[squid-users] RE: squid owa Exchange 2010 / slow load

Jan-Peter
I came across the same behaviour late last year when implementing Squid v3.0stable19 (the version which was available as part of Ubuntu 10.04LTS) as a reverse proxy for Exchange 2010 OWA and ActiveSync.

I found the browser would pause early on in the connection to OWA for approx 2 min but once this passed I could restart the browser and the pause would no longer occur. If the browser cache was cleared and the browser restarted, the pause returned.

What version of Squid are you using?

With the assistance of Amos we found the pause was due to issues with chunked Transfer-Encoding header compatibility. Amos suggested I try one of the Squid 3.1.x series due to the improved handling of this.

I changed to Squid 3.1.8 and this resolved the problem.

Regards

Paul
 
> -----Original Message-----
> From: Koopmann, Jan-Peter [mailto:Jan-Peter.Koopmann_at_seceidos.de]
> Sent: Monday, 30 May 2011 9:05 PM
> To: squid-users_at_squid-cache.org
> Subject: [squid-users] squid owa Exchange 2010 / slow load
>
> Hi,
>
> this topic came up here quite a while ago however without really finding a
> solution. We configured a squid reverse proxy for Exchange 2010 (owa,
> active-sync etc.). All is working quite well with a small exception: The
> first load of owa takes 2-3 minutes. According to firebug the time is
> spend in uglobal.js (> 2m). Once all is loaded things seem to work just
> fine. This happens with every browser I tested (IE, Firefox, Safari,
> Chrome) at least once during the initial load of the page. If you kill the
> browser and restart OWA things are ok. This does NOT happen if I address
> the Exchange server OWA in question directly, at least I was not able to
> reproduce it.
>
>
>
> Any idea where/how to look? cache.log does not say anything regarding
> this.
>
>
> Kind regards,
> JP
>
>
>
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Received on Mon May 30 2011 - 21:33:16 MDT