Connecting Arduino MKR1010 WIFI to Amazon IoT MQTT via WSS (443)

Projects Programming
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Hi community,

I have successfully connected MKR1010 to Amazon IoT via MQTT port 8883 using X.509 client certificate.

However I am not very happy with using port 8883 since some Routers have it blocked (would need to be opened first). To make it easier for people, I want to switch to "MQTT over WebSocket via port 443" (more common port and thus open on most routers).

Amazon provides 2 options for authentication for "MQTT over WebSocket"(Custom authentication or SigV4). See here:

I cannot find any good references on the net where someone managed to connect Arduino to Amazon IoT via MQTT over WebSocket (port 443) using either of those authentication options.

Anybody has a reference project to get me started?

Thank you!

Best Regards,
Markus

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