A question about ap_content_length_filter()

[Peter Wang <pt...@gmail.com>]

hi, all.

<code>
<?php
// ~/www/htdocs/v.php
header("Content-Type: text/plain");
echo str_repeat('a', intval($_GET['s']));
?>
</code>

test the php code above,
when request with "/v.php?s=8000", I got

HTTP/1.1 200 OK
Date: Tue, 09 Jun 2009 11:41:54 GMT
Server: Apache
Content-Length: 8000
Connection: close
Content-Type: text/plain

it's fine, but while request with "/v.php?s=8001", i got:

HTTP/1.1 200 OK
Date: Tue, 09 Jun 2009 11:43:09 GMT
Server: Apache
Connection: close
Transfer-Encoding: chunked
Content-Type: text/plain

so, my question is: when response size <= 8000,
the request contains a Content-Length field,
otherwise, it uses chunked.

8000 may be very specific on my server, i wonder
where can i tuning such a limit. I have tried to
change output_buffering in php.ini from 4096 to
8192 to tuning that limit, but it seems nothing changes.

thanks for your suggestions.

Re: A question about ap_content_length_filter()

[Dan Poirier <po...@pobox.com>]

Peter Wang <pt...@gmail.com> writes:

> so, my question is: when response size <= 8000,
> the request contains a Content-Length field,
> otherwise, it uses chunked.
>
> 8000 may be very specific on my server, i wonder
> where can i tuning such a limit. I have tried to
> change output_buffering in php.ini from 4096 to
> 8192 to tuning that limit, but it seems nothing changes.

Try adjusting APR_BUCKET_BUFF_SIZE in
srclib/apr-util/buckets/apr_buckets.h (no idea if that'll break
anything, but that's where the 8000 is coming from).

-- 
Dan Poirier <po...@pobox.com>

Re: A question about ap_content_length_filter()

["Akins, Brian" <Br...@turner.com>]

On 6/9/09 7:50 AM, "Peter Wang" <pt...@gmail.com> wrote:

> 8000 may be very specific on my server, i wonder
> where can i tuning such a limit.

Yes 8000 is special in the apache response streaming.

Are you using the deprecated mod_php or the supported fastcgi for php?


-- 
Brian Akins
Chief Operations Engineer
Turner Digital Media Technologies