Java Local Address Get getLocalAddr()

Description

Will try to find the local IP V4 address there is not the loopback address

License

LGPL

Exception

Parameter	Description
SocketException	local IPV4 address.

Declaration

public static InetAddress getLocalAddr() throws SocketException 

Method Source Code

//package com.java2s;
/*//from   ww w  . j  a  va2 s .  com
 * Copyrigth (C) 2010 Henrik Baastrup.
 *
 * Licensed under the GNU Lesser General Public License version 3;
 * you may not use this file except in compliance with the License.
 * You should have received a copy of the license together with this
 * file but can obtain a copy of the License at:
 *
 *       http://www.gnu.org/licenses/lgpl-3.0.txt
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

import java.net.Inet6Address;
import java.net.InetAddress;
import java.net.NetworkInterface;

import java.net.SocketException;

import java.util.Enumeration;

public class Main {
    /**
     * Will try to find the local IP V4 address there is not the loopback address
     * @return
     * @throws SocketException local IPV4 address.
     */
    public static InetAddress getLocalAddr() throws SocketException {
        Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces();
        while (interfaces.hasMoreElements()) {
            NetworkInterface dev = interfaces.nextElement();
            String devName = dev.getDisplayName();
            Enumeration<InetAddress> addresses = dev.getInetAddresses();
            while (addresses.hasMoreElements()) {
                InetAddress addr = addresses.nextElement();
                if (addr instanceof Inet6Address)
                    continue; //STUN might not be intresting with an IP V6 address
                String addrStr = addr.getHostAddress();
                if (addrStr.startsWith("127."))
                    continue;
                return addr;
            }
        }
        return null;
    }
}

Related

1. getLocalAddr()
2. getLocalAddress()
3. getLocalAddress()
4. getLocalAddress()
5. getLocalAddress()