I have built an IoT system using Azure IoT Hub. I can’t install Azure IotHub into my ReactNative app to send Mqtt messages. Is there any way to send messages from ReactNative app? Please help me guide me. Or if there is another way, please explain it to me. Thank you.

Hello @Nguyen Van Tai, welcome to this moderated Azure community forum. The IoT Hub supports MQTT as transport protocol but is very strict on the number of topics because these are tied to the DeviceTwin mechanism. See this blog post on how to work with those topics. If you want to do vanilla MQTT, check out the new MQTT support for EventGrid. See this blog post with an explanation and a video about the 'IoTGrid' service. If the response helped, do "Accept Answer". If it doesn't work, please let us know the progress. All community members with similar issues will benefit by doing so. Your contribution is highly appreciated.

How to send an MQTT message from a ReactNative App to Azure IotHub?

Accepted answer

Sander van de Velde | MVP 33,141 Reputation points MVP

2024-01-31T10:15:15.39+00:00

Hello @Nguyen Van Tai,

welcome to this moderated Azure community forum.

The IoT Hub supports MQTT as transport protocol but is very strict on the number of topics because these are tied to the DeviceTwin mechanism.

See this blog post on how to work with those topics.

If you want to do vanilla MQTT, check out the new MQTT support for EventGrid.

See this blog post with an explanation and a video about the 'IoTGrid' service.

If the response helped, do "Accept Answer". If it doesn't work, please let us know the progress. All community members with similar issues will benefit by doing so. Your contribution is highly appreciated.
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1 person found this answer helpful.
Nguyen Van Tai 20 Reputation points

2024-02-01T01:39:26.16+00:00

I am very happy to receive your answer. I understood but I hope you can explain more about the SDK support for reactnative app for Azure IotHub. Does it really support reactnative app? I need it to confirm with my superiors about the decision to switch to using a similar tool.

Sander van de Velde | MVP 33,141 Reputation points MVP

2024-02-01T08:28:20.0166667+00:00

Hello @Nguyen Van Tai,

you need to set up a secure communication tunnel from your app to the broker.

Because you do not want to keep the unique credentials/certificate within the browser (so everyone can read them) and you probably want to share that connection for multiple users, you need to create a backend solution.

So you users app talks to the backend and the backend talks to the (MQTT) Broker.

This provides security and separation of concerns.

Shahanshah Alam 0 Reputation points

2024-06-26T10:04:47.06+00:00

Hi @sander van de velde
is it possible to use MQTT to develop an IoT device client without using a device SDK for Android, iOS or React-Native (basically Mobile app)?
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How to send an MQTT message from a ReactNative App to Azure IotHub?

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