1/* 2 * Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24// SunJSSE does not support dynamic system properties, no way to re-use 25// system properties in samevm/agentvm mode. 26 27/* 28 * @test 29 * @bug 8043758 30 * @summary Datagram Transport Layer Security (DTLS) 31 * @modules java.base/sun.security.util 32 * @build DTLSOverDatagram 33 * @run main/othervm Retransmission 34 */ 35 36import java.util.List; 37import java.util.ArrayList; 38import java.net.DatagramPacket; 39import java.net.SocketAddress; 40import javax.net.ssl.SSLEngine; 41 42/** 43 * Test that DTLS implementation is able to do retransmission internally 44 * automatically if packet get lost. 45 */ 46public class Retransmission extends DTLSOverDatagram { 47 boolean needPacketLoss = true; 48 49 public static void main(String[] args) throws Exception { 50 Retransmission testCase = new Retransmission(); 51 testCase.runTest(testCase); 52 } 53 54 @Override 55 boolean produceHandshakePackets(SSLEngine engine, SocketAddress socketAddr, 56 String side, List<DatagramPacket> packets) throws Exception { 57 58 boolean finished = super.produceHandshakePackets( 59 engine, socketAddr, side, packets); 60 61 if (!needPacketLoss || (!engine.getUseClientMode())) { 62 return finished; 63 } 64 65 List<DatagramPacket> parts = new ArrayList<>(); 66 int lostSeq = 2; 67 for (DatagramPacket packet : packets) { 68 lostSeq--; 69 if (lostSeq == 0) { 70 needPacketLoss = false; 71 // loss this packet 72 System.out.println("Loss a packet"); 73 continue; 74 } 75 76 parts.add(packet); 77 } 78 79 packets.clear(); 80 packets.addAll(parts); 81 82 return finished; 83 } 84} 85