1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4  *
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7  * published by the Free Software Foundation.  Oracle designates this
8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
10  *
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
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19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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24  */
25 
26 package java.net;
27 import java.io.IOException;
28 /*
29  * Package private interface to "implementation" used by
30  * {@link InetAddress}.
31  * <p>
32  * See {@link java.net.Inet4AddressImp} and
33  * {@link java.net.Inet6AddressImp}.
34  *
35  * @since 1.4
36  */
37 interface InetAddressImpl {
38     /**
39      * Lookup all addresses for {@code hostname} on the given {@code netId}.
40      */
lookupAllHostAddr(String hostname, int netId)41     InetAddress[] lookupAllHostAddr(String hostname, int netId) throws UnknownHostException;
42 
43     /**
44      * Reverse-lookup the host name for a given {@code addr}.
45      */
getHostByAddr(byte[] addr)46     String getHostByAddr(byte[] addr) throws UnknownHostException;
47 
48     /**
49      * Clear address caches (if any).
50      */
clearAddressCache()51     public void clearAddressCache();
52 
53     /**
54      * Return the "any" local address.
55      */
anyLocalAddress()56     InetAddress anyLocalAddress();
57 
58     /**
59      * Return a list of loop back adresses for this implementation.
60      */
loopbackAddresses()61     InetAddress[] loopbackAddresses();
62 
63     /**
64      * Whether {@code addr} is reachable over {@code netif}.
65      */
isReachable(InetAddress addr, int timeout, NetworkInterface netif, int ttl)66     boolean isReachable(InetAddress addr, int timeout, NetworkInterface netif,
67                         int ttl) throws IOException;
68 }
69