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Hi Jannik, Thanks a lot for some insight, it has already given me some some idea and I've already noticed that the disconnect is slow however it is not that critical in my situation. Besides that, I am confused on one thing. You said Quote from SEGGER - Jannik Urban: “If the connection gets lost (remove first switch while target is still connected to second switch), IP_MQTT_CLIENT_Publish() will not return -1. ” But, I get r < 0 regardless which switch is disconnected. To be more specific; - If …

(Hidden Content)Hello Jannik, Thank you for your reply. In fact, I have already keep-alive. If it is o, can expect a callback or something to detect/register the disconnect? Source Code (1 line) The device is not constantly aware if the network is present. I have MQTT client running. And, once a while a message is being published by a button push. I have this routine to publish Source Code (2 lines) Can I simply rely on or consider if r < 0 then the connection is lost? (Ignore mqtt releated sett…

Hello, My emNet version is V3.40. I've an issue when the network is not really there. I will explain what I mean, - I have minimum 2 network switches. - First one is connected to the local network directly. - Second one is a sitting between first switch and my custom PCB. - I power the custom PCB which has a firmware communicates with the network for several tasks. - I then remove the first network switch from the local network while the 2nd network switch is still connected to the custom PCB. A…