Phoenix.pm: Net::Ping Object

[Bill Nash]

Ah, okay. Other than that, standard root perms apply to the icmp sockets.
You have to run it as root, either suid or otherwise. I did an entire
monitoring suite using ICMP based probes, and it was a veritable
nightmare, especially from a security standpoint. If you find yourself
gravitating toward a solution of this type, I beg you, reconsider. =)

- billn


On Tue, 5 Feb 2002, Frooninckx Craig - cfroon wrote:

> I thought of that as well and tried it with 5, which is what the
> documentation says is the default if you don't put anything in for timeout
> (second argument on the new method or the ping method).
>
> -----Original Message-----
> From: Bill Nash [mailto:billn at billn.net]
> Sent: Tuesday, February 05, 2002 12:34 AM
> To: 'phoenix-pm-list at happyfunball.pm.org'
> Subject: Re: Phoenix.pm: Net::Ping Object
>
>
>
> If memory serves correctly (I'm a few years out from having used
> Net::Ping), it looks like you're missing the timeout value, which, if
> undefined, could result in the package reporting the host unreachable
> because the response time is > 0.
>
> - billn
>
> On Tue, 5 Feb 2002, Frooninckx Craig - cfroon wrote:
>
> > I've written a small application that is suppose to go out and ping a
> server
> > to verify that the network is still active between the local server and
> the
> > remote server.  When I do a command line ping it works fine, however, when
> I
> > use the Net::Ping object, it reports that it is unable to access the
> remote
> > server (in the code the remote server is actually the localserver).  Can
> > anyone see the bug??
> >
> > -Craig
> >
> >
> > SOURCE CODE:
> > #!/usr/bin/perl -w
> >
> > # Application to check the availibility of production servers every hour.
> >
> > use strict;
> >
> > use Net::Ping;
> > use Date::Format;
> >
> > while () {
> >         my $p = Net::Ping->new() or die "Can't create ping: $!\n";
> >         my $time = time2str( "%X", time );
> >         print "\nTime: $time\n";
> >         my $host = "127.0.0.1";
> >         print "Ping: ", $p->ping( $host ), "\n";
> >         print "$host is responding!\n" if $p->ping( $host );
> >         $p->close;
> >         sleep 60;
> > };
> >
> > __END__
> >
> > RESULTS:
> > cfroon at gsgatlas: /usr/users/cfroon/Perl => ping.pl
> >
> > Time: 10:32:20
> > Ping: 0
> > cfroon at gsgatlas: /usr/users/cfroon/Perl => ping 127.0.0.1
> > PING 127.0.0.1 (127.0.0.1): 56 data bytes
> > 64 bytes from 127.0.0.1: icmp_seq=0 ttl=64 time=0 ms
> > 64 bytes from 127.0.0.1: icmp_seq=1 ttl=64 time=0 ms
> > 64 bytes from 127.0.0.1: icmp_seq=2 ttl=64 time=0 ms
> >
> >
> > ----127.0.0.1 PING Statistics----
> > 3 packets transmitted, 3 packets received, 0% packet loss
> > round-trip (ms)  min/avg/max = 0/0/0 ms
> >
> >
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