SOCKET communication

[meqyj.]

Dear,nordic:

• Please help me solve the socket communication process encountered in the exception

        SDK : ncs v1.2;

        samples : asset tracker;

        path : ncs\v1.2.0\nrf\applications\asset_tracker;

        function : poll(&fds, 1, mqtt_keepalive_time_left(&client));

        issue : when the base cell was lost,it didn't report anything to me,i need the event as POLLERR.

[Kenneth]

Such events should be notified by modem FW or bdslib, not sure which of them though. I can try to look into it, but expect delayed reply due to summer holidays. Does poll() return any error?

Kenneth

[meqyj.]

hi sir,poll() does not return any error.

[Martin Lesund]

Hi qyj,
Could you please try out asset tracker from NCS v1.3.0 ?
or at least NCS v1.2.1, since there has been updates and fixes since v1.2.0.

Also I would recommend using the latest possible Modem Firmware: https://www.nordicsemi.com/Products/Low-power-cellular-IoT/nRF9160/Download#infotabs

How do you provoke a cell loss? (network loss)

(e.g. maybe the device just switch from one eNB (celltower) to another and therefore its no issue.)

Please describe the issue in more details and share any log output if there are any problems.

Best regards,
Martin L.