11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.net;
27
28 import java.util.Arrays;
29 import java.util.Enumeration;
30 import java.util.NoSuchElementException;
31 import java.security.AccessController;
32 import java.util.Spliterator;
33 import java.util.Spliterators;
34 import java.util.stream.Stream;
35 import java.util.stream.StreamSupport;
36
37 /**
38 * This class represents a Network Interface made up of a name,
39 * and a list of IP addresses assigned to this interface.
40 * It is used to identify the local interface on which a multicast group
41 * is joined.
42 *
43 * Interfaces are normally known by names such as "le0".
44 *
45 * @since 1.4
46 */
47 public final class NetworkInterface {
48 private String name;
49 private String displayName;
50 private int index;
51 private InetAddress addrs[];
52 private InterfaceAddress bindings[];
53 private NetworkInterface childs[];
54 private NetworkInterface parent = null;
55 private boolean virtual = false;
56 private static final NetworkInterface defaultInterface;
57 private static final int defaultIndex; /* index of defaultInterface */
58
59 static {
60 AccessController.doPrivileged(
61 new java.security.PrivilegedAction<>() {
62 public Void run() {
63 System.loadLibrary("net");
64 return null;
65 }
66 });
67
68 init();
69 defaultInterface = DefaultInterface.getDefault();
70 if (defaultInterface != null) {
71 defaultIndex = defaultInterface.getIndex();
72 } else {
73 defaultIndex = 0;
74 }
75 }
76
77 /**
78 * Returns an NetworkInterface object with index set to 0 and name to null.
79 * Setting such an interface on a MulticastSocket will cause the
80 * kernel to choose one interface for sending multicast packets.
81 *
82 */
83 NetworkInterface() {
84 }
85
86 NetworkInterface(String name, int index, InetAddress[] addrs) {
|
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package java.net;
27
28 import java.util.Arrays;
29 import java.util.Enumeration;
30 import java.util.NoSuchElementException;
31 import java.util.Spliterator;
32 import java.util.Spliterators;
33 import java.util.stream.Stream;
34 import java.util.stream.StreamSupport;
35
36 /**
37 * This class represents a Network Interface made up of a name,
38 * and a list of IP addresses assigned to this interface.
39 * It is used to identify the local interface on which a multicast group
40 * is joined.
41 *
42 * Interfaces are normally known by names such as "le0".
43 *
44 * @since 1.4
45 */
46 public final class NetworkInterface {
47 private String name;
48 private String displayName;
49 private int index;
50 private InetAddress addrs[];
51 private InterfaceAddress bindings[];
52 private NetworkInterface childs[];
53 private NetworkInterface parent = null;
54 private boolean virtual = false;
55 private static final NetworkInterface defaultInterface;
56 private static final int defaultIndex; /* index of defaultInterface */
57
58 static {
59 jdk.internal.access.SharedSecrets.getJavaLangAccess().loadLibrary("net");
60
61 init();
62 defaultInterface = DefaultInterface.getDefault();
63 if (defaultInterface != null) {
64 defaultIndex = defaultInterface.getIndex();
65 } else {
66 defaultIndex = 0;
67 }
68 }
69
70 /**
71 * Returns an NetworkInterface object with index set to 0 and name to null.
72 * Setting such an interface on a MulticastSocket will cause the
73 * kernel to choose one interface for sending multicast packets.
74 *
75 */
76 NetworkInterface() {
77 }
78
79 NetworkInterface(String name, int index, InetAddress[] addrs) {
|