我只会用threading,我菜

#服务端
import socket
import threading
# import multiprocessing

server=socket.socket(socket.AF_INET,socket.SOCK_STREAM)#面向网络的,面向连接的套接字
server.bind(('127.0.0.1',9527))
server.listen(5)

def action(conn):
    while True:
        data=conn.recv(1024)
        print(data)
        conn.send(data)

if __name__ == '__main__':
        while True:
            conn,addr=server.accept()
            print(addr)
            print(f'{addr}成功连接')
            p=threading.Thread(target=action,args=(conn,))
            p.start()

#客户端
import socket
client=socket.socket(socket.AF_INET,socket.SOCK_STREAM)
client.connect(('127.0.0.1',9527))
while True:
    msg=input('发给麦迪文:').strip()
    if msg=='q':
        print('正在退出!')
        break
    if not msg:
            continue
    client.send(msg.encode('utf8'))
    data=client.recv(1024)
    print(data)

# server端
#这是从麻老师那边抄来的https://www.cnblogs.com/maqiaobin/p/11721972.html,客户端用我的也行

from socket import *
from multiprocessing import Process

server=socket(AF_INET,SOCK_STREAM)
server.setsockopt(SOL_SOCKET,SO_REUSEADDR,1)#头皮发麻,这个我们学过吗
server.bind(('127.0.0.1',9527))
server.listen(5)

def talk(conn,client_addr):
    while True:
        try:
            msg=conn.recv(1024)
            if not msg:break
            conn.send(msg.upper())#这里的upper其实没必要
        except Exception:
            break

if __name__ == '__main__':
    while True:
        conn,client_addr=server.accept()
        p=Process(target=talk,args=(conn,client_addr))
        p.start()