author | erikj |
Tue, 12 Sep 2017 19:03:39 +0200 | |
changeset 47216 | 71c04702a3d5 |
parent 42460 | jdk/src/jdk.incubator.httpclient/share/classes/jdk/incubator/http/internal/frame/FramesDecoder.java@7133f144981a |
child 48083 | b1c1b4ef4be2 |
child 55763 | 634d8e14c172 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2015, 2016, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package jdk.incubator.http.internal.frame; |
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import jdk.incubator.http.internal.common.ByteBufferReference; |
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import jdk.incubator.http.internal.common.Log; |
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import jdk.incubator.http.internal.common.Utils; |
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import java.io.IOException; |
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import java.nio.ByteBuffer; |
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import java.util.ArrayDeque; |
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import java.util.ArrayList; |
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import java.util.List; |
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/** |
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* Frames Decoder |
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* <p> |
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* collect buffers until frame decoding is possible, |
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* all decoded frames are passed to the FrameProcessor callback in order of decoding. |
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* |
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* It's a stateful class due to the fact that FramesDecoder stores buffers inside. |
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* Should be allocated only the single instance per connection. |
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*/ |
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public class FramesDecoder { |
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@FunctionalInterface |
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public interface FrameProcessor { |
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void processFrame(Http2Frame frame) throws IOException; |
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} |
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private final FrameProcessor frameProcessor; |
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private final int maxFrameSize; |
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private ByteBufferReference currentBuffer; // current buffer either null or hasRemaining |
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private final java.util.Queue<ByteBufferReference> tailBuffers = new ArrayDeque<>(); |
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private int tailSize = 0; |
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private boolean slicedToDataFrame = false; |
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private final List<ByteBufferReference> prepareToRelease = new ArrayList<>(); |
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// if true - Frame Header was parsed (9 bytes consumed) and subsequent fields have meaning |
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// otherwise - stopped at frames boundary |
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private boolean frameHeaderParsed = false; |
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private int frameLength; |
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private int frameType; |
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private int frameFlags; |
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private int frameStreamid; |
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/** |
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* Creates Frame Decoder |
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* |
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* @param frameProcessor - callback for decoded frames |
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*/ |
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public FramesDecoder(FrameProcessor frameProcessor) { |
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this(frameProcessor, 16 * 1024); |
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} |
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/** |
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* Creates Frame Decoder |
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* @param frameProcessor - callback for decoded frames |
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* @param maxFrameSize - maxFrameSize accepted by this decoder |
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*/ |
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public FramesDecoder(FrameProcessor frameProcessor, int maxFrameSize) { |
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this.frameProcessor = frameProcessor; |
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this.maxFrameSize = Math.min(Math.max(16 * 1024, maxFrameSize), 16 * 1024 * 1024 - 1); |
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} |
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/** |
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* put next buffer into queue, |
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* if frame decoding is possible - decode all buffers and invoke FrameProcessor |
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* |
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* @param buffer |
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* @throws IOException |
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*/ |
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public void decode(ByteBufferReference buffer) throws IOException { |
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int remaining = buffer.get().remaining(); |
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if (remaining > 0) { |
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if (currentBuffer == null) { |
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currentBuffer = buffer; |
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} else { |
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tailBuffers.add(buffer); |
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tailSize += remaining; |
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} |
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} |
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Http2Frame frame; |
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while ((frame = nextFrame()) != null) { |
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frameProcessor.processFrame(frame); |
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frameProcessed(); |
