如何断开自定义事件 python-socketio

Question

I have the 2 handlers:

@sio.event
async def connect(sid, environ):
    print('connect', sid)

@sio.event
async def disconnect(sid, environ):
    # perform some user management stuff
    # perform some cleaning as well
    print('disconnect', sid)

I want to trigger the disconnect event handler (as I want to perform some specific operations on disconnection), but on a custom event named leaveWorkbench .

• does sio.disconnect() coroutine actually calls the even handler disconnect ?
• should I emit an event disconnect this way:

@sio.event
async def leaveWorkbench(sid):
    await sio.emit('disconnect')

(seems from the docs not a good idea as "reserved"(?) + it would be caught by the client so probably not a working solution)

• or should I simply turn the event handler as a method ? with use of sio.discconect

async def disconnect_handler(sid):
    # operations to be performed on disconnection
    await sio.disconnect(sid)??

@sio.event
async def leaveWorkbench(sid):
    await disconnect_handler(sid)

@sio.event
async def disconnect(sid):
    await disconnect_handler(sid)

• At last, other "cleaner" alternatives? Important note: I make use the session object at disconnection

Answer 1

The correct way to do this is to call sio.disconnect(sid) .

But note that the disconnect() method just initiates a disconnection that then happens in the background. The disconnect handler for the affected client will eventually be called, but it may not be immediate (ie may take a second or two). The client will also be notified that it is being disconnected.