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/* Copyright 2004 Acegi Technology Pty Limited
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.acegisecurity.util;

/**
 * PortMapper implementations provide callers with information
 * about which HTTP ports are associated with which HTTPS ports on the system,
 * and vice versa.
 *
 * @author Ben Alex
 * @version $Id: PortMapper.java,v 1.2 2005/11/17 00:56:09 benalex Exp $
 */
public interface PortMapper {
    //~ Methods ================================================================

    /**
     * Locates the HTTP port associated with the specified HTTPS port.
     * 
     * 
     * Returns null if unknown.
     * 
     *
     * @param httpsPort
     *
     * @return the HTTP port or null if unknown
     */
    public Integer lookupHttpPort(Integer httpsPort);

    /**
     * Locates the HTTPS port associated with the specified HTTP port.
     * 
     * 
     * Returns null if unknown.
     * 
     *
     * @param httpPort
     *
     * @return the HTTPS port or null if unknown
     */
    public Integer lookupHttpsPort(Integer httpPort);
}