Subscribe to different MQTT brokers and topics simultaneously, and soak up what they have to offer. msoak is documented in it's man page of which there is a version as PDF.

Launch msoak with the example configuration file:

$ msoak example.config

Then publish a message:

mosquitto_pub -t tests/sponge/1 -m "$(jo name=Jane number=42)"

you should see the payload as formatted by Lua. The word loc at start of output is the id of the connection as specified in example.config. (jo is a utility to easily produce JSON output in a shell, and it may well be available as a package for your system of choice.)

loc tests/sponge/1 Hello Jane -> now=18:12:50Z

To test msoak, you will need a source of MQTT test traffic, This could be a test server or a production server that you run, or one of the public test servers. The example configuration assumes that you have a test server running on localhost; edit this to suit.

In order to build msoak you will require:

• libmosquitto
• libconfig
• Lua

Edit the Makefile to select the system you are building for.

$ brew install lua libconfig mosquitto
$ make

# pkg install lua53 libconfig mosquitto
$ make

# pkg_add libconfig lua-5.3.5 mosquitto
$ make

# apt-get install libconfig-dev liblua5.3-dev libmosquitto-dev libbsd-dev
$ make

# apk add build-base libconfig-dev mosquitto-dev lua5.3-dev libbsd-dev
$ make

• mqttwarn