In trying to implement a Node-RED/UIBUILDER replacement for MQTT Explorer, I'm hitting some issues that I'm not sure can be worked around.
While both the mqtt-in and -out nodes allow dynamic settings, they also require an actual broker to be pre-configured otherwise they don't work. Or at least, I can't find a way to make them work.
I need to be able to dynamically disconnect/reconnect to any broker in order to trigger the output of retained messages. That is on the MQTT-in node.
I also need to be able to publish to that dynamically connected broker using an mqtt-out node to allow publishing of arbitrary messages from the UI.
What I don't want to have to do is create a working broker configuration for my own system because that gets exported when sharing the flow and that is not appropriate. This alone seems not possible?
But in addition, all the messing with having to send multiple commands makes the whole thing quite messy even if that last issue wasn't present.
I am open to ideas here but at present I can't see any way forwards other than creating a custom function node that uses the mqtt npm package directly.
This is where I'm up to so far:
Note that this may not work as given because the DUMMY broker may not exist.
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