Re: gzip/squid patch

[Mark Swanson <mark@WebServiceSolutions.com>]

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On November 16, 2002 02:18 pm, Miles Elam wrote:
>
> Joe Cooper wrote:
> > Squid 2.5.STABLE1 does support Vary headers, and obeys them...so if
> > you send a vary header, older Squids won't cache it, new Squids will
> > cache it correctly.  (I think.  Henrik wrote the code, and Robert
> > spent some time on the mod_gzip/Squid-Dev lists hashing out what
> > happens when.  I can't seem to get any search results from the
> > squid-dev list right now, so I don't have a link to point to---but it
> > is definitely in the archives.)
>
> If this is the case, I think that it would make sense to only specify
> "Vary: Accept-Encoding" when the compression proc variable is non-zero.
>  After all, if the variable is zero, the content encoding never varies,
> right?  I think that is correct behavior.  If you want the header to
> always be sent, you could always turn compression on but never generate
> a *.gz on the filesystem.  This would more accurately represent the
> possibility of varying content without ever actually supplying it.
>
> Patch forthcoming and I'll try to find some web space for it so people
> can have a URL.
>
> Anything I missed or misunderstood?
>
> - Miles

OK. Vary: Accept-Encoding it is.

Based on my experience I believe only specifying the Vary header for 
compression will work properly.

I believe that's it. I'll do some more testing and if no one hears from me 
it's all good.

Cheers.

- -- 
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