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ApsaraMQ for MQTT:SDK demo projects

Last Updated:Jun 03, 2026

ApsaraMQ for MQTT demo projects cover common scenarios with inline code comments for guidance.

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

Usage notes

If you use ApsaraMQ for MQTT with backend message brokers such as ApsaraMQ for RocketMQ, review the Mapping between MQTT and ApsaraMQ for RocketMQ message structures.

Note

Demo coverage varies by language and is updated periodically. If a demo is unavailable for your language, refer to the Java example, download the SDK, and test.

More information

Sample code is for reference only. Download language-specific SDKs from SDK downloads.