This has been given the bug # 
http://issues.apache.org/bugzilla/show_bug.cgi?id=43478

"Rainer Jung" <[EMAIL PROTECTED]> wrote in message 
news:[EMAIL PROTECTED]
> Hi Lary,
>
> Larry Reisler wrote:
>> Thanks for your reply.  There is a holiday here right now, so I'm not
>> sure if I will be able to get to file the Bugzilla issue before the
>> holiday break.
>
> Maybe this time we are faster than our request ticketing ...
>
>> We tried a few different versions of mod_jk (the early ones had other
>> issues), but all the latest ones showed the problem.  We are
>> currently using mod_jk 1.2.25.
>>
>> In desperation, I was able to create a patch to mod_jk that seems to
>> prevent the symptom from occurring.  Here is the diff for the file
>> jk_ajp_common.c: 1742,1751d1741
>
> <         // Removing extra flush buffer if we do not need it.
> <         if (headeratclient == JK_FALSE) {
> <             int code = (int)jk_b_pget_byte(op->reply,0);
> <             unsigned int len = (unsigned int)jk_b_pget_int(op->reply,1);
> <             if ((code == JK_AJP13_SEND_BODY_CHUNK) && (len == 0)) {
> < jk_log(l, JK_LOG_DEBUG, "Received flushbuffer -- ignoring");
> < continue;
> <             }
> <         }
> <
>
> I'm a little reluctant to use your approach. It should work, but the 
> peeking for the message code and length does not belong into the get reply 
> function. The best place for the patch would be in the callback handling, 
> but there we don't know, if we already received the headers.
>
> So either we pass some additional info to the callback handling (status 
> info about the request processing stage), or we prevent the flushing 
> later. I decided to move an already existing flag "response_started" from 
> the web server private data to  the public service struct and use it 
> inside the callback handler.
>
> This patch was committted 
> (http://svn.apache.org/viewvc?view=rev&revision=579349). You can find a 
> simple download form of it under
>
> http://people.apache.org/~rjung/mod_jk-dev/patches/flush-before-header.patch
>
> The patch looks lengthy, but in fact did only small changes.
>
> It would be helpful, if you could try it with your reproduction scenario.
>
> Regards,
>
> Rainer
>
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