学习笔记-- Python网络编程

TCP编程-- server

import socket, threading, time

def dealClient(sock, addr):
    print('Accept new connection from %s:%s...' % addr)
    sock.send(b'Hello, I am server!')  # 给client端发送数据
    while True:
        data = sock.recv(1024)  # 接收client发过来的数据
        time.sleep(1)
        if not data or data.decode('utf-8') == 'exit':
            break
        print('-->> %s !' % data.decode('utf-8'))
        sock.send(('Loop_Msg: %s !' % data.decode('utf-8')).encode())   # 发送数据给client
    sock.close()
    print('Connection from %s:%s closed' % addr)

if __name__ == '__main__':
    # 创建socket并绑定IP
    s = socket.socket()
    s.bind(('127.0.0.1', 9999))
    s.listen()   # 启用监听
    print('Waiting for connection...')
    while True:
        sock, addr = s.accept()  # 接收一个新的连接
        t = threading.Thread(target = dealClient, args = (sock, addr))  #创建新的线程来处理TCP连接
        t.start()

TCP编程-- client

import socket

s = socket.socket()
s.connect(('127.0.0.1', 9999))  # 建立连接
print('-->>' + s.recv(1024).decode('utf-8')) # 接收消息
s.send(b'Hello, I am a client')
print('-->>' + s.recv(1024).decode('utf-8'))
s.send(b'exit')  # 发送消息
s.close()

代码摘自 Python爬虫开发与项目实战--  机械工业出版社