I found Chrome 7 on one of my machines so I tested it.  It works
correctly.  Also my IE8 started working after I bypassed the proxy.
So now only my Chrome9 and Safari are misbehaving.  Maybe it's a
webkit bug and not a brainless appengine user (me) that's causing the
problem.

--Steve


On Nov 3, 8:28 pm, Steve <unetright.thebas...@xoxy.net> wrote:
> Hi,
>
> I'm afraid maybe my question was not clear.  I can send the 304s with
> no problem.  My trouble is that I cannot get IE8 or Chrome9(dev) to
> send the If-None-Match header in the request.
>
> I've since installed Opera and Safari.  Opera, like Firefox, performs
> well and sends the If-None-Match.  Safari performs like Chrome and IE
> and doesn't send it.
>
> Is there some magical combination of other response headers required
> (last modified, cache control, expires??) necessecary to get IE and
> Chrome to save the etag and issue conditional requests?
>
> You mentioned Chrome 6 worked as expected.  I'll have to try
> installing an older version.  I don't have the no-cache or expires
> trouble because I'm specifically sending 'Cache-Control: public, must-
> revalidate' and removing the expires header.
>
> Thanks,
> Steve
>
> On Nov 3, 8:16 pm, 风笑雪 <kea...@gmail.com> wrote:
>
>
>
>
>
>
>
> > Just simply compare Etag and If-None-Match,then send 304 status when
> > matching, it works on Chrome 6, Firefox 3.5 and Opera 
> > 10.5:http://bitbucket.org/keakon/yui/src/tip/yui.py#cl-820
>
> > For those browsers which have no affect at all, you can try deploy to
> > app server since the dev server always send "Cache-Control: no-cache"
> > and "Expires: Fri, 01 Jan 1990 00:00:00 GMT" to prevent cache.
>
> > ----------
> > keakon
>
> > On Thu, Nov 4, 2010 at 8:26 AM, Steve <unetright.thebas...@xoxy.net> wrote:
> > > Can anyone tell me what the secret is to get Google Chrome (9/dev) or
> > > IE8 to send If-None-Match headers?  I've gone to a lot of work to
> > > organize my application so it sends ETags and short-circuits doing
> > > work when an etag matches the "If-None-Match" header.  Firefox works
> > > beautifully and I send out lots of cheap 304s.  But, I'm getting bald
> > > spots from ripping my hair out trying to get Chrome or IE to do the
> > > same.
>
> > > Has anybody conquered this before?
>
> > > Thanks!
>
> > > Steve
>
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