I am trying to connect to azure iot-hub over mqtt with the library mqtt-tls. If the device is trying to connect is get a timeout. When i use the same settings in a windows program mqtt-box i can make a connection. Connecting to Losant with this library works fine, but i can’t get a connection wit…

@hirotakaster can jou help me with this issue?

Why not use Particles Azure integration for getting data into Azure IOT?

I now particle have a intergration with azure. In my oppinion a direct connection is always better. The device is capable to handle it, so why not use it? In this case particle cloud is a extra point of failure. I am not the first and i think not the last who want to connect to azure directly.

There are memory limitations with using secure MQTT from what I understand. The particle integration works around those issues. I agree a direct connection is best but the Photon is limited when it comes to secure MQTT.

As far as I can tell the particle integration can not handle cloud to device messaging? This is what is making me pursue a direct connection.

Hi, I am having the same problem. @aart , have you managed to solve this? Thanks a lot, Pavel

@aart After some struggle, it seems that no upload of a certificate to Azure is required, at least for authentication with SAS tokens (I have not tried X.509 certificates though). The problem is that the library uses older MQTT3.1 version whereas Azure requires the newer 3.1.1 version of the proto…

Hi guys @aart , sorry late response Now I test TLS(mbedTLS TCP client) on 0.7.x and 0.8 Photon firmware, but it can’t work because of memory limitations “Memory allocation failed” happen when public key(RSA) negotiation. And I make memory shape version mbedTLS(just 61kbyte application size), but Mem…

MQTT-TLS Azure iot-hub

Firmware Libraries

aart January 9, 2018, 4:53pm 9

No, but so far as i know for now you must upload the certificate to azure. I am working on a other project now, sow i didnt test if that solve the problem.
If you make progres, let me now…

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MQTT-TLS Azure iot-hub

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