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Re: svn commit: r1555716 -/subversion/trunk/subversion/libsvn_ra_serf/update.c

From: Branko Čibej <brane_at_wandisco.com>
Date: Thu, 09 Jan 2014 10:29:07 +0100

On 09.01.2014 10:18, Ivan Zhakov wrote:
> On 7 January 2014 18:29, Bert Huijben <bert_at_qqmail.nl> wrote:
>> On 7 January 2014 12:42, Bert Huijben <bert_at_qqmail.nl> wrote:
>>> The current code works in both scenarios (tested via buffersizes of just a
>>> few bytes, and a debugger verifyimg the corner cases, etc). But I doubt it
>>> is worth all the trouble. The file is null until something is spilled and
>>> from that point onwards everything is in the file (until the spill is
>>> empty).
>> Few bytes is bad test because memory isn't used at all in this case.
>> I've tested and code doesn't work as expected. > I used 128, 256 but didn't get a problem. The same values might also hit a
>> corner case in the spill buffer. Will look at it in a few minutes.
> Hi Bert.
> I see you already removed this optimization in r1556343. Thanks.
> But it seems there is another problem with using spillbuf for request
> bodies: create_update_report_body() callback can be called multiple
> times if request need to be resend because of authentication challenge
> or KeepAlive limit. In this case you will get empty request body on
> second invocation, because all spillbuf is already read.
> I see two options how to fix this:
> 1. Do not use spillbuf for request bodies. Use custom implementation
> based on stringbuf and temporary file if needed.
> 2. Implement svn_spillbuf__rewind() or something.
> What do you think?

Definitely implement rewind, IMO.

-- Brane

Branko Čibej | Director of Subversion
WANdisco // Non-Stop Data
e. brane_at_wandisco.com
Received on 2014-01-09 10:29:40 CET

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