| http_authentication_info_s | Structure for Authentication-Info header |
| http_content_range_s | Content-Range |
| http_cookie_s | Cookie |
| http_date_s | Date, Expires, If-Modified-Since, If-Unmodified-Since, Last-Modified |
| http_header_u | Union representing any HTTP header |
| http_host_s | Host |
| http_if_range_s | If-Range |
| http_location_s | Location, Referer |
| http_max_forwards_s | Max-Forwards |
| http_range_s | Range |
| http_request_s | HTTP request line |
| http_retry_after_s | Retry-After |
| http_s | HTTP message object |
| http_set_cookie_s | Set-Cookie |
| http_status_s | HTTP status line |
| http_te_s | TE |
| http_via_s | Via |
