/*
 * Copyright 2015-2016 the original author or authors.
 *
 * 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.springframework.security.web.session;

import java.io.IOException;

import javax.servlet.ServletException;

/**
 * Determines the behaviour of the {@code ConcurrentSessionFilter} when an expired session
 * is detected in the {@code ConcurrentSessionFilter}.
 *
 * @author Marten Deinum
 * @author Rob Winch
 * @since 4.2.0
 */
public interface SessionInformationExpiredStrategy {

	void onExpiredSessionDetected(SessionInformationExpiredEvent event)
			throws IOException, ServletException;
}
