python学习 网络编程(二) udp连接...

这里定义了一个UDPServer和UDPClient。这里创建一个TCP服务程序，服务器会把客户发送过来的字符串加上一个时间戳，然后显示,并返回客户端。

UDPServer.py

#!/usr/bin/env python from socket import * from time import ctime #创建一个UDP客户端 HOST = '' PORT = 20001 BUFSIZE = 1024 ADDR = (HOST, PORT) udpSerSock = socket(AF_INET, SOCK_DGRAM) udpSerSockbind(ADDR) while True: print 'waiting for message...' data, addr = udpSerSock.recvfrom(BUFSIZE) udpSerSock.sendto('[%s] %s' % (ctime(), data), addr) print'received from %s >> %s' % (addr, data) udpSerSock.close() 

UDPClient.py

#!/usr/bin/env python from socket import * HOST = 'localhost' PORT = 20001 BUFSIZE = 1024 ADDR = (HOST, PORT) udpClientSock = socket(AF_INET, SOCK_DGRAM) while True: data = raw_input('Enter the message you want to send >') if not data: break udpClientSock.sendto(data, ADDR) data, ADDR = udpClientSock.recvfrom(BUFSIZE) if not data: break print data udpClientSock.close()