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| layout | title | description | date | sidebar | comments | sharing | footer | logo | redirect_from |
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| page | MQTT Testing | Instructions how to test your MQTT setup. | 2015-08-07 18:00 | true | false | true | true | mqtt.png | /components/mqtt/#testing-your-setup |
The mosquitto broker package ships commandline tools (often as *-clients package) to send and receive MQTT messages. As an alternative have a look at hbmqtt_pub and hbmqtt_sub which are provided by HBMQTT. For sending test messages to a broker running on localhost check the example below:
$ mosquitto_pub -h 127.0.0.1 -t home-assistant/switch/1/on -m "Switch is ON"
If you are using the embedded MQTT broker, the command looks a little different because you need to add the MQTT protocol version.
$ mosquitto_pub -V mqttv311 -t "hello" -m world
or if you are using a API password:
$ mosquitto_pub -V mqttv311 -u homeassistant -P <your api password> -t "hello" -m world
Another way to send MQTT messages by hand is to use the "Developer Tools" in the Frontend. Choose "Call Service" and then mqtt/mqtt_send under "Available Services". Enter something similar to the example below into the "Service Data" field.
{
"topic":"home-assistant/switch/1/on",
"payload":"Switch is ON"
}
The message should appear on the bus:
... [homeassistant] Bus:Handling <Event MQTT_MESSAGE_RECEIVED[L]: topic=home-assistant/switch/1/on, qos=0, payload=Switch is ON>
For reading all messages sent on the topic home-assistant to a broker running on localhost:
$ mosquitto_sub -h 127.0.0.1 -v -t "home-assistant/#"
For the embedded MQTT broker the command looks like:
$ mosquitto_sub -v -V mqttv311 -t "#"
Add the username homeassistant and your API password if needed.