Using CoAP on SARA N2 NB-IoT modules

UDP packets are generally nice but there’s one thing they are: Datagrams. You can’t tell for sure that they have been delivered or when. Usually this is solved by saying “use TCP if you want flow control” but when you are working on NB-IoT modules that might not be an option. The problem If you are sending UDP packets with the SARA N2 module you generally don’t know what will happen with the data once it is sent. »