MQTT is a machine-to-machine (M2M) protocol utilizing the publish-and-subscribe paradigm. Its purpose is to provide a channel with minimal communication overhead.
Generally, MQTT is used on top of a TCP connection. However, the base requirement is defined as an ordered, lossless, bidirectional connection.
The Qt MQTT module provides a standard compliant implementation of the MQTT protocol specification. It enables applications to act as telemetry displays and devices to publish telemetry data. The supported versions are MQTT 3.1, MQTT 3.1.1, and MQTT 5.0.
Note: Qt MQTT is part of the Qt for Automation offering and not Qt. For further details please see Qt for Automation.
To include the definitions of the module's classes, use the following directive:
To link against the module, add this line to your qmake
QT += mqtt
© 2022 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.