Name: yyC67448 Date: 06/15/98



On Solaris x86 java.net.SocketException is always thrown when attempt is made
to leave any previously joined multicast group with
java.net.MulticastSocket.leaveGroup(InetAddress) method.

Here is the test demonstrating the bug:

-------------------------------- Test.java -----------------------------
import java.io.*;
import java.net.*;


public class test
{
  
  public static void main(String args[])
  {
    MulticastSocket soc = null;
    InetAddress sin = null;

    try {
      soc = new MulticastSocket();
      sin = InetAddress.getByName("224.80.80.80");
    } catch(Exception e)
    {
      System.out.println("Failed. Unexpected Exception : " + e);
      System.exit(-1);
    }
    
    try {
      soc.joinGroup(sin);
    } catch(Exception e)
    {
      System.out.println("Can not join group. Unexpected exception.. " + e);
      System.exit(-1);
    }

    try {
      soc.leaveGroup(sin);
    } catch(Exception e)
    {
      System.out.println("Can not leave group. Unexpected exception:" + e);
      System.exit(-1);
    }
    
    System.out.println("Passed. OKAY");
    
  }

}
 

-------------------- Output from the test on Solaris x86 ---------------
<jjb@merlin(pts/14).159> uname -a
SunOS merlin 5.6 Generic i86pc i386 i86pc

<jjb@merlin(pts/1).741> ifconfig -a
lo0: flags=849<UP,LOOPBACK,RUNNING,MULTICAST> mtu 8232
        inet 127.0.0.1 netmask ff000000
elx0: flags=863<UP,BROADCAST,NOTRAILERS,RUNNING,MULTICAST> mtu 1500
        inet xxx.xxx.xxx.xxx netmask ffffffe0 broadcast xxx.xxx.xxx.xxx

Test result:

Can not leave group. Unexpected exception:java.net.SocketException:
Inappropriate ioctl for device
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