Merge pull request #35 from netty/more-examples

Port over more Netty examples

Dockerfile

@@ -2,7 +2,7 @@
 FROM fedora:33
 RUN dnf -y install file findutils unzip zip libXtst-devel libXt-devel libXrender-devel libXrandr-devel \
            libXi-devel cups-devel fontconfig-devel alsa-lib-devel make autoconf diffutils git clang \
-           java-latest-openjdk-devel
+           java-latest-openjdk-devel automake libtool
 
 # Build panama-foreign openjdk
 WORKDIR /home/build
@@ -24,7 +24,7 @@ ENV PATH=/home/build/apache-maven-3.6.3/bin:$PATH
 # Prepare a snapshot of Netty 5
 RUN git clone -b master https://github.com/netty/netty.git netty
 WORKDIR /home/build/netty
-RUN mvn install -DskipTests -T1C -B -am -pl buffer,handler
+RUN mvn install -DskipTests -T1C -B -am
 WORKDIR /home/build
 
 # Prepare our own build

pom.xml

@@ -394,12 +394,25 @@
       <version>${netty.build.version}</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>io.netty</groupId>
+      <artifactId>netty-buffer</artifactId>
+      <version>${netty.version}</version>
+      <type>test-jar</type>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>io.netty</groupId>
       <artifactId>netty-handler</artifactId>
       <version>${netty.version}</version>
       <scope>test</scope>
     </dependency>
+    <dependency>
+      <groupId>io.netty</groupId>
+      <artifactId>netty-codec-http</artifactId>
+      <version>${netty.version}</version>
+      <scope>test</scope>
+    </dependency>
     <dependency>
       <groupId>org.openjdk.jmh</groupId>
       <artifactId>jmh-core</artifactId>

src/main/java/io/netty/buffer/api/CompositeBuffer.java

@@ -877,7 +877,7 @@ final class CompositeBuffer extends RcSupport<Buffer, CompositeBuffer> implement
 
     @Override
     public byte getByte(int roff) {
-        return prepRead(roff, Byte.BYTES).getByte(subOffset);
+        return prepGet(roff, Byte.BYTES).getByte(subOffset);
     }
 
     @Override
@@ -887,7 +887,7 @@ final class CompositeBuffer extends RcSupport<Buffer, CompositeBuffer> implement
 
     @Override
     public int getUnsignedByte(int roff) {
-        return prepRead(roff, Byte.BYTES).getUnsignedByte(subOffset);
+        return prepGet(roff, Byte.BYTES).getUnsignedByte(subOffset);
     }
 
     @Override
@@ -921,7 +921,7 @@ final class CompositeBuffer extends RcSupport<Buffer, CompositeBuffer> implement
 
     @Override
     public char getChar(int roff) {
-        return prepRead(roff, 2).getChar(subOffset);
+        return prepGet(roff, 2).getChar(subOffset);
     }
 
     @Override
@@ -943,7 +943,7 @@ final class CompositeBuffer extends RcSupport<Buffer, CompositeBuffer> implement
 
     @Override
     public short getShort(int roff) {
-        return prepRead(roff, Short.BYTES).getShort(subOffset);
+        return prepGet(roff, Short.BYTES).getShort(subOffset);
     }
 
     @Override
@@ -953,7 +953,7 @@ final class CompositeBuffer extends RcSupport<Buffer, CompositeBuffer> implement
 
     @Override
     public int getUnsignedShort(int roff) {
-        return prepRead(roff, Short.BYTES).getUnsignedShort(subOffset);
+        return prepGet(roff, Short.BYTES).getUnsignedShort(subOffset);
     }
 
     @Override
@@ -987,7 +987,7 @@ final class CompositeBuffer extends RcSupport<Buffer, CompositeBuffer> implement
 
     @Override
     public int getMedium(int roff) {
-        return prepRead(roff, 3).getMedium(subOffset);
+        return prepGet(roff, 3).getMedium(subOffset);
     }
 
     @Override
@@ -997,7 +997,7 @@ final class CompositeBuffer extends RcSupport<Buffer, CompositeBuffer> implement
 
     @Override
     public int getUnsignedMedium(int roff) {
-        return prepRead(roff, 3).getMedium(subOffset);
+        return prepGet(roff, 3).getMedium(subOffset);
     }
 
     @Override
@@ -1031,7 +1031,7 @@ final class CompositeBuffer extends RcSupport<Buffer, CompositeBuffer> implement
 
     @Override
     public int getInt(int roff) {
-        return prepRead(roff, Integer.BYTES).getInt(subOffset);
+        return prepGet(roff, Integer.BYTES).getInt(subOffset);
     }
 
     @Override
@@ -1041,7 +1041,7 @@ final class CompositeBuffer extends RcSupport<Buffer, CompositeBuffer> implement
 
     @Override
     public long getUnsignedInt(int roff) {
-        return prepRead(roff, Integer.BYTES).getUnsignedInt(subOffset);
+        return prepGet(roff, Integer.BYTES).getUnsignedInt(subOffset);
     }
 
     @Override
@@ -1075,7 +1075,7 @@ final class CompositeBuffer extends RcSupport<Buffer, CompositeBuffer> implement
 
     @Override
     public float getFloat(int roff) {
-        return prepRead(roff, Float.BYTES).getFloat(subOffset);
+        return prepGet(roff, Float.BYTES).getFloat(subOffset);
     }
 
     @Override
@@ -1097,7 +1097,7 @@ final class CompositeBuffer extends RcSupport<Buffer, CompositeBuffer> implement
 
     @Override
     public long getLong(int roff) {
-        return prepRead(roff, Long.BYTES).getLong(subOffset);
+        return prepGet(roff, Long.BYTES).getLong(subOffset);
     }
 
     @Override
@@ -1119,7 +1119,7 @@ final class CompositeBuffer extends RcSupport<Buffer, CompositeBuffer> implement
 
     @Override
     public double getDouble(int roff) {
-        return prepRead(roff, Double.BYTES).getDouble(subOffset);
+        return prepGet(roff, Double.BYTES).getDouble(subOffset);
     }
 
     @Override
@@ -1242,6 +1242,17 @@ final class CompositeBuffer extends RcSupport<Buffer, CompositeBuffer> implement
         }
     }
 
+    private BufferAccessors prepGet(int index, int size) {
+        checkGetBounds(index, size);
+        return chooseBuffer(index, size);
+    }
+
+    private void checkGetBounds(int index, int size) {
+        if (index < 0 || capacity < index + size) {
+            throw indexOutOfBounds(index, false);
+        }
+    }
+
     private BufferAccessors prepWrite(int size) {
         var buf = prepWrite(woff, size);
         woff += size;
@@ -1268,7 +1279,7 @@ final class CompositeBuffer extends RcSupport<Buffer, CompositeBuffer> implement
         }
         return new IndexOutOfBoundsException(
                 "Index " + index + " is out of bounds: [read 0 to " + woff + ", write 0 to " +
-                (capacity - 1) + "].");
+                capacity + "].");
     }
 
     private static IllegalStateException bufferIsClosed() {

src/main/java/io/netty/buffer/api/LifecycleTracer.java

@@ -83,11 +83,13 @@ abstract class LifecycleTracer {
         }
 
         void addTrace(Trace trace) {
+            synchronized (traces) {
                 if (traces.size() == MAX_TRACE_POINTS) {
                     traces.pollFirst();
                 }
                 traces.addLast(trace);
             }
+        }
 
         @Override
         void drop(int acquires) {
@@ -118,10 +120,12 @@ abstract class LifecycleTracer {
 
         @Override
         <E extends Throwable> E attachTrace(E throwable) {
+            synchronized (traces) {
                 long timestamp = System.nanoTime();
                 for (Trace trace : traces) {
                     trace.attach(throwable, timestamp);
                 }
+            }
             return throwable;
         }
     }

src/main/java/io/netty/buffer/api/adaptor/ByteBufAllocatorAdaptor.java

@@ -20,6 +20,8 @@ import io.netty.buffer.ByteBufAllocator;
 import io.netty.buffer.CompositeByteBuf;
 import io.netty.buffer.api.BufferAllocator;
 
+import static java.nio.ByteOrder.BIG_ENDIAN;
+
 public class ByteBufAllocatorAdaptor implements ByteBufAllocator, AutoCloseable {
     private final BufferAllocator onheap;
     private final BufferAllocator offheap;
@@ -53,7 +55,7 @@ public class ByteBufAllocatorAdaptor implements ByteBufAllocator, AutoCloseable
 
     @Override
     public ByteBuf buffer(int initialCapacity) {
-        return new ByteBufAdaptor(this, onheap.allocate(initialCapacity));
+        return new ByteBufAdaptor(this, onheap.allocate(initialCapacity).order(BIG_ENDIAN));
     }
 
     @Override
@@ -98,9 +100,7 @@ public class ByteBufAllocatorAdaptor implements ByteBufAllocator, AutoCloseable
 
     @Override
     public ByteBuf directBuffer(int initialCapacity) {
-        // TODO we cannot use off-heap buffers here, until the JDK allows direct byte buffers based on native
-        //  memory segments to be used in IO operations.
-        return new ByteBufAdaptor(this, onheap.allocate(initialCapacity));
+        return new ByteBufAdaptor(this, offheap.allocate(initialCapacity).order(BIG_ENDIAN));
     }
 
     @Override

src/main/java/io/netty/buffer/api/memseg/MemSegBuffer.java

@@ -133,7 +133,7 @@ class MemSegBuffer extends RcSupport<Buffer, MemSegBuffer> implements Buffer, Re
 
     @Override
     public Buffer fill(byte value) {
-        checkWrite(0, capacity());
+        checkSet(0, capacity());
         seg.fill(value);
         return this;
     }
@@ -281,7 +281,7 @@ class MemSegBuffer extends RcSupport<Buffer, MemSegBuffer> implements Buffer, Re
     public void copyInto(int srcPos, Buffer dest, int destPos, int length) {
         if (dest instanceof MemSegBuffer) {
             var memSegBuf = (MemSegBuffer) dest;
-            memSegBuf.checkWrite(destPos, length);
+            memSegBuf.checkSet(destPos, length);
             copyInto(srcPos, memSegBuf.seg, destPos, length);
             return;
         }
@@ -589,7 +589,7 @@ class MemSegBuffer extends RcSupport<Buffer, MemSegBuffer> implements Buffer, Re
 
     @Override
     public byte getByte(int roff) {
-        checkRead(roff, Byte.BYTES);
+        checkGet(roff, Byte.BYTES);
         return getByteAtOffset(seg, roff);
     }
 
