001    /*
002     *  Licensed to the Apache Software Foundation (ASF) under one
003     *  or more contributor license agreements.  See the NOTICE file
004     *  distributed with this work for additional information
005     *  regarding copyright ownership.  The ASF licenses this file
006     *  to you under the Apache License, Version 2.0 (the
007     *  "License"); you may not use this file except in compliance
008     *  with the License.  You may obtain a copy of the License at
009     *  
010     *    http://www.apache.org/licenses/LICENSE-2.0
011     *  
012     *  Unless required by applicable law or agreed to in writing,
013     *  software distributed under the License is distributed on an
014     *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
015     *  KIND, either express or implied.  See the License for the
016     *  specific language governing permissions and limitations
017     *  under the License. 
018     *  
019     */
020    
021    package org.apache.directory.server.dhcp.service;
022    
023    
024    import java.net.InetSocketAddress;
025    
026    import org.apache.directory.server.dhcp.DhcpException;
027    import org.apache.directory.server.dhcp.messages.DhcpMessage;
028    
029    
030    /**
031     * DHCP Protocol (RFC 2131, RFC 2132). Implementations of the DHCP service must
032     * be thread-safe with respect to concurrent calls to getReplyFor().
033     * 
034     * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
035     * @version $Rev: 545042 $, $Date: 2007-06-06 22:32:01 -0500 (Mi, 06 Jun 2007) $
036     */
037    public interface DhcpService
038    {
039        /**
040         * Retrieve the reply to a given message. The reply may be zero, if the
041         * message should be ignored.
042         * @param localAddress TODO
043         * @param clientAddress 
044         * @param request
045         * @return DhcpMessage
046         * @throws DhcpException 
047         */
048        public DhcpMessage getReplyFor( InetSocketAddress localAddress, InetSocketAddress clientAddress, DhcpMessage request ) throws DhcpException;
049    }