What's this "HTTP core"? Please tell me it's just the sane parts of HTTP and without any dark corners and ambiguous specs? Please tell me it's something you can

What's this "HTTP core"? Please tell me it's just the sane parts of HTTP and without any dark corners and ambiguous specs? Please tell me it's something you can write a parser for in an hour? We're no less 10 years overdue for something like this. And if it's not that... shame.