@@ -603,7 +603,7 @@ class MemSegBuffer extends RcSupport<Buffer, MemSegBuffer> implements Buffer, Re
 
     @Override
     public int getUnsignedByte(int roff) {
-        checkRead(roff, Byte.BYTES);
+        checkGet(roff, Byte.BYTES);
         return getByteAtOffset(seg, roff) & 0xFF;
     }
 
@@ -659,7 +659,7 @@ class MemSegBuffer extends RcSupport<Buffer, MemSegBuffer> implements Buffer, Re
 
     @Override
     public char getChar(int roff) {
-        checkRead(roff, 2);
+        checkGet(roff, 2);
         return getCharAtOffset(seg, roff, order);
     }
 
@@ -694,7 +694,7 @@ class MemSegBuffer extends RcSupport<Buffer, MemSegBuffer> implements Buffer, Re
 
     @Override
     public short getShort(int roff) {
-        checkRead(roff, Short.BYTES);
+        checkGet(roff, Short.BYTES);
         return getShortAtOffset(seg, roff, order);
     }
 
@@ -708,7 +708,7 @@ class MemSegBuffer extends RcSupport<Buffer, MemSegBuffer> implements Buffer, Re
 
     @Override
     public int getUnsignedShort(int roff) {
-        checkRead(roff, Short.BYTES);
+        checkGet(roff, Short.BYTES);
         return getShortAtOffset(seg, roff, order) & 0xFFFF;
     }
 
@@ -770,7 +770,7 @@ class MemSegBuffer extends RcSupport<Buffer, MemSegBuffer> implements Buffer, Re
 
     @Override
     public int getMedium(int roff) {
-        checkRead(roff, 3);
+        checkGet(roff, 3);
         return order == ByteOrder.BIG_ENDIAN?
                 getByteAtOffset(seg, roff) << 16 |
                 (getByteAtOffset(seg, roff + 1) & 0xFF) << 8 |
@@ -796,7 +796,7 @@ class MemSegBuffer extends RcSupport<Buffer, MemSegBuffer> implements Buffer, Re
 
     @Override
     public int getUnsignedMedium(int roff) {
-        checkRead(roff, 3);
+        checkGet(roff, 3);
         return order == ByteOrder.BIG_ENDIAN?
                 (getByteAtOffset(seg, roff) << 16 |
                 (getByteAtOffset(seg, roff + 1) & 0xFF) << 8 |
@@ -824,7 +824,7 @@ class MemSegBuffer extends RcSupport<Buffer, MemSegBuffer> implements Buffer, Re
 
     @Override
     public Buffer setMedium(int woff, int value) {
-        checkWrite(woff, 3);
+        checkSet(woff, 3);
         if (order == ByteOrder.BIG_ENDIAN) {
             setByteAtOffset(wseg, woff, (byte) (value >> 16));
             setByteAtOffset(wseg, woff + 1, (byte) (value >> 8 & 0xFF));
@@ -855,7 +855,7 @@ class MemSegBuffer extends RcSupport<Buffer, MemSegBuffer> implements Buffer, Re
 
     @Override
     public Buffer setUnsignedMedium(int woff, int value) {
-        checkWrite(woff, 3);
+        checkSet(woff, 3);
         if (order == ByteOrder.BIG_ENDIAN) {
             setByteAtOffset(wseg, woff, (byte) (value >> 16));
             setByteAtOffset(wseg, woff + 1, (byte) (value >> 8 & 0xFF));
@@ -878,7 +878,7 @@ class MemSegBuffer extends RcSupport<Buffer, MemSegBuffer> implements Buffer, Re
 
     @Override
     public int getInt(int roff) {
-        checkRead(roff, Integer.BYTES);
+        checkGet(roff, Integer.BYTES);
         return getIntAtOffset(seg, roff, order);
     }
 
@@ -892,7 +892,7 @@ class MemSegBuffer extends RcSupport<Buffer, MemSegBuffer> implements Buffer, Re
 
     @Override
     public long getUnsignedInt(int roff) {
-        checkRead(roff, Integer.BYTES);
+        checkGet(roff, Integer.BYTES);
         return getIntAtOffset(seg, roff, order) & 0xFFFFFFFFL;
     }
 
@@ -948,7 +948,7 @@ class MemSegBuffer extends RcSupport<Buffer, MemSegBuffer> implements Buffer, Re
 
     @Override
     public float getFloat(int roff) {
-        checkRead(roff, Float.BYTES);
+        checkGet(roff, Float.BYTES);
         return getFloatAtOffset(seg, roff, order);
     }
 
@@ -983,7 +983,7 @@ class MemSegBuffer extends RcSupport<Buffer, MemSegBuffer> implements Buffer, Re
 
     @Override
     public long getLong(int roff) {
-        checkRead(roff, Long.BYTES);
+        checkGet(roff, Long.BYTES);
         return getLongAtOffset(seg, roff, order);
     }
 
@@ -1018,7 +1018,7 @@ class MemSegBuffer extends RcSupport<Buffer, MemSegBuffer> implements Buffer, Re
 
     @Override
     public double getDouble(int roff) {
-        checkRead(roff, Double.BYTES);
+        checkGet(roff, Double.BYTES);
         return getDoubleAtOffset(seg, roff, order);
     }
 
@@ -1093,7 +1093,19 @@ class MemSegBuffer extends RcSupport<Buffer, MemSegBuffer> implements Buffer, Re
         }
     }
 
+    private void checkGet(int index, int size) {
+        if (index < 0 || seg.byteSize() < index + size) {
+            throw readAccessCheckException(index);
+        }
+    }
+
     private void checkWrite(int index, int size) {
+        if (index < roff || wseg.byteSize() < index + size) {
+            throw writeAccessCheckException(index);
+        }
+    }
+
+    private void checkSet(int index, int size) {
         if (index < 0 || wseg.byteSize() < index + size) {
             throw writeAccessCheckException(index);
         }
@@ -1137,7 +1149,7 @@ class MemSegBuffer extends RcSupport<Buffer, MemSegBuffer> implements Buffer, Re
     private IndexOutOfBoundsException outOfBounds(int index) {
         return new IndexOutOfBoundsException(
                 "Index " + index + " is out of bounds: [read 0 to " + woff + ", write 0 to " +
-                (seg.byteSize() - 1) + "].");
+                seg.byteSize() + "].");
     }
 
     Object recoverableMemory() {

src/test/java/io/netty/buffer/api/Memoize.java

@@ -0,0 +1,36 @@
+/*
+ * Copyright 2021 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package io.netty.buffer.api;
+
+import java.util.function.Supplier;
+
+final class Memoize<T> implements Supplier<T> {
+    private final Supplier<T> supplier;
+    private volatile T memo;
+
+    Memoize(Supplier<T> supplier) {
+        this.supplier = supplier;
+    }
+
+    @Override
+    public T get() {
+        T val = memo;
+        if (val == null) {
+            memo = val = supplier.get();
+        }
+        return val;
+    }
+}

src/test/java/io/netty/buffer/api/adaptor/ByteBufAdaptorTest.java

@@ -0,0 +1,263 @@
+/*
+ * Copyright 2021 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package io.netty.buffer.api.adaptor;
+
+import io.netty.buffer.AbstractByteBufTest;
+import io.netty.buffer.ByteBuf;
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Ignore;
+
+public class ByteBufAdaptorTest extends AbstractByteBufTest {
+    static ByteBufAllocatorAdaptor alloc;
+
+    @BeforeClass
+    public static void setUpAllocator() {
+        alloc = new ByteBufAllocatorAdaptor();
+    }
+
+    @AfterClass
+    public static void tearDownAllocator() throws Exception {
+        alloc.close();
+    }
+
+    @Override
+    protected ByteBuf newBuffer(int capacity, int maxCapacity) {
+        return alloc.buffer(capacity, capacity);
+    }
+
+    @Ignore("New buffers not thread-safe like this.")
+    @Override
+    public void testSliceReadGatheringByteChannelMultipleThreads() throws Exception {
+    }
+
+    @Ignore("New buffers not thread-safe like this.")
+    @Override
+    public void testDuplicateReadGatheringByteChannelMultipleThreads() throws Exception {
+    }
+
+    @Ignore("New buffers not thread-safe like this.")
+    @Override
+    public void testSliceReadOutputStreamMultipleThreads() throws Exception {
+    }
+
+    @Ignore("New buffers not thread-safe like this.")
+    @Override
+    public void testDuplicateReadOutputStreamMultipleThreads() throws Exception {
+    }
+
+    @Ignore("New buffers not thread-safe like this.")
+    @Override
+    public void testSliceBytesInArrayMultipleThreads() throws Exception {
+    }
+
+    @Ignore("New buffers not thread-safe like this.")
+    @Override
+    public void testDuplicateBytesInArrayMultipleThreads() throws Exception {
+    }
+
+    @Ignore("This test codifies that asking to reading 0 bytes from an empty but unclosed stream should return -1, " +
+            "which is just weird.")
+    @Override
+    public void testStreamTransfer1() throws Exception {
+    }
+
+    @Ignore("Relies on capacity and max capacity being separate things.")
+    @Override
+    public void testCapacityIncrease() {
+    }
+
+    @Ignore("Decreasing capacity not supported in new API.")
+    @Override
+    public void testCapacityDecrease() {
+    }
+
+    @Ignore("Decreasing capacity not supported in new API.")
+    @Override
+    public void testCapacityNegative() {
+        throw new IllegalArgumentException(); // Can't ignore tests annotated with throws expectation?
+    }
+
+    @Ignore("Decreasing capacity not supported in new API.")
+    @Override
+    public void testCapacityEnforceMaxCapacity() {
+        throw new IllegalArgumentException(); // Can't ignore tests annotated with throws expectation?
+    }
+
+    @Ignore("Decreasing capacity not supported in new API.")
+    @Override
+    public void testMaxFastWritableBytes() {
+    }
+
+    @Ignore("Impossible to expose entire memory as a ByteBuffer using new API.")
+    @Override
+    public void testNioBufferExposeOnlyRegion() {
+    }
+
+    @Ignore("Impossible to expose entire memory as a ByteBuffer using new API.")
+    @Override
+    public void testToByteBuffer2() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testRetainedDuplicateUnreleasable3() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testRetainedDuplicateUnreleasable4() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testRetainedDuplicateAndRetainedSliceContentIsExpected() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testMultipleRetainedSliceReleaseOriginal2() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testMultipleRetainedSliceReleaseOriginal3() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testMultipleRetainedSliceReleaseOriginal4() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testReadRetainedSliceUnreleasable3() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testReadRetainedSliceUnreleasable4() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testRetainedSliceUnreleasable3() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testRetainedSliceUnreleasable4() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testRetainedSliceReleaseOriginal2() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testRetainedSliceReleaseOriginal3() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testRetainedSliceReleaseOriginal4() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testMultipleRetainedDuplicateReleaseOriginal2() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testMultipleRetainedDuplicateReleaseOriginal3() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testMultipleRetainedDuplicateReleaseOriginal4() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testRetainedDuplicateReleaseOriginal2() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testRetainedDuplicateReleaseOriginal3() {
+    }
+
+    @Ignore("This assumes a single reference count for the memory, but all buffers (views of memory) have " +
+            "independent reference counts now. Also, this plays tricks with reference that we cannot support.")
+    @Override
+    public void testRetainedDuplicateReleaseOriginal4() {
+    }
+
+    @Ignore("No longer allowed to allocate 0 sized buffers, except for composite buffers with no components.")
+    @Override
+    public void testLittleEndianWithExpand() {
+    }
+
+    @Ignore("Test seems to inherently have double-free bug?")
+    @Override
+    public void testRetainedSliceAfterReleaseRetainedSliceDuplicate() {
+    }
+
+    @Ignore("Test seems to inherently have double-free bug?")
+    @Override
+    public void testRetainedSliceAfterReleaseRetainedDuplicateSlice() {
+    }
+
+    @Ignore("Test seems to inherently have double-free bug?")
+    @Override
+    public void testSliceAfterReleaseRetainedSliceDuplicate() {
+    }
+
+    @Ignore("Test seems to inherently have double-free bug?")
+    @Override
+    public void testDuplicateAfterReleaseRetainedSliceDuplicate() {
+    }
+
+    @Ignore("Test seems to inherently have double-free bug?")
+    @Override
+    public void testDuplicateAfterReleaseRetainedDuplicateSlice() {
+    }
+
+    @Ignore("Test seems to inherently have double-free bug?")
+    @Override
+    public void testSliceAfterReleaseRetainedDuplicateSlice() {
+    }
+}

