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  1. Sep 24, 2004
    • Bill Stoddard's avatar
      Fix Expires (freshness) handling in mod_cache. · ec28f10b
      Bill Stoddard authored 
      Previously, if the cached copy was stale, the response would go into an
indeterminate state.  Therefore, the freshness check must be done before we
'accept' the response and, if it fails (i.e.  stale), we can't allow any side
effects.

This caused a number of changes to how mod_disk_cache reads its headers as
ap_scan_script_header_err() purposely has side-effects and that's
unacceptable.  So, factor out only what we need.

Also, remove the broken conditional filter code as you can't reliably alter the
 filter list once the response is started.  (Regardless, cache_select_url()
has the freshness checks now.)

Assist to Sascha Schumann for reporting mod_cache was busted.

This commit also includes the following fix to cache_storage:
Tell mod_mem_cache that we will no longer be serving this object if it is
stale


git-svn-id: https://svn.apache.org/repos/asf/httpd/httpd/branches/APACHE_2_0_BRANCH@105283 13f79535-47bb-0310-9956-ffa450edef68
      ec28f10b
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