Stop server error

[johnroper100]

Long story short

I'm trying to send a message to the server that stops both the web server as well as the python-socketio server (they are connected).

I currently have this code:

import socketio
from aiohttp import web

sio = socketio.AsyncServer(async_mode='aiohttp')
app = web.Application()
sio.attach(app)

web.run_app(app)

@sio.on('quit tonalite', namespace='/tonalite')
async def quit_tonalite(sid, message):
    sys.exit(0)

Expected behaviour

I would expect the script to close just as if I was clicking CTRL+C in the terminal.

Actual behaviour

I get this error:

message async handler error
Traceback (most recent call last):
  File "/home/johnroper100/.local/lib/python3.6/site-packages/engineio/asyncio_server.py", line 266, in _trigger_event
    ret = await self.handlers[event](*args)
  File "/home/johnroper100/.local/lib/python3.6/site-packages/socketio/asyncio_server.py", line 364, in _handle_eio_message
    await self._handle_event(sid, pkt.namespace, pkt.id, pkt.data)
  File "/home/johnroper100/.local/lib/python3.6/site-packages/socketio/asyncio_server.py", line 294, in _handle_event
    await self._handle_event_internal(self, sid, data, namespace, id)
  File "/home/johnroper100/.local/lib/python3.6/site-packages/socketio/asyncio_server.py", line 297, in _handle_event_internal
    r = await server._trigger_event(data[0], namespace, sid, *data[1:])
  File "/home/johnroper100/.local/lib/python3.6/site-packages/socketio/asyncio_server.py", line 325, in _trigger_event
    ret = await self.handlers[namespace][event](*args)
  File "tonalite.py", line 373, in quit_tonalite
    sys.exit(0)
SystemExit: 0

Your environment

I'm using aiohttp as a server on both Windows and Linux.

[asvetlov]

If you want emulate Ctrl+C -- send KeyboardInterrupt signal, not SystemExit.

P.S. Stopping web server by regular websocket message sounds very strange for me. The server is multi-client application by definition, stopping serving all connections by single request from arbitrary client sounds weird.

[hellysmile]

Try to send signal.SIGINT to own process os.getpid()

[johnroper100]

Basically, this is running without a console with only a html gui so I need the message to shutdown down the application.

[asvetlov]

How do you shutdown, e.g. NGINX?
Or your box at all?
Is it possible from html gui?
Perhaps no.
Why do you need shutdown particular websocket server?

[johnroper100]

I have this in a single python script that receives messages from a html+js client. I use pyinstaller on this script, but there is no console when using pyinstaller. This solution is supposed to be the same as closing the program by closing the console if there were one.

[johnroper100]

It's all in a repo here: https://github.com/johnroper100/Tonalite

[asvetlov]

@hellysmile approach should work

[lock]

This thread has been automatically locked since there has not been any recent activity after it was closed. Please open a [new issue] for related bugs.
If you feel like there's important points made in this discussion, please include those exceprts into that [new issue].
[new issue]: https://github.com/aio-libs/aiohttp/issues/new