学步园

TcP:

服务器端：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()

客户端：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)
    data=tcpCliSock.recv(BUFSIZ)
    if not data:
        break
    print data

tcpCliSock.close()    

**先运行服务器端，再运行客户端

UDP:

调用函数不一样，其他大同小异。