How do I connect to a self hosted discord, and then connect it to my friends self hosted one? And where do I get the RFC for the protocol so that I can write m

How do I connect to a self hosted discord, and then connect it to my friends self hosted one? And where do I get the RFC for the protocol so that I can write my own compatible implementation? IRC isn't a product. It's a standardized protocol sufficiently simple to implement in a day or two.