author | prappo |
Tue, 30 Jan 2018 20:43:32 +0000 | |
branch | http-client-branch |
changeset 56048 | f9b6016727b5 |
parent 48083 | b1c1b4ef4be2 |
child 56058 | a02d0098c630 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2015, 2018, 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.websocket; |
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|
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import jdk.incubator.http.WebSocket.MessagePart; |
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import jdk.incubator.http.internal.websocket.Frame.Opcode; |
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|
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import java.nio.ByteBuffer; |
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import java.nio.CharBuffer; |
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import java.nio.charset.CharacterCodingException; |
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import static java.lang.String.format; |
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import static java.nio.charset.StandardCharsets.UTF_8; |
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import static java.util.Objects.requireNonNull; |
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import static jdk.incubator.http.internal.common.Utils.dump; |
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import static jdk.incubator.http.internal.websocket.StatusCodes.NO_STATUS_CODE; |
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import static jdk.incubator.http.internal.websocket.StatusCodes.isLegalToReceiveFromServer; |
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|
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/* |
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* Consumes frame parts and notifies a message consumer, when there is |
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* sufficient data to produce a message, or part thereof. |
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* |
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* Data consumed but not yet translated is accumulated until it's sufficient to |
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* form a message. |
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*/ |
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/* Non-final for testing purposes only */ |
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class FrameConsumer implements Frame.Consumer { |
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private final static boolean DEBUG = true; |
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private final MessageStreamConsumer output; |
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private final UTF8AccumulatingDecoder decoder = new UTF8AccumulatingDecoder(); |
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private boolean fin; |
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private Opcode opcode, originatingOpcode; |
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private MessagePart part = MessagePart.WHOLE; |
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private long payloadLen; |
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private long unconsumedPayloadLen; |
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private ByteBuffer binaryData; |
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FrameConsumer(MessageStreamConsumer output) { |
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this.output = requireNonNull(output); |
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} |
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/* Exposed for testing purposes only */ |
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MessageStreamConsumer getOutput() { |
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return output; |
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} |
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@Override |
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public void fin(boolean value) { |
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if (DEBUG) { |
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System.out.printf("Reading fin: %s%n", value); |
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} |
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fin = value; |
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} |
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@Override |
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public void rsv1(boolean value) { |
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if (DEBUG) { |
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System.out.printf("Reading rsv1: %s%n", value); |
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} |
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if (value) { |
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throw new FailWebSocketException("Unexpected rsv1 bit"); |
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} |
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} |
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@Override |
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public void rsv2(boolean value) { |
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if (DEBUG) { |
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System.out.printf("Reading rsv2: %s%n", value); |
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} |
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if (value) { |
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throw new FailWebSocketException("Unexpected rsv2 bit"); |
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} |
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} |
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@Override |
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public void rsv3(boolean value) { |
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if (DEBUG) { |
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System.out.printf("Reading rsv3: %s%n", value); |
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} |
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if (value) { |
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throw new FailWebSocketException("Unexpected rsv3 bit"); |
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} |
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} |
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@Override |
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public void opcode(Opcode v) { |
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if (DEBUG) { |
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System.out.printf("Reading opcode: %s%n", v); |
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} |
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if (v == Opcode.PING || v == Opcode.PONG || v == Opcode.CLOSE) { |
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if (!fin) { |
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throw new FailWebSocketException("Fragmented control frame " + v); |
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} |
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opcode = v; |
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} else if (v == Opcode.TEXT || v == Opcode.BINARY) { |
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if (originatingOpcode != null) { |
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throw new FailWebSocketException( |
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format("Unexpected frame %s (fin=%s)", v, fin)); |
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} |
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opcode = v; |
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|
125 |
if (!fin) { |
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126 |
originatingOpcode = v; |
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127 |
} |
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128 |
