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    ApsaraMQ for MQTT:Demo projects

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    ApsaraMQ for MQTT:Demo projects

    Last Updated:Feb 03, 2026

    This topic introduces the demo projects for ApsaraMQ for MQTT. These projects provide guidance for various scenarios. For more information, see the comments in the source code.

    Get multi-language demos

    For the complete sample code, see mqtt-demo.

    After you download and decompress the package, a folder named mqtt-demo-main is created on your local machine. The top-level folders are categorized by programming language. You can debug the code as needed.

    Java

    Scenario

    Download link

    Standalone MQTT message sending and receiving example

    mqtt.demo.java

    MQTT token example

    mqtt.token.mode.demo.java

    MQTT SSL encryption example

    mqtt.ssl.demo.java

    Example of sending messages from MQTT and subscribing to them in ApsaraMQ for RocketMQ

    mqtt.to.rocketmq.demo.java

    Example of sending messages from ApsaraMQ for RocketMQ and subscribing to them in MQTT

    rocketmq.to.mqtt.demo.java

    Example of sending ordered messages from MQTT and subscribing to them as ordered messages in ApsaraMQ for RocketMQ

    mqtt.ordered.msg.demo.java

    Example of asynchronous notifications for MQTT client online and offline status

    mqtt.client.status.notice.demo.java

    MQTT SSL mutual authentication example

    mqtt.bissl.demo.java

    Python

    Scenario

    Download link

    Standalone MQTT message sending and receiving example

    mqtt.demo.python

    MQTT SSL encryption example

    mqtt.ssl.mode.demo.python

    PHP

    Scenario

    Download link

    Standalone MQTT message sending and receiving example

    mqtt.demo.php

    MQTT token example

    mqtt.token.mode.demo.php

    Example of sending ordered messages from MQTT and subscribing to them as ordered messages in ApsaraMQ for RocketMQ

    mqtt.ordered.msg.demo.php

    C

    Scenario

    Download link

    Standalone MQTT message sending and receiving example

    mqtt.demo.c

    MQTT SSL encryption example

    mqtt.ssl.demo.c

    Note

    For more C dependency libraries, see eclipse/paho.mqtt.c.

    .NET

    Scenario

    Download link

    Standalone MQTT message sending and receiving example

    mqtt.demo.net

    MQTT SSL encryption example

    mqtt.ssl.mode.demo.net

    JavaScript

    Scenario

    Download link

    Standalone MQTT message sending and receiving example

    mqtt.demo.javascript

    MQTT SSL encryption example

    mqtt.ssl.demo.javascript

    WebSocket message sending and receiving example

    mqtt.websocket.demo.javascript

    iOS

    Scenario

    Download link

    Standalone MQTT message sending and receiving example

    mqtt.demo.ios

    MQTT SSL encryption example

    mqtt.ssl.demo.ios

    Notes on using the demos

    If you use ApsaraMQ for MQTT with other backend log brokers, such as ApsaraMQ for RocketMQ, you must understand the message structure and property mapping. For more information, see Message structure mapping between MQTT and ApsaraMQ for RocketMQ.

    Note

    The demo programs for different programming languages may vary in completeness and are periodically updated. If a demo for a specific feature is not available, you can refer to the Java example, download the SDK for your language, and test the feature.

    More information

    The sample code is provided for reference only. To download an SDK for a specific language, see SDK downloads.