1 /*

     2  * Copyright (c) 2007, 2016, 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  6598160

    26    @summary Windows IPv6 Socket implementation doesn't set the handle to not inherit

    27    @author Chris Hegarty

    28  */

    29 

    30 import java.net.BindException;

    31 import java.net.ServerSocket;

    32 import java.io.File;

    33 import java.io.IOException;

    34 

    35 /**

    36  * This test is only really applicable to Windows machines that are running IPv6, but

    37  * it should still pass on other platforms so we can just run it.

    38  */

    39 

    40 public class InheritHandle

    41 {

    42     static String java = System.getProperty("java.home") + File.separator +

    43                          "bin" + File.separator + "java";

    44 

    45     public static void main(String[] args) {

    46         if (args.length == 1) {

    47             doWait();

    48         } else {

    49             startTest();

    50         }

    51 

    52     }

    53 

    54     static void startTest() {

    55         ServerSocket ss;

    56         int port;

    57         Process process;

    58 

    59         // create a ServerSocket listening on any port

    60         try {

    61             ss = new ServerSocket(0);

    62             port = ss.getLocalPort();

    63             System.out.println("First ServerSocket listening on port " + port);

    64         } catch (IOException e) {

    65             System.out.println("Cannot create ServerSocket");

    66             e.printStackTrace();

    67             return;

    68         }

    69 

    70         // create another java process that simply waits. If the bug is present this

    71         // process will inherit the native IPv6 handle for ss and cause the second

    72         // ServerSocket constructor to throw a BindException

    73         try {

    74             process = Runtime.getRuntime().exec(java + " InheritHandle -doWait");

    75         } catch (IOException ioe) {

    76             System.out.println("Cannot create process");

    77             ioe.printStackTrace();

    78             try {

    79                 ss.close();

    80             } catch (IOException e) {

    81                 e.printStackTrace();

    82             }

    83             return;

    84         }

    85 

    86         // Allow some time for the process to get started

    87         try {

    88             System.out.println("waiting...");

    89             Thread.sleep(2 * 1000);

    90 

    91             System.out.println("Now close the socket and try to create another" +

    92                                " one listening on the same port");

    93             ss.close();

    94             int retries = 0;

    95             while (retries < 5) {

    96                 try (ServerSocket s = new ServerSocket(port);) {

    97                     System.out.println("Second ServerSocket created successfully");

    98                     break;

    99                 } catch (BindException e) {

   100                     System.out.println("BindException \"" + e.getMessage() + "\", retrying...");

   101                     Thread.sleep(100L);

   102                     retries ++;

   103                     continue;

   104                 }

   105             }

   106 

   107         } catch (InterruptedException ie) {

   108         } catch (IOException ioe) {

   109             throw new RuntimeException("Failed: " + ioe);

   110         } finally {

   111             process.destroy();

   112         }

   113 

   114         System.out.println("OK");

   115     }

   116 

   117     static void doWait() {

   118         try {

   119             Thread.sleep(200 * 1000);

   120         } catch (InterruptedException ie) {

   121         }

   122     }

   123 }