/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code 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

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

/*

 * @test

 * @bug 8133196

 * @summary test functionality of getOriginalHostName(InetAddress)

 */

import java.net.InetAddress;

public class getOriginalHostName {

    private static final JavaNetInetAddressAccess jna =

        SharedSecrets.getJavaNetInetAddressAccess();

    public static void main(String[] args) throws Exception {

        final String HOST = "dummyserver.java.net";

        InetAddress ia = null;

        ia = InetAddress.getByName(HOST);

        testInetAddress(ia, HOST);

        ia = InetAddress.getByName("255.255.255.0");

        testInetAddress(ia, null);

        ia = InetAddress.getByAddress(new byte[]{1,1,1,1});

        testInetAddress(ia, null);

        ia = InetAddress.getLocalHost();

        testInetAddress(ia, ia.getHostName());

        ia = InetAddress.getLoopbackAddress();

        testInetAddress(ia, ia.getHostName());

    }

    private static void testInetAddress(InetAddress ia, String expected)

        throws Exception {

        System.out.println("Testing InetAddress: " + ia);

        System.out.println("Expecting original hostname of : " + expected);

        String origHostName = jna.getOriginalHostName(ia);

        System.out.println("via JavaNetAccess: " + origHostName);

        if (origHostName == null && expected != null) {

            throw new RuntimeException("Unexpected null. Testing:" + expected);

        } else if (expected != null && !origHostName.equals(expected)) {

            throw new RuntimeException("Unexpected hostname :" + origHostName);

        } else if (expected == null && origHostName != null) {

            throw new RuntimeException("Unexpected origHostName: " + origHostName);

        }

    }

}