Http3UnidirectionalStreamInboundHandler.java — netty Source File

Source Code

/*
 * Copyright 2020 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:
 *
 *   https://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 io.netty.handler.codec.http3;

import io.netty.buffer.ByteBuf;
import io.netty.channel.Channel;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.handler.codec.ByteToMessageDecoder;
import io.netty.handler.codec.http3.Http3FrameCodec.Http3FrameCodecFactory;
import io.netty.handler.codec.http3.Http3Settings.NonStandardHttp3SettingsValidator;
import io.netty.util.AttributeKey;
import io.netty.util.ReferenceCountUtil;
import org.jetbrains.annotations.Nullable;

import java.util.List;
import java.util.function.LongFunction;
import java.util.function.Supplier;

import static io.netty.handler.codec.http3.Http3CodecUtils.HTTP3_CONTROL_STREAM_TYPE;
import static io.netty.handler.codec.http3.Http3CodecUtils.HTTP3_PUSH_STREAM_TYPE;
import static io.netty.handler.codec.http3.Http3CodecUtils.HTTP3_QPACK_DECODER_STREAM_TYPE;
import static io.netty.handler.codec.http3.Http3CodecUtils.HTTP3_QPACK_ENCODER_STREAM_TYPE;
import static io.netty.handler.codec.http3.Http3RequestStreamCodecState.NO_STATE;

/**
 * {@link ByteToMessageDecoder} which helps to detect the type of unidirectional stream.
 */
abstract class Http3UnidirectionalStreamInboundHandler extends ByteToMessageDecoder {
    private static final AttributeKey<Boolean> REMOTE_CONTROL_STREAM = AttributeKey.valueOf("H3_REMOTE_CONTROL_STREAM");
    private static final AttributeKey<Boolean> REMOTE_QPACK_DECODER_STREAM =
            AttributeKey.valueOf("H3_REMOTE_QPACK_DECODER_STREAM");
    private static final AttributeKey<Boolean> REMOTE_QPACK_ENCODER_STREAM =
            AttributeKey.valueOf("H3_REMOTE_QPACK_ENCODER_STREAM");

    final Http3FrameCodecFactory codecFactory;
    final NonStandardHttp3SettingsValidator nonStandardSettingsValidator;
    final Http3ControlStreamInboundHandler localControlStreamHandler;
    final Http3ControlStreamOutboundHandler remoteControlStreamHandler;
    final Supplier<ChannelHandler> qpackEncoderHandlerFactory;
    final Supplier<ChannelHandler> qpackDecoderHandlerFactory;
    final LongFunction<ChannelHandler> unknownStreamHandlerFactory;

    Http3UnidirectionalStreamInboundHandler(Http3FrameCodecFactory codecFactory,
                                            NonStandardHttp3SettingsValidator nonStandardSettingsValidator,
                                            Http3ControlStreamInboundHandler localControlStreamHandler,
// ... (137 more lines)