Error: Connction refused | A clean way to uninstall mosquito ?

[LempereurTom]

Hello guys,
So for a school project I've installed Mosquitto on a 11Debian.
I've messed up with some files I think.. Is there a way to fully uninstall mosquitto from the Debian, a clean way I mean with nothing left from mosquitto on the Debian?

Or maybe can you guys help me with this error :
Error: Connection refused

[LempereurTom]

The "Connection refused" error happens when I try too create a mosquitto_sub on localhost.
I've tried to create one with this command
mosquitto_sub -t newtopic/test -h test.mosquitto.org
And this is perfectly working. I can publish messages.

But whenever I use
mosquitto_sub -h localhost - t newtopic/test
I got the Connection refused Error.

[ptjm]

Maybe an obvious question, before running that command, did you run

mosquitto

? That should run the broker in the foreground with quite a lot of debug output. Once that's running, the sub and pub command-line tools should work.

To get it working on a real network interface, you'll need at least a minimal config file:

listener 1883
allow_anonymous true