http://qs321.pair.com?node_id=363353


in reply to Re^3: Proxy Authentication
in thread Proxy Authentication

xiper,

This looked very promising and tried the code below but get the 502 error. Is their a way of establishing exactly what the proxy is objecting to? I am sure that the domain\username and password are correct.

#!/usr/local/bin/perl

use LWP::UserAgent;
use HTTP::Request;
use HTTP::Response;
use HTTP::Headers;

my $header = HTTP::Headers->new( Proxy_Authorization => 'Basic ZW1lYVx
+yYmlzc2V0OnJvbjQ1Ng==' ); 

my $ua = new LWP::UserAgent;

#$ua->proxy('http', 'http://domain\username:password@10.10.10.10:8080/
+');

$ua->proxy('http', 'http://10.10.10.10:8080/');
$ua->no_proxy('my_domain.com');

my $request = new HTTP::Request('GET', $ARGV[0], $header);

#$request->proxy_authorization_basic( 'domain\username', 'password' );

my $response = $ua->request($request);

if ($response->is_success) {
    print $response->content;
    } else {
    print $response->error_as_HTML;
}

[download]
And this is the error that I am getting 

$ perl -d ./get_url.pl http://www.google.co.uk

Loading DB routines from perl5db.pl version 1.19
Editor support available.

Enter h or `h h' for help, or `man perldebug' for more help.

main::(./get_url.pl:8): my $header = HTTP::Headers->new( Proxy_Authori
+zation => 'Basic ZW1lYVxyYmlzc2V0OnJvbjQ1Ng==' ); 
  DB<1> s
HTTP::Headers::new(/usr/local/lib/perl5/site_perl/5.8.0/HTTP/Headers.p
+m:70):
70:         my($class) = shift;
  DB<1> s
HTTP::Headers::new(/usr/local/lib/perl5/site_perl/5.8.0/HTTP/Headers.p
+m:71):
71:         my $self = bless {}, $class;
  DB<1> s
HTTP::Headers::new(/usr/local/lib/perl5/site_perl/5.8.0/HTTP/Headers.p
+m:72):
72:         $self->header(@_) if @_; # set up initial headers
  DB<1> x $header
0  undef
  DB<2> r
scalar context return from HTTP::Headers::new: 'proxy-authorization' =
+> 'Basic ZW1lYVxyYmlzc2V0OnJvbjQ1Ng=='
main::(./get_url.pl:10):        my $ua = new LWP::UserAgent;
  DB<2> r
<HTML>
<HEAD><TITLE>An Error Occurred</TITLE></HEAD>
<BODY>
<H1>An Error Occurred</H1>
502 Proxy Error ( The ISA Server denies the specified Uniform Resource
+ Locator (URL).  )
</BODY>
</HTML>
Debugged program terminated.  Use q to quit or R to restart,

[download]

Any advice appreciated.

rmb

Replies are listed 'Best First'.
Re^5: Proxy Authentication
by dada (Chaplain) on Jun 11, 2004 at 21:14 UTC
    rmb, I hope you already changed your password! if not, do it as soon as you can.

    you see, between a password in plain text in your user environment and a password base64-encoded on PerlMonks, I would prefer the first :-)

    cheers,
    Aldo King of Laziness, Wizard of Impatience, Lord of Hubris
[reply]
Re^5: Proxy Authentication
by xiper (Friar) on Jun 12, 2004 at 10:29 UTC
    Well, the code looks correct, and as eclark mentioned below, it works okay for me. It sounds like either the proxy isn't accepting your username/domain/password, or it isn't accepting the url you're giving it - look up the error code in your proxy's documentation. Make sure you can access the same page with the same credentials using a browser with the same proxy settings on the same computer. Try different url types and/or combinations of domain/username (eg, "username", "domain\username", "username@domain", "domain.suffix.com.uk\username", "username@domain.suffix.com.uk", etc).

    A good way to debug these things (as samtregar recently mentioned), is to write a small proxy using HTTP::Proxy, point your script & browser to it, and see what the difference is in the request header they send. Here's a snippit to get you started: 

    #! /usr/bin/perl

use strict;
use HTTP::Proxy qw( :log );

my $proxy = new HTTP::Proxy;

$proxy->port( 8081 );
$proxy->logfh( *STDOUT );
$proxy->logmask( ALL );
$proxy->start;

    [download]
    Good luck!

    - ><iper 

    use japh; print;

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