import socket, time, sys s = socket.fromfd(sys.stdin.fileno(), socket.AF_INET, socket.SOCK_DGRAM) message, address = s.recvfrom(8192) s.connect(address) for i in range(10): s.send("Reply %d: %s" % (i + 1, message)) time.sleep(2) s.send("OK, I'm done sending replies.\n")