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 /*

    25  * @test

    26  * @bug 4712609

    27  * @summary Socket(String host, int port) throws NullPointerException if host is null

    28  */

    29 

    30 import java.net.*;

    31 import java.io.IOException;

    32 

    33 public class NullHost {

    34     class Server extends Thread {

    35         private ServerSocket svr;

    36 

    37         public Server() throws IOException {

    38             svr = new ServerSocket();

    39             svr.bind(new InetSocketAddress(0));

    40         }

    41 

    42         public int getPort() {

    43             return svr.getLocalPort();

    44         }

    45 

    46         public void shutdown() {

    47             try {

    48                 svr.close();

    49             } catch (IOException e) {

    50             }

    51         }

    52 

    53         public void run() {

    54             Socket s;

    55             try {

    56                 while (true) {

    57                     s = svr.accept();

    58                     s.close();

    59                 }

    60             } catch (IOException e) {

    61             }

    62         }

    63     }

    64 

    65     public static void main(String[] args) throws IOException {

    66         NullHost n = new NullHost();

    67     }

    68 

    69     public NullHost () throws IOException {

    70         Server s = new Server();

    71         int port = s.getPort();

    72         s.start();

    73         try {

    74             Socket sock = new Socket((String)null, port);

    75             sock.close();

    76             sock = new Socket((String)null, port, true);

    77             sock.close();

    78             sock = new Socket((String)null, port, null, 0);

    79             sock.close();

    80 

    81         } catch (NullPointerException e) {

    82             throw new RuntimeException("Got a NPE");

    83         } finally {

    84             s.shutdown();

    85         }

    86     }

    87 }