Assuming from your host_array that you're looking at websites, I also gather that you're interested if the web services are available. Since, as has been previously described, ping services are not always available, and ping doesn't really answer the question "Is the website accessible?", I'd recommend attempting a connection to port 80 on each box, which would at least tell you that something (hopefully a webserver) is listening.

Here's the code:
#!/usr/bin/perl -w
use strict; # always
use Socket;

my @host_array = qw( www.slashdot.org www.deja.com  www.perlmonks.org 
+);

my $proto       = 'tcp';
my $port        = 80;

foreach my $host (@host_array) {

    # open the socket
    socket(SOCK, 
       PF_INET, 
       SOCK_STREAM, 
       getprotobyname($proto)) or die "Unable to create socket!\n";

    # connect to remote site
    my $isUp = connect(SOCK,
             sockaddr_in($port,
                     inet_aton($host)));

    # print what we found out
    print "$host is ";
    print "NOT " unless $isUp;
    print "reachable.\n";
}

[download]

Cheers,
Shendal

In reply to RE: Net::Ping not working by Shendal
in thread Net::Ping not working by geektron

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