/*

 * Copyright (c) 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.

 */

// SunJSSE does not support dynamic system properties, no way to re-use

// system properties in samevm/agentvm mode.

/*

 * @test

 * @bug 8043758

 * @summary Datagram Transport Layer Security (DTLS)

 * @compile DTLSOverDatagram.java

 * @run main/othervm Retransmission

 */

import java.util.List;

import java.util.ArrayList;

import java.net.DatagramPacket;

import java.net.SocketAddress;

import javax.net.ssl.SSLEngine;

/**

 * Test that DTLS implementation is able to do retransmission internally

 * automatically if packet get lost.

 */

public class Retransmission extends DTLSOverDatagram {

    boolean needPacketLoss = true;

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

        Retransmission testCase = new Retransmission();

        testCase.runTest(testCase);

    }

    @Override

    List<DatagramPacket> produceHandshakePackets(

            SSLEngine engine, SocketAddress socketAddr) throws Exception {

        List<DatagramPacket> packets =

                super.produceHandshakePackets(engine, socketAddr);

        if (!needPacketLoss || (!engine.getUseClientMode())) {

            return packets;

        }

        List<DatagramPacket> parts = new ArrayList<>();

        int lostSeq = 2;

        for (DatagramPacket packet : packets) {

            lostSeq--;

            if (lostSeq == 0) {

                needPacketLoss = false;

                // loss this packet

                System.out.println("Loss a packet");

                continue;

            }

            parts.add(packet);

        }

        return parts;

    }

}