[jart]

thttpd has one cool cat badge icon but have you seen its critical path http parsing code?

        /* Read the MIME headers. */
        while ( ( buf = bufgets( hc ) ) != (char*) 0 )
            {
            if ( buf[0] == '\0' )
                break;
            if ( strncasecmp( buf, "Referer:", 8 ) == 0 )
                {
                cp = &buf[8];
                cp += strspn( cp, " \t" );
                hc->referrer = cp;
                }
            else if ( strncasecmp( buf, "Referrer:", 9 ) == 0 )
                {
                cp = &buf[9];
                cp += strspn( cp, " \t" );
                hc->referrer = cp;
                }
            else if ( strncasecmp( buf, "User-Agent:", 11 ) == 0 )
                {
                cp = &buf[11];
                cp += strspn( cp, " \t" );
                hc->useragent = cp;
                }
            else if ( strncasecmp( buf, "Host:", 5 ) == 0 )
                {
                cp = &buf[5];
                cp += strspn( cp, " \t" );
                hc->hdrhost = cp;

Use perfect hash tables for known http headers, because they're perfect.