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From Justin Erenkrantz <>
Subject Re: svn commit: r1103315 - /httpd/httpd/trunk/modules/filters/mod_deflate.c
Date Tue, 24 May 2011 17:41:03 GMT
On Mon, May 23, 2011 at 8:08 PM, Ruediger Pluem <> wrote:
> Indeed this sounds like a general problem, but
> ap_remove_output_filter does adjust r->output_filters if f->r is set and the
> filter is the first one in the chain.
> Which responses exactly suffer from this behaviour?

Use "SetOutputFilter DEFLATE" and issue a GET request for a file w/o
Accept-Encoding headers to Subversion (via mod_dav).  You'll see that
mod_deflate tries to remove itself, but mod_dav keeps invoking it.
It's at the point where most companies who support Subversion refuse
to support mod_deflate/gzip due to this issue.

HTH.  -- justin

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