nmap scan stops MicroWebSrv

[dl2080]

Hello,
thank you for this nice web server project!

I'm using nmap to discover devices in my network. However, as soon as I start the scan in the linux console, MicroWebSrv on my WiPy 3.0 stops working. After that, restarting the server with srv.Start() fails due to [Errno 12] ENOMEM. I found that I need to close the socket first. srv.Stop() will not help, because it closes only, if srv._started is true, which is not the case. Maybe this can be changed? srv._server.close() helps. After that a restart of the server is possible without reseting the whole device.

To trace the cause of the server stop error, I changed the try/except block in microWebSrv.py line 239 to

try :
   client, cliAddr = self._server.accept()
except Exception as e :
   print(str(e))
   break

I get [Errno 128] ENOTCONN when nmap starts.

It seems some connection is being lost. Is there a way to prevent MicroWebSrv from stopping at this position?

nmap has version 7.60
wipy firmware is 1.19.0.b4
micropython has version 1.9.4
Server is started with:

srv = MicroWebSrv(routeHandlers = routeHandlers)
srv.MaxWebSocketRecvLen = 256
srv.WebSocketThreaded = True
srv.AcceptWebSocketCallback = _acceptWebSocketCallback
srv.Start(threaded = True)

[jczic]

Hello,
Yes I see that ! I've just updated the code to close server only if the error code is 113 (normal closing socket).
You can check at : 5074d96
That's ok for you ?
Thanks !

[dl2080]

Yes, it doesn't crash anymore!
Great! Thanks a lot!

[jczic]

Hello, I released a fully new version (v2.0) of my web server here : github.com/jczic/MicroWebSrv2. Open source MIT, fully asynchronous, more robust, more fast and more efficient! It is delivered with a good documentation. Thank you for your support and feedback. ☺️ Jean-Christophe Bos Le jeu. 11 oct. 2018 à 21:43, dl2080 <[email protected]> a écrit :

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