} else if (v == Opcode.CONTINUATION) { |
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129 |
if (originatingOpcode == null) { |
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130 |
throw new FailWebSocketException( |
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131 |
format("Unexpected frame %s (fin=%s)", v, fin)); |
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132 |
} |
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133 |
opcode = v; |
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134 |
} else { |
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135 |
throw new FailWebSocketException("Unexpected opcode " + v); |
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136 |
} |
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|
137 |
} |
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|
138 |
|
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139 |
@Override |
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140 |
public void mask(boolean value) { |
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if (DEBUG) { |
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System.out.printf("Reading mask: %s%n", value); |
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143 |
} |
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144 |
if (value) { |
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|
145 |
throw new FailWebSocketException("Masked frame received"); |
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146 |
} |
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147 |
} |
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148 |
|
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149 |
@Override |
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150 |
public void payloadLen(long value) { |
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if (DEBUG) { |
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System.out.printf("Reading payloadLen: %s%n", value); |
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153 |
} |
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154 |
if (opcode.isControl()) { |
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155 |
if (value > 125) { |
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156 |
throw new FailWebSocketException( |
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|
157 |
format("%s's payload length %s", opcode, value)); |
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158 |
} |
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assert Opcode.CLOSE.isControl(); |
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160 |
if (opcode == Opcode.CLOSE && value == 1) { |
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|
161 |
throw new FailWebSocketException("Incomplete status code"); |
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|
162 |
} |
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|
163 |
} |
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|
164 |
payloadLen = value; |
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|
165 |
unconsumedPayloadLen = value; |
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|
166 |
} |
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|
167 |
|
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|
168 |
@Override |
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|
169 |
public void maskingKey(int value) { |
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|
170 |
// `FrameConsumer.mask(boolean)` is where a masked frame is detected and |
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|
171 |
// reported on; `FrameConsumer.mask(boolean)` MUST be invoked before |
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|
172 |
// this method; |
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|
173 |
// So this method (`maskingKey`) is not supposed to be invoked while |
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|
174 |
// reading a frame that has came from the server. If this method is |
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|
175 |
// invoked, then it's an error in implementation, thus InternalError |
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|
176 |
throw new InternalError(); |
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|
177 |
} |
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changeset
|
178 |
|
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|
179 |
@Override |
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|
180 |
public void payloadData(ByteBuffer data) { |
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181 |
if (DEBUG) { |
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|
182 |
System.out.printf("Reading payloadData: %s%n", data); |
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|
183 |
} |
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|
184 |
unconsumedPayloadLen -= data.remaining(); |
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|
185 |
boolean isLast = unconsumedPayloadLen == 0; |
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|
186 |
if (opcode.isControl()) { |
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|
187 |
if (binaryData != null) { // An intermediate or the last chunk |
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|
188 |
binaryData.put(data); |
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changeset
|
189 |
} else if (!isLast) { // The first chunk |
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|
190 |
int remaining = data.remaining(); |
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|
191 |
// It shouldn't be 125, otherwise the next chunk will be of size |
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|
192 |
// 0, which is not what Reader promises to deliver (eager |
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|
193 |
// reading) |
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|
194 |
assert remaining < 125 : dump(remaining); |
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|
195 |
binaryData = ByteBuffer.allocate(125).put(data); |
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|
196 |
} else { // The only chunk |
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changeset
|
197 |
binaryData = ByteBuffer.allocate(data.remaining()).put(data); |
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changeset
|
198 |
} |
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changeset
|
199 |
} else { |
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changeset
|
200 |
part = determinePart(isLast); |
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changeset
|
201 |
boolean text = opcode == Opcode.TEXT || originatingOpcode == Opcode.TEXT; |
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|
202 |
if (!text) { |
48083 | 203 |
output.onBinary(data.slice(), part); |
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|
204 |
data.position(data.limit()); // Consume |
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changeset
|
205 |
} else { |
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changeset
|
206 |
boolean binaryNonEmpty = data.hasRemaining(); |
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|
207 |
CharBuffer textData; |
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changeset
|
208 |
try { |
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changeset
|
209 |
textData = decoder.decode(data, part == MessagePart.WHOLE || part == MessagePart.LAST); |
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|
210 |
} catch (CharacterCodingException e) { |
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changeset
|
211 |
throw new FailWebSocketException( |
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changeset
|
212 |
"Invalid UTF-8 in frame " + opcode, StatusCodes.NOT_CONSISTENT) |
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changeset
|
213 |
.initCause(e); |
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parents:
diff
changeset
|
214 |
