/*

 * Copyright (c) 2016, 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 8161086

 * @summary DTLS handshaking fails if some messages were lost

 * @modules java.base/sun.security.util

 * @build DTLSOverDatagram

 *

 * @run main/othervm PacketLossRetransmission client 0 hello_request

 * @run main/othervm PacketLossRetransmission client 1 client_hello

 * @run main/othervm PacketLossRetransmission client 2 server_hello

 * @run main/othervm PacketLossRetransmission client 3 hello_verify_request

 * @run main/othervm PacketLossRetransmission client 4 new_session_ticket

 * @run main/othervm PacketLossRetransmission client 11 certificate

 * @run main/othervm PacketLossRetransmission client 12 server_key_exchange

 * @run main/othervm PacketLossRetransmission client 13 certificate_request

 * @run main/othervm PacketLossRetransmission client 14 server_hello_done

 * @run main/othervm PacketLossRetransmission client 15 certificate_verify

 * @run main/othervm PacketLossRetransmission client 16 client_key_exchange

 * @run main/othervm PacketLossRetransmission client 20 finished

 * @run main/othervm PacketLossRetransmission client 21 certificate_url

 * @run main/othervm PacketLossRetransmission client 22 certificate_status

 * @run main/othervm PacketLossRetransmission client 23 supplemental_data

 * @run main/othervm PacketLossRetransmission client -1 change_cipher_spec

 * @run main/othervm PacketLossRetransmission server 0 hello_request

 * @run main/othervm PacketLossRetransmission server 1 client_hello

 * @run main/othervm PacketLossRetransmission server 2 server_hello

 * @run main/othervm PacketLossRetransmission server 3 hello_verify_request

 * @run main/othervm PacketLossRetransmission server 4 new_session_ticket

 * @run main/othervm PacketLossRetransmission server 11 certificate

 * @run main/othervm PacketLossRetransmission server 12 server_key_exchange

 * @run main/othervm PacketLossRetransmission server 13 certificate_request

 * @run main/othervm PacketLossRetransmission server 14 server_hello_done

 * @run main/othervm PacketLossRetransmission server 15 certificate_verify

 * @run main/othervm PacketLossRetransmission server 16 client_key_exchange

 * @run main/othervm PacketLossRetransmission server 20 finished

 * @run main/othervm PacketLossRetransmission server 21 certificate_url

 * @run main/othervm PacketLossRetransmission server 22 certificate_status

 * @run main/othervm PacketLossRetransmission server 23 supplemental_data

 * @run main/othervm PacketLossRetransmission server -1 change_cipher_spec

 */

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 PacketLossRetransmission extends DTLSOverDatagram {

    private static boolean isClient;

    private static byte handshakeType;

    private boolean needPacketLoss = true;

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

        isClient = args[0].equals("client");

        handshakeType = Byte.valueOf(args[1]);

        PacketLossRetransmission testCase = new PacketLossRetransmission();

        testCase.runTest(testCase);

    }

    @Override

    boolean produceHandshakePackets(SSLEngine engine, SocketAddress socketAddr,

            String side, List<DatagramPacket> packets) throws Exception {

        boolean finished = super.produceHandshakePackets(

                engine, socketAddr, side, packets);

        if (needPacketLoss && (!(isClient ^ engine.getUseClientMode()))) {

            DatagramPacket packet = getPacket(packets, handshakeType);

            if (packet != null) {

                needPacketLoss = false;

                System.out.println("Loss a packet of handshake messahe");

                packets.remove(packet);

            }

        }

        return finished;

    }

}