Yeah, I mean the binary message format. It's not particularly complicated to parse if you don't care to handle all the custom logic for each RRTYPE. You parse a

Yeah, I mean the binary message format. It's not particularly complicated to parse if you don't care to handle all the custom logic for each RRTYPE. You parse a fixed size header, one section with a couple fields, and up to three more sections that all have the same format. The most annoying part of the core format to implement is probably message compression, but it's fairly straightforward too as long as you're keeping the entire original message around for the duration of the parsing. I'd say just skim RFC 1035 section 4 and take a crack at it. It's a fun exercise if nothing else.