@Flohack Yes the overall system seems quite easy, but the devil lies in the details. Starting from scratch would be reinventing the wheel when there are those nice existing NodeRed nodes. But they reference further NodeJS libraries and while all of that is probably not a big deal for an somewhat experienced Javascript developer, I am somewhat lost looking at it

@UniSuperBox it sure isn't... It's a seven letter word...

Oh... It seems I've assumed, that there was some kind of black magic switching channels for me... A compelling case of rtfm (respectively wiki) - I'm sorry...

@Flohack I know that any DBus call - except for some - is by default denied by AppArmor, therefore we should for sure update the confinement AA templates. I think we'd probably need to define a new AppArmor profile for headless apps, in order to prevent e.g. usage of the UriHandler service