#服务端程序

import socketserver

class  TcpHandler(socketserver.BaseRequestHandler):

    def handle(self):

        while True:

            try:

                self.data = self.request.recv().strip()

                print(self.client_address[])

                print(self.data)

                self.request.send(self.data.upper())

            except ConnectionResetError as e:

                print("连接断开")

                break

if __name__ =="__main__":

    HOST,PORT ="localhost",

    server = socketserver.ThreadingTCPServer((HOST,PORT),TcpHandler)

    server.serve_forever()