python 版本 2.7

server 端

# -*- encoding: utf-8 -*-

import SocketServer

class MyServer(SocketServer.BaseRequestHandler):
    def handle(self):
        conn = self.request
        conn.sendall('骚年，你好!')

        while True:
            recv_data = conn.recv(1024)
            if recv_data == 'q':
                break
            conn.sendall(recv_data.upper())

if __name__ == '__main__':
    server = SocketServer.ThreadingTCPServer(('127.0.0.1',9999),MyServer)
    server.serve_forever()

client 端

# -*- encoding: utf-8 -*-

import socket

conn = socket.socket()

conn.connect(('127.0.0.1',9999))
welcome = conn.recv(1024)
print(welcome)
while True:
    data = raw_input(">>")
    conn.sendall(data)
    if data == 'q':
        break
    print(conn.recv(1024))