The test above shows the issues logged in JDK-8231258, JDK-8231259, JDK-8231260.
19-09-2019
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*
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* version 2 for more details (a copy is included in the LICENSE file that
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*
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* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
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*/
/* @test
* @library /test/lib
* @summary Test DatagramChannel local address after disconnect.
* @run main DisconnectAddresses
* @run main/othervm -Djava.net.preferIPv6Addresses=true DisconnectAddresses
* @run main/othervm -Djava.net.preferIPv4Stack=true DisconnectAddresses
*/
import jdk.test.lib.net.IPSupport;
import java.io.IOException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.net.StandardProtocolFamily;
import java.nio.ByteBuffer;
import java.nio.channels.DatagramChannel;
import java.nio.channels.NotYetConnectedException;
import java.util.Objects;
public class DisconnectAddresses {
public static void main(String[] args) throws IOException {
IPSupport.throwSkippedExceptionIfNonOperational();
boolean preferIPv6 = Boolean.getBoolean("java.net.preferIPv6Addresses");
// test with default protocol family
try (DatagramChannel dc = DatagramChannel.open()) {
System.out.println("Test with default");
dc.bind(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0));
test(dc);
test(dc);
}
if (IPSupport.hasIPv6()) {
// test with IPv6 only
System.out.println("Test with IPv6 only");
try (DatagramChannel dc = DatagramChannel.open(StandardProtocolFamily.INET6)) {
dc.bind(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0));
test(dc);
test(dc);
}
}
if (IPSupport.hasIPv4() && !preferIPv6) {
// test with IPv4 only
System.out.println("Test with IPv4 only");
try (DatagramChannel dc = DatagramChannel.open(StandardProtocolFamily.INET)) {
dc.bind(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0));
test(dc);
test(dc);
}
}
}
/**
* Connect DatagramChannel to a server, write a datagram and disconnect. Invoke
* a second or subsequent time with the same DatagramChannel instance to check
* that disconnect works as expected.
*/
static void test(DatagramChannel dc) throws IOException {
SocketAddress local = dc.getLocalAddress();
try (DatagramChannel server = DatagramChannel.open()) {
server.bind(new InetSocketAddress(InetAddress.getLoopbackAddress(), 0));
SocketAddress remote = server.getLocalAddress();
dc.connect(remote);
assertTrue(dc.isConnected());
// comment the following two lines on OS X to see JDK-8231259
assertEquals("local address after connect", dc.getLocalAddress(), local);
assertEquals("remote address after connect", dc.getRemoteAddress(), remote);
dc.disconnect();
assertFalse(dc.isConnected());
assertEquals("local address after disconnect", dc.getLocalAddress(), local);
assertEquals("remote address after disconnect", dc.getRemoteAddress(), null);
}
}
static void assertTrue(boolean val) { assertEquals(val, true); }
static void assertFalse(boolean val) { assertEquals(val, false); }
static void assertEquals(Object actual, Object expected) {
assertEquals("", actual, expected);
}
static void assertEquals(String name, Object actual, Object expected) {
if (!Objects.equals(actual, expected)) {
String message = name + " should be " + expected + " found " + actual;
throw new AssertionError(message);
}
}
}