mirror of https://github.com/grpc/grpc-java.git
netty: Copy DefaultHttp2ConnectionDecoder in prep for backport
This commit is contained in:
Eric Anderson
parent
da93a64ec1
commit
9ef07916f7
12
NOTICE.txt
12
NOTICE.txt
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@ -38,4 +38,14 @@ at:
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* HOMEPAGE:
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* HOMEPAGE:
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* https://github.com/square/okhttp
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* https://github.com/square/okhttp
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* LOCATION_IN_GRPC:
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* LOCATION_IN_GRPC:
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* okhttp/third_party/okhttp
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* okhttp/third_party/okhttp
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This product contains a modified portion of 'Netty', an open source
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networking library, which can be obtained at:
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* LICENSE:
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* netty/third_party/netty/LICENSE.txt (Apache License 2.0)
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* HOMEPAGE:
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* https://netty.io
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* LOCATION_IN_GRPC:
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* netty/third_party/netty
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@ -12,3 +12,12 @@ dependencies {
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}
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}
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javadoc.options.links 'http://netty.io/4.1/api/'
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javadoc.options.links 'http://netty.io/4.1/api/'
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project.sourceSets {
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main {
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java {
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srcDir "${projectDir}/third_party/netty/java"
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}
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}
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}
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@ -56,7 +56,6 @@ import io.netty.channel.ChannelFutureListener;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.channel.ChannelPromise;
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import io.netty.channel.ChannelPromise;
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import io.netty.handler.codec.http2.DefaultHttp2Connection;
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import io.netty.handler.codec.http2.DefaultHttp2Connection;
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import io.netty.handler.codec.http2.DefaultHttp2ConnectionDecoder;
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import io.netty.handler.codec.http2.DefaultHttp2ConnectionEncoder;
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import io.netty.handler.codec.http2.DefaultHttp2ConnectionEncoder;
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import io.netty.handler.codec.http2.DefaultHttp2FrameReader;
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import io.netty.handler.codec.http2.DefaultHttp2FrameReader;
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import io.netty.handler.codec.http2.DefaultHttp2FrameWriter;
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import io.netty.handler.codec.http2.DefaultHttp2FrameWriter;
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@ -149,7 +148,8 @@ class NettyClientHandler extends AbstractNettyHandler {
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connection.local().flowController(
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connection.local().flowController(
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new DefaultHttp2LocalFlowController(connection, DEFAULT_WINDOW_UPDATE_RATIO, true));
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new DefaultHttp2LocalFlowController(connection, DEFAULT_WINDOW_UPDATE_RATIO, true));
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Http2ConnectionDecoder decoder = new DefaultHttp2ConnectionDecoder(connection, encoder,
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// TODO(ejona): swap back to DefaultHttp2Connection with Netty-4.1.9
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Http2ConnectionDecoder decoder = new FixedHttp2ConnectionDecoder(connection, encoder,
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frameReader);
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frameReader);
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Http2Settings settings = new Http2Settings();
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Http2Settings settings = new Http2Settings();
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@ -54,7 +54,6 @@ import io.netty.channel.ChannelFutureListener;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.channel.ChannelPromise;
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import io.netty.channel.ChannelPromise;
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import io.netty.handler.codec.http2.DefaultHttp2Connection;
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import io.netty.handler.codec.http2.DefaultHttp2Connection;
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import io.netty.handler.codec.http2.DefaultHttp2ConnectionDecoder;
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import io.netty.handler.codec.http2.DefaultHttp2ConnectionEncoder;
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import io.netty.handler.codec.http2.DefaultHttp2ConnectionEncoder;
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import io.netty.handler.codec.http2.DefaultHttp2FrameReader;
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import io.netty.handler.codec.http2.DefaultHttp2FrameReader;
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import io.netty.handler.codec.http2.DefaultHttp2FrameWriter;
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import io.netty.handler.codec.http2.DefaultHttp2FrameWriter;
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@ -136,7 +135,8 @@ class NettyServerHandler extends AbstractNettyHandler {
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Http2ConnectionEncoder encoder = new DefaultHttp2ConnectionEncoder(connection, frameWriter);
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Http2ConnectionEncoder encoder = new DefaultHttp2ConnectionEncoder(connection, frameWriter);
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Http2ConnectionDecoder decoder = new DefaultHttp2ConnectionDecoder(connection, encoder,
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// TODO(ejona): swap back to DefaultHttp2Connection with Netty-4.1.9
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Http2ConnectionDecoder decoder = new FixedHttp2ConnectionDecoder(connection, encoder,
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frameReader);
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frameReader);
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Http2Settings settings = new Http2Settings();
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Http2Settings settings = new Http2Settings();
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@ -0,0 +1,202 @@
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Apache License
|
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Version 2.0, January 2004
|
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http://www.apache.org/licenses/
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711
netty/third_party/netty/java/io/grpc/netty/FixedHttp2ConnectionDecoder.java
vendored
Normal file
711
netty/third_party/netty/java/io/grpc/netty/FixedHttp2ConnectionDecoder.java
vendored
Normal file
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@ -0,0 +1,711 @@
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/*
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||||||
|
* Copyright 2014 The Netty Project
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*
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* The Netty Project licenses this file to you under the Apache License, version 2.0 (the
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* "License"); you may not use this file except in compliance with the License. You may obtain a
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* copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software distributed under the License
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* is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express
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* or implied. See the License for the specific language governing permissions and limitations under
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* the License.
