6a43807843
Motivation: We should update our code to use lamdas whenever possible Modifications: Use lambdas when possible Result: Cleanup code for Java8
300 lines
13 KiB
Java
300 lines
13 KiB
Java
/*
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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,
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* version 2.0 (the "License"); you may not use this file except in compliance
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* with the License. You may obtain a 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
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*/
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package io.netty.handler.codec.http.websocketx.extensions.compression;
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import io.netty.buffer.ByteBuf;
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import io.netty.buffer.ByteBufUtil;
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import io.netty.buffer.Unpooled;
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import io.netty.channel.embedded.EmbeddedChannel;
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import io.netty.handler.codec.EncoderException;
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import io.netty.handler.codec.compression.ZlibCodecFactory;
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import io.netty.handler.codec.compression.ZlibWrapper;
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import io.netty.handler.codec.http.websocketx.BinaryWebSocketFrame;
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import io.netty.handler.codec.http.websocketx.ContinuationWebSocketFrame;
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import io.netty.handler.codec.http.websocketx.TextWebSocketFrame;
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import io.netty.handler.codec.http.websocketx.WebSocketFrame;
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import io.netty.handler.codec.http.websocketx.extensions.WebSocketExtension;
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import io.netty.handler.codec.http.websocketx.extensions.WebSocketExtensionFilter;
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import org.junit.Test;
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import java.util.Arrays;
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import java.util.Random;
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import static io.netty.handler.codec.http.websocketx.extensions.WebSocketExtensionFilter.*;
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import static io.netty.handler.codec.http.websocketx.extensions.compression.DeflateDecoder.*;
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import static io.netty.util.CharsetUtil.*;
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import static org.junit.Assert.*;
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public class PerMessageDeflateEncoderTest {
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private static final Random random = new Random();
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@Test
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public void testCompressedFrame() {
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EmbeddedChannel encoderChannel = new EmbeddedChannel(new PerMessageDeflateEncoder(9, 15, false));
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EmbeddedChannel decoderChannel = new EmbeddedChannel(
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ZlibCodecFactory.newZlibDecoder(ZlibWrapper.NONE));
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// initialize
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byte[] payload = new byte[300];
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random.nextBytes(payload);
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BinaryWebSocketFrame frame = new BinaryWebSocketFrame(true,
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WebSocketExtension.RSV3, Unpooled.wrappedBuffer(payload));
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// execute
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assertTrue(encoderChannel.writeOutbound(frame));
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BinaryWebSocketFrame compressedFrame = encoderChannel.readOutbound();
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// test
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assertNotNull(compressedFrame);
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assertNotNull(compressedFrame.content());
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assertEquals(WebSocketExtension.RSV1 | WebSocketExtension.RSV3, compressedFrame.rsv());
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assertTrue(decoderChannel.writeInbound(compressedFrame.content()));
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assertTrue(decoderChannel.writeInbound(DeflateDecoder.FRAME_TAIL.duplicate()));
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ByteBuf uncompressedPayload = decoderChannel.readInbound();
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assertEquals(300, uncompressedPayload.readableBytes());
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byte[] finalPayload = new byte[300];
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uncompressedPayload.readBytes(finalPayload);
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assertArrayEquals(finalPayload, payload);
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uncompressedPayload.release();
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}
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@Test
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public void testAlreadyCompressedFrame() {
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EmbeddedChannel encoderChannel = new EmbeddedChannel(new PerMessageDeflateEncoder(9, 15, false));
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// initialize
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byte[] payload = new byte[300];
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random.nextBytes(payload);
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BinaryWebSocketFrame frame = new BinaryWebSocketFrame(true,
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WebSocketExtension.RSV3 | WebSocketExtension.RSV1,
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Unpooled.wrappedBuffer(payload));
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// execute
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assertTrue(encoderChannel.writeOutbound(frame));
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BinaryWebSocketFrame newFrame = encoderChannel.readOutbound();
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// test
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assertNotNull(newFrame);
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assertNotNull(newFrame.content());
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assertEquals(WebSocketExtension.RSV3 | WebSocketExtension.RSV1, newFrame.rsv());
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assertEquals(300, newFrame.content().readableBytes());
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byte[] finalPayload = new byte[300];
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newFrame.content().readBytes(finalPayload);
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assertArrayEquals(finalPayload, payload);
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newFrame.release();
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}
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@Test
