libmosquitto(3) on Linux
The text a441aefb01e2, as Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it.
MQTT version 5.0/3.1.1 client library
The text a441aefb01e2, as Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it.
MQTT version 5.0/3.1.1 client library