Received: (qmail 24602 invoked by uid 2012); 10 May 1999 04:49:26 -0000
Message-Id: <19990510044926.24601.qmail@hyperreal.org>
Date: 10 May 1999 04:49:26 -0000
From: Mark Nottingham <mnot@pobox.com>
Reply-To: mnot@pobox.com
To: apbugs@hyperreal.org
Subject: mod_expires overwrites any cache_control headers present
X-Send-Pr-Version: 3.2

>Number:         4377
>Category:       mod_expires
>Synopsis:       mod_expires overwrites any cache_control headers present
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    apache
>State:          open
>Class:          sw-bug
>Submitter-Id:   apache
>Arrival-Date:   Sun May  9 21:50:01 PDT 1999
>Last-Modified:
>Originator:     mnot@pobox.com
>Organization:
apache
>Release:        1.3.6
>Environment:
SunOS 5.6/SPARC, Linux 2.2.5, both with gcc
>Description:
If mod_expires is enabled and set to generate a header, it will also generate a
Cache-Control: max-age header. If this is done, it's impossible to set any
other Cache-Control: response headers via mod_headers, they will be silently
overwritten by the max-age header.
>How-To-Repeat:
1) build an apache: ./configure --enable-module=expires --enable-module=headers
2) put this into a .htaccess:
ExpiresActive ON
ExpiresDefault A15
Header append Cache-Control "public"
>Fix:
mod_expires should append the header, not overwrite it.
>Audit-Trail:
>Unformatted:
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