1 /* 2 * Copyright (c) 2016, 2018, 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 import java.io.IOException; 25 import java.net.*; 26 import java.util.Set; 27 import static java.lang.System.out; 28 29 /* 30 * @test 31 * @bug 8143923 32 * @summary java.net socket supportedOptions set depends on call order 33 * @run main/othervm SupportedOptionsSet first 34 * @run main/othervm SupportedOptionsSet second 35 * @run main/othervm -Djava.net.preferIPv4Stack=true SupportedOptionsSet first 36 * @run main/othervm -Djava.net.preferIPv4Stack=true SupportedOptionsSet second 37 */ 38 39 // Run with othervm as the implementation of the supported options sets, once 40 // calculated, stores them in a private static fields. 41 42 public class SupportedOptionsSet { 43 main(String[] args)44 public static void main(String[] args) throws IOException { 45 if (args[0].equals("first")) 46 first(); 47 else if (args[0].equals("second")) 48 second(); 49 } 50 first()51 static void first() throws IOException { 52 try (Socket s = new Socket(); 53 ServerSocket ss = new ServerSocket(); 54 DatagramSocket ds = new DatagramSocket(); 55 MulticastSocket ms = new MulticastSocket()) { 56 57 Set<?> first = s.supportedOptions(); 58 Set<?> second = ss.supportedOptions(); 59 assertNotEqual(first, second, 60 "Socket and ServerSocket should have different options."); 61 62 first = ds.supportedOptions(); 63 second = ms.supportedOptions(); 64 assertNotEqual(first, second, 65 "DatagramSocket and MulticastSocket should have different options."); 66 } 67 } 68 69 /** Tests with the order of access to supportedOptions reversed. */ second()70 static void second() throws IOException { 71 try (ServerSocket ss = new ServerSocket(); 72 Socket s = new Socket(); 73 DatagramSocket ds = new DatagramSocket(); 74 MulticastSocket ms = new MulticastSocket()) { 75 76 Set<?> first = ss.supportedOptions(); 77 Set<?> second = s.supportedOptions(); 78 assertNotEqual(first, second, 79 "ServerSocket and Socket should have different options."); 80 81 first = ms.supportedOptions(); 82 second = ds.supportedOptions(); 83 assertNotEqual(first, second, 84 "MulticastSocket and DatagramSocket should have different options."); 85 86 } 87 } 88 assertNotEqual(Set<?> s1, Set<?> s2, String message)89 static void assertNotEqual(Set<?> s1, Set<?> s2, String message) { 90 if (s1.equals(s2)) { 91 out.println("s1: " + s1); 92 out.println("s2: " + s2); 93 throw new RuntimeException(message); 94 } 95 } 96 } 97