WRITE vs PUBLISH (with retain flag)

[christianruppert]

I am not sure if I am doing something wrong, but could it be that your persistance is not supported by PubSubClient.

See my thread here: Imroy/pubsubclient#96

I guess the retain flag is not working (have to use write API) - which is not supported by a lot of clients (NodeRed, PubSub).

Workaround is "Rule" in your backend and forward a publish via write to other topic (but requires new topic to avoid loop).

Any ideas, input, feedback?

Thanks,
Chris

PS: For others, if you really need persistent topics with libraries only supporting publish you might have to use the workaround to set up a rule which takes TOPIC_A publish and WRITES it to TOPIC_A_Persistant

[christianruppert]

Addition: In the samples (e.g. here https://github.com/beebotte/bbt_arduino_examples/blob/master/examples/TempHumidReporting.ino) around line 60 it looks like its possible to get the desired behaviour by using more complex JSON format - I will try that, if that works would be a workaround - though a lot of code to e.g. send a simple short string like "Status" with retain=1 would be much nicer :-)