1 /* 2 * Copyright (c) 2001, 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 * @test 25 * @bug 4408755 26 * @summary This tests whether it's possible to get some informations 27 * out of a closed socket. This is for backward compatibility 28 * purposes. 29 * @run main TestClose 30 * @run main/othervm -Djava.net.preferIPv4Stack=true TestClose 31 */ 32 33 import java.net.*; 34 35 public class TestClose { 36 main(String[] args)37 public static void main(String[] args) throws Exception { 38 ServerSocket ss; 39 Socket s; 40 InetAddress ad1, ad2; 41 int port1, port2, serverport; 42 43 InetAddress loopback = InetAddress.getLoopbackAddress(); 44 ss = new ServerSocket(); 45 ss.bind(new InetSocketAddress(loopback, 0)); 46 serverport = ss.getLocalPort(); 47 s = new Socket(loopback, serverport); 48 s.close(); 49 ss.close(); 50 ad1 = ss.getInetAddress(); 51 if (ad1 == null) 52 throw new RuntimeException("ServerSocket.getInetAddress() returned null"); 53 port1 = ss.getLocalPort(); 54 if (port1 != serverport) 55 throw new RuntimeException("ServerSocket.getLocalPort() returned the wrong value"); 56 ad2 = s.getInetAddress(); 57 if (ad2 == null) 58 throw new RuntimeException("Socket.getInetAddress() returned null"); 59 port2 = s.getPort(); 60 if (port2 != serverport) 61 throw new RuntimeException("Socket.getPort() returned wrong value"); 62 ad2 = s.getLocalAddress(); 63 if (ad2 == null) 64 throw new RuntimeException("Socket.getLocalAddress() returned null"); 65 port2 = s.getLocalPort(); 66 if (port2 == -1) 67 throw new RuntimeException("Socket.getLocalPort returned -1"); 68 } 69 } 70