python 创建TCP服务器、客户端程序


TCP服务器程序（tsTserv.py）：

from socket import *
from time import ctime

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

tcpSerSock = socket(AF_INET, SOCK_STREAM)
tcpSerSock.bind(ADDR)
tcpSerSock.listen(5)

while True:
    print 'waiting for connection...'
    tcpCliSock, addr = tcpSerSock.accept()
    print '...connected from:', addr

    while True:
        data = tcpCliSock.recv(BUFSIZ)
        if not data:
            break
        tcpCliSock.send('[%s] %s' %(ctime(), data))
    tcpCliSock.close()

tcpSerSock.close()

TCP客户端程序（tsTclnt.py）：

from socket import *

HOST = 'localhost'
PORT = 21567
BUFSIZ = 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)
    data1 = tcpCliSock.recv(BUFSIZ)
    if not data1:
        break
    print data1

tcpCliSock.close()

运行说明：先运行服务器程序，作用类似于打开服务器保持等待客户请求，再运行客户端程序。
运行界面如下：
服务器端：

D:\code\ex>python tsTserv.py
waiting for connection...
...connected from: ('127.0.0.1', 2883)
waiting for connection...
...connected from: ('127.0.0.1', 2885)
waiting for connection...
...connected from: ('127.0.0.1', 2889)
waiting for connection...
...connected from: ('127.0.0.1', 2891)
waiting for connection...
...connected from: ('127.0.0.1', 2892)
waiting for connection...
...connected from: ('127.0.0.1', 2893)
waiting for connection...

客户端：

D:\code\ex>python tsTclnt.py
> 1
[Thu Feb 02 15:52:21 2012] 1
> 2
[Thu Feb 02 15:52:22 2012] 2
> 3
[Thu Feb 02 15:52:22 2012] 3
> 5
[Thu Feb 02 15:52:23 2012] 5
> 6
[Thu Feb 02 15:52:24 2012] 6
>

D:\code\ex>

参考《Python核心编程》。