} |
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changeset
|
215 |
if (!(binaryNonEmpty && !textData.hasRemaining())) { |
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changeset
|
216 |
// If there's a binary data, that result in no text, then we |
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changeset
|
217 |
// don't deliver anything |
48083 | 218 |
output.onText(textData, part); |
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|
219 |
} |
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changeset
|
220 |
} |
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parents:
diff
changeset
|
221 |
} |
7133f144981a
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parents:
diff
changeset
|
222 |
} |
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changeset
|
223 |
|
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changeset
|
224 |
@Override |
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|
225 |
public void endFrame() { |
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|
226 |
if (DEBUG) { |
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|
227 |
System.out.println("End frame"); |
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|
228 |
} |
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changeset
|
229 |
if (opcode.isControl()) { |
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changeset
|
230 |
binaryData.flip(); |
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parents:
diff
changeset
|
231 |
} |
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changeset
|
232 |
switch (opcode) { |
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diff
changeset
|
233 |
case CLOSE: |
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|
234 |
char statusCode = NO_STATUS_CODE; |
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|
235 |
String reason = ""; |
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diff
changeset
|
236 |
if (payloadLen != 0) { |
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changeset
|
237 |
int len = binaryData.remaining(); |
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|
238 |
assert 2 <= len && len <= 125 : dump(len, payloadLen); |
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|
239 |
statusCode = binaryData.getChar(); |
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changeset
|
240 |
if (!isLegalToReceiveFromServer(statusCode)) { |
decbbff9fdb4
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changeset
|
241 |
throw new FailWebSocketException( |
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|
242 |
"Illegal status code: " + statusCode); |
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changeset
|
243 |
} |
42460
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changeset
|
244 |
try { |
7133f144981a
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changeset
|
245 |
reason = UTF_8.newDecoder().decode(binaryData).toString(); |
7133f144981a
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changeset
|
246 |
} catch (CharacterCodingException e) { |
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|
247 |
throw new FailWebSocketException("Illegal close reason") |
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|
248 |
.initCause(e); |
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parents:
diff
changeset
|
249 |
} |
7133f144981a
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parents:
diff
changeset
|
250 |
} |
7133f144981a
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parents:
diff
changeset
|
251 |
output.onClose(statusCode, reason); |
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michaelm
parents:
diff
changeset
|
252 |
break; |
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michaelm
parents:
diff
changeset
|
253 |
case PING: |
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parents:
diff
changeset
|
254 |
output.onPing(binaryData); |
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parents:
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changeset
|
255 |
binaryData = null; |
7133f144981a
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michaelm
parents:
diff
changeset
|
256 |
break; |
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parents:
diff
changeset
|
257 |
case PONG: |
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parents:
diff
changeset
|
258 |
output.onPong(binaryData); |
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parents:
diff
changeset
|
259 |
binaryData = null; |
7133f144981a
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michaelm
parents:
diff
changeset
|
260 |
break; |
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parents:
diff
changeset
|
261 |
default: |
7133f144981a
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changeset
|
262 |
assert opcode == Opcode.TEXT || opcode == Opcode.BINARY |
7133f144981a
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michaelm
parents:
diff
changeset
|
263 |
|| opcode == Opcode.CONTINUATION : dump(opcode); |
7133f144981a
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michaelm
parents:
diff
changeset
|
264 |
if (fin) { |
7133f144981a
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parents:
diff
changeset
|
265 |
// It is always the last chunk: |
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changeset
|
266 |
// either TEXT(FIN=TRUE)/BINARY(FIN=TRUE) or CONT(FIN=TRUE) |
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parents:
diff
changeset
|
267 |
originatingOpcode = null; |
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michaelm
parents:
diff
changeset
|
268 |
} |
7133f144981a
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michaelm
parents:
diff
changeset
|
269 |
break; |
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michaelm
parents:
diff
changeset
|
270 |
} |
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michaelm
parents:
diff
changeset
|
271 |
payloadLen = 0; |
7133f144981a
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michaelm
parents:
diff
changeset
|
272 |
opcode = null; |
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michaelm
parents:
diff
changeset
|
273 |
} |
7133f144981a
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michaelm
parents:
diff
changeset
|
274 |
|
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michaelm
parents:
diff
changeset
|
275 |
private MessagePart determinePart(boolean isLast) { |
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parents:
diff
changeset
|
276 |
boolean lastChunk = fin && isLast; |
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parents:
diff
changeset
|
277 |
switch (part) { |
7133f144981a
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parents:
diff
changeset
|
278 |
case LAST: |
7133f144981a
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michaelm
parents:
diff
changeset
|
279 |
case WHOLE: |
7133f144981a
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michaelm
parents:
diff
changeset
|
280 |
return lastChunk ? MessagePart.WHOLE : MessagePart.FIRST; |
7133f144981a
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michaelm
parents:
diff
changeset
|
281 |
case FIRST: |
7133f144981a
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michaelm
parents:
diff
changeset
|
282 |
case PART: |
7133f144981a
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michaelm
parents:
diff
changeset
|
283 |
return lastChunk ? MessagePart.LAST : MessagePart.PART; |
7133f144981a
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michaelm
parents:
diff
changeset
|
284 |
default: |
7133f144981a
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michaelm
parents:
diff
changeset
|
285 |
throw new InternalError(String.valueOf(part)); |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
286 |
} |
7133f144981a
8170648: Move java.net.http package out of Java SE to incubator namespace
michaelm
parents:
diff
changeset
|
287 |
} |
7133f144981a
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michaelm
parents:
diff
changeset
|
288 |
} |