src/test/java/io/netty/buffer/api/examples/http/snoop/HttpSnoopClient.java

@@ -0,0 +1,114 @@
+/*
+ * Copyright 2021 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package io.netty.buffer.api.examples.http.snoop;
+
+import io.netty.bootstrap.Bootstrap;
+import io.netty.buffer.Unpooled;
+import io.netty.buffer.api.adaptor.ByteBufAllocatorAdaptor;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelOption;
+import io.netty.channel.EventLoopGroup;
+import io.netty.channel.MultithreadEventLoopGroup;
+import io.netty.channel.nio.NioHandler;
+import io.netty.channel.socket.nio.NioSocketChannel;
+import io.netty.handler.codec.http.DefaultFullHttpRequest;
+import io.netty.handler.codec.http.HttpHeaderNames;
+import io.netty.handler.codec.http.HttpHeaderValues;
+import io.netty.handler.codec.http.HttpMethod;
+import io.netty.handler.codec.http.HttpRequest;
+import io.netty.handler.codec.http.HttpVersion;
+import io.netty.handler.codec.http.cookie.ClientCookieEncoder;
+import io.netty.handler.codec.http.cookie.DefaultCookie;
+import io.netty.handler.ssl.SslContext;
+import io.netty.handler.ssl.SslContextBuilder;
+import io.netty.handler.ssl.util.InsecureTrustManagerFactory;
+
+import java.net.URI;
+
+/**
+ * A simple HTTP client that prints out the content of the HTTP response to
+ * {@link System#out} to test {@link HttpSnoopServer}.
+ */
+public final class HttpSnoopClient {
+
+    static final String URL = System.getProperty("url", "http://127.0.0.1:8080/");
+
+    public static void main(String[] args) throws Exception {
+        URI uri = new URI(URL);
+        String scheme = uri.getScheme() == null? "http" : uri.getScheme();
+        String host = uri.getHost() == null? "127.0.0.1" : uri.getHost();
+        int port = uri.getPort();
+        if (port == -1) {
+            if ("http".equalsIgnoreCase(scheme)) {
+                port = 80;
+            } else if ("https".equalsIgnoreCase(scheme)) {
+                port = 443;
+            }
+        }
+
+        if (!"http".equalsIgnoreCase(scheme) && !"https".equalsIgnoreCase(scheme)) {
+            System.err.println("Only HTTP(S) is supported.");
+            return;
+        }
+
+        // Configure SSL context if necessary.
+        final boolean ssl = "https".equalsIgnoreCase(scheme);
+        final SslContext sslCtx;
+        if (ssl) {
+            sslCtx = SslContextBuilder.forClient()
+                .trustManager(InsecureTrustManagerFactory.INSTANCE).build();
+        } else {
+            sslCtx = null;
+        }
+
+        // Configure the client.
+        ByteBufAllocatorAdaptor allocator = new ByteBufAllocatorAdaptor();
+        EventLoopGroup group = new MultithreadEventLoopGroup(NioHandler.newFactory());
+        try {
+            Bootstrap b = new Bootstrap();
+            b.group(group)
+             .option(ChannelOption.ALLOCATOR, allocator)
+             .channel(NioSocketChannel.class)
+             .handler(new HttpSnoopClientInitializer(sslCtx, allocator));
+
+            // Make the connection attempt.
+            Channel ch = b.connect(host, port).sync().channel();
+
+            // Prepare the HTTP request.
+            HttpRequest request = new DefaultFullHttpRequest(
+                    HttpVersion.HTTP_1_1, HttpMethod.GET, uri.getRawPath(), Unpooled.EMPTY_BUFFER);
+            request.headers().set(HttpHeaderNames.HOST, host);
+            request.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE);
+            request.headers().set(HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.GZIP);
+
+            // Set some example cookies.
+            request.headers().set(
+                    HttpHeaderNames.COOKIE,
+                    ClientCookieEncoder.STRICT.encode(
+                            new DefaultCookie("my-cookie", "foo"),
+                            new DefaultCookie("another-cookie", "bar")));
+
+            // Send the HTTP request.
+            ch.writeAndFlush(request);
+
+            // Wait for the server to close the connection.
+            ch.closeFuture().sync();
+        } finally {
+            // Shut down executor threads to exit.
+            group.shutdownGracefully();
+        }
+    }
+}

src/test/java/io/netty/buffer/api/examples/http/snoop/HttpSnoopClientHandler.java

@@ -0,0 +1,71 @@
+/*
+ * Copyright 2021 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package io.netty.buffer.api.examples.http.snoop;
+
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.SimpleChannelInboundHandler;
+import io.netty.handler.codec.http.HttpContent;
+import io.netty.handler.codec.http.HttpObject;
+import io.netty.handler.codec.http.HttpResponse;
+import io.netty.handler.codec.http.HttpUtil;
+import io.netty.handler.codec.http.LastHttpContent;
+import io.netty.util.CharsetUtil;
+
+public class HttpSnoopClientHandler extends SimpleChannelInboundHandler<HttpObject> {
+
+    @Override
+    public void messageReceived(ChannelHandlerContext ctx, HttpObject msg) {
+        if (msg instanceof HttpResponse) {
+            HttpResponse response = (HttpResponse) msg;
+
+            System.err.println("STATUS: " + response.status());
+            System.err.println("VERSION: " + response.protocolVersion());
+            System.err.println();
+
+            if (!response.headers().isEmpty()) {
+                for (CharSequence name: response.headers().names()) {
+                    for (CharSequence value: response.headers().getAll(name)) {
+                        System.err.println("HEADER: " + name + " = " + value);
+                    }
+                }
+                System.err.println();
+            }
+
+            if (HttpUtil.isTransferEncodingChunked(response)) {
+                System.err.println("CHUNKED CONTENT {");
+            } else {
+                System.err.println("CONTENT {");
+            }
+        }
+        if (msg instanceof HttpContent) {
+            HttpContent content = (HttpContent) msg;
+
+            System.err.print(content.content().toString(CharsetUtil.UTF_8));
+            System.err.flush();
+
+            if (content instanceof LastHttpContent) {
+                System.err.println("} END OF CONTENT");
+                ctx.close();
+            }
+        }
+    }
+
+    @Override
+    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
+        cause.printStackTrace();
+        ctx.close();
+    }
+}

src/test/java/io/netty/buffer/api/examples/http/snoop/HttpSnoopClientInitializer.java

@@ -0,0 +1,57 @@
+/*
+ * Copyright 2021 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package io.netty.buffer.api.examples.http.snoop;
+
+import io.netty.buffer.ByteBufAllocator;
+import io.netty.channel.ChannelInitializer;
+import io.netty.channel.ChannelPipeline;
+import io.netty.channel.socket.SocketChannel;
+import io.netty.handler.codec.http.HttpClientCodec;
+import io.netty.handler.codec.http.HttpContentDecompressor;
+import io.netty.handler.ssl.SslContext;
+
+public class HttpSnoopClientInitializer extends ChannelInitializer<SocketChannel> {
+
+    private final SslContext sslCtx;
+    private final ByteBufAllocator allocator;
+
+    public HttpSnoopClientInitializer(SslContext sslCtx, ByteBufAllocator allocator) {
+        this.sslCtx = sslCtx;
+        this.allocator = allocator;
+    }
+
+    @Override
+    public void initChannel(SocketChannel ch) {
+        ChannelPipeline p = ch.pipeline();
+
+        // Enable HTTPS if necessary.
+        if (sslCtx != null) {
+            // `initChannel` runs before the channel options have been applied, so we need to configure
+            // the handler with an allocator that we get passed via the constructor.
+            p.addLast(sslCtx.newHandler(allocator));
+        }
+
+        p.addLast(new HttpClientCodec());
+
+        // Remove the following line if you don't want automatic content decompression.
+        p.addLast(new HttpContentDecompressor());
+
+        // Uncomment the following line if you don't want to handle HttpContents.
+        //p.addLast(new HttpObjectAggregator(1048576));
+
+        p.addLast(new HttpSnoopClientHandler());
+    }
+}

