I am working with NB-IoT Modem - Quectel BC95 that will be used in a simple IoT sensor that will periodically (Once per hour) send measurements to our server.
Because of the restriction in place by the service operator, I can't use the hardware implementation of CoAP/M2M (Neil Messaging Protocol - as they call "it") and I am stuck with Raw UDP Messaging (Socket).
I want to keep it real simple and keep the "size" of the data at a minimum but still, be prepared that server can expect thousands of these sensors to stream data. I was thinking about just a simple JSON/CSV values inside a UDP message but have no idea if this solution is "Robust" or Secure enough.
Can you please point me into the right direction? Is there any "standardized" way to send data from IoT sensors to a server while using just a simple UDP socket and is easy to implement on the MCU side (We are very resource limited)?