1 /*

     2  * Copyright 2002 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  */

    23 

    24 /* @test

    25  * @bug 4530007

    26  * @summary Test if keys reported ready multiple times

    27  * @library ..

    28  */

    29 

    30 import java.net.*;

    31 import java.io.*;

    32 import java.nio.*;

    33 import java.nio.channels.*;

    34 import java.nio.charset.*;

    35 import java.nio.channels.spi.SelectorProvider;

    36 

    37 public class KeysReady {

    38 

    39     static final int DAYTIME_PORT = 13;

    40     static final String DAYTIME_HOST = TestUtil.HOST;

    41 

    42     static void test() throws Exception {

    43         InetSocketAddress isa

    44             = new InetSocketAddress(InetAddress.getByName(DAYTIME_HOST),

    45                                     DAYTIME_PORT);

    46         SocketChannel sc = SocketChannel.open();

    47         sc.configureBlocking(false);

    48         sc.connect(isa);

    49 

    50         // Prepare a selector

    51         Selector selector = SelectorProvider.provider().openSelector();

    52         SelectionKey key = sc.register(selector, SelectionKey.OP_CONNECT);

    53         int keysAdded = selector.select();

    54         if (keysAdded > 0) {

    55             keysAdded = selector.select(1000);

    56             if (keysAdded > 0)

    57                 throw new Exception("Same key reported added twice");

    58         }

    59         sc.close();

    60     }

    61 

    62     public static void main(String[] args) throws Exception {

    63         test();

    64     }

    65 

    66 }