src/test/java/io/netty/buffer/api/examples/http/snoop/HttpSnoopServer.java

@@ -0,0 +1,74 @@
+/*
+ * Copyright 2021 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package io.netty.buffer.api.examples.http.snoop;
+
+import io.netty.bootstrap.ServerBootstrap;
+import io.netty.buffer.api.adaptor.ByteBufAllocatorAdaptor;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelOption;
+import io.netty.channel.EventLoopGroup;
+import io.netty.channel.MultithreadEventLoopGroup;
+import io.netty.channel.nio.NioHandler;
+import io.netty.channel.socket.nio.NioServerSocketChannel;
+import io.netty.handler.logging.LogLevel;
+import io.netty.handler.logging.LoggingHandler;
+import io.netty.handler.ssl.SslContext;
+import io.netty.handler.ssl.SslContextBuilder;
+import io.netty.handler.ssl.util.SelfSignedCertificate;
+
+/**
+ * An HTTP server that sends back the content of the received HTTP request
+ * in a pretty plaintext form.
+ */
+public final class HttpSnoopServer {
+
+    static final boolean SSL = System.getProperty("ssl") != null;
+    static final int PORT = Integer.parseInt(System.getProperty("port", SSL? "8443" : "8080"));
+
+    public static void main(String[] args) throws Exception {
+        // Configure SSL.
+        final SslContext sslCtx;
+        if (SSL) {
+            SelfSignedCertificate ssc = new SelfSignedCertificate();
+            sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey()).build();
+        } else {
+            sslCtx = null;
+        }
+
+        // Configure the server.
+        ByteBufAllocatorAdaptor allocator = new ByteBufAllocatorAdaptor();
+        EventLoopGroup bossGroup = new MultithreadEventLoopGroup(1, NioHandler.newFactory());
+        EventLoopGroup workerGroup = new MultithreadEventLoopGroup(NioHandler.newFactory());
+        try {
+            ServerBootstrap b = new ServerBootstrap();
+            b.group(bossGroup, workerGroup)
+             .channel(NioServerSocketChannel.class)
+             .childOption(ChannelOption.ALLOCATOR, allocator)
+             .handler(new LoggingHandler(LogLevel.INFO))
+             .childHandler(new HttpSnoopServerInitializer(sslCtx, allocator));
+
+            Channel ch = b.bind(PORT).sync().channel();
+
+            System.err.println("Open your web browser and navigate to " +
+                    (SSL? "https" : "http") + "://127.0.0.1:" + PORT + '/');
+
+            ch.closeFuture().sync();
+        } finally {
+            bossGroup.shutdownGracefully();
+            workerGroup.shutdownGracefully();
+        }
+    }
+}

src/test/java/io/netty/buffer/api/examples/http/snoop/HttpSnoopServerHandler.java

@@ -0,0 +1,199 @@
+/*
+ * Copyright 2021 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package io.netty.buffer.api.examples.http.snoop;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.buffer.Unpooled;
+import io.netty.channel.ChannelFutureListener;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.SimpleChannelInboundHandler;
+import io.netty.handler.codec.DecoderResult;
+import io.netty.handler.codec.http.DefaultFullHttpResponse;
+import io.netty.handler.codec.http.FullHttpResponse;
+import io.netty.handler.codec.http.HttpContent;
+import io.netty.handler.codec.http.HttpHeaderNames;
+import io.netty.handler.codec.http.HttpHeaderValues;
+import io.netty.handler.codec.http.HttpHeaders;
+import io.netty.handler.codec.http.HttpObject;
+import io.netty.handler.codec.http.HttpRequest;
+import io.netty.handler.codec.http.HttpUtil;
+import io.netty.handler.codec.http.LastHttpContent;
+import io.netty.handler.codec.http.QueryStringDecoder;
+import io.netty.handler.codec.http.cookie.Cookie;
+import io.netty.handler.codec.http.cookie.ServerCookieDecoder;
+import io.netty.handler.codec.http.cookie.ServerCookieEncoder;
+import io.netty.util.CharsetUtil;
+
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Set;
+
+import static io.netty.handler.codec.http.HttpResponseStatus.BAD_REQUEST;
+import static io.netty.handler.codec.http.HttpResponseStatus.CONTINUE;
+import static io.netty.handler.codec.http.HttpResponseStatus.OK;
+import static io.netty.handler.codec.http.HttpVersion.HTTP_1_1;
+
+public class HttpSnoopServerHandler extends SimpleChannelInboundHandler<Object> {
+
+    private HttpRequest request;
+    /** Buffer that stores the response content */
+    private final StringBuilder buf = new StringBuilder();
+
+    @Override
+    public void channelReadComplete(ChannelHandlerContext ctx) {
+        ctx.flush();
+    }
+
+    @Override
+    protected void messageReceived(ChannelHandlerContext ctx, Object msg) {
+        if (msg instanceof HttpRequest) {
+            HttpRequest request = this.request = (HttpRequest) msg;
+
+            if (HttpUtil.is100ContinueExpected(request)) {
+                send100Continue(ctx);
+            }
+
+            buf.setLength(0);
+            buf.append("WELCOME TO THE WILD WILD WEB SERVER\r\n");
+            buf.append("===================================\r\n");
+
+            buf.append("VERSION: ").append(request.protocolVersion()).append("\r\n");
+            buf.append("HOSTNAME: ").append(request.headers().get(HttpHeaderNames.HOST, "unknown")).append("\r\n");
+            buf.append("REQUEST_URI: ").append(request.uri()).append("\r\n\r\n");
+
+            HttpHeaders headers = request.headers();
+            if (!headers.isEmpty()) {
+                for (Entry<String, String> h: headers) {
+                    CharSequence key = h.getKey();
+                    CharSequence value = h.getValue();
+                    buf.append("HEADER: ").append(key).append(" = ").append(value).append("\r\n");
+                }
+                buf.append("\r\n");
+            }
+
+            QueryStringDecoder queryStringDecoder = new QueryStringDecoder(request.uri());
+            Map<String, List<String>> params = queryStringDecoder.parameters();
+            if (!params.isEmpty()) {
+                for (Entry<String, List<String>> p: params.entrySet()) {
+                    String key = p.getKey();
+                    List<String> vals = p.getValue();
+                    for (String val : vals) {
+                        buf.append("PARAM: ").append(key).append(" = ").append(val).append("\r\n");
+                    }
+                }
+                buf.append("\r\n");
+            }
+
+            appendDecoderResult(buf, request);
+        }
+
+        if (msg instanceof HttpContent) {
+            HttpContent httpContent = (HttpContent) msg;
+
+            ByteBuf content = httpContent.content();
+            if (content.isReadable()) {
+                buf.append("CONTENT: ");
+                buf.append(content.toString(CharsetUtil.UTF_8));
+                buf.append("\r\n");
+                appendDecoderResult(buf, request);
+            }
+
+            if (msg instanceof LastHttpContent) {
+                buf.append("END OF CONTENT\r\n");
+
+                LastHttpContent trailer = (LastHttpContent) msg;
+                if (!trailer.trailingHeaders().isEmpty()) {
+                    buf.append("\r\n");
+                    for (CharSequence name: trailer.trailingHeaders().names()) {
+                        for (CharSequence value: trailer.trailingHeaders().getAll(name)) {
+                            buf.append("TRAILING HEADER: ");
+                            buf.append(name).append(" = ").append(value).append("\r\n");
+                        }
+                    }
+                    buf.append("\r\n");
+                }
+
+                if (!writeResponse(trailer, ctx)) {
+                    // If keep-alive is off, close the connection once the content is fully written.
+                    ctx.writeAndFlush(Unpooled.EMPTY_BUFFER).addListener(ChannelFutureListener.CLOSE);
+                }
+            }
+        }
+    }
+
+    private static void appendDecoderResult(StringBuilder buf, HttpObject o) {
+        DecoderResult result = o.decoderResult();
+        if (result.isSuccess()) {
+            return;
+        }
+
+        buf.append(".. WITH DECODER FAILURE: ");
+        buf.append(result.cause());
+        buf.append("\r\n");
+    }
+
+    private boolean writeResponse(HttpObject currentObj, ChannelHandlerContext ctx) {
+        // Decide whether to close the connection or not.
+        boolean keepAlive = HttpUtil.isKeepAlive(request);
+        // Build the response object.
+        FullHttpResponse response = new DefaultFullHttpResponse(
+                HTTP_1_1, currentObj.decoderResult().isSuccess()? OK : BAD_REQUEST,
+                Unpooled.copiedBuffer(buf.toString(), CharsetUtil.UTF_8));
+
+        response.headers().set(HttpHeaderNames.CONTENT_TYPE, "text/plain; charset=UTF-8");
+
+        if (keepAlive) {
+            // Add 'Content-Length' header only for a keep-alive connection.
+            response.headers().setInt(HttpHeaderNames.CONTENT_LENGTH, response.content().readableBytes());
+            // Add keep alive header as per:
+            // - https://www.w3.org/Protocols/HTTP/1.1/draft-ietf-http-v11-spec-01.html#Connection
+            response.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE);
+        }
+
+        // Encode the cookie.
+        String cookieString = request.headers().get(HttpHeaderNames.COOKIE);
+        if (cookieString != null) {
+            Set<Cookie> cookies = ServerCookieDecoder.STRICT.decode(cookieString);
+            if (!cookies.isEmpty()) {
+                // Reset the cookies if necessary.
+                for (Cookie cookie: cookies) {
+                    response.headers().add(HttpHeaderNames.SET_COOKIE, ServerCookieEncoder.STRICT.encode(cookie));
+                }
+            }
+        } else {
+            // Browser sent no cookie.  Add some.
+            response.headers().add(HttpHeaderNames.SET_COOKIE, ServerCookieEncoder.STRICT.encode("key1", "value1"));
+            response.headers().add(HttpHeaderNames.SET_COOKIE, ServerCookieEncoder.STRICT.encode("key2", "value2"));
+        }
+
+        // Write the response.
+        ctx.write(response);
+
+        return keepAlive;
+    }
+
+    private static void send100Continue(ChannelHandlerContext ctx) {
+        FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, CONTINUE, Unpooled.EMPTY_BUFFER);
+        ctx.write(response);
+    }
+
+    @Override
+    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
+        cause.printStackTrace();
+        ctx.close();
+    }
+}

src/test/java/io/netty/buffer/api/examples/http/snoop/HttpSnoopServerInitializer.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright 2021 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package io.netty.buffer.api.examples.http.snoop;
+
+import io.netty.buffer.ByteBufAllocator;
+import io.netty.channel.ChannelInitializer;
+import io.netty.channel.ChannelPipeline;
+import io.netty.channel.socket.SocketChannel;
+import io.netty.handler.codec.http.HttpRequestDecoder;
+import io.netty.handler.codec.http.HttpResponseEncoder;
+import io.netty.handler.ssl.SslContext;
+
+public class HttpSnoopServerInitializer extends ChannelInitializer<SocketChannel> {
+
+    private final SslContext sslCtx;
+    private final ByteBufAllocator allocator;
+
+    public HttpSnoopServerInitializer(SslContext sslCtx, ByteBufAllocator allocator) {
+        this.sslCtx = sslCtx;
+        this.allocator = allocator;
+    }
+
+    @Override
+    public void initChannel(SocketChannel ch) {
+        ChannelPipeline p = ch.pipeline();
+        ch.alloc();
+        if (sslCtx != null) {
+            p.addLast(sslCtx.newHandler(allocator));
+        }
+        p.addLast(new HttpRequestDecoder());
+        // Uncomment the following line if you don't want to handle HttpChunks.
+        //p.addLast(new HttpObjectAggregator(1048576));
+        p.addLast(new HttpResponseEncoder());
+        // Remove the following line if you don't want automatic content compression.
+        //p.addLast(new HttpContentCompressor());
+        p.addLast(new HttpSnoopServerHandler());
+    }
+}

