Java Host Address Get getHostExternalAddr()

Description

get Host External Addr

License

Open Source License

Return

The host address

Declaration

public static String getHostExternalAddr() 

Method Source Code

//package com.java2s;
/*//from   ww w.j a v a  2s .co m
 * #%L
 * Active Home :: Tools
 * $Id:$
 * $HeadURL:$
 * %%
 * Copyright (C) 2016 org.active-home
 * %%
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as
 * published by the Free Software Foundation, either version 3 of the 
 * License, or (at your option) any later version.
 * 
 * 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, see
 * <http://www.gnu.org/licenses/gpl-3.0.html>.
 * #L%
 */

import java.net.InetAddress;
import java.net.NetworkInterface;
import java.net.SocketException;
import java.util.Enumeration;

public class Main {
    /**
     * @return The host address
     */
    public static String getHostExternalAddr() {
        try {
            Enumeration e = NetworkInterface.getNetworkInterfaces();

            while (e.hasMoreElements()) {
                NetworkInterface n = (NetworkInterface) e.nextElement();
                Enumeration ee = n.getInetAddresses();
                while (ee.hasMoreElements()) {
                    InetAddress i = (InetAddress) ee.nextElement();
                    if (!i.getHostAddress().startsWith("192") && !i.getHostAddress().startsWith("127")) {
                        if (!i.getHostAddress().contains(":")) {
                            return i.getHostAddress();
                        }
                    }
                }
            }
        } catch (SocketException e1) {
            e1.printStackTrace();
        }
        return "127.0.0.1";
    }
}

Related

1. getHostAddress(String hostPort)
2. getHostAddresses()
3. getHostAddresses()
4. getHostAddresses()
5. getHostAddressFromProperty(final String property)
6. getHostName(String addr)
7. getHostName(String address)
8. getHostName(String address)
9. getHostName(String localAddress)