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*
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* FITNESS FOR A PARTICULAR PURPOSE . See the GNU General Public License
* version 2 for more details ( a copy is included in the LICENSE file that
* accompanied this code ) .
*
* You should have received a copy of the GNU General Public License version
* 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
* @ bug 6717876
* @ summary Make java . net . NetworkInterface . getIndex ( ) public
*/
import java.net.*;
import java.util.Arrays;
import java.util.Collections;
import java.util.Enumeration;
import static java.lang.System.out;
public class IndexTest {
static final boolean isWindows = System.getProperty("os.name" ).startsWith("Windows" );
public static void main(String[] args) throws Exception {
Enumeration<NetworkInterface> netifs = NetworkInterface.getNetworkInterfaces();
NetworkInterface nif;
while (netifs.hasMoreElements()) {
nif = netifs.nextElement();
// JDK-8022212, Skip (Windows) Teredo Tunneling Pseudo-Interface
String dName = nif.getDisplayName();
if (isWindows && dName != null && dName.contains("Teredo" ))
continue ;
int index = nif.getIndex();
if (index >= 0 ) {
NetworkInterface nif2 = NetworkInterface.getByIndex(index);
if (! nif.equals(nif2)) {
out.printf("%nExpected interfaces to be the same, but got:%n" );
displayInterfaceInformation(nif);
displayInterfaceInformation(nif2);
throw new RuntimeException("both interfaces should be equal" );
}
}
}
try {
nif = NetworkInterface.getByIndex(-1 );
out.printf("%ngetByIndex(-1) should have thrown, but instead returned:%n" );
displayInterfaceInformation(nif);
throw new RuntimeException("Should have thrown IllegalArgumentException" );
} catch (IllegalArgumentException e) {
// OK
}
// In all likelyhood, this interface should not exist.
nif = NetworkInterface.getByIndex(Integer.MAX_VALUE - 1 );
if (nif != null ) {
out.printf("%ngetByIndex(MAX_VALUE - 1), expected null, got:%n" );
displayInterfaceInformation(nif);
throw new RuntimeException("getByIndex() should have returned null" );
}
}
static void displayInterfaceInformation(NetworkInterface netint) throws SocketException {
out.printf("Display name: %s%n" , netint.getDisplayName());
out.printf("Name: %s%n" , netint.getName());
Enumeration<InetAddress> inetAddresses = netint.getInetAddresses();
for (InetAddress inetAddress : Collections.list(inetAddresses))
out.printf("InetAddress: %s%n" , inetAddress);
out.printf("Up? %s%n" , netint.isUp());
out.printf("Loopback? %s%n" , netint.isLoopback());
out.printf("PointToPoint? %s%n" , netint.isPointToPoint());
out.printf("Supports multicast? %s%n" , netint.supportsMulticast());
out.printf("Virtual? %s%n" , netint.isVirtual());
out.printf("Hardware address: %s%n" ,
Arrays.toString(netint.getHardwareAddress()));
out.printf("MTU: %s%n" , netint.getMTU());
out.printf("Index: %s%n" , netint.getIndex());
out.printf("%n" );
}
}
Messung V0.5 in Prozent C=91 H=88 G=89
¤ Dauer der Verarbeitung: 0.3 Sekunden
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