From: Jeff King <peff@peff.net>
To: Jonathan Nieder <jrnieder@gmail.com>
Cc: "Max Kirillov" <max@max630.net>,
git@vger.kernel.org, "Jelmer Vernooij" <jelmer@jelmer.uk>,
"Florian Manschwetus" <manschwetus@cs-software-gmbh.de>
Subject: Re: [PATCH] http-backend: Treat empty CONTENT_LENGTH as zero
Date: Mon, 10 Sep 2018 22:30:25 -0400 [thread overview]
Message-ID: <20180911023025.GA7739@sigill.intra.peff.net> (raw)
In-Reply-To: <20180911022028.GA20518@aiede.svl.corp.google.com>
On Mon, Sep 10, 2018 at 07:20:28PM -0700, Jonathan Nieder wrote:
> Jeff King wrote:
> > On Mon, Sep 10, 2018 at 02:22:21PM -0700, Jonathan Nieder wrote:
>
> >> Thanks. I am wondering if we should go all the way and do
> >>
> >> ssize_t val;
> >> const char *str = getenv("CONTENT_LENGTH");
> >>
> >> if (!str || !*str)
> >> return 0;
> >> if (!git_parse_ssize_t(str, &val))
> >> die(...);
> >> return val;
> >>
> >> That would match the RFC, but it seems to make t5510-fetch.sh hang,
> [...]
> >> Do you know why?
> >
> > Yes. :)
> >
> > It's due to this comment in the patch you are replying to:
> >
> > + if (!str) {
> > + /*
> > + * RFC3875 says this must mean "no body", but in practice we
> > + * receive chunked encodings with no CONTENT_LENGTH. Tell the
> > + * caller to read until EOF.
> > + */
> > + val = -1;
>
> Ah! So "in practice" includes "in Apache". An old discussion[1] on
> Apache's httpd-users list agrees.
>
> The question then becomes: what does IIS do for zero-length requests?
> Does any other web server fail to support "read until EOF" in general?
>
> The CGI standard does not cover chunked encoding so we can't lean on
> the standard for advice. It's not clear to me yet whether this patch
> improves on what's in "master".
I'd note that the case in question (no CONTENT_LENGTH at all) is not
changed between this patch and master. It's only the case of
CONTENT_LENGTH set to an empty string. But I agree that it is not clear
to me whether it is actually improving anything in practice.
-Peff
next prev parent reply other threads:[~2018-09-11 2:30 UTC|newest]
Thread overview: 39+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <f12bc1d7-6acb-6ad9-2917-fbb09105f87a@debian.org>
[not found] ` <20180905202613.GA20473@blodeuwedd>
2018-09-06 6:10 ` CONTENT_LENGTH can no longer be empty Jonathan Nieder
2018-09-06 19:35 ` [PATCH] http-backend: allow empty CONTENT_LENGTH Max Kirillov
2018-09-06 21:54 ` Junio C Hamano
2018-09-07 3:27 ` Max Kirillov
2018-09-07 3:38 ` Jeff King
2018-09-07 4:20 ` Max Kirillov
2018-09-07 4:59 ` Max Kirillov
2018-09-07 9:49 ` Junio C Hamano
2018-09-08 5:41 ` Max Kirillov
2018-09-09 4:40 ` Max Kirillov
2018-09-06 22:45 ` Jonathan Nieder
2018-09-07 3:36 ` [PATCH v2] " Max Kirillov
2018-09-08 0:19 ` Jonathan Nieder
2018-09-08 5:35 ` Max Kirillov
2018-09-08 5:42 ` [PATCH v3] " Max Kirillov
2018-09-10 5:17 ` Jonathan Nieder
2018-09-10 20:36 ` Max Kirillov
2018-09-11 4:06 ` Jonathan Nieder
2018-09-11 20:33 ` [PATCH v2] http-backend test: make empty CONTENT_LENGTH test more realistic Max Kirillov
2018-09-09 4:10 ` [PATCH v4] http-backend: allow empty CONTENT_LENGTH Max Kirillov
2018-09-10 5:25 ` Jonathan Nieder
2018-09-10 13:17 ` Jeff King
2018-09-10 16:37 ` Junio C Hamano
2018-09-10 18:46 ` Jeff King
2018-09-10 20:53 ` [PATCH] http-backend: Treat empty CONTENT_LENGTH as zero Max Kirillov
2018-09-10 21:22 ` Jonathan Nieder
2018-09-11 1:55 ` Jeff King
2018-09-11 2:20 ` Jonathan Nieder
2018-09-11 2:30 ` Jeff King [this message]
2018-09-11 1:58 ` Jeff King
2018-09-11 3:42 ` [PATCH] http-backend: treat " Jonathan Nieder
2018-09-11 4:03 ` Jonathan Nieder
2018-09-11 18:15 ` Junio C Hamano
2018-09-11 18:27 ` Junio C Hamano
2018-09-12 5:56 ` Jeff King
2018-09-12 6:26 ` Jonathan Nieder
2018-09-12 16:10 ` Junio C Hamano
2018-09-11 4:18 ` Junio C Hamano
2018-09-11 4:29 ` Jonathan Nieder
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20180911023025.GA7739@sigill.intra.peff.net \
--to=peff@peff.net \
--cc=git@vger.kernel.org \
--cc=jelmer@jelmer.uk \
--cc=jrnieder@gmail.com \
--cc=manschwetus@cs-software-gmbh.de \
--cc=max@max630.net \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).