/*
 * Copyright © 2019, 2020, 2021, 2022, 2023 Peter Doornbosch
 *
 * This file is part of Kwik, an implementation of the QUIC protocol in Java.
 *
 * Kwik is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the
 * Free Software Foundation, either version 3 of the License, or (at your option)
 * any later version.
 *
 * Kwik 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 Lesser General Public License for
 * more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
package net.luminis.quic.frame;


import net.luminis.quic.packet.QuicPacket;

import java.nio.ByteBuffer;
import java.time.Instant;

/**
 * Base class for all classes that represent a QUIC frame.
 * https://www.rfc-editor.org/rfc/rfc9000.html#frames
 */
public abstract class QuicFrame {

    // https://www.rfc-editor.org/rfc/rfc9000.html#name-terms-and-definitions
    // https://tools.ietf.org/html/draft-ietf-quic-recovery-33#section-2
    // "All frames other than ACK, PADDING, and CONNECTION_CLOSE are considered ack-eliciting."

    /**
     * Returns whether the frame is ack eliciting
     * https://www.rfc-editor.org/rfc/rfc9000.html#name-terms-and-definitions
     * "Ack-eliciting packet: A QUIC packet that contains frames other than ACK, PADDING, and CONNECTION_CLOSE."
     * @return  true when the frame is ack-eliciting
     */
    public boolean isAckEliciting() {
        return true;
    }

    public abstract void accept(FrameProcessor frameProcessor, QuicPacket packet, Instant timeReceived);

    public abstract int getFrameLength();

    public abstract void serialize(ByteBuffer buffer);
}