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public void testFragmentedFrame() {
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EmbeddedChannel encoderChannel = new EmbeddedChannel(new PerMessageDeflateEncoder(9, 15, false,
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NEVER_SKIP));
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EmbeddedChannel decoderChannel = new EmbeddedChannel(
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ZlibCodecFactory.newZlibDecoder(ZlibWrapper.NONE));
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// initialize
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byte[] payload1 = new byte[100];
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random.nextBytes(payload1);
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byte[] payload2 = new byte[100];
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random.nextBytes(payload2);
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byte[] payload3 = new byte[100];
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random.nextBytes(payload3);
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BinaryWebSocketFrame frame1 = new BinaryWebSocketFrame(false,
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WebSocketExtension.RSV3,
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Unpooled.wrappedBuffer(payload1));
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ContinuationWebSocketFrame frame2 = new ContinuationWebSocketFrame(false,
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WebSocketExtension.RSV3,
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Unpooled.wrappedBuffer(payload2));
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ContinuationWebSocketFrame frame3 = new ContinuationWebSocketFrame(true,
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WebSocketExtension.RSV3,
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Unpooled.wrappedBuffer(payload3));
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// execute
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assertTrue(encoderChannel.writeOutbound(frame1));
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assertTrue(encoderChannel.writeOutbound(frame2));
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assertTrue(encoderChannel.writeOutbound(frame3));
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BinaryWebSocketFrame compressedFrame1 = encoderChannel.readOutbound();
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ContinuationWebSocketFrame compressedFrame2 = encoderChannel.readOutbound();
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ContinuationWebSocketFrame compressedFrame3 = encoderChannel.readOutbound();
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// test
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assertNotNull(compressedFrame1);
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assertNotNull(compressedFrame2);
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assertNotNull(compressedFrame3);
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assertEquals(WebSocketExtension.RSV1 | WebSocketExtension.RSV3, compressedFrame1.rsv());
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assertEquals(WebSocketExtension.RSV3, compressedFrame2.rsv());
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assertEquals(WebSocketExtension.RSV3, compressedFrame3.rsv());
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assertFalse(compressedFrame1.isFinalFragment());
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assertFalse(compressedFrame2.isFinalFragment());
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assertTrue(compressedFrame3.isFinalFragment());
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assertTrue(decoderChannel.writeInbound(compressedFrame1.content()));
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ByteBuf uncompressedPayload1 = decoderChannel.readInbound();
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byte[] finalPayload1 = new byte[100];
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uncompressedPayload1.readBytes(finalPayload1);
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assertArrayEquals(finalPayload1, payload1);
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uncompressedPayload1.release();
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assertTrue(decoderChannel.writeInbound(compressedFrame2.content()));
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ByteBuf uncompressedPayload2 = decoderChannel.readInbound();
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byte[] finalPayload2 = new byte[100];
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uncompressedPayload2.readBytes(finalPayload2);
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assertArrayEquals(finalPayload2, payload2);
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uncompressedPayload2.release();
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assertTrue(decoderChannel.writeInbound(compressedFrame3.content()));
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assertTrue(decoderChannel.writeInbound(DeflateDecoder.FRAME_TAIL.duplicate()));
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ByteBuf uncompressedPayload3 = decoderChannel.readInbound();
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byte[] finalPayload3 = new byte[100];
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uncompressedPayload3.readBytes(finalPayload3);
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assertArrayEquals(finalPayload3, payload3);
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uncompressedPayload3.release();
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}
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@Test
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public void testCompressionSkipForBinaryFrame() {
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EmbeddedChannel encoderChannel = new EmbeddedChannel(new PerMessageDeflateEncoder(9, 15, false,
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ALWAYS_SKIP));
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byte[] payload = new byte[300];
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random.nextBytes(payload);
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WebSocketFrame binaryFrame = new BinaryWebSocketFrame(Unpooled.wrappedBuffer(payload));
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assertTrue(encoderChannel.writeOutbound(binaryFrame.copy()));
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WebSocketFrame outboundFrame = encoderChannel.readOutbound();
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assertEquals(0, outboundFrame.rsv());
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assertArrayEquals(payload, ByteBufUtil.getBytes(outboundFrame.content()));
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assertTrue(outboundFrame.release());
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assertFalse(encoderChannel.finish());
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}
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@Test
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public void testSelectivityCompressionSkip() {
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WebSocketExtensionFilter selectivityCompressionFilter =
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frame -> (frame instanceof TextWebSocketFrame || frame instanceof BinaryWebSocketFrame)
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&& frame.content().readableBytes() < 100;
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EmbeddedChannel encoderChannel = new EmbeddedChannel(
