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Check if connection is running before connecting. #296

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@ilar ilar commented Apr 2, 2024

Don't force-reconnect every delay seconds if the connection is already running.

Comment on lines -161 to +165
self.periodic_connection_running = True
while not self.stop_connection:
try:
self._connect()
if not self.periodic_connection_running:
self._connect()
self.periodic_connection_running = True
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Are you sure this does what you think it does? This looks like a mutex to me and with this you're defeating the purpose of the mutex?

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self.periodic_connection_running is just the current state of whether or not we have a current active connection.

self.stop_connection is the mutex-like that actually controls whether or not the connection SHOULD be stopped.

If stop_connection == False and periodic_connection_running == False, we need to restart the connection- anything else we just let pass through, because we're either already connected and should be, or stopping the connection and falling out of the while loop.

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@jan-xyz jan-xyz May 23, 2024

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Hmmm it doesn't look like this. self.periodic_connection_running is just prohibiting multiple while-loops from running. With the change it will be possible to start it multiple times.

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Why would multiple while loops be running? That would require calling periodic_connection multiple times (which would raise a runtime error, as you can only start() a thread no more than once).

Even if we did call it more than once, periodic_connection still has the guard against that on line 159.

Finally, a key takeaway here is that we're not running _connect() from periodic_connection any more than we already were- we're running it less, as we're not running it where we would have before- that is, when we already have a connection, which is the entire cause of the issue people have with 'periodic mode' constantly reconnecting. That's the only real change here.

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Any update?

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3 participants