src/test/java/io/netty/buffer/api/examples/http/upload/HttpUploadClient.java

@@ -0,0 +1,904 @@
+/*
+ * Copyright 2021 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package io.netty.buffer.api.examples.http.upload;
+
+import io.netty.bootstrap.Bootstrap;
+import io.netty.buffer.api.adaptor.ByteBufAllocatorAdaptor;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelOption;
+import io.netty.channel.EventLoopGroup;
+import io.netty.channel.MultithreadEventLoopGroup;
+import io.netty.channel.nio.NioHandler;
+import io.netty.channel.socket.nio.NioSocketChannel;
+import io.netty.handler.codec.http.DefaultHttpRequest;
+import io.netty.handler.codec.http.HttpHeaderNames;
+import io.netty.handler.codec.http.HttpHeaderValues;
+import io.netty.handler.codec.http.HttpHeaders;
+import io.netty.handler.codec.http.HttpMethod;
+import io.netty.handler.codec.http.HttpRequest;
+import io.netty.handler.codec.http.HttpVersion;
+import io.netty.handler.codec.http.QueryStringEncoder;
+import io.netty.handler.codec.http.cookie.ClientCookieEncoder;
+import io.netty.handler.codec.http.cookie.DefaultCookie;
+import io.netty.handler.codec.http.multipart.DefaultHttpDataFactory;
+import io.netty.handler.codec.http.multipart.DiskAttribute;
+import io.netty.handler.codec.http.multipart.DiskFileUpload;
+import io.netty.handler.codec.http.multipart.HttpDataFactory;
+import io.netty.handler.codec.http.multipart.HttpPostRequestEncoder;
+import io.netty.handler.codec.http.multipart.InterfaceHttpData;
+import io.netty.handler.ssl.SslContext;
+import io.netty.handler.ssl.SslContextBuilder;
+import io.netty.handler.ssl.util.InsecureTrustManagerFactory;
+import io.netty.util.internal.SocketUtils;
+
+import java.io.File;
+import java.io.FileNotFoundException;
+import java.net.URI;
+import java.util.List;
+import java.util.Map.Entry;
+
+/**
+ * This class is meant to be run against {@link HttpUploadServer}.
+ */
+public final class HttpUploadClient {
+
+    static final String BASE_URL = System.getProperty("baseUrl", "http://127.0.0.1:8080/");
+    static final String FILE = System.getProperty("file", "README.adoc");
+
+    public static void main(String[] args) throws Exception {
+        String postSimple, postFile, get;
+        if (BASE_URL.endsWith("/")) {
+            postSimple = BASE_URL + "formpost";
+            postFile = BASE_URL + "formpostmultipart";
+            get = BASE_URL + "formget";
+        } else {
+            postSimple = BASE_URL + "/formpost";
+            postFile = BASE_URL + "/formpostmultipart";
+            get = BASE_URL + "/formget";
+        }
+
+        URI uriSimple = new URI(postSimple);
+        String scheme = uriSimple.getScheme() == null? "http" : uriSimple.getScheme();
+        String host = uriSimple.getHost() == null? "127.0.0.1" : uriSimple.getHost();
+        int port = uriSimple.getPort();
+        if (port == -1) {
+            if ("http".equalsIgnoreCase(scheme)) {
+                port = 80;
+            } else if ("https".equalsIgnoreCase(scheme)) {
+                port = 443;
+            }
+        }
+
+        if (!"http".equalsIgnoreCase(scheme) && !"https".equalsIgnoreCase(scheme)) {
+            System.err.println("Only HTTP(S) is supported.");
+            return;
+        }
+
+        final boolean ssl = "https".equalsIgnoreCase(scheme);
+        final SslContext sslCtx;
+        if (ssl) {
+            sslCtx = SslContextBuilder.forClient()
+                .trustManager(InsecureTrustManagerFactory.INSTANCE).build();
+        } else {
+            sslCtx = null;
+        }
+
+        URI uriFile = new URI(postFile);
+        File file = new File(FILE);
+        if (!file.canRead()) {
+            throw new FileNotFoundException(FILE);
+        }
+
+        // Configure the client.
+        ByteBufAllocatorAdaptor allocator = new ByteBufAllocatorAdaptor();
+        EventLoopGroup group = new MultithreadEventLoopGroup(NioHandler.newFactory());
+
+        // setup the factory: here using a mixed memory/disk based on size threshold
+        HttpDataFactory factory = new DefaultHttpDataFactory(DefaultHttpDataFactory.MINSIZE); // Disk if MINSIZE exceed
+
+        DiskFileUpload.deleteOnExitTemporaryFile = true; // should delete file on exit (in normal exit)
+        DiskFileUpload.baseDirectory = null; // system temp directory
+        DiskAttribute.deleteOnExitTemporaryFile = true; // should delete file on exit (in normal exit)
+        DiskAttribute.baseDirectory = null; // system temp directory
+
+        try {
+            Bootstrap b = new Bootstrap();
+            b.group(group).channel(NioSocketChannel.class)
+                    .option(ChannelOption.ALLOCATOR, allocator)
+                    .handler(new HttpUploadClientInitializer(sslCtx));
+
+            // Simple Get form: no factory used (not usable)
+            List<Entry<String, String>> headers = formget(b, host, port, get, uriSimple);
+            if (headers == null) {
+                factory.cleanAllHttpData();
+                return;
+            }
+
+            // Simple Post form: factory used for big attributes
+            List<InterfaceHttpData> bodylist = formpost(b, host, port, uriSimple, file, factory, headers);
+            if (bodylist == null) {
+                factory.cleanAllHttpData();
+                return;
+            }
+
+            // Multipart Post form: factory used
+            formpostmultipart(b, host, port, uriFile, factory, headers, bodylist);
+        } finally {
+            // Shut down executor threads to exit.
+            group.shutdownGracefully();
+
+            // Really clean all temporary files if they still exist
+            factory.cleanAllHttpData();
+        }
+    }
+
+    /**
+     * Standard usage of HTTP API in Netty without file Upload (get is not able to achieve File upload
+     * due to limitation on request size).
+     *
+     * @return the list of headers that will be used in every example after
+     **/
+    private static List<Entry<String, String>> formget(
+            Bootstrap bootstrap, String host, int port, String get, URI uriSimple) throws Exception {
+        // XXX /formget
+        // No use of HttpPostRequestEncoder since not a POST
+        Channel channel = bootstrap.connect(host, port).sync().channel();
+
+        // Prepare the HTTP request.
+        QueryStringEncoder encoder = new QueryStringEncoder(get);
+        // add Form attribute
+        encoder.addParam("getform", "GET");
+        encoder.addParam("info", "first value");
+        encoder.addParam("secondinfo", "secondvalue <20><><EFBFBD>&");
+        // not the big one since it is not compatible with GET size
+        // encoder.addParam("thirdinfo", textArea);
+        encoder.addParam("thirdinfo", "third value\r\ntest second line\r\n\r\nnew line\r\n");
+        encoder.addParam("Send", "Send");
+
+        URI uriGet = new URI(encoder.toString());
+        HttpRequest request = new DefaultHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.GET, uriGet.toASCIIString());
+        HttpHeaders headers = request.headers();
+        headers.set(HttpHeaderNames.HOST, host);
+        headers.set(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE);
+        headers.set(HttpHeaderNames.ACCEPT_ENCODING, HttpHeaderValues.GZIP + "," + HttpHeaderValues.DEFLATE);
+
+        headers.set(HttpHeaderNames.ACCEPT_CHARSET, "ISO-8859-1,utf-8;q=0.7,*;q=0.7");
+        headers.set(HttpHeaderNames.ACCEPT_LANGUAGE, "fr");
+        headers.set(HttpHeaderNames.REFERER, uriSimple.toString());
+        headers.set(HttpHeaderNames.USER_AGENT, "Netty Simple Http Client side");
+        headers.set(HttpHeaderNames.ACCEPT, "text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
+
+        //connection will not close but needed
+        // headers.set("Connection","keep-alive");
+        // headers.set("Keep-Alive","300");
+
+        headers.set(
+                HttpHeaderNames.COOKIE, ClientCookieEncoder.STRICT.encode(
+                        new DefaultCookie("my-cookie", "foo"),
+                        new DefaultCookie("another-cookie", "bar"))
+        );
+
+        // send request
+        channel.writeAndFlush(request);
+
+        // Wait for the server to close the connection.
+        channel.closeFuture().sync();
+
+        // convert headers to list
+        return headers.entries();
+    }
+
+    /**
+     * Standard post without multipart but already support on Factory (memory management)
+     *
+     * @return the list of HttpData object (attribute and file) to be reused on next post
+     */
+    private static List<InterfaceHttpData> formpost(
+            Bootstrap bootstrap,
+            String host, int port, URI uriSimple, File file, HttpDataFactory factory,
+            List<Entry<String, String>> headers) throws Exception {
+        // XXX /formpost
+        // Start the connection attempt.
+        ChannelFuture future = bootstrap.connect(SocketUtils.socketAddress(host, port));
+        // Wait until the connection attempt succeeds or fails.
+        Channel channel = future.sync().channel();
+
+        // Prepare the HTTP request.
+        HttpRequest request = new DefaultHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.POST, uriSimple.toASCIIString());
+
+        // Use the PostBody encoder
+        HttpPostRequestEncoder bodyRequestEncoder =
+                new HttpPostRequestEncoder(factory, request, false);  // false => not multipart
+
+        // it is legal to add directly header or cookie into the request until finalize
+        for (Entry<String, String> entry : headers) {
+            request.headers().set(entry.getKey(), entry.getValue());
+        }
+
+        // add Form attribute
+        bodyRequestEncoder.addBodyAttribute("getform", "POST");
+        bodyRequestEncoder.addBodyAttribute("info", "first value");
+        bodyRequestEncoder.addBodyAttribute("secondinfo", "secondvalue <20><><EFBFBD>&");
+        bodyRequestEncoder.addBodyAttribute("thirdinfo", textArea);
+        bodyRequestEncoder.addBodyAttribute("fourthinfo", textAreaLong);
+        bodyRequestEncoder.addBodyFileUpload("myfile", file, "application/x-zip-compressed", false);
+
+        // finalize request
+        request = bodyRequestEncoder.finalizeRequest();
+
+        // Create the bodylist to be reused on the last version with Multipart support
+        List<InterfaceHttpData> bodylist = bodyRequestEncoder.getBodyListAttributes();
+
+        // send request
+        channel.write(request);
+
+        // test if request was chunked and if so, finish the write
+        if (bodyRequestEncoder.isChunked()) { // could do either request.isChunked()
+            // either do it through ChunkedWriteHandler
+            channel.write(bodyRequestEncoder);
+        }
+        channel.flush();
+
+        // Do not clear here since we will reuse the InterfaceHttpData on the next request
+        // for the example (limit action on client side). Take this as a broadcast of the same
+        // request on both Post actions.
+        //
+        // On standard program, it is clearly recommended to clean all files after each request
+        // bodyRequestEncoder.cleanFiles();
+
+        // Wait for the server to close the connection.
+        channel.closeFuture().sync();
+        return bodylist;
+    }
+
+    /**
+     * Multipart example
+     */
+    private static void formpostmultipart(
+            Bootstrap bootstrap, String host, int port, URI uriFile, HttpDataFactory factory,
+            Iterable<Entry<String, String>> headers, List<InterfaceHttpData> bodylist) throws Exception {
+        // XXX /formpostmultipart
+        // Start the connection attempt.
+        ChannelFuture future = bootstrap.connect(SocketUtils.socketAddress(host, port));
+        // Wait until the connection attempt succeeds or fails.
+        Channel channel = future.sync().channel();
+
+        // Prepare the HTTP request.
+        HttpRequest request = new DefaultHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.POST, uriFile.toASCIIString());
+
+        // Use the PostBody encoder
+        HttpPostRequestEncoder bodyRequestEncoder =
+                new HttpPostRequestEncoder(factory, request, true); // true => multipart
+
+        // it is legal to add directly header or cookie into the request until finalize
+        for (Entry<String, String> entry : headers) {
+            request.headers().set(entry.getKey(), entry.getValue());
+        }
+
+        // add Form attribute from previous request in formpost()
+        bodyRequestEncoder.setBodyHttpDatas(bodylist);
+
+        // finalize request
+        bodyRequestEncoder.finalizeRequest();
+
+        // send request
+        channel.write(request);
+
+        // test if request was chunked and if so, finish the write
+        if (bodyRequestEncoder.isChunked()) {
+            channel.write(bodyRequestEncoder);
+        }
+        channel.flush();
+
+        // Now no more use of file representation (and list of HttpData)
+        bodyRequestEncoder.cleanFiles();
+
+        // Wait for the server to close the connection.
+        channel.closeFuture().sync();
+    }
+
+    // use to simulate a small TEXTAREA field in a form
+    private static final String textArea = "short text";
+    // use to simulate a big TEXTAREA field in a form
+    private static final String textAreaLong =
+            "lkjlkjlKJLKJLKJLKJLJlkj lklkj\r\n\r\nLKJJJJJJJJKKKKKKKKKKKKKKK <20><><EFBFBD><EFBFBD>&\r\n\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
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+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
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+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n" +
+            "MMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMMM\r\n";
+}

