Automatic Proxy Configuration SCript woes
Tommy Lindqvist
me know
the knack of it.
I have tried the following with results below.
pappa% cat test.txt
We have a network topology like below.
www.space.se ----+----- Big Bad Internet ( www.smurf.com )
|
|
Firewall ( Filters out javascripts and such )
|
|
Proxy ( wwwgate port 3128 ) ( Filters out virii )
|
|
ntweb ---+--- unixweb
|
|
Client with NT2000, IE5.5SP2
Client with NT2000, IE6
Client with NT4, IE5.5SP2
The functionality we are after should be like this
ntweb - Connect Direct
ntweb.space.se - Connect Direct
unixweb - Connect Direct
unixweb.space.se - Connect Direct
www - Proxy connect
www.space.se - Proxy connect
big.bad.int - Proxy connect
This functionality is received by using Netscape and the following
script
==============================================
Test 1:
function FindProxyForURL(url, host)
{
if ( isPlainHostName(host) ||
dnsDomainIs(host, ".space.se") ||
isInNet(host, "10.0.0.0", "255.0.0.0"))
if ( localHostOrDomainIs(host, "outer") ||
localHostOrDomainIs(host,"www") ||
localHostOrDomainIs(host,"outer.space.se") ||
localHostOrDomainIs(host,"www.space.se"))
return "PROXY wwwgate:3128";
else
return "DIRECT";
else
return "PROXY wwwgate:3128";
}
Using this, I get:
ntweb - Proxy connect
ntweb.space.se - Connect Direct
unixweb - Proxy connect
unixweb.space.se - Connect Direct
www - Proxy connect
www.space.se - Proxy connect
big.bad.int - Proxy connect
I then started to read up on microsofts webpages on the subject of
Automatic Proxy Configuration Scripts, and found teh following resource:
http://www.microsoft.com/windows/ieak/techinfo/deploy/60/en/corpexjs.htm
Using example 2 from that page I get the following:
======================================================
Test 2:
function FindProxyForURL(url, host)
{
if ((isPlainHostName(host) ||
dnsDomainIs(host, ".space.se")) &&
!localHostOrDomainIs(host, "www.space.se") &&
!localHostOrDomainIs(host, "outer.space.se"))
return "DIRECT";
else
return "PROXY wwwgate.space.se:3128";
}
Using this, I get:
ntweb - Proxy connect
ntweb.space.se - Connect Direct
unixweb - Proxy connect
unixweb.space.se - Connect Direct
www - Proxy connect
www.space.se - Proxy connect
big.bad.int - Proxy connect
Very well, Back to my search for a script that will work as advertised.
=============================================================
Using example 1 like going back to basics.
function FindProxyForURL(url, host)
{
if (isPlainHostName(host))
return "DIRECT";
else
return "PROXY wwwgate.space.se:3128";
}
Using this, I get:
ntweb - Connect Direct
ntweb.space.se - Proxy connect
unixweb - Connect Direct
unixweb.space.se - Proxy connect
www - search.msn.com ???
www.space.se - Proxy connect
big.bad.int - Proxy connect
Once again almost there. Wonder why it prefers search.msn.com
instead of using DNS for getting the IP and then getting connection
refused
instead.
On the other hand, maybe I can live with .space.se being passed to teh
proxy
server as long as I can connect to my outer webserver.
I then tried this:
=======================================================
function FindProxyForURL(url, host)
{
if (localHostOrDomainIs(host, "www.space.se"))
return "PROXY wwwgate:3128";
if (localHostOrDomainIs(host, "outer.space.se"))
return "PROXY wwwgate:3128";
if (localHostOrDomainIs(host, "www"))
return "PROXY wwwgate:3128";
if (localHostOrDomainIs(host, "outer"))
return "PROXY wwwgate:3128";
if (isPlainHostName(host))
return "DIRECT";
return "PROXY wwwgate.space.se:3128";
}
Using this, I get:
ntweb - proxy connect
ntweb.space.se - Proxy connect
unixweb - Proxy connect
unixweb.space.se - Proxy connect
www - Proxy connect
www.space.se - Proxy connect
big.bad.int - Proxy connect
}
Using this, I get:
ntweb - Connect Direct
ntweb.space.se - Proxy connect
unixweb - Connect Direct
unixweb.space.se - Proxy connect
www - search.msn.com ???
www.space.se - Proxy connect
big.bad.int - Proxy connect
Once again almost there. Wonder why it prefers search.msn.com
instead of using DNS for getting the IP and then getting connection
refused
instead.
On the other hand, maybe I can live with .space.se being passed to teh
proxy
server as long as I can connect to my outer webserver.
I then tried this:
=======================================================
function FindProxyForURL(url, host)
{
if (localHostOrDomainIs(host, "www.space.se"))
return "PROXY wwwgate:3128";
if (localHostOrDomainIs(host, "outer.space.se"))
return "PROXY wwwgate:3128";
if (localHostOrDomainIs(host, "www"))
return "PROXY wwwgate:3128";
if (localHostOrDomainIs(host, "outer"))
return "PROXY wwwgate:3128";
if (isPlainHostName(host))
return "DIRECT";
return "PROXY wwwgate.space.se:3128";
}
Using this, I get:
ntweb - proxy connect
ntweb.space.se - Proxy connect
unixweb - Proxy connect
unixweb.space.se - Proxy connect
www - Proxy connect
www.space.se - Proxy connect
big.bad.int - Proxy connect
Ooops, not really what I wanted. Just broke the application based on
ActiveX.
Wonder why.
======================================
Ugly hack # 1
function FindProxyForURL(url, host)
{
if (isPlainHostName(host) &&
!localHostOrDomainIs(host, "www.space.se") &&
!localHostOrDomainIs(host, "outer.space.se"))
return "DIRECT";
else if (dnsDomainIs(host, ".space.se") &&
!localHostOrDomainIs(host, "www.space.se") &&
!localHostOrDomainIs(host, "outer.space.se"))
return "DIRECT";
else
return "PROXY wwwgate.space.se:3128";
}
Using this, I get:
ntweb - proxy connect
ntweb.space.se - Connect direct
unixweb - Proxy connect
unixweb.space.se - Connect direct
www - Proxy connect
www.space.se - Proxy connect
big.bad.int - Proxy connect
Not exactly what I had expected. That's it. I am at wits end here.
ANyone
care to come up with a solution that works as advertised ??
Tommy
( t o m m y . l i n d q v i s t @ s p a c e . s e )