I'm playing with the MQTT API as I'm new to this kind of API.
I can't manage to get the last value for a variable using the trailing
/lv when subscribing to the topic: nothing comes back. Later messages do come in perfectly though.
The only way I found to get the last value is to use retrained messages when publishing: this way, I automatically get the last retained message (and value) when I subscribe.
Am I missing something?
For the record, I've been using MQTTlens (a Chrome extension) and MQTTbox (available on Windows app store), with the same output.