Module http_date 

Django-shape HTTP date parser + formatter — RFC 1123 / RFC 850 / ANSI C asctime parsing per RFC 7231 §7.1.1.1; IMF-fixdate output per RFC 1123. http_date::http_date(secs) + parse_http_date(s). Django-shape HTTP date parser + formatter.

Mirrors django.utils.http.{http_date, parse_http_date} — used for Last-Modified, If-Modified-Since, If-Unmodified-Since, Expires, Date and similar HTTP date headers.

Per RFC 7231 §7.1.1.1, an HTTP server must EMIT IMF-fixdate (the RFC 1123 form) but must ACCEPT all three historical formats:

• IMF-fixdate (RFC 1123, modern preferred): "Sun, 06 Nov 1994 08:49:37 GMT"
• RFC 850 (obsolete, two-digit year, hyphenated date, weekday spelled out): "Sunday, 06-Nov-94 08:49:37 GMT"
• ANSI C asctime() (no zone, no comma): "Sun Nov 6 08:49:37 1994"

use rustango::http_date::{http_date, parse_http_date};

// Format current epoch seconds as IMF-fixdate.
let header = http_date(0);
assert_eq!(header, "Thu, 01 Jan 1970 00:00:00 GMT");

// Parse all three legacy shapes.
assert_eq!(parse_http_date("Sun, 06 Nov 1994 08:49:37 GMT"), Some(784111777));
assert_eq!(parse_http_date("Sunday, 06-Nov-94 08:49:37 GMT"), Some(784111777));
assert_eq!(parse_http_date("Sun Nov  6 08:49:37 1994"), Some(784111777));

Functions

http_date

Format a Unix timestamp (seconds since epoch) as an IMF-fixdate HTTP date header — "Sun, 06 Nov 1994 08:49:37 GMT". Django’s http_date(epoch_seconds).

parse_http_date

Parse any of the three RFC 7231 §7.1.1.1 HTTP date shapes (RFC 1123 IMF-fixdate, RFC 850, ANSI C asctime) into Unix epoch seconds. Django’s parse_http_date(s).