/*
* NOTE: This copyright does *not* cover user programs that use HQ
* program services by normal system calls through the application
* program interfaces provided as part of the Hyperic Plug-in Development
* Kit or the Hyperic Client Development Kit - this is merely considered
* normal use of the program, and does *not* fall under the heading of
* "derived work".
*
* Copyright (C) [2004, 2005, 2006], Hyperic, Inc.
* This file is part of HQ.
*
* HQ is free software; you can redistribute it and/or modify
* it under the terms version 2 of the GNU General Public License as
* published by the Free Software Foundation. This program is distributed
* in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*/
package org.hyperic.util;
import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.Socket;
public class InetPortPinger {
private String host;
private int port;
private int timeout;
/**
* Create a new InetPortPinger object.
*
* @param host Hostname to ping
* @param port Port # to ping
* @param timeout Timeout (in ms) to wait for data, before aborting
*/
public InetPortPinger(String host, int port, int timeout) {
this.host = host;
this.port = port;
this.timeout = timeout;
}
/**
* Pings the remote host. A connection is made to the TCP port
* as specified in the constructor.
*
* @return true if connection was successful, false otherwise.
*/
public boolean check() {
try {
Socket s = new Socket();
s.bind(new InetSocketAddress(0));
s.connect(new InetSocketAddress(host, port), timeout);
s.close();
return true;
} catch (IOException e) {
return false;
}
}
public static void main(String[] args)
throws Exception
{
InetPortPinger p =
new InetPortPinger(args[0],
Integer.parseInt(args[1]),
Integer.parseInt(args[2]));
System.out.println(p.check());
}
}