https://devzone.nordicsemi.com/f/nordic-q-a/93903/case-about-mqtt-in-ncs-v2-1-2-keepalive-stateHi, sdk ncs v2.1.2 example :mqtt_sample 1. The mqtt client connects to the server 2. The mqtt server is faulty 3. The mqtt client cannot detect the server fault for a long time 4. How can mqtt clients quickly detect server faults? en-USTelligent Community 13Tue, 06 Dec 2022 10:19:50 GMThttps://devzone.nordicsemi.com/thread/399142?ContentTypeID=1Tue, 06 Dec 2022 10:19:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:bd950a56-0ba4-4b88-9a4f-32b3882351d0Didrik Rokhaug<p><span>What is the keepalive duration set to?</span></p> <p><span>How long does it take currently for the device to detect that the MQTT server is faulty? Is it tied to any event (such as sending the next data message)?<br /></span></p> <p><span>Does the application send anything to the broker? If so, what QoS is used? How often does the application send something?<br /></span></p> <p><span>Does the device use any power saving features?</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/398864?ContentTypeID=1Sat, 03 Dec 2022 06:47:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:46dbae03-cd14-411b-aac5-7df909575b8cpeter.min<p>Hi Didrik Rokhaug,</p> <p><span>A fault refers to shutting down or disconnecting the server</span></p> <p><span>The test uses the default MQTT example</span></p> <p><span></span></p> <p class="tgt color_text_0 un-step-trans" data-section="0"><span class="tgt color_text_0 highlight" data-section="0" data-sentence="0" data-group="0-0">1. Through my test, I found that it is related to the server. </span></p> <p class="tgt color_text_0 un-step-trans" data-section="1"><span class="tgt color_text_0" data-section="1" data-sentence="0" data-group="1-0">2. Which server configurations affect line disconnection detection?</span></p> <p class="tgt color_text_0 un-step-trans" data-section="1"><span class="tgt color_text_0" data-section="1" data-sentence="0" data-group="1-0">Thank&ensp;you&ensp;for&ensp;all&ensp;your&ensp;assistance.<br />Kind regards,<br />Peter.Min</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/395790?ContentTypeID=1Tue, 15 Nov 2022 13:09:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:356ea00a-3aa3-47cd-8de7-f4dafe999686Didrik Rokhaug<p>Hi,</p> <p>What do you mean with &quot;<span>The mqtt server is faulty&quot;. How is it faulty?</span></p> <p><span>What is the keepalive duration set to?</span></p> <p><span>How long does it take currently for the device to detect that the MQTT server is faulty?</span></p> <p><span>Does the application send anything to the broker? If so, what QoS is used?</span></p> <p><span>Does the device use any power saving features?</span></p> <p><span>Best regards,</span></p> <p><span>Didrik</span></p><div style="clear:both;"></div>