#!/usr/bin/perl

use warnings;
use strict;

use LWP::Online 'online';
  
my $start = time();
my $now = 0;
my $max = 30;
my $conn = 0;

while ($now < $max) {
    if ( online('http') ) {
        $conn = 1;
        last;
    }
    sleep(1);
    $now = time() - $start;    
}
die "$max seconds over. No connection. Aborting.\n" unless $conn;