Re: PAC/WPAD with Iceweasel is horribly slow

[Mike Gabriel <mike.gabriel@das-netzwerkteam.de>]

Hi Ralf,

On Mo 25 Jun 2012 20:09:54 CEST RalfGesellensetter wrote:

> Am Donnerstag, 2. Februar 2012 schrieb Petter Reinholdtsen:
> > [Petter Reinholdtsen]
> > > By moving away /etc/debian-edu/www/wpad.dat on the main server, the
> > > browser stop using the squid proxy and become responsive.  The
> > > problem is with DNS lookups and wpad handling in Firefox, which
> > > block the entire browser.
> >
> > The current wpad.dat look like this:
> >
> >   function FindProxyForURL(url, host)
> >     {
> >         if (!isResolvable(host) ||
> >             isPlainHostName(host) ||
> >             dnsDomainIs(host, ".intern"))
> >             return "DIRECT";
> >         else
> >             return "PROXY webcache:3128; DIRECT";
> >     }
> >
> > The browser seem to become quicker by changing this to a simpler one:
> >
> >   function FindProxyForURL(url, host)
> >     {
> >         return "PROXY webcache:3128; DIRECT";
> >     }
> >
> > Can you test if this help for you too?  Replace the file
> > /etc/debian-edu/www/wpad.dat with this simpler one, and see if it work
> > as you want it to.  Is it a problem to use the proxy for everything,
> > also for non-resolvable addresses and for local addresses?

> Dear Petter, dear list,
>
> this bug was reported to firefox BTS years ago, and is still there.
> https://bugzilla.mozilla.org/show_bug.cgi?id=235853#c260
>
> With Firefox 11 or later (Windows WS), colleagues experience
> regular timeouts. Well, I will try to use your alternative syntax,
> and then, we have to discuss alternatives (or contribute a patch).
>
> Kind regards
> Ralf

This feels as if you should check with your DNS provider for latency  
on DNS queries...

Mike



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