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Bug#907704: choose-mirror: default to deb.debian.org

On Wed, 2018-09-05 at 14:58 +0200, Philipp Kern wrote:
> On 2018-09-05 12:35, Wouter Verhelst wrote:
> > I disagree with that, but I do also agree that it would be preferable 
> > if
> > local proxies or mirrors were used preferably.
> > 
> > However, this shouldn't be done by way of manual configuration; 
> > instead,
> > I think it should be done by way of autodetection performed by apt,
> > something not unlike the proxy-PAC scheme, where a browser looks for
> > pac.<domain>, with the <domain> part being what was passed to it by
> > DHCP, incrementally dropping off the leaf-most part of that until it
> > resolves.
> > 
> > I think such a scheme could work for apt too.
> Arguably the correct way would be to fetch the PAC and execute it to 
> determine the proxy for the host. Of course that'd require interpreting 
> Javascript.

Indeed.  The use of Javascript makes WPAD implementation quite risky. 
There are other dangers in implementating WPAD; for example see

It could be useful, and maybe even worth enabling by default, if it was
supported in all (or at least most) of the different HTTP libraries we
ship.  But I don't think we're anywhere near there, so supporting it at
installation time only doesn't seem worth the trouble.


Ben Hutchings
I'm always amazed by the number of people who take up solipsism because
they heard someone else explain it. - E*Borg on alt.fan.pratchett

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