How to choose between HTTP or MQTT?

[arjanvanb (Arjan)]

Also, I think that the HTTP Integration uses MQTT under the hood, but I don’t know for sure. If it does, then HTTP adds another dependency. (Say: if the HTTP Integration does not work, then maybe MQTT still works fine, but not the other way around.) Would be great to know for sure, but things may change in V3.

And:

@mfalkvidd

A mqtt connection is persistent. For a https request, there must first be the three-way TCP handshake, then the TLS handshake, before the request can be sent.

Since mqtt performs the tcp and tls handshakes once (when establishing the connection), the connection is available for sending data immediately when data comes in from the device.

Cloudflare has a good description:

https://www.cloudflare.com/learning/ssl/what-happens-in-a-tls-handshake/