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Re: apt with index diff support

Florian Weimer <fw@deneb.enyo.de> writes:

> * Michael Vogt:
>> When fully supported by the archive, the diff support will be
>> completely transparent, no changes on your side necessary.
> When downloading the Index file, APT does not send instructions to
> bypass the proxy cache:
> T -> [AP]
>   GET /debian/dists/experimental/main/source/Sources.diff/Index HTTP/1.1..Hos
>   t: proxy.enyo.de:9999..Connection: keep-alive..User-Agent: Debian APT-HTTP/
>   1.3....GET /debian/dists/unstable/main/binary-i386/Packages.bz2 HTTP/1.1..H
>   ost: proxy.enyo.de:9999..Connection: keep-alive..Range: bytes=246835-..If-R
>   ange: Fri, 28 Oct 2005 19:18:20 GMT..User-Agent: Debian APT-HTTP/1.3....   
> (This is with apt
> This means that apt-proxy (and probably other proxies as well) returns
> a stale copy.  Sure, this could be fixed on the proxy side, but I
> think to actually achieve the transparency you are aiming at, you have
> to implement a workaround in APT.

Doesn't the 'If-Range: Fri, 28 Oct 2005 19:18:20 GMT' mean the proxy
should query upstream? Also what is the time to live on the reply? And
shouldn't the proxy always query for an update if the TTL is gone?

I don't want to download the diff every time. Not when I update a
32 Nodes cluster over one proxy within minutes. So just plainly
baypassing the proxy seems wrong.

> (Apart from that, I can only repeated what I already wrote a couple of
> weeks ago: Nice work.)


PS: Is the index file listed in Release?

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