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*/
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||||||
|
package io.grpc.netty;
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import io.netty.buffer.ByteBuf;
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import io.netty.channel.ChannelHandlerContext;
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import io.netty.handler.codec.http2.*;
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import io.netty.handler.codec.http2.Http2Connection.Endpoint;
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import io.netty.handler.codec.http2.Http2Exception.ClosedStreamCreationException;
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import io.netty.util.internal.UnstableApi;
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import io.netty.util.internal.logging.InternalLogger;
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import io.netty.util.internal.logging.InternalLoggerFactory;
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import java.util.List;
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import static io.netty.handler.codec.http2.Http2CodecUtil.DEFAULT_PRIORITY_WEIGHT;
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import static io.netty.handler.codec.http2.Http2CodecUtil.SMALLEST_MAX_CONCURRENT_STREAMS;
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import static io.netty.handler.codec.http2.Http2Error.INTERNAL_ERROR;
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import static io.netty.handler.codec.http2.Http2Error.PROTOCOL_ERROR;
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import static io.netty.handler.codec.http2.Http2Error.STREAM_CLOSED;
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import static io.netty.handler.codec.http2.Http2Exception.connectionError;
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import static io.netty.handler.codec.http2.Http2Exception.streamError;
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import static io.netty.handler.codec.http2.Http2PromisedRequestVerifier.ALWAYS_VERIFY;
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import static io.netty.handler.codec.http2.Http2Stream.State.CLOSED;
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import static io.netty.handler.codec.http2.Http2Stream.State.HALF_CLOSED_REMOTE;
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import static io.netty.util.internal.ObjectUtil.checkNotNull;
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import static java.lang.Integer.MAX_VALUE;
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import static java.lang.Math.min;
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/**
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* Provides the default implementation for processing inbound frame events and delegates to a
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* {@link Http2FrameListener}
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* <p>
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* This class will read HTTP/2 frames and delegate the events to a {@link Http2FrameListener}
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* <p>
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* This interface enforces inbound flow control functionality through
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||||||
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* {@link Http2LocalFlowController}
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||||||
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*/
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@UnstableApi
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||||||
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public class FixedHttp2ConnectionDecoder implements Http2ConnectionDecoder {
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||||||
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private static final InternalLogger logger = InternalLoggerFactory.getInstance(FixedHttp2ConnectionDecoder.class);
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||||||
|
private Http2FrameListener internalFrameListener = new PrefaceFrameListener();
|
||||||
|
private final Http2Connection connection;
|
||||||
|
private Http2LifecycleManager lifecycleManager;
|
||||||
|
private final Http2ConnectionEncoder encoder;
|
||||||
|
private final Http2FrameReader frameReader;
|
||||||
|
private Http2FrameListener listener;
|
||||||
|
private final Http2PromisedRequestVerifier requestVerifier;
|
||||||
|
|
||||||
|
public FixedHttp2ConnectionDecoder(Http2Connection connection,
|
||||||
|
Http2ConnectionEncoder encoder,
|
||||||
|
Http2FrameReader frameReader) {
|
||||||
|
this(connection, encoder, frameReader, ALWAYS_VERIFY);
|
||||||
|
}
|
||||||
|
|
||||||
|
public FixedHttp2ConnectionDecoder(Http2Connection connection,
|
||||||
|
Http2ConnectionEncoder encoder,
|
||||||
|
Http2FrameReader frameReader,
|
||||||
|
Http2PromisedRequestVerifier requestVerifier) {
|
||||||
|
this.connection = checkNotNull(connection, "connection");
|
||||||
|
this.frameReader = checkNotNull(frameReader, "frameReader");
|
||||||
|
this.encoder = checkNotNull(encoder, "encoder");
|
||||||
|
this.requestVerifier = checkNotNull(requestVerifier, "requestVerifier");
|
||||||
|
if (connection.local().flowController() == null) {
|
||||||
|
connection.local().flowController(new DefaultHttp2LocalFlowController(connection));
|
||||||
|
}
|
||||||
|
connection.local().flowController().frameWriter(encoder.frameWriter());
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void lifecycleManager(Http2LifecycleManager lifecycleManager) {
|
||||||
|
this.lifecycleManager = checkNotNull(lifecycleManager, "lifecycleManager");
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public Http2Connection connection() {
|
||||||
|
return connection;
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public final Http2LocalFlowController flowController() {
|
||||||
|
return connection.local().flowController();
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void frameListener(Http2FrameListener listener) {
|
||||||
|
this.listener = checkNotNull(listener, "listener");
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public Http2FrameListener frameListener() {
|
||||||
|
return listener;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Visible for testing
|
||||||
|
Http2FrameListener internalFrameListener() {
|
||||||
|
return internalFrameListener;
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public boolean prefaceReceived() {
|
||||||
|
return FrameReadListener.class == internalFrameListener.getClass();
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void decodeFrame(ChannelHandlerContext ctx, ByteBuf in, List<Object> out) throws Http2Exception {
|
||||||
|
frameReader.readFrame(ctx, in, internalFrameListener);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public Http2Settings localSettings() {
|
||||||
|
Http2Settings settings = new Http2Settings();
|
||||||
|
Http2FrameReader.Configuration config = frameReader.configuration();
|
||||||
|
Http2HeadersDecoder.Configuration headersConfig = config.headersConfiguration();
|
||||||
|
Http2FrameSizePolicy frameSizePolicy = config.frameSizePolicy();
|
||||||
|
settings.initialWindowSize(flowController().initialWindowSize());
|
||||||
|
settings.maxConcurrentStreams(connection.remote().maxActiveStreams());
|
||||||
|
settings.headerTableSize(headersConfig.maxHeaderTableSize());
|
||||||
|
settings.maxFrameSize(frameSizePolicy.maxFrameSize());
|
||||||
|
settings.maxHeaderListSize(headersConfig.maxHeaderListSize());
|
||||||
|
if (!connection.isServer()) {
|
||||||
|
// Only set the pushEnabled flag if this is a client endpoint.
