@gnomon thanks so much!

> then convert those headers from DOS to unix line endings

…of fucking course line ending differences are somehow involved

@nev @gnomon It is *extremely* cursed how approximately every text-based Internet standard (HTTP, SMTP, you name it) has mandated CRLF for line endings since ... before DOS existed, probably. I think we get to thank TOPS-20 for it or something.

@scathach @nev @gnomon CRLF is a multi-byte sequence that isn't the native line ending of common platforms that server software runs on. It requires a state machine to properly recognize, often requires line ending conversion when generating or handling CRLF protocol text, and opens you up to CRLF / LF confusion attacks that have security risks (where some things generously accept LF as a line ending but other things don't realize it). And it's just annoying to deal with.