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  • python-网络编程(2)

 客户端：

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#!/use/bin/env python
 
from socket import *
 
HOST = 'localhost'
PORT = 21567
BUFSIZE = 1024
ADDR = (HOST, PORT)
 
tcpCliSock = socket(AF_INET)
tcpCliSock.connect(ADDR)
 
while True:
    data = raw_input('> ')
    if not data:
        break
    tcpCliSock.send(data)
    data = tcpCliSock.recv(BUFSIZE)
    if not data:
        break
    print data
 
tcpCliSock.close()

　　

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2.4.UDP服务器和客户端

服务器：

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#!/use/bin/env python
 
from socket import *
import time
 
HOST = ''
PORT = 21567
BUFSIZE = 1024
ADDR = (HOST, PORT)
 
udpSerSock = socket(AF_INET, SOCK_DGRAM)
udpSerSock.bind(ADDR)
 
while True:
    print('waittinng for meaasge...')
    data, addr = udpSerSock.recvfrom(BUFSIZE)
    lotime = time.strftime("%Y-%m-%d %H:%M:%S", time.localtime())
    udpSerSock.sendto(b'[%s] %s' %(lotime, data), addr)
    print('...received from and returned to: ', addr)
    
udpSerSock.close()

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