Allow new subscriptions after connect

[andrei-ivanov]

Hi, Looking at the source of Adafruit_MQTT::connect(), I see that it's the only place where the actual subscription is being performed.

I would like to be able to subscribe to topics after connection too, like unsubscribe.

I'm using this library with an Adafruit Fona.

[Thuetar]

I just wanted to thank the poster for taking the time to ask this. I missed the need as well and spent a few hours debugging my code. It's this post that pointed me in the right direction.

[bbustin]

I also wanted to thank the poster. I ran into this issue as well and also wasted a few hours debugging my code.

[swrocks253]

So the logic for subscribing after mqtt.connect() is to disconnect from the mqtt server by calling mqtt.disconnect(), subscribe to the topic, and then reconnect to the mqtt server?