基于socketserver模块实现并发的套接字（tcp、udp）

tcp
服务端：
import socketserver

class MyHandler(socketserver.BaseRequestHandler):
    def handle(self):
        #通信循环
        while True:
            # print(self.client_address)
            # print(self.request) #self.request = conn

            try:
                data=self.request.recv(1024)
                if len(data) == 0:break
                self.request.send(data.upper())
            except ConnectionResetError:
                break

if __name__ == '__main__':
    s=socketserver.ThreadingTCPServer(('127.0.0.1',8080),MyHandler,bind_and_activate=True)

    s.serve_forever()  # 代表连接循环
    # 循环建立连接，每建立一个连接就会启动一个线程（服务员）+调用Myhanlder类产生一个对象，调用该对象下的handle方法，专门与刚刚建立好的连接做通信循环

客户端1：

import socket

phone=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
phone.connect(('127.0.0.1',8080)) # 指定服务端ip和端口

while True:
    # msg=input('>>: ').strip() #msg=''
    msg = 'client33333'  # msg=''
    if len(msg) == 0:continue
    phone.send(msg.encode('utf-8'))
    data=phone.recv(1024)
    print(data)

phone.close()

客户端2：同客户端1
...
udp
服务端：

import socketserver

class MyHandler(socketserver.BaseRequestHandler):
    def handle(self):
        #通信循环
        # print(self.client_address)
        # print(self.request)

        data=self.request[0]
        print('客户消息',data)
        self.request[1].sendto(data.upper(),self.client_address)

if __name__ == '__main__':
    s=socketserver.ThreadingUDPServer(('127.0.0.1',8080),MyHandler)
    s.serve_forever()

客户端：

import socket

client=socket.socket(socket.AF_INET,socket.SOCK_DGRAM) #数据报协议-》udp

while True:
    # msg=input('>>: ').strip() #msg=''
    msg='client444444'

    client.sendto(msg.encode('utf-8'),('127.0.0.1',8080))
    data,server_addr=client.recvfrom(1024)
    print(data)

client.close()