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} |
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} |
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private Http2Frame nextFrame() throws IOException { |
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while (true) { |
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if (currentBuffer == null) { |
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return null; // no data at all |
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} |
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if (!frameHeaderParsed) { |
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if (currentBuffer.get().remaining() + tailSize >= Http2Frame.FRAME_HEADER_SIZE) { |
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parseFrameHeader(); |
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if (frameLength > maxFrameSize) { |
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128 |
// connection error |
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return new MalformedFrame(ErrorFrame.FRAME_SIZE_ERROR, |
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"Frame type("+frameType+") " +"length("+frameLength+") exceeds MAX_FRAME_SIZE("+ maxFrameSize+")"); |
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} |
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frameHeaderParsed = true; |
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133 |
} else { |
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return null; // no data for frame header |
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135 |
} |
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136 |
} |
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137 |
if ((frameLength == 0) || |
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(currentBuffer != null && currentBuffer.get().remaining() + tailSize >= frameLength)) { |
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Http2Frame frame = parseFrameBody(); |
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frameHeaderParsed = false; |
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// frame == null means we have to skip this frame and try parse next |
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142 |
if (frame != null) { |
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143 |
return frame; |
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144 |
} |
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145 |
} else { |
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return null; // no data for the whole frame header |
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147 |
} |
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148 |
} |
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149 |
} |
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150 |
|
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151 |
private void frameProcessed() { |
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prepareToRelease.forEach(ByteBufferReference::clear); |
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prepareToRelease.clear(); |
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154 |
} |
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155 |
|
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private void parseFrameHeader() throws IOException { |
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int x = getInt(); |
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158 |
this.frameLength = x >> 8; |
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this.frameType = x & 0xff; |
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this.frameFlags = getByte(); |
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161 |
this.frameStreamid = getInt() & 0x7fffffff; |
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162 |
// R: A reserved 1-bit field. The semantics of this bit are undefined, |
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163 |
// MUST be ignored when receiving. |
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164 |
} |
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165 |
|
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166 |
// move next buffer from tailBuffers to currentBuffer if required |
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167 |
private void nextBuffer() { |
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|
168 |
if (!currentBuffer.get().hasRemaining()) { |
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169 |
if (!slicedToDataFrame) { |
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prepareToRelease.add(currentBuffer); |
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171 |
} |
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slicedToDataFrame = false; |
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currentBuffer = tailBuffers.poll(); |
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|
174 |
if (currentBuffer != null) { |
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|
175 |
tailSize -= currentBuffer.get().remaining(); |
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|
176 |
} |
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177 |
} |
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|
178 |
} |
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|
179 |
|
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180 |
public int getByte() { |
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181 |
ByteBuffer buf = currentBuffer.get(); |
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182 |
int res = buf.get() & 0xff; |
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|
183 |
nextBuffer(); |
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|
184 |
return res; |
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|
185 |
} |
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|
186 |
|
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|
187 |
public int getShort() { |
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|
188 |
ByteBuffer buf = currentBuffer.get(); |
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|
189 |
if (buf.remaining() >= 2) { |
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|
190 |
int res = buf.getShort() & 0xffff; |
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|
191 |
nextBuffer(); |
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|
192 |
return res; |
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|
193 |
} |
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|
194 |
int val = getByte(); |
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|
195 |
val = (val << 8) + getByte(); |
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|
196 |
return val; |
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|
197 |
} |
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|
198 |
|
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|
199 |
public int getInt() { |
