Name: rmT116609 Date: 07/21/2004


FULL PRODUCT VERSION :
java version "1.4.2_04"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2_04-b05)
Java HotSpot(TM) Client VM (build 1.4.2_04-b05, mixed mode)


ADDITIONAL OS VERSION INFORMATION :
SunOS kupala 5.8 Generic_117000-03 sun4u sparc SUNW,Sun-Fire-15000

evo:~/tmp> uname -a
Linux dshaffer-l 2.4.21-215-smp4G #1 SMP Tue Apr 27 00:56:55 UTC 2004 i686
evo:~/tmp> cat /etc/SuSE-release
SuSE Linux 9.0 (i586)
VERSION = 9.0


A DESCRIPTION OF THE PROBLEM :
Socket channels bound to a wildcard local address do not show the actual address bound to even after a connection is established.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Compile the given program and run it.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
sock Local address is: /127.0.0.1
sockChan Local address is: /127.0.0.1
sockChan2 Local address is: /127.0.0.1
sockChan3 Local address is: /127.0.0.1


ACTUAL -
sock Local address is: /127.0.0.1
sockChan Local address is: /127.0.0.1
sockChan2 Local address is: /127.0.0.1
sockChan3 Local address is: /0:0:0:0:0:0:0:0


REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------


import java.net.*;
import java.nio.channels.SocketChannel;

public class SocketChannelTest {
    //Shows SocketChannel local address issue
    public static void main(String[] args) throws Exception{
        ServerSocket ssock = new ServerSocket(3000);

        //A standard socket behaves as expected, returning a local address of
        // "/127.0.0.1"
        Socket sock = new Socket("localhost", 3000);
        System.err.println("sock Local address is: " + sock.getLocalAddress());
        sock.close();

        //A SocketChannel with no explicit bind behaves as expected, returning a
        //local address of "/127.0.0.1"
        SocketChannel sockChan = SocketChannel.open();
        sockChan.connect(new InetSocketAddress("localhost", 3000));
        System.err.println("sockChan Local address is: " + sockChan.socket().getLocalAddress());
        sockChan.close();

        //A SocketChannel that explicitly binds an interface behaves as
        //expected, returning a local address of "/127.0.0.1"
        SocketChannel sockChan2 = SocketChannel.open();
        sockChan2.socket().bind(new InetSocketAddress("localhost", 4000));
        sockChan2.connect(new InetSocketAddress("localhost", 3000));
        System.err.println("sockChan2 Local address is: " + sockChan2.socket().getLocalAddress());
        sockChan2.close();

        //However, a SocketChannel that explicitly binds to a wildcard interface
        //does not correctly return its local address... Instead it returns
        // "/0:0:0:0:0:0:0:0"
        SocketChannel sockChan3 = SocketChannel.open();
        sockChan3.socket().bind(new InetSocketAddress(5000));
        sockChan3.connect(new InetSocketAddress("localhost", 3000));
        System.err.println("sockChan3 Local address is: " + sockChan3.socket().getLocalAddress());
        sockChan3.close();

        ssock.close();
    }
}

---------- END SOURCE ----------
(Incident Review ID: 286672)
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