1/* 2 * Copyright (c) 2005, 2012, 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 4924577 26 * @summary When the current RMIFailureHandler (if any) is invoked 27 * because of a server socket accept failure, if it returns false, 28 * then (in addition to the accept loop terminating) the associated 29 * server socket should be closed. The server socket should also be 30 * closed if the accept loop terminates because of an unexpected 31 * exception for which it doesn't even consult the RMIFailureHandler. 32 * @author Peter Jones 33 * 34 * @run main/othervm CloseServerSocketOnTermination 35 */ 36 37import java.io.IOException; 38import java.net.ServerSocket; 39import java.net.Socket; 40import java.rmi.Remote; 41import java.rmi.server.RMIFailureHandler; 42import java.rmi.server.RMIServerSocketFactory; 43import java.rmi.server.RMISocketFactory; 44import java.rmi.server.UnicastRemoteObject; 45import java.util.concurrent.CountDownLatch; 46import java.util.concurrent.TimeUnit; 47 48public class CloseServerSocketOnTermination { 49 50 private static long TIMEOUT = 5000; 51 52 public static void main(String[] args) throws Exception { 53 System.err.println("\nRegression test for bug 4924577\n"); 54 55 RMISocketFactory.setFailureHandler(new RMIFailureHandler() { 56 public boolean failure(Exception e) { return false; } 57 }); 58 59 tryWith(new IOException()); 60 tryWith(new NullPointerException()); 61 tryWith(new OutOfMemoryError()); 62 tryWith(new NoClassDefFoundError()); 63 tryWith(new InternalError()); 64 tryWith(new Throwable()); 65 66 System.err.println("TEST PASSED"); 67 } 68 69 private static void tryWith(Throwable t) throws Exception { 70 Remote impl = new Remote() { }; 71 try { 72 CountDownLatch latch = new CountDownLatch(1); 73 UnicastRemoteObject.exportObject(impl, 0, null, new SSF(t, latch)); 74 if (!latch.await(TIMEOUT, TimeUnit.MILLISECONDS)) { 75 throw new Error("server socket not closed"); 76 } 77 } finally { 78 UnicastRemoteObject.unexportObject(impl, true); 79 } 80 } 81 82 private static class SSF implements RMIServerSocketFactory { 83 private final Throwable acceptFailure; 84 private final CountDownLatch closedLatch; 85 SSF(Throwable acceptFailure, CountDownLatch closedLatch) { 86 this.acceptFailure = acceptFailure; 87 this.closedLatch = closedLatch; 88 } 89 public ServerSocket createServerSocket(int port) throws IOException { 90 return new ServerSocket(port) { 91 private int acceptInvocations = 0; 92 public synchronized Socket accept() throws IOException { 93 if (acceptInvocations++ == 0) { 94 throwException(acceptFailure); 95 } 96 return super.accept(); 97 } 98 public void close() throws IOException { 99 closedLatch.countDown(); 100 super.close(); 101 } 102 }; 103 } 104 105 // hack to throw an arbitrary (possibly checked) Throwable 106 private static void throwException(Throwable t) { 107 try { 108 toThrow.set(t); 109 Thrower.class.newInstance(); 110 } catch (IllegalAccessException e) { 111 throw new AssertionError(); 112 } catch (InstantiationException e) { 113 throw new AssertionError(); 114 } finally { 115 toThrow.remove(); 116 } 117 } 118 private static ThreadLocal<Throwable> toThrow = 119 new ThreadLocal<Throwable>(); 120 private static class Thrower { 121 Thrower() throws Throwable { throw toThrow.get(); } 122 } 123 } 124} 125