1 #!/usr/bin/python 2  3 import time, socket, threading 4  5 # thread handle function 6 def tcplink(sock, addr): 7     print ‘Accept new connection from %s:%s...‘ % addr 8     sock.send(‘Welcome!‘) 9     while True:10         data = http://www.mamicode.com/sock.recv(1024)11         time.sleep(1)12         if data =http://www.mamicode.com/= ‘exit‘ or not data:13             break14         sock.send(‘Hello, %s!‘ % data)15     sock.close()16     print ‘Connection from %s:%s closed.‘ % addr17 18 # create socket object19 s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)20 # listen port21 s.bind((‘127.0.0.1‘, 9999))22 # start listen23 s.listen(5)24 # print prompt25 print ‘Waiting for connection...‘26 27 while True:28     # accept a new connection29     sock, addr = s.accept()30     # create new thread to handle tcp connection31     t = threading.Thread(target=tcplink, args=(sock, addr))32     t.start()33 34     

 1 #!/usr/bin/python 2  3 # import module 4 import socket 5  6 # create TCP object 7 s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) 8 # connect sina 9 s.connect((‘127.0.0.1‘, 9999))10 # receive welcome11 print s.recv(1024)12 13 for data in [‘zjw‘, ‘ygl‘, ‘lele‘]:14     # send data15     s.send(data)16     print s.recv(1024)17 while True:18     data = http://www.mamicode.com/1