Re: PAC files

If you're working with MSIE you might like to know a little "gotcha" that I
found with auto-proxy config.

You can give the browser a choice of proxies - a primary and a failover, in
effect. Eg:
     return "PROXY proxy1:3128; PROXY proxy2:3128";

Netscape reads this as "Try proxy1 first, and if that fails, try proxy2".
For whatever zany reason, MSIE (version 4, certainly; I'm unsure about
earlier versions) reads this backwards as "Try proxy2 first, and then
proxy1". Basically it starts at the end and reads backwards :-)

To preserve sanity, I recode this as:
     return "PROXY proxy1:3128; PROXY proxy2:3128; PROXY proxy1:3128";

This achieves the desired failover protection with either major browser.

Richard Stagg

"Ounsted, Toby" <tkounste@bechtel.com>
30/10/98 09:12

To: squid-users@ircache.net
cc: (bcc: Richard Stagg/TMU/CSC)
Subject: PAC files

Hi all,
I'd like to find some examples of .pac files, specifically for configuring
MSIE browsers. Does anyone know of a good place to start looking, or do
you
have a .pac file yourself that I could have a look through in order to get
a
better idea of syntax etc..
Thanks in advance,
          Toby Ounsted
Received on Fri Oct 30 1998 - 02:58:32 MST