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From Bart van der Schans <>
Subject Mod_cache expires check
Date Mon, 15 Jan 2007 12:56:46 GMT
In r463496 the following check was added to mod_cache.c :

    else if (exp != APR_DATE_BAD && exp < r->request_time)
        /* if a Expires header is in the past, don't cache it */
        reason = "Expires header already expired, not cacheable";

This check fails to correctly identify the expires header "Thu, 01 Jan
1970 00:00:00 GMT". The apr_date_parse_http function(exps) returns
(apr_time_t)0 which is equal to APR_DATE_BAD, but it should recognize it
as an already expired header. Is there a way to distinct between
APR_DATE_BAD and the unix epoch? Or is that considered a bad date?



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