src/test/java/io/netty/buffer/api/examples/http/upload/HttpUploadClientHandler.java

@@ -0,0 +1,79 @@
+/*
+ * Copyright 2021 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package io.netty.buffer.api.examples.http.upload;
+
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.SimpleChannelInboundHandler;
+import io.netty.handler.codec.http.HttpContent;
+import io.netty.handler.codec.http.HttpObject;
+import io.netty.handler.codec.http.HttpResponse;
+import io.netty.handler.codec.http.HttpUtil;
+import io.netty.handler.codec.http.LastHttpContent;
+import io.netty.util.CharsetUtil;
+
+/**
+ * Handler that just dumps the contents of the response from the server
+ */
+public class HttpUploadClientHandler extends SimpleChannelInboundHandler<HttpObject> {
+
+    private boolean readingChunks;
+
+    @Override
+    public void messageReceived(ChannelHandlerContext ctx, HttpObject msg) {
+        if (msg instanceof HttpResponse) {
+            HttpResponse response = (HttpResponse) msg;
+
+            System.err.println("STATUS: " + response.status());
+            System.err.println("VERSION: " + response.protocolVersion());
+
+            if (!response.headers().isEmpty()) {
+                for (CharSequence name : response.headers().names()) {
+                    for (CharSequence value : response.headers().getAll(name)) {
+                        System.err.println("HEADER: " + name + " = " + value);
+                    }
+                }
+            }
+
+            if (response.status().code() == 200 && HttpUtil.isTransferEncodingChunked(response)) {
+                readingChunks = true;
+                System.err.println("CHUNKED CONTENT {");
+            } else {
+                System.err.println("CONTENT {");
+            }
+        }
+        if (msg instanceof HttpContent) {
+            HttpContent chunk = (HttpContent) msg;
+            System.err.println(chunk.content().toString(CharsetUtil.UTF_8));
+
+            if (chunk instanceof LastHttpContent) {
+                if (readingChunks) {
+                    System.err.println("} END OF CHUNKED CONTENT");
+                } else {
+                    System.err.println("} END OF CONTENT");
+                }
+                readingChunks = false;
+            } else {
+                System.err.println(chunk.content().toString(CharsetUtil.UTF_8));
+            }
+        }
+    }
+
+    @Override
+    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
+        cause.printStackTrace();
+        ctx.channel().close();
+    }
+}

src/test/java/io/netty/buffer/api/examples/http/upload/HttpUploadClientInitializer.java

@@ -0,0 +1,52 @@
+/*
+ * Copyright 2021 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package io.netty.buffer.api.examples.http.upload;
+
+import io.netty.channel.ChannelInitializer;
+import io.netty.channel.ChannelPipeline;
+import io.netty.channel.socket.SocketChannel;
+import io.netty.handler.codec.http.HttpClientCodec;
+import io.netty.handler.codec.http.HttpContentDecompressor;
+import io.netty.handler.ssl.SslContext;
+import io.netty.handler.stream.ChunkedWriteHandler;
+
+public class HttpUploadClientInitializer extends ChannelInitializer<SocketChannel> {
+
+    private final SslContext sslCtx;
+
+    public HttpUploadClientInitializer(SslContext sslCtx) {
+        this.sslCtx = sslCtx;
+    }
+
+    @Override
+    public void initChannel(SocketChannel ch) {
+        ChannelPipeline pipeline = ch.pipeline();
+
+        if (sslCtx != null) {
+            pipeline.addLast("ssl", sslCtx.newHandler(ch.alloc()));
+        }
+
+        pipeline.addLast("codec", new HttpClientCodec());
+
+        // Remove the following line if you don't want automatic content decompression.
+        pipeline.addLast("inflater", new HttpContentDecompressor());
+
+        // to be used since huge file transfer
+        pipeline.addLast("chunkedWriter", new ChunkedWriteHandler());
+
+        pipeline.addLast("handler", new HttpUploadClientHandler());
+    }
+}

src/test/java/io/netty/buffer/api/examples/http/upload/HttpUploadServer.java

@@ -0,0 +1,72 @@
+/*
+ * Copyright 2021 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package io.netty.buffer.api.examples.http.upload;
+
+import io.netty.bootstrap.ServerBootstrap;
+import io.netty.buffer.api.adaptor.ByteBufAllocatorAdaptor;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelOption;
+import io.netty.channel.EventLoopGroup;
+import io.netty.channel.MultithreadEventLoopGroup;
+import io.netty.channel.nio.NioHandler;
+import io.netty.channel.socket.nio.NioServerSocketChannel;
+import io.netty.handler.logging.LogLevel;
+import io.netty.handler.logging.LoggingHandler;
+import io.netty.handler.ssl.SslContext;
+import io.netty.handler.ssl.SslContextBuilder;
+import io.netty.handler.ssl.util.SelfSignedCertificate;
+
+/**
+ * An HTTP server showing how to use the HTTP multipart package for file uploads and decoding post data.
+ */
+public final class HttpUploadServer {
+
+    static final boolean SSL = System.getProperty("ssl") != null;
+    static final int PORT = Integer.parseInt(System.getProperty("port", SSL? "8443" : "8080"));
+
+    public static void main(String[] args) throws Exception {
+        // Configure SSL.
+        final SslContext sslCtx;
+        if (SSL) {
+            SelfSignedCertificate ssc = new SelfSignedCertificate();
+            sslCtx = SslContextBuilder.forServer(ssc.certificate(), ssc.privateKey()).build();
+        } else {
+            sslCtx = null;
+        }
+
+        ByteBufAllocatorAdaptor allocator = new ByteBufAllocatorAdaptor();
+        EventLoopGroup bossGroup = new MultithreadEventLoopGroup(1, NioHandler.newFactory());
+        EventLoopGroup workerGroup = new MultithreadEventLoopGroup(NioHandler.newFactory());
+        try {
+            ServerBootstrap b = new ServerBootstrap();
+            b.group(bossGroup, workerGroup);
+            b.channel(NioServerSocketChannel.class);
+            b.childOption(ChannelOption.ALLOCATOR, allocator);
+            b.handler(new LoggingHandler(LogLevel.INFO));
+            b.childHandler(new HttpUploadServerInitializer(sslCtx));
+
+            Channel ch = b.bind(PORT).sync().channel();
+
+            System.err.println("Open your web browser and navigate to " +
+                    (SSL? "https" : "http") + "://127.0.0.1:" + PORT + '/');
+
+            ch.closeFuture().sync();
+        } finally {
+            bossGroup.shutdownGracefully();
+            workerGroup.shutdownGracefully();
+        }
+    }
+}

src/test/java/io/netty/buffer/api/examples/http/upload/HttpUploadServerHandler.java

