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Re: make standard If-Modified-Since headers
From: |
Stefan Monnier |
Subject: |
Re: make standard If-Modified-Since headers |
Date: |
Wed, 27 Feb 2008 20:46:34 -0500 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (gnu/linux) |
JR> IIRC, only a small subset of timezone names are allowed in HTTP
JR> headers, so %z would be better than %Z, or alternatively hardcode GMT:
JR> ...
JR> (format-time-string "%a, %d %b %Y %T GMT"
JR> (or specified-time (current-time)) t)
> ...
JR> In fact, RFC2616 (3.3.1) states: "All HTTP date/time stamps MUST be
JR> represented in Greenwich Mean Time (GMT), without exception. For the
JR> purposes of HTTP, GMT is exactly equal to UTC (Coordinated Universal
JR> Time)."
JR> So hardcoding GMT here is correct.
> Cool, thanks for clarifying. So the function will now read:
> (defun url-get-normalized-date (&optional specified-time)
> "Return a 'real' date string that most HTTP servers can understand."
> (let ((system-time-locale "C"))
> (format-time-string "%a, %d %b %Y %T GMT"
> (or specified-time (current-time)) t)))
> Is that OK with everyone? It needs to go into both the test release as
> a bug fix and into the CVS HEAD.
> I should still have CVS commit permissions from savannah so I can commit
> this, if it's OK with the maintainers.
Seeing how the previous code is a good bit more complex, the change
looks good.
Stefan
- Re: RSS If-Modified-Since, Ted Zlatanov, 2008/02/15
- make standard If-Modified-Since headers, jidanni, 2008/02/26
- Re: make standard If-Modified-Since headers, Ted Zlatanov, 2008/02/27
- Re: make standard If-Modified-Since headers, Thien-Thi Nguyen, 2008/02/27
- Re: make standard If-Modified-Since headers, Ted Zlatanov, 2008/02/27
- Re: make standard If-Modified-Since headers, Ted Zlatanov, 2008/02/27
- Re: make standard If-Modified-Since headers, Jason Rumney, 2008/02/27
- Re: make standard If-Modified-Since headers, Jason Rumney, 2008/02/27
- Re: make standard If-Modified-Since headers, Ted Zlatanov, 2008/02/27
- Re: make standard If-Modified-Since headers,
Stefan Monnier <=
- Re: make standard If-Modified-Since headers, Robert J. Chassell, 2008/02/27
- Re: make standard If-Modified-Since headers, Ted Zlatanov, 2008/02/28
- Re: make standard If-Modified-Since headers, Stefan Monnier, 2008/02/28
- Re: make standard If-Modified-Since headers, Ted Zlatanov, 2008/02/28
- Re: make standard If-Modified-Since headers, Miles Bader, 2008/02/28
- Re: make standard If-Modified-Since headers, Stefan Monnier, 2008/02/28
- Re: make standard If-Modified-Since headers, Ted Zlatanov, 2008/02/28
- Re: make standard If-Modified-Since headers, Reiner Steib, 2008/02/28
- Re: make standard If-Modified-Since headers, Robert J. Chassell, 2008/02/27
- Re: make standard If-Modified-Since headers, Juanma Barranquero, 2008/02/28