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From "Vacelet, Manuel" <>
Subject Re: [users@httpd] Last-Modified header overridden
Date Mon, 06 Jun 2016 15:32:53 GMT
dOn Mon, Jun 6, 2016 at 5:00 PM, Vacelet, Manuel <
> wrote:

> On Mon, Jun 6, 2016 at 4:09 PM, Luca Toscano <>
> wrote:
>> I was able to repro building httpd from 2.4.x branch and following your
>> configuration files on github. I am almost sure that somewhere httpd sets
>> the Last-Modified header translating "foo" to the first Jan 1970 date. I
>> realized though that I didn't recall the real issue, since passing value
>> not following the RFC can lead to inconsistencies, so I went back and
>> checked the correspondence. Quoting:
>> "Actually I wrote this snippet to highlight the behaviour (the original
>> code sent the date in iso8601 instead of rfc1123) because it was more
>> obvious.
>> During my tests (this is extracted from an automated test suite), even
>> after having converted dates to rfc1123, I continued to get some sparse
>> errors. What I got is that the value I sent was sometimes slightly modified
>> (a second or 2) depending on the machine load."
>> So my understanding is that you would like to know why a Last-Modified
>> header with a legitimate date/time set by a PHP app gets "delayed" by a
>> couple of seconds from httpd, right?
> Yes for sure, this is the primary issue.
> However, the (undocumented) difference of behavior from one version to
> another (2.2 -> 2.4 and more surprisingly from between two 2.4 versions) is
> also in question here.
> Even more strange, 2.4 built for other distrib doesn't highlight the
> behaviour !

I made another series of test and it seems to be linked to fastcgi.

I took the stock apache (2.4.6 plus tons of patches)  & php-fpm (5.4.16 +
tons of patches) from RHEL7 and I get the exact same behaviour (headers
rewritten to EPOCH)
However, if I server the very same php script from mod_php (instead of
fcgi) it "works" (the headers are not modified).


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