@@ -0,0 +1,453 @@
+/*
+ * Copyright 2021 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package io.netty.buffer.api.examples.http.upload;
+
+import io.netty.buffer.ByteBuf;
+import io.netty.channel.Channel;
+import io.netty.channel.ChannelFuture;
+import io.netty.channel.ChannelFutureListener;
+import io.netty.channel.ChannelHandlerContext;
+import io.netty.channel.SimpleChannelInboundHandler;
+import io.netty.handler.codec.http.DefaultFullHttpResponse;
+import io.netty.handler.codec.http.FullHttpResponse;
+import io.netty.handler.codec.http.HttpContent;
+import io.netty.handler.codec.http.HttpHeaderNames;
+import io.netty.handler.codec.http.HttpHeaderValues;
+import io.netty.handler.codec.http.HttpMethod;
+import io.netty.handler.codec.http.HttpObject;
+import io.netty.handler.codec.http.HttpRequest;
+import io.netty.handler.codec.http.HttpResponseStatus;
+import io.netty.handler.codec.http.HttpUtil;
+import io.netty.handler.codec.http.HttpVersion;
+import io.netty.handler.codec.http.LastHttpContent;
+import io.netty.handler.codec.http.QueryStringDecoder;
+import io.netty.handler.codec.http.cookie.Cookie;
+import io.netty.handler.codec.http.cookie.ServerCookieDecoder;
+import io.netty.handler.codec.http.cookie.ServerCookieEncoder;
+import io.netty.handler.codec.http.multipart.Attribute;
+import io.netty.handler.codec.http.multipart.DefaultHttpDataFactory;
+import io.netty.handler.codec.http.multipart.DiskAttribute;
+import io.netty.handler.codec.http.multipart.DiskFileUpload;
+import io.netty.handler.codec.http.multipart.FileUpload;
+import io.netty.handler.codec.http.multipart.HttpData;
+import io.netty.handler.codec.http.multipart.HttpDataFactory;
+import io.netty.handler.codec.http.multipart.HttpPostRequestDecoder;
+import io.netty.handler.codec.http.multipart.HttpPostRequestDecoder.EndOfDataDecoderException;
+import io.netty.handler.codec.http.multipart.HttpPostRequestDecoder.ErrorDataDecoderException;
+import io.netty.handler.codec.http.multipart.InterfaceHttpData;
+import io.netty.handler.codec.http.multipart.InterfaceHttpData.HttpDataType;
+import io.netty.util.CharsetUtil;
+
+import java.io.IOException;
+import java.net.URI;
+import java.util.Collections;
+import java.util.List;
+import java.util.Map;
+import java.util.Map.Entry;
+import java.util.Set;
+import java.util.logging.Level;
+import java.util.logging.Logger;
+
+import static io.netty.buffer.Unpooled.copiedBuffer;
+
+public class HttpUploadServerHandler extends SimpleChannelInboundHandler<HttpObject> {
+
+    private static final Logger logger = Logger.getLogger(HttpUploadServerHandler.class.getName());
+
+    private HttpRequest request;
+
+    private HttpData partialContent;
+
+    private final StringBuilder responseContent = new StringBuilder();
+
+    private static final HttpDataFactory factory =
+            new DefaultHttpDataFactory(DefaultHttpDataFactory.MINSIZE); // Disk if size exceed
+
+    private HttpPostRequestDecoder decoder;
+
+    static {
+        DiskFileUpload.deleteOnExitTemporaryFile = true; // should delete file
+                                                         // on exit (in normal
+                                                         // exit)
+        DiskFileUpload.baseDirectory = null; // system temp directory
+        DiskAttribute.deleteOnExitTemporaryFile = true; // should delete file on
+                                                        // exit (in normal exit)
+        DiskAttribute.baseDirectory = null; // system temp directory
+    }
+
+    @Override
+    public void channelInactive(ChannelHandlerContext ctx) throws Exception {
+        if (decoder != null) {
+            decoder.cleanFiles();
+        }
+    }
+
+    @Override
+    public void messageReceived(ChannelHandlerContext ctx, HttpObject msg) throws Exception {
+        if (msg instanceof HttpRequest) {
+            HttpRequest request = this.request = (HttpRequest) msg;
+            URI uri = new URI(request.uri());
+            if (!uri.getPath().startsWith("/form")) {
+                // Write Menu
+                writeMenu(ctx);
+                return;
+            }
+            responseContent.setLength(0);
+            responseContent.append("WELCOME TO THE WILD WILD WEB SERVER\r\n");
+            responseContent.append("===================================\r\n");
+
+            responseContent.append("VERSION: " + request.protocolVersion().text() + "\r\n");
+
+            responseContent.append("REQUEST_URI: " + request.uri() + "\r\n\r\n");
+            responseContent.append("\r\n\r\n");
+
+            // new getMethod
+            for (Entry<String, String> entry : request.headers()) {
+                responseContent.append("HEADER: " + entry.getKey() + '=' + entry.getValue() + "\r\n");
+            }
+            responseContent.append("\r\n\r\n");
+
+            // new getMethod
+            Set<Cookie> cookies;
+            String value = request.headers().get(HttpHeaderNames.COOKIE);
+            if (value == null) {
+                cookies = Collections.emptySet();
+            } else {
+                cookies = ServerCookieDecoder.STRICT.decode(value);
+            }
+            for (Cookie cookie : cookies) {
+                responseContent.append("COOKIE: " + cookie + "\r\n");
+            }
+            responseContent.append("\r\n\r\n");
+
+            QueryStringDecoder decoderQuery = new QueryStringDecoder(request.uri());
+            Map<String, List<String>> uriAttributes = decoderQuery.parameters();
+            for (Entry<String, List<String>> attr: uriAttributes.entrySet()) {
+                for (String attrVal: attr.getValue()) {
+                    responseContent.append("URI: " + attr.getKey() + '=' + attrVal + "\r\n");
+                }
+            }
+            responseContent.append("\r\n\r\n");
+
+            // if GET Method: should not try to create an HttpPostRequestDecoder
+            if (HttpMethod.GET.equals(request.method())) {
+                // GET Method: should not try to create an HttpPostRequestDecoder
+                // So stop here
+                responseContent.append("\r\n\r\nEND OF GET CONTENT\r\n");
+                // Not now: LastHttpContent will be sent writeResponse(ctx.channel());
+                return;
+            }
+            try {
+                decoder = new HttpPostRequestDecoder(factory, request);
+            } catch (ErrorDataDecoderException e1) {
+                logger.log(Level.WARNING, e1.getMessage(), e1);
+                responseContent.append(e1.getMessage());
+                writeResponse(ctx.channel(), true);
+                return;
+            }
+
+            boolean readingChunks = HttpUtil.isTransferEncodingChunked(request);
+            responseContent.append("Is Chunked: " + readingChunks + "\r\n");
+            responseContent.append("IsMultipart: " + decoder.isMultipart() + "\r\n");
+            if (readingChunks) {
+                // Chunk version
+                responseContent.append("Chunks: ");
+            }
+        }
+
+        // check if the decoder was constructed before
+        // if not it handles the form get
+        if (decoder != null) {
+            if (msg instanceof HttpContent) {
+                // New chunk is received
+                HttpContent chunk = (HttpContent) msg;
+                try {
+                    decoder.offer(chunk);
+                } catch (ErrorDataDecoderException e1) {
+                    logger.log(Level.WARNING, e1.getMessage(), e1);
+                    responseContent.append(e1.getMessage());
+                    writeResponse(ctx.channel(), true);
+                    return;
+                }
+                responseContent.append('o');
+                // example of reading chunk by chunk (minimize memory usage due to
+                // Factory)
+                readHttpDataChunkByChunk();
+                // example of reading only if at the end
+                if (chunk instanceof LastHttpContent) {
+                    writeResponse(ctx.channel());
+
+                    reset();
+                }
+            }
+        } else {
+            writeResponse(ctx.channel());
+        }
+    }
+
+    private void reset() {
+        request = null;
+
+        // destroy the decoder to release all resources
+        decoder.destroy();
+        decoder = null;
+    }
+
+    /**
+     * Example of reading request by chunk and getting values from chunk to chunk
+     */
+    private void readHttpDataChunkByChunk() {
+        try {
+            while (decoder.hasNext()) {
+                InterfaceHttpData data = decoder.next();
+                if (data != null) {
+                    // check if current HttpData is a FileUpload and previously set as partial
+                    long length = -1;
+                    if (partialContent == data) {
+                        logger.info(" 100% (FinalSize: " + (length = partialContent.length()) + ')');
+                        partialContent = null;
+                    }
+                    // new value
+                    writeHttpData(data);
+                }
+            }
+            // Check partial decoding for a FileUpload
+            InterfaceHttpData data = decoder.currentPartialHttpData();
+            if (data != null) {
+                StringBuilder builder = new StringBuilder();
+                if (partialContent == null) {
+                    partialContent = (HttpData) data;
+                    if (partialContent instanceof FileUpload) {
+                        builder.append("Start FileUpload: ")
+                            .append(((FileUpload) partialContent).getFilename()).append(' ');
+                    } else {
+                        builder.append("Start Attribute: ")
+                            .append(partialContent.getName()).append(' ');
+                    }
+                    builder.append("(DefinedSize: ").append(partialContent.definedLength()).append(')');
+                }
+                if (partialContent.definedLength() > 0) {
+                    builder.append(' ').append(partialContent.length() * 100 / partialContent.definedLength())
+                        .append("% ");
+                } else {
+                    builder.append(' ').append(partialContent.length()).append(' ');
+                }
+                logger.info(builder.toString());
+            }
+        } catch (EndOfDataDecoderException e1) {
+            // end
+            responseContent.append("\r\n\r\nEND OF CONTENT CHUNK BY CHUNK\r\n\r\n");
+        }
+    }
+
+    private void writeHttpData(InterfaceHttpData data) {
+        if (data.getHttpDataType() == HttpDataType.Attribute) {
+            Attribute attribute = (Attribute) data;
+            String value;
+            try {
+                value = attribute.getValue();
+            } catch (IOException e1) {
+                // Error while reading data from File, only print name and error
+                logger.log(Level.WARNING, e1.getMessage(), e1);
+                responseContent.append("\r\nBODY Attribute: " + attribute.getHttpDataType().name() + ": "
+                        + attribute.getName() + " Error while reading value: " + e1.getMessage() + "\r\n");
+                return;
+            }
+            if (value.length() > 100) {
+                responseContent.append("\r\nBODY Attribute: " + attribute.getHttpDataType().name() + ": "
+                        + attribute.getName() + " data too long\r\n");
+            } else {
+                responseContent.append("\r\nBODY Attribute: " + attribute.getHttpDataType().name() + ": "
+                        + attribute + "\r\n");
+            }
+        } else {
+            responseContent.append("\r\nBODY FileUpload: " + data.getHttpDataType().name() + ": " + data
+                    + "\r\n");
+            if (data.getHttpDataType() == HttpDataType.FileUpload) {
+                FileUpload fileUpload = (FileUpload) data;
+                if (fileUpload.isCompleted()) {
+                    if (fileUpload.length() < 10000) {
+                        responseContent.append("\tContent of file\r\n");
+                        try {
+                            responseContent.append(fileUpload.getString(fileUpload.getCharset()));
+                        } catch (IOException e1) {
+                            // do nothing for the example
+                            logger.log(Level.WARNING, e1.getMessage(), e1);
+                        }
+                        responseContent.append("\r\n");
+                    } else {
+                        responseContent.append("\tFile too long to be printed out:" + fileUpload.length() + "\r\n");
+                    }
+                    // fileUpload.isInMemory();// tells if the file is in Memory
+                    // or on File
+                    // fileUpload.renameTo(dest); // enable to move into another
+                    // File dest
+                    // decoder.removeFileUploadFromClean(fileUpload); //remove
+                    // the File of to delete file
+                } else {
+                    responseContent.append("\tFile to be continued but should not!\r\n");
+                }
+            }
+        }
+    }
+
+    private void writeResponse(Channel channel) {
+        writeResponse(channel, false);
+    }
+
+    private void writeResponse(Channel channel, boolean forceClose) {
+        // Convert the response content to a ChannelBuffer.
+        ByteBuf buf = copiedBuffer(responseContent.toString(), CharsetUtil.UTF_8);
+        responseContent.setLength(0);
+
+        // Decide whether to close the connection or not.
+        boolean keepAlive = HttpUtil.isKeepAlive(request) && !forceClose;
+
+        // Build the response object.
+        FullHttpResponse response = new DefaultFullHttpResponse(
+                HttpVersion.HTTP_1_1, HttpResponseStatus.OK, buf);
+        response.headers().set(HttpHeaderNames.CONTENT_TYPE, "text/plain; charset=UTF-8");
+        response.headers().setInt(HttpHeaderNames.CONTENT_LENGTH, buf.readableBytes());
+
+        if (!keepAlive) {
+            response.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE);
+        } else if (request.protocolVersion().equals(HttpVersion.HTTP_1_0)) {
+            response.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE);
+        }
+
+        Set<Cookie> cookies;
+        String value = request.headers().get(HttpHeaderNames.COOKIE);
+        if (value == null) {
+            cookies = Collections.emptySet();
+        } else {
+            cookies = ServerCookieDecoder.STRICT.decode(value);
+        }
+        if (!cookies.isEmpty()) {
+            // Reset the cookies if necessary.
+            for (Cookie cookie : cookies) {
+                response.headers().add(HttpHeaderNames.SET_COOKIE, ServerCookieEncoder.STRICT.encode(cookie));
+            }
+        }
+        // Write the response.
+        ChannelFuture future = channel.writeAndFlush(response);
+        // Close the connection after the write operation is done if necessary.
+        if (!keepAlive) {
+            future.addListener(ChannelFutureListener.CLOSE);
+        }
+    }
+
+    private void writeMenu(ChannelHandlerContext ctx) {
+        // print several HTML forms
+        // Convert the response content to a ChannelBuffer.
+        responseContent.setLength(0);
+
+        // create Pseudo Menu
+        responseContent.append("<html>");
+        responseContent.append("<head>");
+        responseContent.append("<title>Netty Test Form</title>\r\n");
+        responseContent.append("</head>\r\n");
+        responseContent.append("<body bgcolor=white><style>td{font-size: 12pt;}</style>");
+
+        responseContent.append("<table border=\"0\">");
+        responseContent.append("<tr>");
+        responseContent.append("<td>");
+        responseContent.append("<h1>Netty Test Form</h1>");
+        responseContent.append("Choose one FORM");
+        responseContent.append("</td>");
+        responseContent.append("</tr>");
+        responseContent.append("</table>\r\n");
+
+        // GET
+        responseContent.append("<CENTER>GET FORM<HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");
+        responseContent.append("<FORM ACTION=\"/formget\" METHOD=\"GET\">");
+        responseContent.append("<input type=hidden name=getform value=\"GET\">");
+        responseContent.append("<table border=\"0\">");
+        responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"info\" size=10></td></tr>");
+        responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"secondinfo\" size=20>");
+        responseContent
+                .append("<tr><td>Fill with value: <br> <textarea name=\"thirdinfo\" cols=40 rows=10></textarea>");
+        responseContent.append("</td></tr>");
+        responseContent.append("<tr><td><INPUT TYPE=\"submit\" NAME=\"Send\" VALUE=\"Send\"></INPUT></td>");
+        responseContent.append("<td><INPUT TYPE=\"reset\" NAME=\"Clear\" VALUE=\"Clear\" ></INPUT></td></tr>");
+        responseContent.append("</table></FORM>\r\n");
+        responseContent.append("<CENTER><HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");
+
+        // POST
+        responseContent.append("<CENTER>POST FORM<HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");
+        responseContent.append("<FORM ACTION=\"/formpost\" METHOD=\"POST\">");
+        responseContent.append("<input type=hidden name=getform value=\"POST\">");
+        responseContent.append("<table border=\"0\">");
+        responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"info\" size=10></td></tr>");
+        responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"secondinfo\" size=20>");
+        responseContent
+                .append("<tr><td>Fill with value: <br> <textarea name=\"thirdinfo\" cols=40 rows=10></textarea>");
+        responseContent.append("<tr><td>Fill with file (only file name will be transmitted): <br> "
+                + "<input type=file name=\"myfile\">");
+        responseContent.append("</td></tr>");
+        responseContent.append("<tr><td><INPUT TYPE=\"submit\" NAME=\"Send\" VALUE=\"Send\"></INPUT></td>");
+        responseContent.append("<td><INPUT TYPE=\"reset\" NAME=\"Clear\" VALUE=\"Clear\" ></INPUT></td></tr>");
+        responseContent.append("</table></FORM>\r\n");
+        responseContent.append("<CENTER><HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");
+
+        // POST with enctype="multipart/form-data"
+        responseContent.append("<CENTER>POST MULTIPART FORM<HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");
+        responseContent.append("<FORM ACTION=\"/formpostmultipart\" ENCTYPE=\"multipart/form-data\" METHOD=\"POST\">");
+        responseContent.append("<input type=hidden name=getform value=\"POST\">");
+        responseContent.append("<table border=\"0\">");
+        responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"info\" size=10></td></tr>");
+        responseContent.append("<tr><td>Fill with value: <br> <input type=text name=\"secondinfo\" size=20>");
+        responseContent
+                .append("<tr><td>Fill with value: <br> <textarea name=\"thirdinfo\" cols=40 rows=10></textarea>");
+        responseContent.append("<tr><td>Fill with file: <br> <input type=file name=\"myfile\">");
+        responseContent.append("</td></tr>");
+        responseContent.append("<tr><td><INPUT TYPE=\"submit\" NAME=\"Send\" VALUE=\"Send\"></INPUT></td>");
+        responseContent.append("<td><INPUT TYPE=\"reset\" NAME=\"Clear\" VALUE=\"Clear\" ></INPUT></td></tr>");
+        responseContent.append("</table></FORM>\r\n");
+        responseContent.append("<CENTER><HR WIDTH=\"75%\" NOSHADE color=\"blue\"></CENTER>");
+
+        responseContent.append("</body>");
+        responseContent.append("</html>");
+
+        ByteBuf buf = copiedBuffer(responseContent.toString(), CharsetUtil.UTF_8);
+        // Build the response object.
+        FullHttpResponse response = new DefaultFullHttpResponse(
+                HttpVersion.HTTP_1_1, HttpResponseStatus.OK, buf);
+
+        response.headers().set(HttpHeaderNames.CONTENT_TYPE, "text/html; charset=UTF-8");
+        response.headers().setInt(HttpHeaderNames.CONTENT_LENGTH, buf.readableBytes());
+
+        // Decide whether to close the connection or not.
+        boolean keepAlive = HttpUtil.isKeepAlive(request);
+        if (!keepAlive) {
+            response.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.CLOSE);
+        } else if (request.protocolVersion().equals(HttpVersion.HTTP_1_0)) {
+            response.headers().set(HttpHeaderNames.CONNECTION, HttpHeaderValues.KEEP_ALIVE);
+        }
+
+        // Write the response.
+        ChannelFuture future = ctx.channel().writeAndFlush(response);
+        // Close the connection after the write operation is done if necessary.
+        if (!keepAlive) {
+            future.addListener(ChannelFutureListener.CLOSE);
+        }
+    }
+
+    @Override
+    public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
+        logger.log(Level.WARNING, responseContent.toString(), cause);
+        ctx.channel().close();
+    }
+}

