Ruby UDP Broadcast

require "socket"

require "timeout"

port = ARGV[1] || 'echo'

sock = UDPSocket.open

sock.setsockopt(Socket::SOL_SOCKET, Socket::SO_BROADCAST, true)

begin

  sock.send('message', 0, '<broadcast>', port)

  timeout(5) {

    loop do

      msg, addr = sock.recvfrom(20)

      p addr

    end

  }

rescue TiemoutError

  

end

sock.close