socket编程，练习

服务端

from socket import *
from time import ctime

HOST = ''　　　　　　#此处为空代表可以绑定所有有效地址
PORT = 21567　　　　
BUFSIZE = 1024
ADDR = (HOST,PORT)
tcpSerSocket = socket(AF_INET,SOCK_STREAM)
tcpSerSocket.bind(ADDR)
tcpSerSocket.listen(5)　　　　　　#最多可以有5个连接同时进入
while True:
    print 'waiting for connection...'
    tcpCliSock,addr = tcpSerSocket.accept()
    print '...connected from:',addr

    while True:
        data = tcpCliSock.recv(BUFSIZE)
        print data
        if not data:
            break
        tcpCliSock.send('[%s] %s'%(ctime(),data))
        # tcpCliSock.close()　　　　　　　　#如果接收完，就断开的话，下次再发送就会报错，书本上有问题
tcpSerSocket.close()

　　客户端

#!/usr/bin/env python
#coding:utf-8
__author__ = 'ferraborghini'
from socket import *
HOST = 'localhost'
PORT = 21567
BUFSIZE = 1024
ADDR = (HOST,PORT)
tcpCliSock = socket(AF_INET,SOCK_STREAM)
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()