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SSL acces through proxy: Unable to service this URL without parent cache


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SSL acces through proxy: Unable to service this URL without parent cache
Hello,

when I try SSL access over a proxy, I get the following error message
from the proxy:


Unable to service this URL without parent cache.Contact your system
administrator.


Here is what I try to do:


#! /usr/bin/perl

use strict;
use warnings;

my $conf = {
proxy      => "http://proxy.domain.de:81",
proxy_user => "proxyuser",
proxy_pass => "proxysecret",
"ssl-authority-files" => "/etc/ssl/root.pem",

noproxy    => "localhost,localdomain",
user       => "user",
pass       => "secret",
};

{
use LWP::UserAgent;
use LWP::Debug("+", "+conns");
package EditSslAgent;

{ no strict; @ISA = qw(LWP::UserAgent); }

sub get_basic_credentials {
my ($self, $realm, $uri, $isproxy) = @_;
my ($user, $pass);
my $myrealm = sprintf ("<%s://%s> %s",
$uri->scheme(),
$uri->host_port(),
$realm);

print "request credentials $myrealm $isproxy\n";

if ($isproxy) {
$user = $conf->{"proxy_user"};
$pass = $conf->{"proxy_pass"};
} else {
$user = $conf->{"user"};
$pass = $conf->{"pass"};
}

return () unless defined $user && defined $pass;

print "provide credentials for $user\n";

return ($user, $pass);
}
}

$ENV{HTTPS_DEBUG}   = 1;
$ENV{HTTPS_CA_FILE} = $conf->{"ssl-authority-files"};
$ENV{https_proxy}   = $conf->{proxy};
$ENV{http_proxy}    = $conf->{proxy};
$ENV{ftp_proxy}     = $conf->{proxy};
$ENV{wais_proxy}    = $conf->{proxy};
$ENV{gopher_proxy}  = $conf->{proxy};
$ENV{no_proxy}      = $conf->{noproxy};

my $ua = new EditSslAgent (agent=>"Netscape/2.1");
$ua->env_proxy;
my $resp = $ua->get("https://google.de/foo/bar");
print $resp->as_string;


And here is the debug output:


LWP::UserAgent::new: ()
LWP::UserAgent::proxy: https http://proxy.domain.de:81
LWP::UserAgent::proxy: gopher http://proxy.domain.de:81
LWP::UserAgent::proxy: http http://proxy.domain.de:81
LWP::UserAgent::proxy: ftp http://proxy.domain.de:81
LWP::UserAgent::proxy: wais http://proxy.domain.de:81
LWP::UserAgent::request: ()
LWP::UserAgent::send_request: GET https://google.de/foo/bar
LWP::UserAgent::_need_proxy: Proxied to http://proxy.domain.de:81
LWP::Protocol::http::request: ()
LWP::Protocol::collect: read 460 bytes
LWP::UserAgent::request: Simple response: Internal Server Error
HTTP/1.1 500 Server Error
Connection: close
Date: Mon, 24 Apr 2008 01:22:15 GMT
Server: NetCache appliance (NetApp/6.0.6)
Content-Length: 460
Content-Type: text/html
Client-Date: Mon, 24 Apr 2008 01:23:00 GMT
Client-Peer: 192.168.1.28:81
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.Contact
 your system administrator.
</H4>
<HR>
Please contact the administrator.
Generated by proxy in domain
<p>
<td><font face="Arial,Helvetica"><font size="-2"> F proxy
U: proxyuser IP: 192.168.1.12 https://google.de/foo/bar
</font></font></td>
</BODY>
</HTML>


It looks like LWP does a GET request to the proxy instead of a
CONNECT request.

Any ideas what is going wrong here?

Report this thread to moderator Post Follow-up to this message
Old Post
Josef Wolf
05-01-08 12:49 AM

Re: SSL acces through proxy: Unable to service this URL without parent cache
On Wed, Apr 30, 2008 at 09:14:19PM +0200, Josef Wolf wrote:

Are there really no ideas what goes wrong here?

