Re: iOS 7 update traffic

[Mark Andrews <marka () isc org>]

In message <F11FF3CF-D363-4AF0-A030-B72CD68DD988 () puck nether net>, Jared Mauch 
writes:
> On Sep 19, 2013, at 7:13 PM, Mark Andrews <marka () isc org> wrote:
>
> > Oh you mean that option that never made it past a internet-draft
> > that expired 13 years ago[1] and is in the private range[2] to boot.
> >
> > If you want proxy discovery to work on all devices complete the
> > process of getting a code point allocated then get the OS vendors
> > to query for it.  252 is fine for experimenting / proof of concept
> > but it really is the wrong value for long term use.
> >
> > Mark
> >
> > [1] http://tools.ietf.org/html/draft-ietf-wrec-wpad-01
> > [2]
> http://www.iana.org/assignments/bootp-dhcp-parameters/bootp-dhcp-parameter
> s.xhtml
> >
>
> Sure!
>
> I've found that Microsoft devices honor this option, but others do not.
>
> I would be in support of something similar to provide this support, but
> the part of my original reply you missed is that the content is
> deliberately not-cachable on the part of either the CDN or the
> originator.  Microsoft patches are also not easily cacheable as well
> because they only request about 100Kb per request, so you get an awful
> lot of HTTP/206.
>
> They also make it easier to run local caches for an enterprise.
>
> The apple process requires the full patch to come down in one-shot and
> doesn't like being interrupted.
>
> It might be easier for Warren to ship each customer a 16GB USB with the
> whole set of images for each device type.  Then again, they would have to
> know how to use them.... I know what to do, but my other family members,
> not so much...
>
> - Jared

So you fix one part at a time.  Each part is independently fixable.  Each
part helps by itself.

Mark
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka () isc org