # while true loop to keep listening for new packets
  while true do
    data, sender = sock.recvfrom 1024
    puts "Recieved #{data.size} bytes from #{sender[3]}"
    puts "Echoing data back to #{sender[3]}"
    sock.send data, 0, sender[3], sender[1]
  end  

  rescue SystemExit, Interrupt => e
    puts
    puts "Okay, fine. I'll stop listening."
    sock.close
end