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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   */
45  public class ServerIdentifier extends AddressOption
46  {
47      public ServerIdentifier()
48      {
49      }
50  
51  
52      public ServerIdentifier( InetAddress localHost )
53      {
54          setAddress( localHost );
55      }
56  
57  
58      /*
59       * @see org.apache.directory.server.dhcp.options.DhcpOption#getTag()
60       */
61      public byte getTag()
62      {
63          return 54;
64      }
65  }