server端

#!/usr/bin/env python

import socket

import time

host=''

port=99999

s = socket.socket(socket.AF_INET,socket.SOCK_STREAM)

s.bind((host,port))

s.listen(2)

while 1:

conn,addr = s.accept()

#---------------

print 'got connection from:',addr

while 1:

data = conn.recv(4096)

print 'get data',data

if not data: #判断是否接受到值

time.sleep(1,5)

continue

conn.sendall(data.upper())

print 'asdfasf',data

conn.close()

接受TCP连接并返回（conn,address）,其中conn是新的套接字对象，可以用来接收和发送数据。address是连接客户端的地址。

client端

#!/usr/bin/env python

import socket

import time

h = '192.168.5.55'

p = 99999

s=socket.socket(socket.AF_INET,socket.SOCK_STREAM)

s.connect((h,p))

while 1:

s.send('hello word')

received_data = s.recv(1024)

time.sleep(1.5)

print 'safasfasf',received_data

s.close()