我在 python 中制作了一个简单的网络服务器,之前遇到了一些问题,如下所述:Python (3.3) Webserver script with an interesting error
在那个问题中,答案是使用While True:
循环,以便立即解决任何崩溃或错误,因为它会重新启动。
我已经使用了一段时间,仍然想让服务器每隔几分钟自动重启一次,但是在 Linux 上由于某种原因它对我不起作用。在 Windows 上,下面的代码工作正常,但在 linux 上它一直说
Handler class up here
...
...
class Server:
def __init__(self):
self.server_class = HTTPServer
self.server_adress = ('MY IP GOES HERE, or localhost', 8080)
global httpd
httpd = self.server_class(self.server_adress, Handler)
self.main()
def main(self):
if count > 1:
global SERVER_UP_SINCE
HOUR_CHECK = int(((count - 1) * RESTART_INTERVAL) / 60)
SERVER_UPTIME = str(HOUR_CHECK) + " MINUTES"
if HOUR_CHECK > 60:
minutes = int(HOUR_CHECK % 60)
hours = int(HOUR_CHECK // 60)
SERVER_UPTIME = ("%s HOURS, %s MINUTES" % (str(hours), str(minutes)))
SERVING_ON_ADDR = self.server_adress
SERVER_UP_SINCE = str(SERVER_UP_SINCE)
SERVER_RESTART_NUMBER = count - 1
print("""
SERVER INFO
-------------------------------------
SERVER_UPTIME: %s
SERVER_UP_SINCE: %s
TOTAL_FILES_SERVED: %d
SERVING_ON_ADDR: %s
SERVER_RESTART_NUMBER: %s
\n\nSERVER HAS RESTARTED
""" % (SERVER_UPTIME, SERVER_UP_SINCE, TOTAL_FILES, SERVING_ON_ADDR, SERVER_RESTART_NUMBER))
else:
print("SERVER_BOOT=1\nSERVER_ONLINE=TRUE\nRESTART_LOOP=TRUE\nSERVING_ON_ADDR:%s" % str(self.server_adress))
while True:
try:
httpd.serve_forever()
except KeyboardInterrupt:
print("Shutting down...")
break
httpd.shutdown()
httpd.socket.close()
raise(SystemExit)
return
def server_restart():
"""If you want the restart timer to be longer, replace the number after the RESTART_INTERVAL variable"""
global RESTART_INTERVAL
RESTART_INTERVAL = 10
threading.Timer(RESTART_INTERVAL, server_restart).start()
global count
count = count + 1
instance = Server()
if __name__ == "__main__":
global SERVER_UP_SINCE
SERVER_UP_SINCE = strftime("%d-%m-%Y %H:%M:%S", gmtime())
server_restart()
基本上,我创建一个线程每 10 秒重新启动一次(出于测试目的)并启动服务器。十秒钟后它会说
File "/home/username/Desktop/Webserver/server.py", line 199, in __init__
httpd = self.server_class(self.server_adress, Handler)
File "/usr/lib/python3.3/socketserver.py", line 430, in __init__
self.server_bind()
File "/usr/lib/python3.3/http/server.py", line 135, in server_bind
socketserver.TCPServer.server_bind(self)
File "/usr/lib/python3.3/socketserver.py", line 441, in server_bind
self.socket.bind(self.server_address)
OSError: [Errno 98] Address already in use
正如您在该except KeyboardInterruption
行中看到的,我尝试了一切使服务器停止,程序停止,但它不会停止。但我真正想知道的是如何让这个服务器能够重新启动,而不会出现一些奇怪的错误。