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Spoof IP with Perl LWP

I need to write a small piece of code to simulate traffic from different source IP addresses, and I wonder if this can be done by spoofing addresses using Perl?

I tried Net :: RAWIP and it worked, but I need to send more complex HTTP traffic (namely POST data) and could not do it using RAWIP

With LWP, I tried using ua-> local_address, but I get this answer:

Can't connect to 10.x.x.x:8080

LWP::Protocol::http::Socket: Cannot assign requested address at /usr/lib/perl5/site_perl/5.10.0/LWP/Protocol/http.pm line 51.

This is the code I'm using:

#!/usr/bin/perl -w

use strict ;
use warnings ;
use LWP::UserAgent ;
use URI::URL ;

my $path = 'http://142.133.114.130:8080' ;
my $url = new URI::URL $path;
my $ua       = LWP::UserAgent->new();

$ua->local_address('10.121.132.112');
$ua->env_proxy ;
my $effing = 'blaj.jpg' ;
my $response = $ua->post( $url,
                        'Content-Type' => "multipart/form-data",
                        'Content' => [ userfile => ["$effing" ]],
                        'Connection' => 'keep-alive' ) ;
print $response->decoded_content();
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1 answer

You cannot receive a response if you send from an address that does not belong to you. This means that all you can do is send a request. You indicated that you can send, so you need to send a request. It is easy.

use strict;
use warnings;

use HTTP::Request::Common qw( POST );

my $req = POST('http://www.example.org/',
   'Content-Type' => "multipart/form-data",
   'Content'      => [ userfile => [ $0 ]],
   'Connection'   => 'keep-alive',
);

print $req->as_string();

Conclusion:

POST http://www.example.org/
Connection: keep-alive
Content-Length: 376
Content-Type: multipart/form-data; boundary=xYzZY

--xYzZY
Content-Disposition: form-data; name="userfile"; filename="x.pl"
Content-Type: text/plain

use strict;
use warnings;

use HTTP::Request::Common qw( POST );

my $req = POST('http://www.example.org/',
   'Content-Type' => "multipart/form-data",
   'Content'      => [ userfile => [ $0 ]],
   'Connection'   => 'keep-alive',
);

print $req->as_string();

--xYzZY--
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