如何在python中关闭套接字连接?

我有socket server和socket client两个端程序:

服务器:

#!/usr/bin/env python3
#-*- coding:utf-8 -*-
# Author:sele


import socket

HOST = '127.0.0.1'
PORT = 65432

with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
    s.bind((HOST, PORT))
    s.listen()
    conn, addr = s.accept()
    with conn:
        print('Connected by', addr)

        if addr and addr[0] != '127.0.0.44':
            conn.sendall(b'ip error')  # there I want to cut off the socket connection.

        else:

            while True:
                data = conn.recv(1024)
                if not data:
                    break

                conn.sendall(data)

#!/usr/bin/env python3
#-*- coding:utf-8 -*-
# Author:lele

import socket

HOST = '127.0.0.1'
PORT = 65432

with socket.socket(socket.AF_INET, socket.SOCK_STREAM) as s:
    s.connect((HOST, PORT))
    s.sendall(b'Hello, world')
    data = s.recv(1024)

print('Received', repr(data))

if addr and addr[0] != '127.0.0.44': 那里我想关闭连接,怎么办?

conn.close() 那个地方的密码?

连接关闭() ,则服务器现在似乎停止运行:

sele-MacBook-Pro:test01 ldl$ ./tests02-server.py 
Connected by ('127.0.0.1', 53321)
sele-MacBook-Pro:test01 ldl$