|
||||||
|
settings.pushEnabled(connection.local().allowPushTo());
|
||||||
|
}
|
||||||
|
return settings;
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void close() {
|
||||||
|
frameReader.close();
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Calculate the threshold in bytes which should trigger a {@code GO_AWAY} if a set of headers exceeds this amount.
|
||||||
|
* @param maxHeaderListSize
|
||||||
|
* <a href="https://tools.ietf.org/html/rfc7540#section-6.5.2">SETTINGS_MAX_HEADER_LIST_SIZE</a> for the local
|
||||||
|
* endpoint.
|
||||||
|
* @return the threshold in bytes which should trigger a {@code GO_AWAY} if a set of headers exceeds this amount.
|
||||||
|
*/
|
||||||
|
protected long calculateMaxHeaderListSizeGoAway(long maxHeaderListSize) {
|
||||||
|
return Http2CodecUtil.calculateMaxHeaderListSizeGoAway(maxHeaderListSize);
|
||||||
|
}
|
||||||
|
|
||||||
|
private int unconsumedBytes(Http2Stream stream) {
|
||||||
|
return flowController().unconsumedBytes(stream);
|
||||||
|
}
|
||||||
|
|
||||||
|
void onGoAwayRead0(ChannelHandlerContext ctx, int lastStreamId, long errorCode, ByteBuf debugData)
|
||||||
|
throws Http2Exception {
|
||||||
|
if (connection.goAwayReceived() && connection.local().lastStreamKnownByPeer() < lastStreamId) {
|
||||||
|
throw connectionError(PROTOCOL_ERROR, "lastStreamId MUST NOT increase. Current value: %d new value: %d",
|
||||||
|
connection.local().lastStreamKnownByPeer(), lastStreamId);
|
||||||
|
}
|
||||||
|
listener.onGoAwayRead(ctx, lastStreamId, errorCode, debugData);
|
||||||
|
connection.goAwayReceived(lastStreamId, errorCode, debugData);
|
||||||
|
}
|
||||||
|
|
||||||
|
void onUnknownFrame0(ChannelHandlerContext ctx, byte frameType, int streamId, Http2Flags flags,
|
||||||
|
ByteBuf payload) throws Http2Exception {
|
||||||
|
listener.onUnknownFrame(ctx, frameType, streamId, flags, payload);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Handles all inbound frames from the network.
|
||||||
|
*/
|
||||||
|
private final class FrameReadListener implements Http2FrameListener {
|
||||||
|
@Override
|
||||||
|
public int onDataRead(final ChannelHandlerContext ctx, int streamId, ByteBuf data, int padding,
|
||||||
|
boolean endOfStream) throws Http2Exception {
|
||||||
|
Http2Stream stream = connection.stream(streamId);
|
||||||
|
Http2LocalFlowController flowController = flowController();
|
||||||
|
int bytesToReturn = data.readableBytes() + padding;
|
||||||
|
|
||||||
|
final boolean shouldIgnore;
|
||||||
|
try {
|
||||||
|
shouldIgnore = shouldIgnoreHeadersOrDataFrame(ctx, streamId, stream, "DATA");
|
||||||
|
} catch (Http2Exception e) {
|
||||||
|
// Ignoring this frame. We still need to count the frame towards the connection flow control
|
||||||
|
// window, but we immediately mark all bytes as consumed.
|
||||||
|
flowController.receiveFlowControlledFrame(stream, data, padding, endOfStream);
|
||||||
|
flowController.consumeBytes(stream, bytesToReturn);
|
||||||
|
throw e;
|
||||||
|
} catch (Throwable t) {
|
||||||
|
throw connectionError(INTERNAL_ERROR, t, "Unhandled error on data stream id %d", streamId);
|
||||||
|
}
|
||||||
|
|
||||||
|
if (shouldIgnore) {
|
||||||
|
// Ignoring this frame. We still need to count the frame towards the connection flow control
|
||||||
|
// window, but we immediately mark all bytes as consumed.
|
||||||
|
flowController.receiveFlowControlledFrame(stream, data, padding, endOfStream);
|
||||||
|
flowController.consumeBytes(stream, bytesToReturn);
|
||||||
|
|
||||||
|
// Verify that the stream may have existed after we apply flow control.
