1 /*
 2  * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
 3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 4  *
 5  * This code is free software; you can redistribute it and/or modify it
 6  * under the terms of the GNU General Public License version 2 only, as
 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
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 jdk.internal.access;
27 
28 import java.net.Inet4Address;
29 import java.net.Inet6Address;
30 import java.net.InetAddress;
31 import java.net.UnknownHostException;
32 
33 public interface JavaNetInetAddressAccess {
34     /**
35      * Return the original application specified hostname of
36      * the given InetAddress object.
37      */
38     String getOriginalHostName(InetAddress ia);
39 
40     /**
41      * Get the InetAddress of the provided host. If an InetAddress is provided
42      * then it will be the default address returned for all calls to either
43      * form of getByName. This is required to maintain consistency when
44      * caching addresses and hostnames.
45      */
46     InetAddress getByName(String hostName, InetAddress hostAddress)
47             throws UnknownHostException;
48 
49     /**
50      * Returns the 32-bit IPv4 address.
51      */
52     int addressValue(Inet4Address inet4Address);
53 
54     /**
55      * Returns a reference to the byte[] with the IPv6 address.
56      */
57     byte[] addressBytes(Inet6Address inet6Address);
58 }