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From Brian Mearns <bmea...@ieee.org>
Subject [users@httpd] Etag suffixed with "-gzip" ?
Date Wed, 04 Mar 2009 20:45:49 GMT
Hey folks,

I just found that when I make a request to my server and specify
"gzip" for the "Accept-Encoding" header, The value of the "ETag"
header that gets sent back in the response includes "-gzip"
(no-quotes) appended to it, outside the quoted string. For example:

Resp_Headers<<<
ETag: "26801a-8c8-4644248a16b00"-gzip
Accept-Ranges: bytes
Vary: Accept-Encoding
Content-Encoding: gzip
>>>

Does anyone know if this is normal? I can't find anything about it in
the HTTP specification, it looks like the only there can potentially
be outside the quoted string of an entity tag is the W/ weakness
prefix: http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.11

I've also found that the server itself is not matching the tag when
the -gzip suffix is there. I.e., if I do:

HEAD /file.txt HTTP/1.1
Host: myhost
If-None-Match: "26801a-8c8-4644248a16b00"-gzip

It responds with a 200, instead of a 304 (indicating that the
specified entity tag doesn't match what it thinks the current value
is). I've tried the same with and without "Accept-Encoding: gzip", and
it behaves the same either way. If I remove the -gzip suffix, then it
responds correctly with a "304 Not Modified".

Thanks for any help,
-Brian

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