Demo projects - ApsaraMQ for MQTT - Alibaba Cloud Documentation Center

This topic describes the demo projects for ApsaraMQ for MQTT and provides usage notes for using Message Queue for MQTT in various scenarios. For more information, see the comments of the source code of the demos.

Obtain demos for multiple programming languages

For the complete set of sample code, see mqtt-demo.

Decompress the downloaded package. The mqtt-demo-main folder is added. Level-1 folders are classified based on programming languages. Perform debugging based on your business requirements.

Java


Scenario	Download link
Example on how to use only Message Queue for MQTT to send and subscribe to messages	mqtt.demo.java
Example on how to use the signature authentication mode of Message Queue for MQTT	mqtt.signature.mode.demo.java
Example on how to use the token-based authentication mode of Message Queue for MQTT	mqtt.token.mode.demo.java
Example on how to use the SSL encryption of Message Queue for MQTT	mqtt.ssl.demo.java
Example on how to use Message Queue for MQTT to send messages and use Message Queue for Apache RocketMQ to subscribe to messages	mqtt.to.rocketmq.demo.java
Example on how to use Message Queue for Apache RocketMQ to send messages and use Message Queue for MQTT to subscribe to messages	rocketmq.to.mqtt.demo.java
Example on how to use Message Queue for MQTT to send ordered messages and use Message Queue for Apache RocketMQ to subscribe to ordered messages	mqtt.ordered.msg.demo.java
Example on how to configure asynchronous status notifications for Message Queue for MQTT clients	mqtt.client.status.notice.demo.java

Python


Scenario	Download link
Example on how to use only Message Queue for MQTT to send and subscribe to messages	mqtt.demo.python
Example on how to use the signature authentication mode of Message Queue for MQTT	mqtt.signature.mode.demo.python
Example on how to use the SSL encryption of Message Queue for MQTT	mqtt.ssl.mode.demo.python

PHP


Scenario	Download link
Example on how to use only Message Queue for MQTT to send and subscribe to messages	mqtt.demo.php
Example on how to use the signature authentication mode of Message Queue for MQTT	mqtt.signature.mode.demo.php
Example on how to use the token-based authentication mode of Message Queue for MQTT	mqtt.token.mode.demo.php
Example on how to use Message Queue for MQTT to send ordered messages and use Message Queue for Apache RocketMQ to subscribe to ordered messages	mqtt.ordered.msg.demo.php

C


Scenario	Download link
Example on how to use only Message Queue for MQTT to send and subscribe to messages	mqtt.demo.c
Example on how to use the signature authentication mode of Message Queue for MQTT	mqtt.signature.mode.demo.c
Example on how to use the SSL encryption of Message Queue for MQTT	mqtt.ssl.demo.c

Note For more information about the dependency libraries for C, see eclipse/paho.mqtt.c.

.NET


Scenario	Download link
Example on how to use only Message Queue for MQTT to send and subscribe to messages	mqtt.demo.net
Example on how to use the signature authentication mode of Message Queue for MQTT	mqtt.signature.mode.demo.net
Example on how to use the SSL encryption of Message Queue for MQTT	mqtt.ssl.mode.demo.net

JavaScript


Scenario	Download link
Example on how to use only Message Queue for MQTT to send and subscribe to messages	mqtt.demo.javascript
Example on how to use the signature authentication mode of Message Queue for MQTT	mqtt.signature.mode.demo.javascript
Example on how to use the SSL encryption of Message Queue for MQTT	mqtt.ssl.demo.javascript
Example on how to use WebSocket to send and subscribe to messages	mqtt.websocket.demo.javascript

iOS


Scenario	Download link
Example on how to use only Message Queue for MQTT to send and subscribe to messages	mqtt.demo.ios
Example on how to use the signature authentication mode of Message Queue for MQTT	mqtt.signature.mode.demo.ios
Example on how to use the SSL encryption of Message Queue for MQTT	mqtt.ssl.demo.ios

Usage notes

If you use ApsaraMQ for MQTT together with other backend message storage services such as ApsaraMQ for RocketMQ, make sure that you understand the mappings between message structures and attributes. For more information, see Message structure mappings between MQTT and RocketMQ.

Note The integrity of a demo varies based on the programming language. Updates for demos will be provided in future versions. If no demo is available for a feature, download the SDK for the corresponding programming language to test the feature. For more information, see Java examples.

Additional information

The sample code is provided only for reference. For information about how to obtain the SDK for a specific programming language, see Download the SDK.