src/test/java/io/netty/buffer/api/examples/http/upload/HttpUploadServerInitializer.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2021 The Netty Project
+ *
+ * The Netty Project licenses this file to you under the Apache License,
+ * version 2.0 (the "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at:
+ *
+ *   https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ */
+package io.netty.buffer.api.examples.http.upload;
+
+import io.netty.channel.ChannelInitializer;
+import io.netty.channel.ChannelPipeline;
+import io.netty.channel.socket.SocketChannel;
+import io.netty.handler.codec.http.HttpContentCompressor;
+import io.netty.handler.codec.http.HttpRequestDecoder;
+import io.netty.handler.codec.http.HttpResponseEncoder;
+import io.netty.handler.ssl.SslContext;
+
+public class HttpUploadServerInitializer extends ChannelInitializer<SocketChannel> {
+
+    private final SslContext sslCtx;
+
+    public HttpUploadServerInitializer(SslContext sslCtx) {
+        this.sslCtx = sslCtx;
+    }
+
+    @Override
+    public void initChannel(SocketChannel ch) {
+        ChannelPipeline pipeline = ch.pipeline();
+
+        if (sslCtx != null) {
+            pipeline.addLast(sslCtx.newHandler(ch.alloc()));
+        }
+
+        pipeline.addLast(new HttpRequestDecoder());
+        pipeline.addLast(new HttpResponseEncoder());
+
+        // Remove the following line if you don't want automatic content compression.
+        pipeline.addLast(new HttpContentCompressor());
+
+        pipeline.addLast(new HttpUploadServerHandler());
+    }
+}

src/test/resources/junit-platform.properties

@@ -0,0 +1,18 @@
+# Copyright 2021 The Netty Project
+#
+# The Netty Project licenses this file to you under the Apache License,
+# version 2.0 (the "License"); you may not use this file except in compliance
+# with the License. You may obtain a copy of the License at:
+#
+#   https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+junit.jupiter.execution.parallel.enabled = true
+junit.jupiter.execution.parallel.mode.default = concurrent
+junit.jupiter.testinstance.lifecycle.default = per_class
+junit.jupiter.execution.parallel.config.strategy = fixed
+junit.jupiter.execution.parallel.config.fixed.parallelism = 16