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|
200 |
ByteBuffer buf = currentBuffer.get(); |
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|
201 |
if (buf.remaining() >= 4) { |
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|
202 |
int res = buf.getInt(); |
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|
203 |
nextBuffer(); |
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|
204 |
return res; |
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|
205 |
} |
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|
206 |
int val = getByte(); |
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|
207 |
val = (val << 8) + getByte(); |
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|
208 |
val = (val << 8) + getByte(); |
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|
209 |
val = (val << 8) + getByte(); |
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|
210 |
return val; |
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|
211 |
|
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|
212 |
} |
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|
213 |
|
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|
214 |
public byte[] getBytes(int n) { |
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|
215 |
byte[] bytes = new byte[n]; |
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|
216 |
int offset = 0; |
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|
217 |
while (n > 0) { |
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|
218 |
ByteBuffer buf = currentBuffer.get(); |
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|
219 |
int length = Math.min(n, buf.remaining()); |
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|
220 |
buf.get(bytes, offset, length); |
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|
221 |
offset += length; |
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|
222 |
n -= length; |
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|
223 |
nextBuffer(); |
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|
224 |
} |
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|
225 |
return bytes; |
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|
226 |
|
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|
227 |
} |
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|
228 |
|
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|
229 |
private ByteBufferReference[] getBuffers(boolean isDataFrame, int bytecount) { |
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|
230 |
List<ByteBufferReference> res = new ArrayList<>(); |
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|
231 |
while (bytecount > 0) { |
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|
232 |
ByteBuffer buf = currentBuffer.get(); |
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|
233 |
int remaining = buf.remaining(); |
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|
234 |
int extract = Math.min(remaining, bytecount); |
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|
235 |
ByteBuffer extractedBuf; |
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|
236 |
if (isDataFrame) { |
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|
237 |
extractedBuf = Utils.slice(buf, extract); |
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|
238 |
slicedToDataFrame = true; |
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|
239 |
} else { |
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|
240 |
// Header frames here |
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|
241 |
// HPACK decoding should performed under lock and immediately after frame decoding. |
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|
242 |
// in that case it is safe to release original buffer, |
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|
243 |
// because of sliced buffer has a very short life |
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|
244 |
extractedBuf = Utils.slice(buf, extract); |
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|
245 |
} |
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|
246 |
res.add(ByteBufferReference.of(extractedBuf)); |
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|
247 |
bytecount -= extract; |
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|
248 |
nextBuffer(); |
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|
249 |
} |
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|
250 |
return res.toArray(new ByteBufferReference[0]); |
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|
251 |
} |
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|
252 |
|
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|
253 |
public void skipBytes(int bytecount) { |
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|
254 |
while (bytecount > 0) { |
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|
255 |
ByteBuffer buf = currentBuffer.get(); |
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|
256 |
int remaining = buf.remaining(); |
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|
257 |
int extract = Math.min(remaining, bytecount); |
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changeset
|
258 |
buf.position(buf.position() + extract); |
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parents:
diff
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|
259 |
bytecount -= remaining; |
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parents:
diff
changeset
|
260 |
nextBuffer(); |
7133f144981a
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parents:
diff
changeset
|
261 |
} |
7133f144981a
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parents:
diff
changeset
|
262 |
} |
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parents:
diff
changeset
|
263 |
|
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parents:
diff
changeset
|
264 |
private Http2Frame parseFrameBody() throws IOException { |
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parents:
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|
265 |
assert frameHeaderParsed; |
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|
266 |
switch (frameType) { |
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|
267 |
case DataFrame.TYPE: |
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|
268 |
return parseDataFrame(frameLength, frameStreamid, frameFlags); |
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|
269 |
case HeadersFrame.TYPE: |
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diff
changeset
|
270 |
return parseHeadersFrame(frameLength, frameStreamid, frameFlags); |
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|
271 |
case PriorityFrame.TYPE: |
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|
272 |
return parsePriorityFrame(frameLength, frameStreamid, frameFlags); |
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|
273 |
case ResetFrame.TYPE: |
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parents:
