I really didn't want to go all the way back to the dark ages just to get the correct underlying packet format. At that point I'd almost rather use the SINS codebase.
FWIW i've gotten it all tied together to get the datastream, and process the packets into opcode payload formatted app packets, but I've run into a snag on the encryption. I'm either missing something, or secrets has an additional branch they apply that isn't public containing modified crypt code.