std::regex_match recursed once per character of a status line's reason
phrase, so a server that sent one as long as a whole line overflowed the
client's stack. file_extension() and append_query_params() ran the same
kind of regex over a request path and a caller's path.
Parse all three by hand, with the same results, except that a path that
starts with '?' now gets its parameters joined with '&'. Serving a static
file no longer defers the content type lookup to keep a regex off the 304
path, so it looks the type up once.
yhirose
2e278fd6e9
