作业29

写一个基于TCP协议套接字，服务端实现接收客户端的连接并发。

# client
import socket

client = socket.socket()

client.connect(
    ('127.0.0.1', 9527)
)
while True:
    msg = input('>>: ').strip()
    if not msg:
        continue
    client.send(msg.encode('utf-8'))
    data = client.recv(1024)

    print(data)
    
# server
import socket
from threading import Thread
import threading

server = socket.socket()
server.bind(
    ('127.0.0.1', 9527)
)

server.listen(3)


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


if __name__ == '__main__':

    while True:
        conn, addr = server.accept()
        p = threading.Thread(target=action, args=(conn,))
        p.start()