通过按键中断socket.accept（）

Question

我知道我们可以按CTRL + C来中断程序，但是当我尝试在套接字上侦听的程序无法执行此操作（可能仅在Windows上）。因此，我尝试找到解决方法，但是没有用：

import sys, socket, time, msvcrt, threading

msg = ".:::SERVER:::." 
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.bind(('', 8881))
s.listen(5)

def start_server():
    while True: 
        print("Waiting for connections...")
        (conn, addr) = s.accept() 
        print("Connection with:", addr[0])
        conn.send(bytes(str(len(msg)), "UTF-8"))
        conn.send(bytes(msg, "UTF-8"))
        conn.close()

t = threading.Thread(target = start_server)
t.start()

key = msvcrt.getwch()
print(key)
if key == 'z':
    sys.exit(0)