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thomassorensen2650 / node-red-contrib-mqtt-sparkplug-plus

A node that makes it simple to implement MQTT Sparkplug in Node-Red
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Missing important "clean session" checkbox on mqtt broker settings #63

Open JSmits96 opened 1 month ago

JSmits96 commented 1 month ago

Hi, I can't find a way to enabled/disable clean session for mqtt broker configuration. Any chance, we can see this being added in a upcoming version?

Thanks!

thomassorensen2650 commented 1 month ago

This checkbox was actually removed to clean up the UI. Per the Sparkplug B specification connections should always use clean session. Is there any reason why you would like to not use a clean session?

JSmits96 commented 1 month ago

That seems strange that it is not in the specification, I'm not aware of that. for Spb mqtt clients I would need my session to be persisted to make sure I can recover from data connectivity issues without data loss. I tested locally and I lose data when my client reconnects to the broker. Is there another way to overcome this?

thomassorensen2650 commented 1 month ago

Are you using the Sparkplug Device node? Do you have the "Store Forward when not connected" option enabled on that Sparkplug Device?

JSmits96 commented 1 month ago

I'm using the 'mqtt sparkplug in' node, not the EoN device node. For this node I do see added value in having the session. I agree that for EoN nodes, that are mainly metrics generators, there is no need as it is also specified in the specification.

As a backup solution I could switch to standard mqtt node, with session option, followed by a proto decoder but I would highly prefer to stick to your solution here for the 'mqtt in' nodes as it works perfectly fine.