yup, its seem fairly doable and the issue has been raised to our ops team. 
we're waiting to hear back about what's necessary in order to make it work.

--tomasz 

On Aug 20, 2010, at 3:59 PM, Platonides wrote:

> Brion Vibber wrote:
>> However, we can't just use a User-Agent check in PHP for this, since
>> 90-something percent of the time the PHP scripts are not being executed: the
>> Squid caches respond to most web requests directly.
>> 
>> So what would be required would be some filtering in the caches to check for
>> particular User-Agents or other settings and send them the redirect
>> directly, or send them through to PHP for possible redirection. (Assuming
>> there's no problem with downstream caching, which I think should usually be
>> ok the way we have things marked -- as long as the redirect responses are
>> marked as private-cache or uncacheable.)
>> 
>> A JavaScript hack was quicker to put in place than the cache-level logic,
>> but it was only ever meant as a stopgap.
>> 
>> -- brion vibber (brion @ pobox.com)
> 
> I was precisely thinking on this the other day. The javascript is just
> doing a regex on the user agent, and squid is perfectly capable of doing
> that.
> 
> 
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