hi @Roalnd-Baldin and @Stefan-de-Lange

Thank you for looking into this. To give a little bit more background:

I have a temp sensor from a third party (Efento) that has its own operating system. It uses UDP to send a hexadecimal message to a server. I have a working setup with LTE-M sensors and my own server that accepts incoming UDP traffic.

I am now trying out the new (different) NB-IoT sensors with the cards from IoT creators. As the cards cannot reach public IP’s, I am trying to use the server to forward the CoAP payload to an HTTP endpoint. This is working via 172.27.131.100:15683.

Now, I look for a way to make the server acknowledge the message. I am not sure how to do this. The only thing I can think of, is sending a downlink message, but I suspect that receiving a (new) downlink message is not the same as receiving an acknowledgment, to the sensor.

Am I correct that the server is not acknowledging the message?

Kind regards,

David

It seems the collection, can be found here

Hi!

I am using a U-Blox SARA0N211 and it connects over UDP and I need the server to respond with an acknowledge message when it receives a message from the device.

I have been trying to get this working by sending a downlink message to it, however, I am not successful so far.

My supplier says to ask for: How to set the server to send CoAP 201 message

I am sure it connects over UDP (it only works when I set it up like that i.e. port 15683 and configured as UDP). Does anybody know if and how to send such an acknowledgment?

I have tried to send {“resourceValue” : “6441827684813937FF”} downlink, but that does not seem to be working…

Regards,

David

Hi all,

I am looking for the postman collection, that is referred to in many posts. Does anybody now where to download it?

Kind regards,

David