#!/usr/bin/python

from socket import *

from time import ctime

class UDPSocketServer():

def __init__(self):

self.host = 'localhost'

self.port = 21567

self.buffsize = 1024

self.addr = (self.host, self.port)

self.s_udp_socket = socket(AF_INET, SOCK_DGRAM)

self.s_udp_socket.bind(self.addr)

self.daytime_port = getservbyname('daytime','udp')

print 'self.daytime_port = ', self.daytime_port

def run(self):

try:

while True:

print 'Waiting for data...'

data, addr = self.s_udp_socket.recvfrom(self.buffsize)

if not data:

break

print 'Received from addr',addr,data

self.s_udp_socket.sendto('[%s] %s' % (ctime(), data), addr)

self.s_udp_socket.close()

except KeyboardInterrupt, e:

print 'CTRL+C end the server'

self.s_udp_socket.close()

udp_socket = UDPSocketServer()

udp_socket.run()