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.