用python写了一个socket服务端的程序,但是启动之后由于监听连接的是一个死循环,所以不知道怎样在cmd运行程序的时候将其终止。
#!/usr/bin/python # -*- coding: utf-8 -*- import socket import threading, time def tcplink(sock,addr): print('Accept new connection from %s:%s...' %addr) sock.send(b'Welcome!') while True: data=sock.recv(1024) time.sleep(1) if not data or data.decode('utf-8')=='exit': break sock.send(('Hello,%s!'% data.decode('utf-8')).encode('utf-8')) sock.close() print('Connection from %s:%s closed.' % addr) s=socket.socket() s.bind(('127.0.0.1',1234)) s.listen(5) print('Waiting for conection...') while True: #accept a new connection sock,addr=s.accept() #create a new thread t=threading.Thread(target=tcplink,args=(sock,addr)) t.start()
在win10上的cmd运行后的情况是按ctrl+c,ctrl+z,ctrl+d都不能终止,请问要怎么终止程序?
我记得可以
try: ...... except KeyboardInterrupt: exit()
可以使用signal模块,当按住Ctrl+C时,捕捉信息,然后退出.
#!/usr/bin/env python # -*- coding: utf-8 -*- import signal def do_exit(signum, frame): print("exit ...") exit() signal.signal(signal.SIGINT, do_exit) while True: print("processing ...")
关闭cmd命令窗口,重新开启一个cmd,我是这么做的。
kill -9
在启动线程之前,添加 setDaemon(True)
while True: #accept a new connection sock,addr=s.accept() #create a new thread t=threading.Thread(target=tcplink,args=(sock,addr)) t.setDaemon(True) # <-- add this t.start()
daemon
A boolean value indicating whether this thread is a daemon
thread (True) or not (False). This must be set before start() is
called, otherwise RuntimeError is raised. Its initial value is
inherited from the creating thread; the main thread is not a daemon
thread and therefore all threads created in the main thread default to
daemon = False.The entire Python program exits when no alive non-daemon threads are
left.
这样 <C-c> 的中断信号就会被 rasie。
Ctrl + C