Question

My MQTT connection to AWS IoT Core is closed after 30 minutes, regardless if the ACK is TCP/IP or AVL and nowhere in the documentation it is specified how to keep the connection longer for MQTT specifically. 

Answer 1

Hello.

To keep link open, please set open link timeout to maximum value (259200s):

https://wiki.teltonika-gps.com/view/FMC130_GPRS_settings#Records_Settings

Regards

Comments

Hi again,

The timeout it is already setup to maximum value, so that's not the issue.

As I said the question is specifically for MQTT using AWS IOT core, so you are just pointing me to the documentation that I've already read it and followed. The only solution (but I am not satisfied with it) it is to setup the network ping timeout to maximum (30 minutes) and the data sending frequency when the vehicle is stopped to 30 minutes, instead of an hour how I've had it initially.

So again, my question: how can I keep the connection open for than 30 minutes using MQTT with AWS IoT core?

Regards,

Aurel

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in this case ping is only solution, I think it is AWS server that brakes connection after timeout is reached.

When there is time to send record, device will establish new link with the server

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I know the connection is reestablished, but the connection definitely is not closed by AWS (I was using with other implementations) and I believe the box is closing the connection after network ping timeout is reached and yes, that's my question:

How is implemented the network ping for MQTT? Is sending a message to a particular topic different from <boxId>/data (because on this topic definitely is not sending any ping)?

The documentation it is really incomplete for this use case.