MQTT Broker Notes¶

Installation¶

OSX¶

Install mosquitto with:

brew install mosquitto

Add mosquitto to launchd with:

brew services start mosquitto

If you don't want to run mosquitto as a background service, run it from the command line with:

/usr/local/sbin/mosquitto -c /usr/local/etc/mosquitto/mosquitto.conf

Windows¶

Create a folder named mosquitto in C:\Program Files (x86).

Download and install Win32 OpenSSL v.1.0.2j Light. Select the option to save the binaries to /bin. Find libeay32.dll and ssleay32.dll, move them to mosquitto.

Download pthreadVC2.dll, move it to mosquitto.

Download and install mosquitto to the default directory (should be the folder created earlier).

Open Services, find Mosquitto Broker and start it.

To be able to run it from the command line, open System Properties, go to the Advanced tab, and open Environment Variables. Add the path to mosquitto to the user Path variable, followed by ;. e.g.

C:\Program Files (x86)\mosquitto;

Commands are run in cmd like OSX and Linux.

Docker¶

Run mosquitto as a docker service with:

docker run -ti -p 1883:1883 -p 9001:9001 toke/mosquitto

Image details are here.

Raspbian¶

Install mosquitto with:

sudo apt-get install mosquitto
sudo apt-get install mosquitto-clients

Verify that the broker is running with:

systemctl status mosquitto

Testing the MQTT Broker from CLI¶

$ mosquitto_sub -d -h localhost -t testtopic
Client mosqsub/27524-pleiku.lo sending CONNECT
Client mosqsub/27524-pleiku.lo received CONNACK
Client mosqsub/27524-pleiku.lo sending SUBSCRIBE (Mid: 1, Topic: testtopic, QoS: 0)
Client mosqsub/27524-pleiku.lo received SUBACK
Subscribed (mid: 1): 0

Publish¶

$ mosquitto_pub -d -h localhost -m "simple val" -t testtopic
Client mosqpub/27472-pleiku.lo sending CONNECT
Client mosqpub/27472-pleiku.lo received CONNACK
Client mosqpub/27472-pleiku.lo sending PUBLISH (d0, q0, r0, m1, 'testtopic', ... (10 bytes))
Client mosqpub/27472-pleiku.lo sending DISCONNECT