#!/usr/bin/perl --

use strict;
use warnings;

use WWW::Mechanize 1.54;

my $ua = WWW::Mechanize->new;
$ua->add_handler("request_send",  sub {  $_[0]->content(''); $_[0]->dump; return });
$ua->add_handler("response_done", sub {  $_[0]->content(''); $_[0]->dump; return });

my $uri = URI->new('http://jigsaw.w3.org/HTTP/Basic/');
$ua->credentials( $uri->host_port, qw' test guest guest ');

$ua->get( $uri );

print "\n--- SPECIFY HOST MANUALLY ---\n";

my $host = $uri->host( $ua->res->header('Client-peer') );
$ua->get( $uri, Host => $host );

__END__
GET http://jigsaw.w3.org/HTTP/Basic/
Accept-Encoding: gzip
User-Agent: WWW-Mechanize/1.66

(no content)
HTTP/1.1 401 Unauthorized
Connection: close
Date: Tue, 05 Oct 2010 10:07:17 GMT
Server: Jigsaw/2.3.0-beta2
WWW-Authenticate: Basic realm="test"
Content-Length: 261
Content-Type: text/html;charset=ISO-8859-1
Client-Date: Tue, 05 Oct 2010 10:07:20 GMT
Client-Peer: 128.30.52.72:80
Client-Response-Num: 1
Title: Unauthorized

(no content)
GET http://jigsaw.w3.org/HTTP/Basic/
Accept-Encoding: gzip
Authorization: Basic Z3Vlc3Q6Z3Vlc3Q=
User-Agent: WWW-Mechanize/1.66

(no content)
HTTP/1.1 200 OK
Connection: close
Date: Tue, 05 Oct 2010 10:07:17 GMT
ETag: "1lkdfte:qoguo8q8"
Server: Jigsaw/2.3.0-beta2
Content-Length: 458
Content-Location: http://jigsaw.w3.org/HTTP/Basic/ok.html
Content-Type: text/html
Last-Modified: Sun, 25 Jun 2000 17:08:58 GMT
Client-Date: Tue, 05 Oct 2010 10:07:20 GMT
Client-Peer: 128.30.52.72:80
Client-Response-Num: 1
Title: Basic Authentication test page

(no content)

--- SPECIFY HOST MANUALLY ---
GET http://128.30.52.72:80/HTTP/Basic/
Accept-Encoding: gzip
Host: jigsaw.w3.org
Referer: http://jigsaw.w3.org/HTTP/Basic/
User-Agent: WWW-Mechanize/1.66

(no content)
HTTP/1.1 401 Unauthorized
Connection: close
Date: Tue, 05 Oct 2010 10:07:18 GMT
Server: Jigsaw/2.3.0-beta2
WWW-Authenticate: Basic realm="test"
Content-Length: 261
Content-Type: text/html;charset=ISO-8859-1
Client-Date: Tue, 05 Oct 2010 10:07:20 GMT
Client-Peer: 128.30.52.72:80
Client-Response-Num: 1
Title: Unauthorized

(no content)
Error GETing http://128.30.52.72:80/HTTP/Basic/: Unauthorized at  test.pl  line 20