Python网络编程UDP服务器与客服端简单例子

#!/usr/bin/env python
# -*- coding:UTF-8 -*-

from socket import *
from time import ctime

HOST = ‘127.0.0.1‘
PORT = 21567
BUFSIZE = 1024

ADDR = (HOST,PORT)

udpSerSock = socket(AF_INET, SOCK_DGRAM)
udpSerSock.bind(ADDR)

while True:
    print ‘wating for message...‘
    data, addr = udpSerSock.recvfrom(BUFSIZE)
    udpSerSock.sendto(‘[%s] %s‘%(ctime(),data),addr)
    print ‘...received from and retuned to:‘,addr

udpSerSock.close()

#!/usr/bin/env python

from socket import *

HOST = ‘localhost‘
PORT = 21567
BUFSIZE = 1024

ADDR = (HOST, PORT)

udpCliSock = socket(AF_INET, SOCK_DGRAM)

while True:
    data = raw_input(‘>‘)
    if not data:
        break
    udpCliSock.sendto(data,ADDR)
    data,ADDR = udpCliSock.recvfrom(BUFSIZE)
    if not data:
        break
    print data

udpCliSock.close()