01: /* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
02: *
03: * Licensed under the Apache License, Version 2.0 (the "License");
04: * you may not use this file except in compliance with the License.
05: * You may obtain a copy of the License at
06: *
07: * http://www.apache.org/licenses/LICENSE-2.0
08: *
09: * 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.acegisecurity.util;
17:
18: import javax.servlet.ServletRequest;
19:
20: /**
21: * A <code>PortResolver</code> determines the port a web request was received
22: * on.
23: *
24: * <P>
25: * This interface is necessary because
26: * <code>ServletRequest.getServerPort()</code> may not return the correct port
27: * in certain circumstances. For example, if the browser does not construct
28: * the URL correctly after a redirect.
29: * </p>
30: *
31: * @author Ben Alex
32: * @version $Id: PortResolver.java 1784 2007-02-24 21:00:24Z luke_t $
33: */
34: public interface PortResolver {
35: //~ Methods ========================================================================================================
36:
37: /**
38: * Indicates the port the <code>ServletRequest</code> was received on.
39: *
40: * @param request that the method should lookup the port for
41: *
42: * @return the port the request was received on
43: */
44: int getServerPort(ServletRequest request);
45: }
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