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()