Just a quick note on the successful resolution of this; it's a bug in
Apache
1.3.24 with the handling of chunked data from proxies, details here:
http://marc.theaimsgroup.com/?l=apache-httpd-dev&m=101805692511019&w=2
http://marc.theaimsgroup.com/?l=apache-httpd-dev&m=101810478231242&w=2
and there's a patch available here (or your local equivalent):
http://apache.planetmirror.com.au/dist/httpd/patches/apply_to_1.3.24/proxy_http1.1_chunking.patch
Anybody who wants to use the ProxyPass feature in a front-end Apache
1.3.24 to get to a mod_perl-enabled server should install this patch.
Thanks
Ian Macdonald
Ian Macdonald wrote:
> Hi,
>
> More info on my problem with my proxied (via Rewrite rules) mod_perl
> apache giving responses that were a) topped & tailed with message size
> and "0" respectively, and b) delayed for about 15 seconds; thanks to
> Igor S. for tipping me off that this was chunking and therefore it was a
> HTTP 1.0 vs 1.1 problem, but I still haven't managed to completely solve
> it.
>
> Short version:
>
> Can I tell my mod_perl apache to either only ever respond with 1.0 HTTP,
> or to not use chunking? (Or how do I tell my main server not to
> "promote" the version when it routes the original request to the
> mod_perl server?)
>
> Setting force-response-1.0 & downgrade-1.0 to 1 doesn't seem to work
> (completely).
>
> Long version:
>
> The problem appears to be that the browser I'm using for testing
> (Netscape 4.78 on Redhat) is issuing GET xxx 1.0 requests; these are
> recognised as perl resources and passed to the mod_perl apache but the
> new requests are like GET xxx 1.1. The mod_perl apache obediently sends
> back a chunked 1.1 answer, which the browser can't handle. As
> confirmation I tried a different test machine running Netscape 6.? and
> the aberrant behaviour disappeared. When I go straight to the mod_perl
> server by specifying the port in the URL, it works because the original
> request is 1.0 and so that is what is returned.
>
> I've tried adding "SetEnv force-response-1.0 1" and "SetEnv
> downgrade-1.0 1" in both servers config, but the only effect I've
> noticed is when I add "force-response-1.0" to the main server, the delay
> goes away; the size & 0 (ie the chunking info) still top & tail the
> response.
>
> Thanks
> Ian Macdonald
> [EMAIL PROTECTED]
