impl.underdark.transport.nsd.BnjUtil.java Source code

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Here is the source code for impl.underdark.transport.nsd.BnjUtil.java

Source

/*
 * Copyright (c) 2016 Vladimir L. Shabanov <virlof@gmail.com>
 *
 * Licensed under the Underdark License, Version 1.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://underdark.io/LICENSE.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.
 */

package impl.underdark.transport.nsd;

import org.apache.http.conn.util.InetAddressUtils;

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

import impl.underdark.logging.Logger;

public class BnjUtil {
    public static InetAddress getLocalIpAddress() {
        try {
            for (Enumeration<NetworkInterface> en = NetworkInterface.getNetworkInterfaces(); en
                    .hasMoreElements();) {
                NetworkInterface intf = en.nextElement();
                for (Enumeration<InetAddress> enumIpAddr = intf.getInetAddresses(); enumIpAddr.hasMoreElements();) {
                    InetAddress inetAddress = enumIpAddr.nextElement();

                    if (inetAddress.isLoopbackAddress())
                        continue;

                    if (!InetAddressUtils.isIPv4Address(inetAddress.getHostAddress()))
                        continue;

                    //if (!inetAddress.isLoopbackAddress() && !inetAddress.isLinkLocalAddress() && inetAddress.isSiteLocalAddress() ) {
                    //if (!inetAddress.isLoopbackAddress()
                    //      && InetAddressUtils.isIPv4Address(inetAddress.getHostAddress()) )

                    return inetAddress;
                } // for
            } // for
        } catch (SocketException ex) {
            Logger.error("nsd server failed to get local address");
        }
        return null;
    } // getLocalIpAddress()
} // BnjUtil