python 应用socket模块TCP半双工通信

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# TCP服务器 __author__ = 'magicpwn' import socket import threading bind_ip = '0.0.0.0' bind_port = 9999 # 构造服务器套接字 server = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # 套接字绑定主机、端口 server.bind((bind_ip, bind_port)) # 开始监听，监听最大连接数数量为5 server.listen(5) # 线程任务，处理请求，参数（客户端套接字） def handle_client(client_socket):     while True:         # 接受信息         request = client_socket.recv(1024)         print " Received: %s" % request         ask = raw_input()         # 发送信息         client_socket.send(ask)     client_socket.close() # 主循环等待连接 while True:     # 接受连接，和连接终端的信息     client, addr = server.accept()     print " Accepted Connecton from: %s:%d" % (addr[0], addr[1])     client_handler = threading.Thread(target=handle_client,args=(client,))     client_handler.start()

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# TCP客户端 # -*- coding:utf-8 -*- __author__ = 'magicpwn' import socket # tcp客户端 target_host = '127.0.0.1' target_port = 9999 # AF_INET是标准IPv4地址或主机名，SOCK_STREAM表示是TCP的方式 client = socket.socket(socket.AF_INET, socket.SOCK_STREAM) # 建立连接 client.connect((target_host, target_port)) # 发送数据 while True:     ask = raw_input()     client.send(ask)     # 接收返回的数据，参数是buffersize.     response = client.recv(4096)     print response