String host = "localhost";
if (args.length > 0) {
host = args[0];
}
try {
InetAddress theAddress = InetAddress.getByName(host);
for (int i = 1; i < 65536; i++) {
Socket connection = null;
try {
connection = new Socket(host, i);
System.out.println("There is a server on port "
+ i + " of " + host);
}
catch (IOException ex) {
// must not be a server on this port
}
finally {
try {
if (connection != null) connection.close();
}
catch (IOException ex) {}
}
} // end for
} // end try
catch (UnknownHostException ex) {
System.err.println(ex);
}
