1 /* 2 * Copyright (c) 2015, 2019, 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 * @library /test/lib 33 * @build DTLSOverDatagram 34 * @run main/othervm Retransmission 35 */ 36 37 import java.util.List; 38 import java.util.ArrayList; 39 import java.net.DatagramPacket; 40 import java.net.SocketAddress; 41 import javax.net.ssl.SSLEngine; 42 43 /** 44 * Test that DTLS implementation is able to do retransmission internally 45 * automatically if packet get lost. 46 */ 47 public class Retransmission extends DTLSOverDatagram { 48 boolean needPacketLoss = true; 49 50 public static void main(String[] args) throws Exception { 51 Retransmission testCase = new Retransmission(); 52 testCase.runTest(testCase); 53 } 54 55 @Override 56 boolean produceHandshakePackets(SSLEngine engine, SocketAddress socketAddr, 57 String side, List<DatagramPacket> packets) throws Exception { 58 59 boolean finished = super.produceHandshakePackets( 60 engine, socketAddr, side, packets); 61 62 if (!needPacketLoss || (!engine.getUseClientMode())) { 63 return finished; 64 } 65 66 List<DatagramPacket> parts = new ArrayList<>(); 67 int lostSeq = 2; 68 for (DatagramPacket packet : packets) { 69 lostSeq--; 70 if (lostSeq == 0) { 71 needPacketLoss = false; 72 // loss this packet 73 System.out.println("Loss a packet"); 74 continue; 75 } 76 77 parts.add(packet); 78 } 79 80 packets.clear(); 81 packets.addAll(parts); 82 83 return finished; 84 } 85 }