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12.13.2006 at 10:36AM PST, ID: 22092248
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9.4

How to find the real URL through a redireted URL?

Asked by tiger0516 in Perl Programming Language

Tags: , , ,

I am learning Perl. I have some URL like this format, www.SiteA.com/link-xxx.html. When click this URL, visitors will go to another website. In other words, link-xxx.html is either a pure HTML page with redirect or a Apache mod re-write page which also redirects to another URL. I want to use Perl to find the real URL behind the link-xxx.html. Could you please help me? Thanks (I am learning LWP now)

For example link-123.html is redirected to www.yahoo.com
I want to have a program, say domain.pl, run perl domain.pl link-123.html will give me www.yahoo.com

I first response is to write something like this:

#!/usr/bin/perl -w
use strict;
use LWP;
my $browser = LWP::UserAgent->new( );
my $response= $browser->get("http://www.toberedirectedurl.com/");...
print $ENV{'SERVER_NAME'};

There is an error: Use of uninitialized value in print at F:/workspace/domain.pl line 6.

I think I know why there is an error: ENV is my local machine's CGI's  ENV, not the remote host's. But how to fix that? In other words, how to let ENV be the response's ENV?Start Free Trial
[+][-]12.13.2006 at 11:12AM PST, ID: 18133126

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[+][-]12.13.2006 at 11:17AM PST, ID: 18133160

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[+][-]12.13.2006 at 01:52PM PST, ID: 18134361

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[+][-]12.13.2006 at 02:30PM PST, ID: 18134630

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[+][-]12.13.2006 at 05:09PM PST, ID: 18135542

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About this solution

Zone: Perl Programming Language
Tags: url, find, perl, real
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Solution Provided By: jmcg
Participating Experts: 1
Solution Grade: A
 
 
[+][-]12.13.2006 at 08:46PM PST, ID: 18136614

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