|
||||||
|
verifyStreamMayHaveExisted(streamId);
|
||||||
|
|
||||||
|
// All bytes have been consumed.
|
||||||
|
return bytesToReturn;
|
||||||
|
}
|
||||||
|
|
||||||
|
Http2Exception error = null;
|
||||||
|
switch (stream.state()) {
|
||||||
|
case OPEN:
|
||||||
|
case HALF_CLOSED_LOCAL:
|
||||||
|
break;
|
||||||
|
case HALF_CLOSED_REMOTE:
|
||||||
|
case CLOSED:
|
||||||
|
error = streamError(stream.id(), STREAM_CLOSED, "Stream %d in unexpected state: %s",
|
||||||
|
stream.id(), stream.state());
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
error = streamError(stream.id(), PROTOCOL_ERROR,
|
||||||
|
"Stream %d in unexpected state: %s", stream.id(), stream.state());
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
int unconsumedBytes = unconsumedBytes(stream);
|
||||||
|
try {
|
||||||
|
flowController.receiveFlowControlledFrame(stream, data, padding, endOfStream);
|
||||||
|
// Update the unconsumed bytes after flow control is applied.
|
||||||
|
unconsumedBytes = unconsumedBytes(stream);
|
||||||
|
|
||||||
|
// If the stream is in an invalid state to receive the frame, throw the error.
|
||||||
|
if (error != null) {
|
||||||
|
throw error;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Call back the application and retrieve the number of bytes that have been
|
||||||
|
// immediately processed.
|
||||||
|
bytesToReturn = listener.onDataRead(ctx, streamId, data, padding, endOfStream);
|
||||||
|
return bytesToReturn;
|
||||||
|
} catch (Http2Exception e) {
|
||||||
|
// If an exception happened during delivery, the listener may have returned part
|
||||||
|
// of the bytes before the error occurred. If that's the case, subtract that from
|
||||||
|
// the total processed bytes so that we don't return too many bytes.
|
||||||
|
int delta = unconsumedBytes - unconsumedBytes(stream);
|
||||||
|
bytesToReturn -= delta;
|
||||||
|
throw e;
|
||||||
|
} catch (RuntimeException e) {
|
||||||
|
// If an exception happened during delivery, the listener may have returned part
|
||||||
|
// of the bytes before the error occurred. If that's the case, subtract that from
|
||||||
|
// the total processed bytes so that we don't return too many bytes.
|
||||||
|
int delta = unconsumedBytes - unconsumedBytes(stream);
|
||||||
|
bytesToReturn -= delta;
|
||||||
|
throw e;
|
||||||
|
} finally {
|
||||||
|
// If appropriate, return the processed bytes to the flow controller.
|
||||||
|
flowController.consumeBytes(stream, bytesToReturn);
|
||||||
|
|
||||||
|
if (endOfStream) {
|
||||||
|
lifecycleManager.closeStreamRemote(stream, ctx.newSucceededFuture());
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onHeadersRead(ChannelHandlerContext ctx, int streamId, Http2Headers headers, int padding,
|
||||||
|
boolean endOfStream) throws Http2Exception {
|
||||||
|
onHeadersRead(ctx, streamId, headers, 0, DEFAULT_PRIORITY_WEIGHT, false, padding, endOfStream);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onHeadersRead(ChannelHandlerContext ctx, int streamId, Http2Headers headers, int streamDependency,
|
||||||
|
short weight, boolean exclusive, int padding, boolean endOfStream) throws Http2Exception {
|
||||||
|
Http2Stream stream = connection.stream(streamId);
|
||||||
|
boolean allowHalfClosedRemote = false;
|
||||||
|
if (stream == null && !connection.streamMayHaveExisted(streamId)) {
|
||||||
|
stream = connection.remote().createStream(streamId, endOfStream);
|
||||||
|
// Allow the state to be HALF_CLOSE_REMOTE if we're creating it in that state.
|
||||||
|
allowHalfClosedRemote = stream.state() == HALF_CLOSED_REMOTE;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (shouldIgnoreHeadersOrDataFrame(ctx, streamId, stream, "HEADERS")) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
switch (stream.state()) {
|
||||||
|
case RESERVED_REMOTE:
|
||||||
|
stream.open(endOfStream);
|
||||||
|
break;
|
||||||
|
case OPEN:
|
||||||
|
case HALF_CLOSED_LOCAL:
|
||||||
|
// Allowed to receive headers in these states.
|
||||||
|
break;
|
||||||
|
case HALF_CLOSED_REMOTE:
|
||||||
|
if (!allowHalfClosedRemote) {
|
||||||
|
throw streamError(stream.id(), STREAM_CLOSED, "Stream %d in unexpected state: %s",
|
||||||
|
stream.id(), stream.state());
|
||||||
|
}
|
||||||
|
break;
|
||||||
|
case CLOSED:
|
||||||
|
throw streamError(stream.id(), STREAM_CLOSED, "Stream %d in unexpected state: %s",
|
||||||
|
stream.id(), stream.state());
|
||||||
|
default:
|
||||||
|
// Connection error.
