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On a I have:

ProxyPass           /public !

in order to have content under this path served as static files directly from the file system.

But it seems that the If-Modified-Since and If-None-Match aren't used.

Request headers are always:

If-Modified-Since: Mon, 02 May 2022 15:18:45 GMT
If-None-Match: "1762a-5de08e8890e5e-gzip"

Response is always 200 with payload, and these headers:

Last-Modified: Mon, 02 May 2022 15:18:45 GMT
ETag: "1762a-5de08e8890e5e-gzip"

In this case I would expect a "304 Not Modified" response?

Surely it can not still be this 14 years old issue? https://bz.apache.org/bugzilla/show_bug.cgi?id=45023

Dennis Thrysøe
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1 Answers1

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Turns out that it was the above linked issue. And since Apache 2.4 mod_deflate does not support configuring the Etag behaviour, the best solution I could find was removing -gzip from the Etag:

RequestHeader edit "If-None-Match" '^"((.*)-gzip)"$' '"$1", "$2"'
Dennis Thrysøe
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