Java InetAddress Check isMulticastAddress(InetAddress ipAddr)

Description

is Multicast Address

License

Open Source License

Declaration

public static boolean isMulticastAddress(InetAddress ipAddr) 

Method Source Code

//package com.java2s;
/*/*from ww  w.j  av  a 2 s  . c om*/
 * NetUtils.java
 *
 * This file is part of the IHMC Util Library
 * Copyright (c) 1993-2016 IHMC.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 3 (GPLv3) as published by the Free Software Foundation.
 *
 * U.S. Government agencies and organizations may redistribute
 * and/or modify this program under terms equivalent to
 * "Government Purpose Rights" as defined by DFARS 
 * 252.227-7014(a)(12) (February 2014).
 *
 * Alternative licenses that allow for use within commercial products may be
 * available. Contact Niranjan Suri at IHMC (nsuri@ihmc.us) for details.
 */

import java.net.InetAddress;

public class Main {
    public static boolean isMulticastAddress(String ipAddr) {
        try {
            return isMulticastAddress(InetAddress.getByName(ipAddr));
        } catch (Exception e) {
            return false;
        }
    }

    public static boolean isMulticastAddress(InetAddress ipAddr) {
        int firstOctet = ipAddr.getAddress()[0];
        if (firstOctet < 0) {
            firstOctet += 255;
        }
        return ((firstOctet >= 224) && (firstOctet < 240));
    }
}

Related

1. isLocalAddress(InetAddress address)
2. isLocalIP(final InetAddress ip1, final InetAddress ip2, final int mask)
3. isLocalIpAddress(final InetAddress ipAddress)
4. isLoopbackAddress(InetAddress address)
5. isLoopbackIp(InetAddress addr)
6. isOnNetwork(InetAddress host, InetAddress network, byte[] mask)
7. isPortFree(int port, InetAddress addr)
8. isPortInUse(InetAddress address, int port, int count)
9. isPortOpen(InetAddress address, int port)