|
||||||
|
throw connectionError(PROTOCOL_ERROR, "Stream %d in unexpected state: %s", stream.id(),
|
||||||
|
stream.state());
|
||||||
|
}
|
||||||
|
|
||||||
|
try {
|
||||||
|
// This call will create a stream for streamDependency if necessary.
|
||||||
|
// For this reason it must be done before notifying the listener.
|
||||||
|
stream.setPriority(streamDependency, weight, exclusive);
|
||||||
|
} catch (ClosedStreamCreationException ignored) {
|
||||||
|
// It is possible that either the stream for this frame or the parent stream is closed.
|
||||||
|
// In this case we should ignore the exception and allow the frame to be sent.
|
||||||
|
}
|
||||||
|
|
||||||
|
listener.onHeadersRead(ctx, streamId, headers, streamDependency, weight, exclusive, padding, endOfStream);
|
||||||
|
|
||||||
|
// If the headers completes this stream, close it.
|
||||||
|
if (endOfStream) {
|
||||||
|
lifecycleManager.closeStreamRemote(stream, ctx.newSucceededFuture());
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onPriorityRead(ChannelHandlerContext ctx, int streamId, int streamDependency, short weight,
|
||||||
|
boolean exclusive) throws Http2Exception {
|
||||||
|
Http2Stream stream = connection.stream(streamId);
|
||||||
|
|
||||||
|
try {
|
||||||
|
if (stream == null) {
|
||||||
|
if (connection.streamMayHaveExisted(streamId)) {
|
||||||
|
logger.info("{} ignoring PRIORITY frame for stream {}. Stream doesn't exist but may " +
|
||||||
|
" have existed", ctx.channel(), streamId);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
// PRIORITY frames always identify a stream. This means that if a PRIORITY frame is the
|
||||||
|
// first frame to be received for a stream that we must create the stream.
|
||||||
|
stream = connection.remote().createIdleStream(streamId);
|
||||||
|
} else if (streamCreatedAfterGoAwaySent(streamId)) {
|
||||||
|
logger.info("{} ignoring PRIORITY frame for stream {}. Stream created after GOAWAY sent. " +
|
||||||
|
"Last known stream by peer {}",
|
||||||
|
ctx.channel(), streamId, connection.remote().lastStreamKnownByPeer());
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
// This call will create a stream for streamDependency if necessary.
|
||||||
|
// For this reason it must be done before notifying the listener.
|
||||||
|
stream.setPriority(streamDependency, weight, exclusive);
|
||||||
|
} catch (ClosedStreamCreationException ignored) {
|
||||||
|
// It is possible that either the stream for this frame or the parent stream is closed.
|
||||||
|
// In this case we should ignore the exception and allow the frame to be sent.
|
||||||
|
}
|
||||||
|
|
||||||
|
listener.onPriorityRead(ctx, streamId, streamDependency, weight, exclusive);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onRstStreamRead(ChannelHandlerContext ctx, int streamId, long errorCode) throws Http2Exception {
|
||||||
|
Http2Stream stream = connection.stream(streamId);
|
||||||
|
if (stream == null) {
|
||||||
|
verifyStreamMayHaveExisted(streamId);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
switch(stream.state()) {
|
||||||
|
case IDLE:
|
||||||
|
throw connectionError(PROTOCOL_ERROR, "RST_STREAM received for IDLE stream %d", streamId);
|
||||||
|
case CLOSED:
|
||||||
|
return; // RST_STREAM frames must be ignored for closed streams.
|
||||||
|
default:
|
||||||
|
break;
|
||||||
|
}
|
||||||
|
|
||||||
|
listener.onRstStreamRead(ctx, streamId, errorCode);
|
||||||
|
|
||||||
|
lifecycleManager.closeStream(stream, ctx.newSucceededFuture());
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onSettingsAckRead(ChannelHandlerContext ctx) throws Http2Exception {
|
||||||
|
// Apply oldest outstanding local settings here. This is a synchronization point between endpoints.
|
||||||
|
Http2Settings settings = encoder.pollSentSettings();
|
||||||
|
|
||||||
|
if (settings != null) {
|
||||||
|
applyLocalSettings(settings);
|
||||||
|
}
|
||||||
|
|
||||||
|
listener.onSettingsAckRead(ctx);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Applies settings sent from the local endpoint.
|
||||||
|
* <p>
|
||||||
|
* This method is only called after the local settings have been acknowledged from the remote endpoint.
