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1   /* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
2    *
3    * Licensed under the Apache License, Version 2.0 (the "License");
4    * you may not use this file except in compliance with the License.
5    * You may obtain a copy of the License at
6    *
7    *     http://www.apache.org/licenses/LICENSE-2.0
8    *
9    * Unless required by applicable law or agreed to in writing, software
10   * distributed under the License is distributed on an "AS IS" BASIS,
11   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12   * See the License for the specific language governing permissions and
13   * limitations under the License.
14   */
15  
16  package org.springframework.security.util;
17  
18  /**
19   * <code>PortMapper</code> implementations provide callers with information
20   * about which HTTP ports are associated with which HTTPS ports on the system,
21   * and vice versa.
22   *
23   * @author Ben Alex
24   * @version $Id: PortMapper.java 2217 2007-10-27 00:45:30Z luke_t $
25   */
26  public interface PortMapper {
27      //~ Methods ========================================================================================================
28  
29      /**
30       * Locates the HTTP port associated with the specified HTTPS port.<P>Returns <code>null</code> if unknown.</p>
31       *
32       * @param httpsPort
33       *
34       * @return the HTTP port or <code>null</code> if unknown
35       */
36      Integer lookupHttpPort(Integer httpsPort);
37  
38      /**
39       * Locates the HTTPS port associated with the specified HTTP port.<P>Returns <code>null</code> if unknown.</p>
40       *
41       * @param httpPort
42       *
43       * @return the HTTPS port or <code>null</code> if unknown
44       */
45      Integer lookupHttpsPort(Integer httpPort);
46  }