与python tcp编程对比见 http://blog.csdn.net/aspnet_lyc/article/details/39854569

c++ udp/tcp 编程见 http://blog.csdn.net/aspnet_lyc/article/details/38946915

                                    http://blog.csdn.net/aspnet_lyc/article/details/34444111

server

import socketPORT      = 9999BIND_ADDR = ''MAXLINE   = 1024buf      = []listenfd = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)listenfd.bind((BIND_ADDR, PORT))while True:	buf, client_addr = listenfd.recvfrom(MAXLINE)	print 'recieve data from %s: %s' % (client_addr, buf)	buf = 'Hello, this is server'	listenfd.sendto(buf, client_addr)

client

import socketPORT     = 9999SADDR    = '127.0.0.1'MAXLINE  = 1024buf     = 'Hello, this is client'sockfd = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)sockfd.sendto(buf, (SADDR, PORT))buf,server_addr = sockfd.recvfrom(MAXLINE)print 'recieve data from server: %s' % buf

python udp编程实例