|
||||||
|
*/
|
||||||
|
private void applyLocalSettings(Http2Settings settings) throws Http2Exception {
|
||||||
|
Boolean pushEnabled = settings.pushEnabled();
|
||||||
|
final Http2FrameReader.Configuration config = frameReader.configuration();
|
||||||
|
final Http2HeadersDecoder.Configuration headerConfig = config.headersConfiguration();
|
||||||
|
final Http2FrameSizePolicy frameSizePolicy = config.frameSizePolicy();
|
||||||
|
if (pushEnabled != null) {
|
||||||
|
if (connection.isServer()) {
|
||||||
|
throw connectionError(PROTOCOL_ERROR, "Server sending SETTINGS frame with ENABLE_PUSH specified");
|
||||||
|
}
|
||||||
|
connection.local().allowPushTo(pushEnabled);
|
||||||
|
}
|
||||||
|
|
||||||
|
Long maxConcurrentStreams = settings.maxConcurrentStreams();
|
||||||
|
if (maxConcurrentStreams != null) {
|
||||||
|
int value = (int) min(maxConcurrentStreams, MAX_VALUE);
|
||||||
|
connection.remote().maxStreams(value, calculateMaxStreams(value));
|
||||||
|
}
|
||||||
|
|
||||||
|
Long headerTableSize = settings.headerTableSize();
|
||||||
|
if (headerTableSize != null) {
|
||||||
|
headerConfig.maxHeaderTableSize(headerTableSize);
|
||||||
|
}
|
||||||
|
|
||||||
|
Long maxHeaderListSize = settings.maxHeaderListSize();
|
||||||
|
if (maxHeaderListSize != null) {
|
||||||
|
headerConfig.maxHeaderListSize(maxHeaderListSize, calculateMaxHeaderListSizeGoAway(maxHeaderListSize));
|
||||||
|
}
|
||||||
|
|
||||||
|
Integer maxFrameSize = settings.maxFrameSize();
|
||||||
|
if (maxFrameSize != null) {
|
||||||
|
frameSizePolicy.maxFrameSize(maxFrameSize);
|
||||||
|
}
|
||||||
|
|
||||||
|
Integer initialWindowSize = settings.initialWindowSize();
|
||||||
|
if (initialWindowSize != null) {
|
||||||
|
flowController().initialWindowSize(initialWindowSize);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Calculate the {@code maxStreams} parameter for the {@link Endpoint#maxStreams(int, int)} method based upon
|
||||||
|
* {@code SETTINGS_MAX_CONCURRENT_STREAMS}.
|
||||||
|
* @param maxConcurrentStreams {@code SETTINGS_MAX_CONCURRENT_STREAMS}.
|
||||||
|
* @return the {@code maxStreams} parameter for the {@link Endpoint#maxStreams(int, int)} method.
|
||||||
|
*/
|
||||||
|
private int calculateMaxStreams(int maxConcurrentStreams) {
|
||||||
|
int maxStreams = maxConcurrentStreams + SMALLEST_MAX_CONCURRENT_STREAMS;
|
||||||
|
return maxStreams < 0 ? MAX_VALUE : maxStreams;
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onSettingsRead(ChannelHandlerContext ctx, Http2Settings settings) throws Http2Exception {
|
||||||
|
encoder.remoteSettings(settings);
|
||||||
|
|
||||||
|
// Acknowledge receipt of the settings.
|
||||||
|
encoder.writeSettingsAck(ctx, ctx.newPromise());
|
||||||
|
|
||||||
|
listener.onSettingsRead(ctx, settings);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onPingRead(ChannelHandlerContext ctx, ByteBuf data) throws Http2Exception {
|
||||||
|
// Send an ack back to the remote client.
|
||||||
|
// Need to retain the buffer here since it will be released after the write completes.
|
||||||
|
encoder.writePing(ctx, true, data.retainedSlice(), ctx.newPromise());
|
||||||
|
|
||||||
|
listener.onPingRead(ctx, data);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onPingAckRead(ChannelHandlerContext ctx, ByteBuf data) throws Http2Exception {
|
||||||
|
listener.onPingAckRead(ctx, data);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onPushPromiseRead(ChannelHandlerContext ctx, int streamId, int promisedStreamId,
|
||||||
|
Http2Headers headers, int padding) throws Http2Exception {
|
||||||
|
// A client cannot push.
|
||||||
|
if (connection().isServer()) {
|
||||||
|
throw connectionError(PROTOCOL_ERROR, "A client cannot push.");
|
||||||
|
}
|
||||||
|
|
||||||
|
Http2Stream parentStream = connection.stream(streamId);
|
||||||
|
|
||||||
|
if (shouldIgnoreHeadersOrDataFrame(ctx, streamId, parentStream, "PUSH_PROMISE")) {
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
if (parentStream == null) {
|
||||||
|
throw connectionError(PROTOCOL_ERROR, "Stream %d does not exist", streamId);
|
||||||
|
}
|
||||||
|
|
||||||
|
switch (parentStream.state()) {
|
||||||
|
case OPEN:
|
||||||
|
case HALF_CLOSED_LOCAL:
|
||||||
|
// Allowed to receive push promise in these states.
|
||||||
|
break;
|
||||||
|
default:
|
||||||
|
// Connection error.
|
||||||
|
throw connectionError(PROTOCOL_ERROR,
|
||||||
|
"Stream %d in unexpected state for receiving push promise: %s",
|
||||||
|
parentStream.id(), parentStream.state());
|
||||||
|
}
|
||||||
|
|
||||||
|
if (!requestVerifier.isAuthoritative(ctx, headers)) {
|
||||||
|
throw streamError(promisedStreamId, PROTOCOL_ERROR,
|
||||||
|
"Promised request on stream %d for promised stream %d is not authoritative",
|
||||||
|
streamId, promisedStreamId);
|
||||||
|
}
|
||||||
|
if (!requestVerifier.isCacheable(headers)) {
|
||||||
|
throw streamError(promisedStreamId, PROTOCOL_ERROR,
|
||||||
|
"Promised request on stream %d for promised stream %d is not known to be cacheable",
|
||||||
|
streamId, promisedStreamId);
|
||||||
|
}
|
||||||
|
if (!requestVerifier.isSafe(headers)) {
|
||||||
|
throw streamError(promisedStreamId, PROTOCOL_ERROR,
|
||||||
|
"Promised request on stream %d for promised stream %d is not known to be safe",
|
||||||
|
streamId, promisedStreamId);
|
||||||
|
}
|
||||||
|
|
||||||
|
// Reserve the push stream based with a priority based on the current stream's priority.
