MQTT v3?

[yanshay]

Hi,
Is there a rust implementation of MQTT client that supports MQTT v3 and is no_std?
I can't seem to find one, only v5, and it's pretty standard in IoT (still the default for the common mqtt implementations).
Thanks

[yanshay]

@bjoernQ I found this in your repo - https://github.com/bjoernQ/esp32-rust-nostd-temperature-logger/blob/main/src/tiny_mqtt.rs, is this mqtt3?

[bjoernQ]

@bjoernQ I found this in your repo - https://github.com/bjoernQ/esp32-rust-nostd-temperature-logger/blob/main/src/tiny_mqtt.rs, is this mqtt3?

Yes, that is MQTT3.1 - it's using https://crates.io/crates/mqttrust to encode/decode MQTT packets. Unfortunately that example is quite outdated (I plan on updating it whenever I get to it) but you can probably create something similar