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changeset
|
274 |
return parseResetFrame(frameLength, frameStreamid, frameFlags); |
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parents:
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|
275 |
case SettingsFrame.TYPE: |
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parents:
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changeset
|
276 |
return parseSettingsFrame(frameLength, frameStreamid, frameFlags); |
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parents:
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|
277 |
case PushPromiseFrame.TYPE: |
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parents:
diff
changeset
|
278 |
return parsePushPromiseFrame(frameLength, frameStreamid, frameFlags); |
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parents:
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|
279 |
case PingFrame.TYPE: |
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parents:
diff
changeset
|
280 |
return parsePingFrame(frameLength, frameStreamid, frameFlags); |
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parents:
diff
changeset
|
281 |
case GoAwayFrame.TYPE: |
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parents:
diff
changeset
|
282 |
return parseGoAwayFrame(frameLength, frameStreamid, frameFlags); |
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parents:
diff
changeset
|
283 |
case WindowUpdateFrame.TYPE: |
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parents:
diff
changeset
|
284 |
return parseWindowUpdateFrame(frameLength, frameStreamid, frameFlags); |
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parents:
diff
changeset
|
285 |
case ContinuationFrame.TYPE: |
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parents:
diff
changeset
|
286 |
return parseContinuationFrame(frameLength, frameStreamid, frameFlags); |
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parents:
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changeset
|
287 |
default: |
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parents:
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|
288 |
// RFC 7540 4.1 |
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parents:
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changeset
|
289 |
// Implementations MUST ignore and discard any frame that has a type that is unknown. |
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changeset
|
290 |
Log.logTrace("Unknown incoming frame type: {0}", frameType); |
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parents:
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changeset
|
291 |
skipBytes(frameLength); |
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parents:
diff
changeset
|
292 |
return null; |
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parents:
diff
changeset
|
293 |
} |
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parents:
diff
changeset
|
294 |
} |
7133f144981a
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parents:
diff
changeset
|
295 |
|
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parents:
diff
changeset
|
296 |
private Http2Frame parseDataFrame(int frameLength, int streamid, int flags) { |
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parents:
diff
changeset
|
297 |
// non-zero stream |
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parents:
diff
changeset
|
298 |
if (streamid == 0) { |
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parents:
diff
changeset
|
299 |
return new MalformedFrame(ErrorFrame.PROTOCOL_ERROR, "zero streamId for DataFrame"); |
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parents:
diff
changeset
|
300 |
} |
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michaelm
parents:
diff
changeset
|
301 |
int padLength = 0; |
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parents:
diff
changeset
|
302 |
if ((flags & DataFrame.PADDED) != 0) { |
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michaelm
parents:
diff
changeset
|
303 |
padLength = getByte(); |
7133f144981a
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michaelm
parents:
diff
changeset
|
304 |
if(padLength >= frameLength) { |
7133f144981a
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michaelm
parents:
diff
changeset
|
305 |
return new MalformedFrame(ErrorFrame.PROTOCOL_ERROR, |
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michaelm
parents:
diff
changeset
|
306 |
"the length of the padding is the length of the frame payload or greater"); |
7133f144981a
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michaelm
parents:
diff
changeset
|
307 |
} |
7133f144981a
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michaelm
parents:
diff
changeset
|
308 |
frameLength--; |
7133f144981a
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michaelm
parents:
diff
changeset
|
309 |
} |
7133f144981a
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michaelm
parents:
diff
changeset
|
310 |
DataFrame df = new DataFrame(streamid, flags, |
7133f144981a
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michaelm
parents:
diff
changeset
|
311 |
getBuffers(true, frameLength - padLength), padLength); |
7133f144981a
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michaelm
parents:
diff
changeset
|
312 |
skipBytes(padLength); |
7133f144981a
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michaelm
parents:
diff
changeset
|
313 |
return df; |
7133f144981a
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michaelm
parents:
diff
changeset
|
314 |
|
7133f144981a
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michaelm
parents:
diff
changeset
|
315 |
} |
7133f144981a
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michaelm
parents:
diff
changeset
|
316 |
|
7133f144981a
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michaelm
parents:
diff
changeset
|
317 |
private Http2Frame parseHeadersFrame(int frameLength, int streamid, int flags) { |
7133f144981a
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michaelm
parents:
diff
changeset
|
318 |
// non-zero stream |
7133f144981a
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michaelm
parents:
diff
changeset
|
319 |
if (streamid == 0) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
320 |
return new MalformedFrame(ErrorFrame.PROTOCOL_ERROR, "zero streamId for HeadersFrame"); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
321 |
} |
7133f144981a
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michaelm
parents:
diff
changeset
|
322 |
int padLength = 0; |
7133f144981a
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michaelm
parents:
diff
changeset
|
323 |
if ((flags & HeadersFrame.PADDED) != 0) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
324 |
padLength = getByte(); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
325 |
frameLength--; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
326 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
