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thitoshi · 14-01-2022, 03:24 AM

Hello,

I'm afraid some firewalls might block port 8883.

https://aws.amazon.com/blogs/iot/mqtt-wi...-it-works/
The site says TLS client must support ALPN (Application Layer Protocol Negotiation) to connect AWS IoT on port 443.

Does Flexy support ALPN in Java?

***simon*** · 17-01-2022, 10:26 AM

Hi,

That is a very good question and the answer is unfortunately no, the Flexy does not support ALPN.

Simon

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