Intrexx Industrial - Test MQTT Broker

The Test MQTT Broker supports the IoT protocols JMS (OpenWire) and MQTT. It can be reached under the following addresses:

• JMS: ssl://message-broker.unitedplanet.com:61616
• MQTT: ssl://message-broker.unitedplanet.com:8883

Other protocols (e.g. Stomp) can be configured upon request. The following will demonstrate how topics can be read, written and administrated on the Test MQTT Broker. Click here for more information about how you can configure your own Broker.

Authentication

The Test MQTT Broker can be accessed using the following users, who have different access permissions:

• "guest" user: can log in anonymously and read topics with the prefix "guest" / "guest/".
• "extuser" user with the password "haithabu": can read, write and administrate topics with the prefix "guest" / "guest/" and topics and queues with the prefix "public" / "public/".

At which points authenticaion takes place will be explained in the following examples.

Topics and queues

The following timers, which provide the current server time as a JSON string in the format "2017-12-24T12:34:56.789Z" in different installments, are available as predefined topics:

• timer.hundredmsly
• timer.secondly
• timer.minutely
• timer.hourly
• timer.daily

If you are using MQTT instead of JMS, the period (.) needs to be replaced by a slash (/).

More information

1. Intrexx Industrial
2. MQTT in Intrexx
3. Polling
4. Increased perfomance by only refreshing specific elements on a page
5. Complete Java Sample Code for a seamless integration in the Processes module (event source, event handler and action)
6. Configuration of an MQTT Message Broker
7. http://docs.oasis-open.org/mqtt/mqtt/v3.1.1/os/mqtt-v3.1.1-os.html