327 |
boolean hasPriority = (flags & HeadersFrame.PRIORITY) != 0; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
328 |
boolean exclusive = false; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
329 |
int streamDependency = 0; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
330 |
int weight = 0; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
331 |
if (hasPriority) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
332 |
int x = getInt(); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
333 |
exclusive = (x & 0x80000000) != 0; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
334 |
streamDependency = x & 0x7fffffff; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
335 |
weight = getByte(); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
336 |
frameLength -= 5; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
337 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
338 |
if(frameLength < padLength) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
339 |
return new MalformedFrame(ErrorFrame.PROTOCOL_ERROR, |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
340 |
"Padding exceeds the size remaining for the header block"); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
341 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
342 |
HeadersFrame hf = new HeadersFrame(streamid, flags, |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
343 |
getBuffers(false, frameLength - padLength), padLength); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
344 |
skipBytes(padLength); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
345 |
if (hasPriority) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
346 |
hf.setPriority(streamDependency, exclusive, weight); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
347 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
348 |
return hf; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
349 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
350 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
351 |
private Http2Frame parsePriorityFrame(int frameLength, int streamid, int flags) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
352 |
// non-zero stream; no flags |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
353 |
if (streamid == 0) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
354 |
return new MalformedFrame(ErrorFrame.PROTOCOL_ERROR, |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
355 |
"zero streamId for PriorityFrame"); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
356 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
357 |
if(frameLength != 5) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
358 |
skipBytes(frameLength); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
359 |
return new MalformedFrame(ErrorFrame.FRAME_SIZE_ERROR, streamid, |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
360 |
"PriorityFrame length is "+ frameLength+", expected 5"); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
361 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
362 |
int x = getInt(); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
363 |
int weight = getByte(); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
364 |
return new PriorityFrame(streamid, x & 0x7fffffff, (x & 0x80000000) != 0, weight); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
365 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
366 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
367 |
private Http2Frame parseResetFrame(int frameLength, int streamid, int flags) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
368 |
// non-zero stream; no flags |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
369 |
if (streamid == 0) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
370 |
return new MalformedFrame(ErrorFrame.PROTOCOL_ERROR, |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
371 |
"zero streamId for ResetFrame"); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
372 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
373 |
if(frameLength != 4) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
374 |
return new MalformedFrame(ErrorFrame.FRAME_SIZE_ERROR, |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
375 |
"ResetFrame length is "+ frameLength+", expected 4"); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
376 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
377 |
return new ResetFrame(streamid, getInt()); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
378 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
379 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
380 |
private Http2Frame parseSettingsFrame(int frameLength, int streamid, int flags) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
381 |
// only zero stream |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
382 |
if (streamid != 0) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
383 |
return new MalformedFrame(ErrorFrame.PROTOCOL_ERROR, |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
384 |
"non-zero streamId for SettingsFrame"); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
385 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
386 |
if ((SettingsFrame.ACK & flags) != 0 && frameLength > 0) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
387 |
// RFC 7540 6.5 |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
388 |
// Receipt of a SETTINGS frame with the ACK flag set and a length |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
389 |
// field value other than 0 MUST be treated as a connection error |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
390 |
return new MalformedFrame(ErrorFrame.FRAME_SIZE_ERROR, |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
391 |
"ACK SettingsFrame is not empty"); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
392 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
393 |
if (frameLength % 6 != 0) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
394 |
return new MalformedFrame(ErrorFrame.FRAME_SIZE_ERROR, |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
395 |
"invalid SettingsFrame size: "+frameLength); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
396 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
397 |
SettingsFrame sf = new SettingsFrame(flags); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
398 |
int n = frameLength / 6; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
399 |
for (int i=0; i<n; i++) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
400 |
int id = getShort(); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
401 |
int val = getInt(); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
402 |
if (id > 0 && id <= SettingsFrame.MAX_PARAM) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
403 |
// a known parameter. Ignore otherwise |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
404 |
