Python 3.3 Webserver restarting problems
- by IPDGino
I have made a simple webserver in python, and had some problems with it before as described here: Python (3.3) Webserver script with an interesting error
In that question, the answer was to use a While True: loop so that any crashes or errors would be resolved instantly, because it would just start itself again.
I've used this for a while, and still want to make the server restart itself every few minutes, but on Linux for some reason it won't work for me. On windows the code below works fine, but on linux it keeps saying
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()
Basically, I make a thread to restart it every 10 seconds (For testing purposes) and start the server. After ten seconds it will say
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
As you can see in the except KeyboardInterruption line, I tried everything to make the server stop, and the program stop, but it will NOT stop. But the thing I really want to know is how to make this server able to restart, without giving some wonky errors.
