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Jul 31, 2025
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fix(iot): add mqtt version limitation #5357

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fix(iot): add mqtt version limitation
RoRoJ Jul 30, 2025
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Update pages/iot-hub/faq.mdx
RoRoJ Jul 31, 2025
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RoRoJ Jul 31, 2025
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4 changes: 4 additions & 0 deletions pages/iot-hub/concepts.mdx
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Expand Up @@ -66,6 +66,10 @@ Message filters restrict the messages a device can publish or subscribe to. Each

Message Queuing Telemetry Transport (MQTT) is a lightweight publish/subscribe protocol for exchanging messages between devices and/or applications. Find out more about MQTT [on our blog](https://www.scaleway.com/en/blog/introduction-to-mqtt-protocol/).

<Message type="note">
Scaleway IoT Hub supports MQTT v3.1, but not MQTT v5.
</Message>

## Mutual TLS (mTLS)

Mutual TLS is a method of mutual authentication. It indicates that both the TLS client and TLS server are required to authenticate each other. Each party must therefore possess a certificate to provide to the other, as well as a Certificate Authority to verify the certificate provided by the other party.
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6 changes: 5 additions & 1 deletion pages/iot-hub/faq.mdx
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Expand Up @@ -85,4 +85,8 @@ On a dedicated or High-Availability Hub, you are the only customer on the messag
Any MQTT message between the Hub and a Device will be billed. If the message is bigger than 4 kB, then each 4 kB chunk of the message will be counted as a message for billing purposes. For example, a 9 kB message will be billed as 3 messages.

## What is the maximum message size?
The maximum size for a message is 4 MB.
The maximum size for a message is 4 MB.

## Which versions of MQTT are supported by Scaleway IoT Hub?

Scaleway IoT Hub supports MQTT v3.1, but not MQTT v5.