1 /*
2  * Copyright (c) 2012, 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
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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
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  *
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24  */
25 
26 package javax.net.ssl;
27 
28 /**
29  * Standard constants definitions
30  *
31  * @since 1.8
32  */
33 public final class StandardConstants {
34 
35     // Suppress default constructor for noninstantiability
StandardConstants()36     private StandardConstants() {
37         throw new AssertionError(
38             "No javax.net.ssl.StandardConstants instances for you!");
39     }
40 
41     /**
42      * The "host_name" type representing of a DNS hostname
43      * (see {@link SNIHostName}) in a Server Name Indication (SNI) extension.
44      * <P>
45      * The SNI extension is a feature that extends the SSL/TLS protocols to
46      * indicate what server name the client is attempting to connect to during
47      * handshaking.  See section 3, "Server Name Indication", of <A
48      * HREF="http://www.ietf.org/rfc/rfc6066.txt">TLS Extensions (RFC 6066)</A>.
49      * <P>
50      * The value of this constant is {@code 0x00}.
51      *
52      * @see SNIServerName
53      * @see SNIHostName
54      */
55     public static final int SNI_HOST_NAME = 0x00;
56 }
57