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/*
 * Copyright 2016 The Netty Project
 *
 * The Netty Project licenses this file to you 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 ch.cern.hbase.thirdparty.io.netty.handler.codec.http2;

import ch.cern.hbase.thirdparty.io.netty.buffer.ByteBuf;
import ch.cern.hbase.thirdparty.io.netty.buffer.ByteBufHolder;
import ch.cern.hbase.thirdparty.io.netty.util.internal.UnstableApi;

/**
 * HTTP/2 DATA frame.
 */
@UnstableApi
public interface Http2DataFrame extends Http2StreamFrame, ByteBufHolder {

    /**
     * Frame padding to use. Will be non-negative and less than 256.
     */
    int padding();

    /**
     * Payload of DATA frame. Will not be {@code null}.
     */
    @Override
    ByteBuf content();

    /**
     * Returns the number of bytes that are flow-controlled initially, so even if the {@link #content()} is consumed
     * this will not change.
     */
    int initialFlowControlledBytes();

    /**
     * Returns {@code true} if the END_STREAM flag ist set.
     */
    boolean isEndStream();

    @Override
    Http2DataFrame copy();

    @Override
    Http2DataFrame duplicate();

    @Override
    Http2DataFrame retainedDuplicate();

    @Override
    Http2DataFrame replace(ByteBuf content);

    @Override
    Http2DataFrame retain();

    @Override
    Http2DataFrame retain(int increment);

    @Override
    Http2DataFrame touch();

    @Override
    Http2DataFrame touch(Object hint);
}