|
||||||
|
connection.remote().reservePushStream(promisedStreamId, parentStream);
|
||||||
|
|
||||||
|
listener.onPushPromiseRead(ctx, streamId, promisedStreamId, headers, padding);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onGoAwayRead(ChannelHandlerContext ctx, int lastStreamId, long errorCode, ByteBuf debugData)
|
||||||
|
throws Http2Exception {
|
||||||
|
onGoAwayRead0(ctx, lastStreamId, errorCode, debugData);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onWindowUpdateRead(ChannelHandlerContext ctx, int streamId, int windowSizeIncrement)
|
||||||
|
throws Http2Exception {
|
||||||
|
Http2Stream stream = connection.stream(streamId);
|
||||||
|
if (stream == null || stream.state() == CLOSED || streamCreatedAfterGoAwaySent(streamId)) {
|
||||||
|
// Ignore this frame.
|
||||||
|
verifyStreamMayHaveExisted(streamId);
|
||||||
|
return;
|
||||||
|
}
|
||||||
|
|
||||||
|
// Update the outbound flow control window.
|
||||||
|
encoder.flowController().incrementWindowSize(stream, windowSizeIncrement);
|
||||||
|
|
||||||
|
listener.onWindowUpdateRead(ctx, streamId, windowSizeIncrement);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onUnknownFrame(ChannelHandlerContext ctx, byte frameType, int streamId, Http2Flags flags,
|
||||||
|
ByteBuf payload) throws Http2Exception {
|
||||||
|
onUnknownFrame0(ctx, frameType, streamId, flags, payload);
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Helper method to determine if a frame that has the semantics of headers or data should be ignored for the
|
||||||
|
* {@code stream} (which may be {@code null}) associated with {@code streamId}.
|
||||||
|
*/
|
||||||
|
private boolean shouldIgnoreHeadersOrDataFrame(ChannelHandlerContext ctx, int streamId, Http2Stream stream,
|
||||||
|
String frameName) throws Http2Exception {
|
||||||
|
if (stream == null) {
|
||||||
|
if (streamCreatedAfterGoAwaySent(streamId)) {
|
||||||
|
logger.info("{} ignoring {} frame for stream {}. Stream sent after GOAWAY sent",
|
||||||
|
ctx.channel(), frameName, streamId);
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
// Its possible that this frame would result in stream ID out of order creation (PROTOCOL ERROR) and its
|
||||||
|
// also possible that this frame is received on a CLOSED stream (STREAM_CLOSED after a RST_STREAM is
|
||||||
|
// sent). We don't have enough information to know for sure, so we choose the lesser of the two errors.
|
||||||
|
throw streamError(streamId, STREAM_CLOSED, "Received %s frame for an unknown stream %d",
|
||||||
|
frameName, streamId);
|
||||||
|
} else if (stream.isResetSent() || streamCreatedAfterGoAwaySent(streamId)) {
|
||||||
|
if (logger.isInfoEnabled()) {
|
||||||
|
logger.info("{} ignoring {} frame for stream {} {}", ctx.channel(), frameName,
|
||||||
|
stream.isResetSent() ? "RST_STREAM sent." :
|
||||||
|
("Stream created after GOAWAY sent. Last known stream by peer " +
|
||||||
|
connection.remote().lastStreamKnownByPeer()));
|
||||||
|
}
|
||||||
|
return true;
|
||||||
|
}
|
||||||
|
return false;
|
||||||
|
}
|
||||||
|
|
||||||
|
/**
|
||||||
|
* Helper method for determining whether or not to ignore inbound frames. A stream is considered to be created
|
||||||
|
* after a {@code GOAWAY} is sent if the following conditions hold:
|
||||||
|
* <p/>
|
||||||
|
* <ul>
|
||||||
|
* <li>A {@code GOAWAY} must have been sent by the local endpoint</li>
|
||||||
|
* <li>The {@code streamId} must identify a legitimate stream id for the remote endpoint to be creating</li>
|
||||||
|
* <li>{@code streamId} is greater than the Last Known Stream ID which was sent by the local endpoint
|
||||||
|
* in the last {@code GOAWAY} frame</li>
|
||||||
|
* </ul>
|
||||||
|
* <p/>
|
||||||
|
*/
|
||||||
|
private boolean streamCreatedAfterGoAwaySent(int streamId) {
|
||||||
|
Endpoint<?> remote = connection.remote();
|
||||||
|
return connection.goAwaySent() && remote.isValidStreamId(streamId) &&
|
||||||
|
streamId > remote.lastStreamKnownByPeer();
|
||||||
|
}
|
||||||
|
|
||||||
|
private void verifyStreamMayHaveExisted(int streamId) throws Http2Exception {
|
||||||
|
if (!connection.streamMayHaveExisted(streamId)) {
|
||||||
|
throw connectionError(PROTOCOL_ERROR, "Stream %d does not exist", streamId);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
private final class PrefaceFrameListener implements Http2FrameListener {
|
||||||
|
/**
|
||||||
|
* Verifies that the HTTP/2 connection preface has been received from the remote endpoint.
