/*

 * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.

 * 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/* @test

 * @bug 6431343

 * @summary Test that DatagramChannel.getLocalAddress returns the right local

 *    address after connect/disconnect.

 */

import java.net.*;

import java.nio.channels.DatagramChannel;

public class ChangingAddress {

    // Checks that the given DatagramSocket and DatagramChannel are bound to the

    // same local address.

    static void check(DatagramSocket ds, DatagramChannel dc) {

        InetAddress expected = ds.getLocalAddress();

        InetAddress actual = dc.socket().getLocalAddress();

        // okay if one bound to 0.0.0.0 and the other to ::0

        if ((expected.isAnyLocalAddress() != actual.isAnyLocalAddress()) &&

            !expected.equals(actual))

        {

            throw new RuntimeException("Expected: " + expected + ", actual: " + actual);

        }

    }

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

        InetAddress lh = InetAddress.getLocalHost();

        SocketAddress remote = new InetSocketAddress(lh, 1234);

        DatagramSocket ds = null;

        DatagramChannel dc = null;

        try {

            ds = new DatagramSocket();

            dc = DatagramChannel.open().bind(new InetSocketAddress(0));

            check(ds, dc);

            ds.connect(remote);

            dc.connect(remote);

            check(ds, dc);

            ds.disconnect();

            dc.disconnect();

            check(ds, dc);

            // repeat tests using socket adapter

            ds.connect(remote);

            dc.socket().connect(remote);

            check(ds, dc);

            ds.disconnect();

            dc.socket().disconnect();

            check(ds, dc);

       } finally {

            if (ds != null) ds.close();

            if (dc != null) dc.close();

       }

    }

}