Java InetAddress Check isValidAddress(InetAddress i, boolean includeLocalAddressesInNoderefs)

Description

is Valid Address

License

GNU General Public License

Declaration

public static boolean isValidAddress(InetAddress i, boolean includeLocalAddressesInNoderefs) 

Method Source Code

//package com.java2s;
/* This code is part of Freenet. It is distributed under the GNU General
 * Public License, version 2 (or at your option any later version). See
 * http://www.gnu.org/ for further details of the GPL. */

import java.net.InetAddress;

public class Main {
    public static boolean isValidAddress(InetAddress i, boolean includeLocalAddressesInNoderefs) {
        if (i.isAnyLocalAddress()) {
            // Wildcard address, 0.0.0.0, ignore.
            return false;
        } else if (i.isLinkLocalAddress() || i.isLoopbackAddress() || i.isSiteLocalAddress()) {
            if (includeLocalAddressesInNoderefs) {
                return true;
            } else
                return false;
        } else if (i.isMulticastAddress()) {
            // Ignore
            return false;
        } else {//w w w  . j a  v a 2 s  .  c  o  m
            byte[] ipAddressBytes = i.getAddress();
            if (ipAddressBytes.length == 4 && ipAddressBytes[0] == 0) {
                return false; // First octet of IPv4 address cannot be zero as 0.0.0.0/8 has been reserved since at least RFC790 (also, Java throws an IOException when they're used)
            }
            return true;
        }
    }
}

Related

1. isThisMyIpAddress(InetAddress addr)
2. isThisMyIpAddress(InetAddress addr)
3. isUDPPortFree(int port, InetAddress addr)
4. isUnicastAddress(@CheckForNull InetAddress address)
5. isValidAddress(InetAddress address, int timeoutMs)
6. isValidAddress(InetAddress i, boolean includeLocalAddressesInNoderefs)
7. isValidCiscoWildcard(InetAddress wildcard)
8. isValidInetAddress(String address)
9. isValidInetAddress(String IP)