/*
 * Copyright (c) 2017, Red Hat, Inc. and/or its affiliates.
 * 
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package javax.net.ssl;

import java.util.EventListener;

/**
 * This interface is implemented by any class which wants to receive
 * information of or control an ongoing SSL handshake.
 *
 * @see HandshakeCompletedListener
 * 
 * @since 10
 * @author Martin Balao
 */
public interface HandshakeListener extends EventListener {
    /**
     * This method is invoked after verify data between a client
     * and a server has been exchanged in Finished messages of
     * an SSL handshake.
     *
     * @param event object containing information about client
     *              and server verify data.
     */
    default void finishedVerifyData(HandshakeVerifyDataEvent event) {
    }

    /**
     * This method is synchronously invoked when a renegotiation
     * is requested by the peer of an SSL handshake, and returns
     * whether or not the renegotiation should proceed. Temporarily
     * disabling renegotiations is encouraged while using TLS binding
     * values on an upper layer for authentication.
     *
     * @return whether or not a renegotiation should proceed.
     */
    default boolean renegotiationEnabled() {
        return true;
    }
}