|
||||||
|
* It is possible that the current call to
|
||||||
|
* {@link Http2FrameReader#readFrame(ChannelHandlerContext, ByteBuf, Http2FrameListener)} will have multiple
|
||||||
|
* frames to dispatch. So it may be OK for this class to get legitimate frames for the first readFrame.
|
||||||
|
*/
|
||||||
|
private void verifyPrefaceReceived() throws Http2Exception {
|
||||||
|
if (!prefaceReceived()) {
|
||||||
|
throw connectionError(PROTOCOL_ERROR, "Received non-SETTINGS as first frame.");
|
||||||
|
}
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public int onDataRead(ChannelHandlerContext ctx, int streamId, ByteBuf data, int padding, boolean endOfStream)
|
||||||
|
throws Http2Exception {
|
||||||
|
verifyPrefaceReceived();
|
||||||
|
return internalFrameListener.onDataRead(ctx, streamId, data, padding, endOfStream);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onHeadersRead(ChannelHandlerContext ctx, int streamId, Http2Headers headers, int padding,
|
||||||
|
boolean endOfStream) throws Http2Exception {
|
||||||
|
verifyPrefaceReceived();
|
||||||
|
internalFrameListener.onHeadersRead(ctx, streamId, headers, padding, endOfStream);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onHeadersRead(ChannelHandlerContext ctx, int streamId, Http2Headers headers, int streamDependency,
|
||||||
|
short weight, boolean exclusive, int padding, boolean endOfStream) throws Http2Exception {
|
||||||
|
verifyPrefaceReceived();
|
||||||
|
internalFrameListener.onHeadersRead(ctx, streamId, headers, streamDependency, weight,
|
||||||
|
exclusive, padding, endOfStream);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onPriorityRead(ChannelHandlerContext ctx, int streamId, int streamDependency, short weight,
|
||||||
|
boolean exclusive) throws Http2Exception {
|
||||||
|
verifyPrefaceReceived();
|
||||||
|
internalFrameListener.onPriorityRead(ctx, streamId, streamDependency, weight, exclusive);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onRstStreamRead(ChannelHandlerContext ctx, int streamId, long errorCode) throws Http2Exception {
|
||||||
|
verifyPrefaceReceived();
|
||||||
|
internalFrameListener.onRstStreamRead(ctx, streamId, errorCode);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onSettingsAckRead(ChannelHandlerContext ctx) throws Http2Exception {
|
||||||
|
verifyPrefaceReceived();
|
||||||
|
internalFrameListener.onSettingsAckRead(ctx);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onSettingsRead(ChannelHandlerContext ctx, Http2Settings settings) throws Http2Exception {
|
||||||
|
// The first settings should change the internalFrameListener to the "real" listener
|
||||||
|
// that expects the preface to be verified.
|
||||||
|
if (!prefaceReceived()) {
|
||||||
|
internalFrameListener = new FrameReadListener();
|
||||||
|
}
|
||||||
|
internalFrameListener.onSettingsRead(ctx, settings);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onPingRead(ChannelHandlerContext ctx, ByteBuf data) throws Http2Exception {
|
||||||
|
verifyPrefaceReceived();
|
||||||
|
internalFrameListener.onPingRead(ctx, data);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onPingAckRead(ChannelHandlerContext ctx, ByteBuf data) throws Http2Exception {
|
||||||
|
verifyPrefaceReceived();
|
||||||
|
internalFrameListener.onPingAckRead(ctx, data);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onPushPromiseRead(ChannelHandlerContext ctx, int streamId, int promisedStreamId,
|
||||||
|
Http2Headers headers, int padding) throws Http2Exception {
|
||||||
|
verifyPrefaceReceived();
|
||||||
|
internalFrameListener.onPushPromiseRead(ctx, streamId, promisedStreamId, headers, padding);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onGoAwayRead(ChannelHandlerContext ctx, int lastStreamId, long errorCode, ByteBuf debugData)
|
||||||
|
throws Http2Exception {
|
||||||
|
onGoAwayRead0(ctx, lastStreamId, errorCode, debugData);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onWindowUpdateRead(ChannelHandlerContext ctx, int streamId, int windowSizeIncrement)
|
||||||
|
throws Http2Exception {
|
||||||
|
verifyPrefaceReceived();
|
||||||
|
internalFrameListener.onWindowUpdateRead(ctx, streamId, windowSizeIncrement);
|
||||||
|
}
|
||||||
|
|
||||||
|
@Override
|
||||||
|
public void onUnknownFrame(ChannelHandlerContext ctx, byte frameType, int streamId, Http2Flags flags,
|
||||||
|
ByteBuf payload) throws Http2Exception {
|
||||||
|
onUnknownFrame0(ctx, frameType, streamId, flags, payload);
|
||||||
|
}
|
||||||
|
}
|
||||||
|
}
|
||||||
Loading…
Reference in New Issue