实现服务端可以对多个客户端提供服务

服务端：

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import socket

phone = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
phone.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR,1)    # 端口复用
phone.bind(('127.0.0.1', 8090))
phone.listen(10)
while True: # 连接循环
    connt , client = phone.accept()
    print('starting ....')
    print(client)

    while True: # 通信循环
        try:
            data = connt.recv(1024)
            if not data :continue   # 适用于Linux 操作系统
            print( data.decode('utf-8'))

            connt.send(data.upper())
        except  ConnectionResetError:       # 适用于windows操作系统
            break

    connt.close()
phone.close()

客户端：

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import socket

phone1 = socket.socket(socket.AF_INET,socket.SOCK_STREAM)
phone1.connect(('127.0.0.1',8090))
while True:
    msg = input('>>>:').strip()
    if not msg:continue
    phone1.send(msg.encode('utf-8'))
    data1 =phone1.recv(1024)
    print(data1.decode('utf-8'))

phone1.close()