Here is a post i have started few years ago. First it was in bge . And my beginnings in python. With embeded code. Without univers. I ve used it without thread. Because at this stage I didn’t know about it. Then , this year one guy start bouncing on it. Creating a more advanced script/addon around it. So . I think this is a good starting point for artnet protocol.
Artnet is worldwide use in light managing on stage… hope you ll find interesting information here.
I ve commented my code to explain where the informations are placed in the packet. So it ll be a good start. I hope