Hi,
I hope somebody can help me with this because I am stumped, what I am trying to do is open a tcp connection to a given port which a game uses, to see if the host is up or down.

This isn't the problem i'm having, the socket is opened, and I am able to detect the status just as I want, the problem is when I want to close the socket connection.

Here is my code to open the socket:

$socket = IO::Socket::INET->new(PeerAddr => $host,
                                PeerPort => $port,
                                Proto    => "tcp",
                                Type     =>SOCK_STREAM,
                                Timeout  => "10")
or die "game down\n\n";

[download]

And here is what I am using to close: 

close($socket);

[download]

normally this would work.. however it has been determined that the game does not close it's connection unless it is sent a FIN bit. So if the game was to be open for 4 players and the probe was run 4 times nobody could join, and that is the smaller of the 2 problems, if the host is a Mac, and it is running OS 9 or older the entire computer goes down when they quit their game!

So basically where I am at is that I either need some method of running nmap using nmap -sS -p $port $host from perl, or of coding something that does the equivalent of it.

I apologize in advance if I did not provide enough information, any help would be greatly appreciated.

Thanks

In reply to sockets question by Losk

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