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Netty is an asynchronous event-driven network application framework for
rapid development of maintainable high performance protocol servers and
clients.
/*
* Copyright 2021 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.incubator.codec.http3;
import io.netty.channel.ChannelHandler;
import io.netty.channel.ChannelHandlerContext;
import io.netty.incubator.codec.http3.Http3FrameCodec.Http3FrameCodecFactory;
import java.util.function.LongFunction;
import java.util.function.Supplier;
final class Http3UnidirectionalStreamInboundClientHandler extends Http3UnidirectionalStreamInboundHandler {
private final LongFunction pushStreamHandlerFactory;
Http3UnidirectionalStreamInboundClientHandler(
Http3FrameCodecFactory codecFactory,
Http3ControlStreamInboundHandler localControlStreamHandler,
Http3ControlStreamOutboundHandler remoteControlStreamHandler,
LongFunction unknownStreamHandlerFactory,
LongFunction pushStreamHandlerFactory,
Supplier qpackEncoderHandlerFactory, Supplier qpackDecoderHandlerFactory) {
super(codecFactory, localControlStreamHandler, remoteControlStreamHandler, unknownStreamHandlerFactory,
qpackEncoderHandlerFactory, qpackDecoderHandlerFactory);
this.pushStreamHandlerFactory = pushStreamHandlerFactory == null ? __ -> ReleaseHandler.INSTANCE :
pushStreamHandlerFactory;
}
@Override
void initPushStream(ChannelHandlerContext ctx, long pushId) {
// See https://tools.ietf.org/html/draft-ietf-quic-http-32#section-4.4
Long maxPushId = remoteControlStreamHandler.sentMaxPushId();
if (maxPushId == null) {
Http3CodecUtils.connectionError(ctx, Http3ErrorCode.H3_ID_ERROR,
"Received push stream before sending MAX_PUSH_ID frame.", false);
} else if (maxPushId < pushId) {
Http3CodecUtils.connectionError(ctx, Http3ErrorCode.H3_ID_ERROR,
"Received push stream with ID " + pushId + " greater than the max push ID " + maxPushId
+ '.', false);
} else {
// Replace this handler with the actual push stream handlers.
final ChannelHandler pushStreamHandler = pushStreamHandlerFactory.apply(pushId);
ctx.pipeline().replace(this, null, pushStreamHandler);
}
}
}
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