Name: kaC94536 Date: 06/01/2000



The following test shows that method MulticastSocket.joinGroup throws
unexpectable exception.

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import java.io.*;
import java.net.*;

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

        soc = new MulticastSocket();
        sin = InetAddress.getByName("224.80.80.80");
        soc.joinGroup(sin);
        soc.leaveGroup(sin);
    }
}

----------------------------- output ---------------------------------

linux-8$ java -version
java version "1.3.0beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.3.0beta-b07)
Java HotSpot(TM) Client VM (build 1.3.0beta-b04, mixed mode)

linux-8$ java JoinGroup
Exception in thread "main" java.net.SocketException: error setting options
at java.net.PlainDatagramSocketImpl.join(Native Method)
at java.net.MulticastSocket.joinGroup(MulticastSocket.java:229)
at JoinGroup.main(JoinGroup.java:24)

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The following tests from regression testsuite fails due to this bug:

test/java/net/MulticastSocket/JoinGroup.java
test/java/net/MulticastSocket/Leave.java

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