sf.setParameter(id, val); // TODO parameters validation |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
405 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
406 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
407 |
return sf; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
408 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
409 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
410 |
private Http2Frame parsePushPromiseFrame(int frameLength, int streamid, int flags) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
411 |
// non-zero stream |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
412 |
if (streamid == 0) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
413 |
return new MalformedFrame(ErrorFrame.PROTOCOL_ERROR, |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
414 |
"zero streamId for PushPromiseFrame"); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
415 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
416 |
int padLength = 0; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
417 |
if ((flags & PushPromiseFrame.PADDED) != 0) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
418 |
padLength = getByte(); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
419 |
frameLength--; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
420 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
421 |
int promisedStream = getInt() & 0x7fffffff; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
422 |
frameLength -= 4; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
423 |
if(frameLength < padLength) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
424 |
return new MalformedFrame(ErrorFrame.PROTOCOL_ERROR, |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
425 |
"Padding exceeds the size remaining for the PushPromiseFrame"); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
426 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
427 |
PushPromiseFrame ppf = new PushPromiseFrame(streamid, flags, promisedStream, |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
428 |
getBuffers(false, frameLength - padLength), padLength); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
429 |
skipBytes(padLength); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
430 |
return ppf; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
431 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
432 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
433 |
private Http2Frame parsePingFrame(int frameLength, int streamid, int flags) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
434 |
// only zero stream |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
435 |
if (streamid != 0) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
436 |
return new MalformedFrame(ErrorFrame.PROTOCOL_ERROR, |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
437 |
"non-zero streamId for PingFrame"); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
438 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
439 |
if(frameLength != 8) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
440 |
return new MalformedFrame(ErrorFrame.FRAME_SIZE_ERROR, |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
441 |
"PingFrame length is "+ frameLength+", expected 8"); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
442 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
443 |
return new PingFrame(flags, getBytes(8)); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
444 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
445 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
446 |
private Http2Frame parseGoAwayFrame(int frameLength, int streamid, int flags) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
447 |
// only zero stream; no flags |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
448 |
if (streamid != 0) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
449 |
return new MalformedFrame(ErrorFrame.PROTOCOL_ERROR, |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
450 |
"non-zero streamId for GoAwayFrame"); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
451 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
452 |
if (frameLength < 8) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
453 |
return new MalformedFrame(ErrorFrame.FRAME_SIZE_ERROR, |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
454 |
"Invalid GoAway frame size"); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
455 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
456 |
int lastStream = getInt() & 0x7fffffff; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
457 |
int errorCode = getInt(); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
458 |
byte[] debugData = getBytes(frameLength - 8); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
459 |
if (debugData.length > 0) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
460 |
Log.logError("GoAway debugData " + new String(debugData)); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
461 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
462 |
return new GoAwayFrame(lastStream, errorCode, debugData); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
463 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
464 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
465 |
private Http2Frame parseWindowUpdateFrame(int frameLength, int streamid, int flags) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
466 |
// any stream; no flags |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
467 |
if(frameLength != 4) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
468 |
return new MalformedFrame(ErrorFrame.FRAME_SIZE_ERROR, |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
469 |
"WindowUpdateFrame length is "+ frameLength+", expected 4"); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
470 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
471 |
return new WindowUpdateFrame(streamid, getInt() & 0x7fffffff); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
472 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
473 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
474 |
private Http2Frame parseContinuationFrame(int frameLength, int streamid, int flags) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
475 |
// non-zero stream; |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
476 |
if (streamid == 0) { |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
477 |
return new MalformedFrame(ErrorFrame.PROTOCOL_ERROR, |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
478 |
"zero streamId for ContinuationFrame"); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
479 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
480 |
return new ContinuationFrame(streamid, flags, getBuffers(false, frameLength)); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
481 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
482 |
|
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
483 |
} |