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  1. JDK
  2. JDK-7114665

java.net.BindExeception expected; Bind "succeeds" although port in use

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P4
    • Resolution: Duplicate
    • Affects Version/s: 7
    • Fix Version/s: None
    • Component/s: core-libs
    • Labels:
    • Subcomponent:
    • CPU:
      x86
    • OS:
      windows_2008

      Description

      FULL PRODUCT VERSION :
      java version "1.7.0_01"
      Java(TM) SE Runtime Environment (build 1.7.0_01-b08)
      Java HotSpot(TM) Client VM (build 21.1-b02, mixed mode, sharing)

      ADDITIONAL OS VERSION INFORMATION :
      Windows Server 2008 R2 Standard Service Pack 1

      A DESCRIPTION OF THE PROBLEM :
      When process E has bound a socket to a given port,
      an BindException is expected in process J (=java 7 VM) when trying to bind to the same port.

      Cases conforming with expectations (receiving the BindException)
         E is also a Java 7 VM

      Cases NOT conforming with expectations (receiving the BindException)
        E is a Java 6 VM or E is a C++ based program, using winsock2 calls
        




      REGRESSION. Last worked in version 6u29

      STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
      1. jre6\bin\java -jar TestBinding.jar 8500
      2. jre7\\bin\java -jar TestBinding.jar 8500



      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      java.net.BindException: Address already in use: bind
              at sun.nio.ch.Net.bind0(Native Method)
              at sun.nio.ch.Net.bind(Unknown Source)
              at sun.nio.ch.Net.bind(Unknown Source)
              at sun.nio.ch.ServerSocketChannelImpl.bind(Unknown Source)
              at sun.nio.ch.ServerSocketAdaptor.bind(Unknown Source)
              at com.barco.bg.core.server.test.TestBinding.main(TestBinding.java:35)
      ACTUAL -
      Bind on port 8500 succeeded.




      REPRODUCIBILITY :
      This bug can be reproduced always.

      ---------- BEGIN SOURCE ----------
      /* ---------------------------------------------------------------------------
       * File : TestBinding.java
       * Created : Nov 2011
       *
       * History
       */

      //package com.barco.bg.core.server.test;

      import java.nio.channels.ServerSocketChannel;
      import java.nio.channels.SocketChannel;
      import java.net.InetSocketAddress;
      import java.net.Socket;

      /**
       */
      class TestBinding
        {
        /**
         */
        public static void main (String[] args)
          {
          int port = Integer.parseInt (args [0]);

          ServerSocketChannel srvSock;

          try
            {
            byte[] msg = "TestBinding(J)".getBytes ("UTF-8");

            System.out.println ("Binding on port " + port);

            srvSock = ServerSocketChannel.open ();

            srvSock.socket ().bind (new InetSocketAddress (port), 10);

            System.out.println ("Bind on port " + port + " succeeded.");

            while (true)
              {
              SocketChannel sc = srvSock.accept ();

              if (sc != null)
                {
                Socket s = sc.socket ();

                s.getOutputStream ().write (msg);
                s.getOutputStream ().flush ( );

                s.close ();
                }
              else
                System.out.println ("accept returned null.");
              }
            }
          catch (Throwable e)
            {
            e.printStackTrace ();
            }

          } // main

        } // class TestBinding



      ---------- END SOURCE ----------

      CUSTOMER SUBMITTED WORKAROUND :
      Workaround: stick with java 6 VM.

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              Assignee:
              Unassigned Unassigned
              Reporter:
              webbuggrp Webbug Group
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