1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 *
19 */
20
21 package org.apache.directory.server.dhcp.options.dhcp;
22
23
24 import java.net.InetAddress;
25
26 import org.apache.directory.server.dhcp.options.AddressOption;
27
28
29 /**
30 * This option is used in DHCPOFFER and DHCPREQUEST messages, and may
31 * optionally be included in the DHCPACK and DHCPNAK messages. DHCP
32 * servers include this option in the DHCPOFFER in order to allow the
33 * client to distinguish between lease offers. DHCP clients use the
34 * contents of the 'server identifier' field as the destination address
35 * for any DHCP messages unicast to the DHCP server. DHCP clients also
36 * indicate which of several lease offers is being accepted by including
37 * this option in a DHCPREQUEST message.
38 *
39 * The identifier is the IP address of the selected server.
40 *
41 * The code for this option is 54, and its length is 4.
42 *
43 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
44 * @version $Rev: 638228 $, $Date: 2008-03-18 07:12:41 +0100 (Di, 18 Mär 2008) $
45 */
46 public class ServerIdentifier extends AddressOption
47 {
48 public ServerIdentifier()
49 {
50 }
51
52
53 public ServerIdentifier(InetAddress localHost)
54 {
55 setAddress( localHost );
56 }
57
58
59 /*
60 * @see org.apache.directory.server.dhcp.options.DhcpOption#getTag()
61 */
62 public byte getTag()
63 {
64 return 54;
65 }
66 }