aws_fota and reconnection

[Fabien Comte]

Hello,

I use aws_fota as starting point on a mobile device with MQTT reporting.

What is the best way to manage loss of connection (how to know and how to cleanly rebuild the link) when I lost connection ?

[Didrik Rokhaug]

Hi.

The modem will automatically try to reconnect to the network when the link is lost.

The application can subscribe to updates from the modem (e.g., +CEREG), but there will be a delay from the link is lost until the application is notified.

Another way the application can notice a loss of connection is that the socket is through an error on the socket. This is probably the most likely scenario in your case when performing a FOTA operation.

When you have connected back to AWS, the FOTA download will continue if you use a version newer than this pull request: https://github.com/NordicPlayground/fw-nrfconnect-nrf/pull/1626

If not, you will have to start a new FOTA job in AWS.

Best regards,

Didrik

[Fabien Comte]

Ok thank you.