LWP & HTTPS Problem - PARENT

dsb has asked for the wisdom of the Perl Monks concerning the following question:

Hi everybody, I'm currently using LWP to try and connect to an XML page via SSL. I do have to go through a proxy for name resolution since I'm connecting from a closed network. I get this response:

HTTP/1.1 500 Server Error
Connection: close
Date: Wed, 16 May 2007 15:23:37 GMT
Server: NetCache appliance (NetApp/5.6.1D25DEBUG3)
Content-Length: 284
Content-Type: text/html
Client-Date: Wed, 16 May 2007 15:23:38 GMT
Client-Peer: 171.182.207.166:8080
Client-Response-Num: 1
Title: 500 Server Error

<HTML>
<HEAD><TITLE>500 Server Error</TITLE></HEAD>
<BODY>
<H1>Server Error</H1>
<H4>
The following error occurred:<P>
[code=PARENT_NEEDED] Unable to service this URL without parent cache.C
+ontact your system administrator.
</H4>
<HR>
Please contact the administrator.
</BODY>
</HTML>
[download]

Information on how to resolve this, especially regarding Perl, is scarce.

I'm using Perl 5.8.8, on a Solaris 10 system, and as far as I know, all the necessary packages for SSL support (Crypt::SSLeay and OpenSSL) are installed.

The code (cleansed of real world information):

use strict;

use LWP;

my $ua = LWP::UserAgent->new();
$ua->proxy(['http', 'https'], 'http://proxy:8080');

my $req = HTTP::Request->new(GET => 'http://www.sslsite.com');
my $res = $ua->request($req);

my $content = $res->as_string;
[download]

I've tested the functionality of the proxy hitting yahoo.com so I know I can reach the web, so I'm guessing there IS an issue with the SSL Setup, i just don't know what to check.

Any help is much appreciated.

UPDATE:
After poking around some in the Crypt::SSLeay docs, I found that the proxy information needs to be provided through environment variables rather than to the UserAgent object as it is in my original code. So:

$ENV{HTTPS_PROXY} = 'http://proxy';
$ENV{HTTPS_PROXY_USERNAME} = 'user';
$ENV{HTTPS_PROXY_PASSWORD} = 'pass';
[download]

Took care of everything.

dsb
This @ISA my( $cool ) %SIG

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