Java HTTP Port Find isPortOpen(String host, int port)

Description

is Port Open

License

Open Source License

Declaration

public static boolean isPortOpen(String host, int port) 

Method Source Code

//package com.java2s;
/**//from w  w w. j  a  v  a 2s  . c  o  m
 *
 * Copyright (c) 2013, Linagora
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA 
 *
 */

import java.io.IOException;
import java.net.InetSocketAddress;
import java.net.Socket;

public class Main {
    public static final int TIMEOUT_IN_MILLISECONDS = 1000;

    public static boolean isPortOpen(String host, int port) {
        InetSocketAddress socketAddress = new InetSocketAddress(host, port);
        Socket socket = null;
        try {
            socket = new Socket();
            socket.setReuseAddress(false);
            socket.setSoLinger(false, 1);
            socket.setSoTimeout(TIMEOUT_IN_MILLISECONDS);
            socket.connect(socketAddress, TIMEOUT_IN_MILLISECONDS);

        } catch (IOException e) {
            return false;
        } finally {
            if (socket != null) {
                try {
                    socket.close();
                } catch (IOException ioe) {
                }
            }
        }
        return true;
    }
}

Related

1. isPortInUse(final String host, final Integer port)
2. isPortInUse(int port)
3. isPortOnUse(int port)
4. isPortOpen(int port)
5. isPortOpen(int port, String host)
6. isPortUsed(final int portNumber, final String host)
7. isPortUsed(int port)
8. isPortUsing(String host, int port)
9. isPortUsing(String host, int port)