Tolerant applications

[EduardoRFS]

Currently httpaf doesn't accept HTTP requests using LF instead of CRLF. While this is not part of the specification it is a recommendation by the RFC below.

This doesn't blocks httpaf from working with netcat directly.

19.3 Tolerant Applications

https://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html

[anmonteiro]

I'm tempted not to fix this one because of section 9.5 - request smuggling https://datatracker.ietf.org/doc/html/rfc7230#section-9.5

[EduardoRFS]

httpaf is the outlier here, so if you're subject to differences of parsing, then not accepting \n only is actually worse.

Also it makes working with httpaf manually way more painful.