> Hello,
>
> when I try SSL access over a proxy, I get the following error message
> from the proxy:
>
>
>    Unable to service this URL without parent cache.Contact your system
>    administrator.
>
>
> Here is what I try to do:
>
>
>    #! /usr/bin/perl
>
>    use strict;
>    use warnings;
>
>    my $conf = {
>        proxy      => "http://proxy.domain.de:81",
>        proxy_user => "proxyuser",
>        proxy_pass => "proxysecret",
>        "ssl-authority-files" => "/etc/ssl/root.pem",
>
>        noproxy    => "localhost,localdomain",
>        user       => "user",
>        pass       => "secret",
>    };
>
>    {
>        use LWP::UserAgent;
>        use LWP::Debug("+", "+conns");
>        package EditSslAgent;
>
>        { no strict; @ISA = qw(LWP::UserAgent); }
>
>        sub get_basic_credentials {
>            my ($self, $realm, $uri, $isproxy) = @_;
>            my ($user, $pass);
>            my $myrealm = sprintf ("<%s://%s> %s",
>                                   $uri->scheme(),
>                                   $uri->host_port(),
>                                   $realm);
>
>            print "request credentials $myrealm $isproxy\n";
>
>            if ($isproxy) {
>                $user = $conf->{"proxy_user"};
>                $pass = $conf->{"proxy_pass"};
>            } else {
>                $user = $conf->{"user"};
>                $pass = $conf->{"pass"};
>            }
>
>            return () unless defined $user && defined $pass;
>
>            print "provide credentials for $user\n";
>
>            return ($user, $pass);
>        }
>    }
>
>    $ENV{HTTPS_DEBUG}   = 1;
>    $ENV{HTTPS_CA_FILE} = $conf->{"ssl-authority-files"};
>    $ENV{https_proxy}   = $conf->{proxy};
>    $ENV{http_proxy}    = $conf->{proxy};
>    $ENV{ftp_proxy}     = $conf->{proxy};
>    $ENV{wais_proxy}    = $conf->{proxy};
>    $ENV{gopher_proxy}  = $conf->{proxy};
>    $ENV{no_proxy}      = $conf->{noproxy};
>
>    my $ua = new EditSslAgent (agent=>"Netscape/2.1");
>    $ua->env_proxy;
>    my $resp = $ua->get("https://google.de/foo/bar");
>    print $resp->as_string;
>
>
> And here is the debug output:
>
>
>    LWP::UserAgent::new: ()
>    LWP::UserAgent::proxy: https http://proxy.domain.de:81
>    LWP::UserAgent::proxy: gopher http://proxy.domain.de:81
>    LWP::UserAgent::proxy: http http://proxy.domain.de:81
>    LWP::UserAgent::proxy: ftp http://proxy.domain.de:81
>    LWP::UserAgent::proxy: wais http://proxy.domain.de:81
>    LWP::UserAgent::request: ()
>    LWP::UserAgent::send_request: GET https://google.de/foo/bar
>    LWP::UserAgent::_need_proxy: Proxied to http://proxy.domain.de:81
>    LWP::Protocol::http::request: ()
>    LWP::Protocol::collect: read 460 bytes
>    LWP::UserAgent::request: Simple response: Internal Server Error
>    HTTP/1.1 500 Server Error
>    Connection: close
>    Date: Mon, 24 Apr 2008 01:22:15 GMT
>    Server: NetCache appliance (NetApp/6.0.6)
>    Content-Length: 460
>    Content-Type: text/html
>    Client-Date: Mon, 24 Apr 2008 01:23:00 GMT
>    Client-Peer: 192.168.1.28:81
>    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.Co
ntact your system administrator.
>    </H4>
>    <HR>
>    Please contact the administrator.
>    Generated by proxy in domain
>    <p>
>     <td><font face="Arial,Helvetica"><font size="-2"> F proxy
>      U: proxyuser IP: 192.168.1.12 https://google.de/foo/bar
>        </font></font></td>
>    </BODY>
>    </HTML>
>
>
> It looks like LWP does a GET request to the proxy instead of a
> CONNECT request.
>
> Any ideas what is going wrong here?

Report this thread to moderator Post Follow-up to this message
Old Post
Josef Wolf
05-10-08 12:46 AM

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