/*

 * Copyright (c) 2001, 2015, 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 4503641 8130394

 * @summary Check that DatagramChannel.receive returns a new SocketAddress

 *          when it receives a packet from the same source address but

 *          different endpoint.

 */

import java.nio.*;

import java.nio.channels.*;

import java.net.*;

public class ReceiveISA {

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

        // clients

        DatagramChannel dc1 = DatagramChannel.open();

        DatagramChannel dc2 = DatagramChannel.open();

        // bind server to any port

        DatagramChannel dc3 = DatagramChannel.open();

        dc3.socket().bind((SocketAddress)null);

        // get server address

        InetAddress lh = InetAddress.getLocalHost();

        InetSocketAddress isa

            = new InetSocketAddress( lh, dc3.socket().getLocalPort() );

        ByteBuffer bb = ByteBuffer.allocateDirect(100);

        bb.put("Dia duit!".getBytes());

        bb.flip();

        dc1.send(bb, isa);      // packet 1 from dc1

        dc1.send(bb, isa);      // packet 2 from dc1

        dc2.send(bb, isa);      // packet 3 from dc1

        // receive 3 packets

        dc3.socket().setSoTimeout(1000);

        ByteBuffer rb = ByteBuffer.allocateDirect(100);

        SocketAddress sa[] = new SocketAddress[3];

        for (int i=0; i<3; i++) {

            sa[i] = dc3.receive(rb);

            System.out.println("received "+ sa[i] );

            rb.clear();

        }

        dc1.close();

        dc2.close();

        dc3.close();

        /*

         * Check that sa[0] equals sa[1] (both from dc1)

         * Check that sa[1] not equal to sa[2] (one from dc1, one from dc2)

         */

        if (!sa[0].equals(sa[1])) {

            throw new Exception("Source address for packets 1 & 2 should be equal");

        }

        if (sa[1].equals(sa[2])) {

            throw new Exception("Source address for packets 2 & 3 should be different");

        }

    }

}