【python】网络编程-UDP协议套接字

#!/usr/bin/env python

from socket import *
from time import ctime

HOST = ‘‘
PORT = 21567
BUFSIZ = 1024
ADDR = (HOST, PORT)

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

while True:
    print ‘waiting for message...‘
    data, addr = udpSerSock.recvfrom(BUFSIZ)##监听并接受客户端发的消息
    udpSerSock.sendto(‘[%s] %s‘ % (    ##给消息加上时间戳并返回给客户端
        ctime(), data), addr)
    print ‘...received from and returned to:‘, addr

udpSerSock.close()

#!/usr/bin/env python

from socket import *

HOST = ‘localhost‘
PORT = 21567
BUFSIZ = 1024
ADDR = (HOST, PORT)

udpCliSock = socket(AF_INET, SOCK_DGRAM)

while True:
    data = raw_input(‘> ‘)
    if not data:
        break
    udpCliSock.sendto(data, ADDR) ##给服务器发送数据
    data, ADDR = udpCliSock.recvfrom(BUFSIZ)  ##客户端接受带时间戳的数据
    if not data:
        break
    print data

udpCliSock.close()