https://devzone.nordicsemi.com/f/nordic-q-a/63711/socket-communicationDear,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(&amp;fds, 1, mqtt_keepalive_time_leften-USTelligent Community 13Mon, 03 Aug 2020 07:42:08 GMThttps://devzone.nordicsemi.com/thread/262705?ContentTypeID=1Mon, 03 Aug 2020 07:42:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:e44e922b-953d-48c9-bb4d-3a94eef27087Martin Lesund<p>Hi qyj,<br />Could you please try out asset tracker from NCS v1.3.0 ?<br />or at least NCS v1.2.1, since there has been updates and fixes since v1.2.0.</p> <p></p> <p>Also I would recommend using the latest possible Modem Firmware:&nbsp;<a href="https://www.nordicsemi.com/Products/Low-power-cellular-IoT/nRF9160/Download#infotabs">https://www.nordicsemi.com/Products/Low-power-cellular-IoT/nRF9160/Download#infotabs</a></p> <p>How do you provoke a cell loss? (<em>network loss)</em></p> <p>(e.g. maybe the device just switch from one eNB (celltower) to another and therefore its no issue.)</p> <p>Please describe the issue in more details and share any log output if there are any problems.</p> <p><br />Best regards,<br />Martin L.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/260010?ContentTypeID=1Wed, 15 Jul 2020 02:59:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2ef659b9-bd9a-4beb-b36e-7ea33f8b4ca3meqyj.<p>hi sir,poll() does not return any error.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/259965?ContentTypeID=1Tue, 14 Jul 2020 15:21:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2c1e1498-9329-4cd8-974a-861faa28c1ffKenneth<p>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?</p> <p>Kenneth</p><div style="clear:both;"></div>