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new PerMessageDeflateEncoder(9, 15, false, selectivityCompressionFilter));
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EmbeddedChannel decoderChannel = new EmbeddedChannel(
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ZlibCodecFactory.newZlibDecoder(ZlibWrapper.NONE));
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String textPayload = "not compressed payload";
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byte[] binaryPayload = new byte[101];
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random.nextBytes(binaryPayload);
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WebSocketFrame textFrame = new TextWebSocketFrame(textPayload);
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BinaryWebSocketFrame binaryFrame = new BinaryWebSocketFrame(Unpooled.wrappedBuffer(binaryPayload));
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assertTrue(encoderChannel.writeOutbound(textFrame));
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assertTrue(encoderChannel.writeOutbound(binaryFrame));
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WebSocketFrame outboundTextFrame = encoderChannel.readOutbound();
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//compression skipped for textFrame
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assertEquals(0, outboundTextFrame.rsv());
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assertEquals(textPayload, outboundTextFrame.content().toString(UTF_8));
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assertTrue(outboundTextFrame.release());
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WebSocketFrame outboundBinaryFrame = encoderChannel.readOutbound();
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//compression not skipped for binaryFrame
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assertEquals(WebSocketExtension.RSV1, outboundBinaryFrame.rsv());
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assertTrue(decoderChannel.writeInbound(outboundBinaryFrame.content().retain()));
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ByteBuf uncompressedBinaryPayload = decoderChannel.readInbound();
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assertArrayEquals(binaryPayload, ByteBufUtil.getBytes(uncompressedBinaryPayload));
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assertTrue(outboundBinaryFrame.release());
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assertTrue(uncompressedBinaryPayload.release());
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assertFalse(encoderChannel.finish());
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assertFalse(decoderChannel.finish());
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}
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@Test(expected = EncoderException.class)
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public void testIllegalStateWhenCompressionInProgress() {
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WebSocketExtensionFilter selectivityCompressionFilter = frame -> frame.content().readableBytes() < 100;
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EmbeddedChannel encoderChannel = new EmbeddedChannel(
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new PerMessageDeflateEncoder(9, 15, false, selectivityCompressionFilter));
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byte[] firstPayload = new byte[200];
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random.nextBytes(firstPayload);
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byte[] finalPayload = new byte[90];
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random.nextBytes(finalPayload);
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BinaryWebSocketFrame firstPart = new BinaryWebSocketFrame(false, 0, Unpooled.wrappedBuffer(firstPayload));
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ContinuationWebSocketFrame finalPart = new ContinuationWebSocketFrame(true, 0,
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Unpooled.wrappedBuffer(finalPayload));
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assertTrue(encoderChannel.writeOutbound(firstPart));
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BinaryWebSocketFrame outboundFirstPart = encoderChannel.readOutbound();
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//first part is compressed
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assertEquals(WebSocketExtension.RSV1, outboundFirstPart.rsv());
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assertFalse(Arrays.equals(firstPayload, ByteBufUtil.getBytes(outboundFirstPart.content())));
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assertTrue(outboundFirstPart.release());
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//final part throwing exception
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try {
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encoderChannel.writeOutbound(finalPart);
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} finally {
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assertTrue(finalPart.release());
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assertFalse(encoderChannel.finishAndReleaseAll());
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}
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}
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@Test
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public void testEmptyFrameCompression() {
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EmbeddedChannel encoderChannel = new EmbeddedChannel(new PerMessageDeflateEncoder(9, 15, false));
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TextWebSocketFrame emptyFrame = new TextWebSocketFrame("");
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assertTrue(encoderChannel.writeOutbound(emptyFrame));
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TextWebSocketFrame emptyDeflateFrame = encoderChannel.readOutbound();
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assertEquals(WebSocketExtension.RSV1, emptyDeflateFrame.rsv());
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assertTrue(ByteBufUtil.equals(EMPTY_DEFLATE_BLOCK, emptyDeflateFrame.content()));
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// Unreleasable buffer
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assertFalse(emptyDeflateFrame.release());
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assertFalse(encoderChannel.finish());
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}
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@Test(expected = EncoderException.class)
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public void testCodecExceptionForNotFinEmptyFrame() {
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EmbeddedChannel encoderChannel = new EmbeddedChannel(new PerMessageDeflateEncoder(9, 15, false));
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TextWebSocketFrame emptyNotFinFrame = new TextWebSocketFrame(false, 0, "");
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try {
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encoderChannel.writeOutbound(emptyNotFinFrame);
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} finally {
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// EmptyByteBuf buffer
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assertFalse(emptyNotFinFrame.release());
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assertFalse(encoderChannel.finish());
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}
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}
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}
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