InheritTimeout.java

/*
 * Copyright (c) 2001, 2019, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

/*
 * @test
 * @bug 4508149
 * @library /test/lib
 * @summary Setting ServerSocket.setSoTimeout shouldn't cause
 *          the timeout to be inherited by accepted connections
 * @run main InheritTimeout
 * @run main/othervm -Djava.net.preferIPv4Stack=true InheritTimeout
 */

import java.net.*;
import java.io.InputStream;
import jdk.test.lib.net.IPSupport;

public class InheritTimeout {

    class Reaper extends Thread {
        Socket s;
        int timeout;

        Reaper(Socket s, int timeout) {
            this.s = s;
            this.timeout = timeout;
        }

        public void run() {
            try {
                Thread.currentThread().sleep(timeout);
                s.close();
            } catch (Exception e) {
            }
        }
    }

   InheritTimeout() throws Exception {
        InetAddress ia = InetAddress.getLocalHost();
        ServerSocket ss = new ServerSocket();
        ss.bind(new InetSocketAddress(ia, 0));
        ss.setSoTimeout(1000);

        InetSocketAddress isa =
            new InetSocketAddress(ia, ss.getLocalPort());

        // client establishes the connection
        Socket s1 = new Socket();
        s1.connect(isa);

        // receive the connection
        Socket s2 = ss.accept();

        // schedule reaper to close the socket in 5 seconds
        Reaper r = new Reaper(s2, 5000);
        r.start();

        boolean readTimedOut = false;
        try {
            s2.getInputStream().read();
        } catch (SocketTimeoutException te) {
            readTimedOut = true;
        } catch (SocketException e) {
            if (!s2.isClosed()) {
                throw e;
            }
        }

        s1.close();
        ss.close();

        if (readTimedOut) {
            throw new Exception("Unexpected SocketTimeoutException throw!");
        }
   }

   public static void main(String args[]) throws Exception {
        IPSupport.throwSkippedExceptionIfNonOperational();
        new InheritTimeout();
   }
}