Yes, thank for your reply, but note, that this method fail after some request and using the second way not, Why?

#!/usr/bin/perl

use strict;
use warnings;
use LWP::UserAgent;
use LWP::Debug qw(+);

BEGIN {
 close STDERR;
 open STDERR, '>./lwp-error.txt';
}

END { close STDERR; }

my $a=0;
my $ua = LWP::UserAgent->new;

# in some point this method fail.
while (11000 > $a++) {
my $res = $ua->get('http://www.perlmonks.com');

if ($res->is_success){
    print $res->decoded_content;
}
else {
    print "Error: " . $res->status_line . "\n";
}

}
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