> From: jslive@xxxxxxxxx [mailto:jslive@xxxxxxxxx] On Behalf Of Joshua
Slive
> Sent: Wednesday, October 10, 2007 11:02 AM
>
> On 10/10/07, Steve Bardsley <SBardsley@xxxxxxxxxx> wrote:
> > Greetings:
> >
> > I'm sending chunked, gzipped POSTs to apache and it works, but
> > occasionally loses the request body. After many hours of debug,
> > mod_deflate is suspect. Debug included using mod_ext_filter and
> > instrumenting mod_deflate with extra log messages.
> >
> > After much searching of bugzilla and the mailing lists I found this
> > thread:
> > http://thread.gmane.org/gmane.comp.apache.user/61481/focus=61516
> >
> > The last message in the thread hints at a problem:
> > "...should be fine for normal pages, but may be less than
optimal
> > for
> > things like streaming contents."
> >
> > Is mod_deflate unreliable for inflating gzipped and chunked input?
>
> What version of apache are you using? Exactly what did your debugging
> identify as the problem? Did you get error messages in the log?
>
> I've never personally tried to do this, but you'll get better help if
> you provide more details about the situation
>
Yes, I forgot the version: Apache 2.2.6 on Fedora Core 6 and Windows XP
both behave similarly.
I attempted to summarize above. I've put the hours in on this one and
have huge amounts of data, you don't want that. Here's a little more
summary:
- I'm using a simple PHP script to catch POSTed urlencoded form data.
- The client gzips the POST body and streams it to the server
(chunked).
- A single form variable contains a large set of data.
- Most of the time the form variable and its associated data is
received, but sometimes it is not.
- There is no failure indication in the log; using LogLevel debug.
- I instrumented mod_deflate.c with LOG messages.
- There is a "FIXME" comment in the code; line 953
http://svn.apache.org/viewvc/httpd/httpd/trunk/modules/filters/mod_defla
te.c?view=annotate
- It *seems* I see the problem whenever this section of code is hit.
Steve
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