Sometimes BLE stack missesout sending disconnect notification to application

[Sachin]

Hi,

  I am using nRF Connect SDK 2.02. The usage involves sending a large amount of data over the GATT profile to the Android application.

When the data transfer happens and the Android application disconnects the link, nRF Connect SDK fails to send the disconnected callback.

The sniffer logs show that Android app has sent the disconnect request over the air. Same is attached with the ticket.

Please suggest a way out to fix this issue.

nRF pcap file

Thanks

[Einar Thorsrud]

Hi,

I see the disconnect in the sniffer trace, but it does not tell us why the callback did not happen on the nRF side. Can you try to apply this fix and see if that helps?

[Sachin]

Einar Thorsrud  The fix mentioned above already exists in the SDK 2.0.2 which  I am using. This scenario is easily reproducible when Android app closes abruptly while there is a large data transfer going on 

[Einar Thorsrud]

I have not been able to reproduce or find any other reports of this. Can you provide a project that reproduce this on a DK and detailed instructions on how to use it to reproduce the issue?