A gnat is any of many species of tiny flying insects.
(Reasonably) modern C++ wrapper around mosquitto, a C library for MQTT.
I didn't like mosquittopp very much, so I made my own (very small) wrapper around mosquitto. Comes with a few tests and works well for me and my very limited usecase.
In case you want to run tests, please clone this repo with submodules so
you also get doctest. Then execute:
cmake -B build
cmake --build build