python创建tcp服务端和客户端

1.tcp服务端server

 from socket import *
 from time import ctime

 HOST = ''
 PORT = 9999
 BUFSIZ = 1024
 ADDR = (HOST, PORT)

 tcpSerSock = socket(AF_INET, SOCK_STREAM)   #创建套接字
 tcpSerSock.bind(ADDR)   #绑定IP和端口
 tcpSerSock.listen(5)    #监听端口，最多5人排队

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

     while True:
         data = tcpCliSock.recv(BUFSIZ)
         if not data:
             break
         content = '[%s] %s' % (bytes(ctime(), "utf-8"), data)
         print(data)
         print(type(content))
         tcpCliSock.send(content.encode("utf-8"))

     tcpCliSock.close()

 tcpSerSock.close()

2.tcp客户端client

 from socket import *

 HOST = '127.0.0.1'  # or 'localhost'
 PORT = 9999
 BUFSIZ = 1024
 ADDR = (HOST, PORT)

 tcpCliSock = socket(AF_INET, SOCK_STREAM)
 tcpCliSock.connect(ADDR)

 while True:
     data = input('> ')
     if not data:
         break

     tcpCliSock.send(data.encode("utf-8"))
     data = tcpCliSock.recv(BUFSIZ)
     if not data:
         break
     print(data.decode("utf-8"))

 tcpCliSock.close()