Hi everyone. I made a script for updating ip ranges. It all works fine. But I get an error at some time when the script is running. So it doesn't happen immediately. The error that I get is: "No valid response for 4th time... dying.... at C:\OTHERS\Ranges\update.pl line 23". I've searched on google, but I can't find anything about it. I hope you can help me out here.

#!usr/bin/perl
use Net::Whois::IP qw(whoisip_query);
use Net::Whois::RIPE;
use LWP::UserAgent;
use HTTP::Request;
$ua = new LWP::UserAgent;
$ua->timeout(5);
$ua->agent("Mozilla/6.0");
$url = "http://10.5.5.5/update.php";
$req = HTTP::Request->new('GET',$url);
$req->authorization_basic('admin','pass');
$res = $ua->request($req);
$content = $res->content;
@tetn1 = split(/<br>/,$content);
%seen1 = ();
%seen2 = ();
open(OUTPUT,">>updated.txt");
foreach $line1 (@tetn1) {
    next unless $line1 and not $seen1{$line1}++;
    @stuff = split(/-/,$line1);
    $stuff[0] =~ s/^\s+|\s+$//g; #ip
    $stuff[1] =~ s/^\s+|\s+$//g;
    $response = whoisip_query($stuff[0]); #line with the error
    foreach (sort keys(%{$response}) ) {
        $output = $_.":".$response->{$_};
        if ($output =~ /^netname/i) {
            @netname = split(/:/,$output);
            $netname[1] =~ s/^\s+|\s+$//g;
            next unless $output and not $seen2{$netname[1]}++;
            if ($output =~ /^netname/) {
                $whois = Net::Whois::RIPE->new("whois.ripe.net");
                foreach $inet ($whois->query($netname[1])) {
                    $outputripe = $inet->inetnum;
                    next unless $outputripe;
                    @lines = split(/-/, $outputripe);
                    $lines[0] =~ s/^\s+|\s+$//g;
                    $lines[1] =~ s/^\s+|\s+$//g;
                    print OUTPUT $lines[0]."-".$lines[1].\n";
                }
            }
        }
        elsif ($output =~ /^NetRange/) {
            @netnameus = split(/:|-/,$output);
            $netnameus[1] =~ s/^\s+|\s+$//g;
            $netnameus[2] =~ s/^\s+|\s+$//g;
            print OUTPUT $netnameus[1]."-".$netnameus[2]."\n";
        }
    }
}
close(OUTPUT);
exit;
[download]