构建自己的套接字API以通过LoRaWAN发送UDP数据包

Question

I'm building a LoRa network where the server and the end-device need to communicate using a protocol which normally transmits data via UDP. Due to the fact that these two protocols act totally different I need to find a way to combine those two.

One solution I found is to create my own socket API which provides send, receive, bind, ... functions. But here I'm actually struggling.

In which scope do I need to write my socket? Is it enough to just edit the functions and rely on the other given parameters such as the address families? Or must I define my own AF and if so where/how is this achieved.

I'm looking forward to your answers / ideas.

Answer 1

According to the LoRaWAN specification and my limited experience, LoRaWAN is not suitable for such situation. If you still wanna use UDP packets over LoRaWAN, here are some tips for your question.

1. In which scope do I need to write my socket?

You may use sendUnconfirm function since this function does not need ACK from gateway. And port in LoRaWAN could play the role of bind in UDP socket.

2. Is it enough to just edit the functions and rely on the other given parameters such as the address families?

LoRaWAN server has its own features and structure. Usually, a LoRaWAN server is consist of packet_forwarder, LoRaWAN server and LoRaWAN application server. You may use these features to build you own application on LoRaWAN applicaiton server. It could save your a lot of time.

It is highly recommended to read LoRaWAN specification (Get it here) and TTN LoRaWAN wiki to help you get a better understanding in LoRaWAN.