[mosquitto-dev] mosquitto disconnect callback questions

[Steve Prior <sprior@xxxxxxxxxxxx>]

I'm trying to understand the process around unexpected mosquitto disconnect 
callbacks using the C++ mosquitto library.

Let's assume I've started an async connection, set a disconnect callback, then 
call mosquitto_loop_start().

If the Mosquitto broker unexpectedly disconnects me it appears from the 
documentation for mosquitto_reconnect_delay_set that if I did nothing the client 
tries to reconnect, is that correct?

Once that reconnection happens do I lose any subscriptions I had and have to 
resubscribe, or do they stick to the new connection?

If I set a disconnect callback does the automatic reconnection still happen?

If I get the disconnection callback and want my code to exit, do I still have to 
call mosquitto_disconnect() before calling mosquitto_loop_stop()?

If I do get automatically reconnected and my subscriptions are restored it 
appears maybe most clients wouldn't actually have any reason to install a 
disconnect callback.

Thanks

Steve