http://netty.io/netty-all/: Netty is an asynchronous event-driven network application framework for rapid development of maintainable high performance protocol servers and clients. (The Netty Project) 
public class io.netty.handler.codec.http2.InboundHttpToHttp2Adapter extends io.netty.channel.ChannelInboundHandlerAdapter
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: io.netty.handler.codec.http2.InboundHttpToHttp2Adapter
  super_class: io.netty.channel.ChannelInboundHandlerAdapter
{
  private final io.netty.handler.codec.http2.Http2Connection connection;
    descriptor: Lio/netty/handler/codec/http2/Http2Connection;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private final io.netty.handler.codec.http2.Http2FrameListener listener;
    descriptor: Lio/netty/handler/codec/http2/Http2FrameListener;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  public void <init>(io.netty.handler.codec.http2.Http2Connection, io.netty.handler.codec.http2.Http2FrameListener);
    descriptor: (Lio/netty/handler/codec/http2/Http2Connection;Lio/netty/handler/codec/http2/Http2FrameListener;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=3
        start local 0 // io.netty.handler.codec.http2.InboundHttpToHttp2Adapter this
        start local 1 // io.netty.handler.codec.http2.Http2Connection connection
        start local 2 // io.netty.handler.codec.http2.Http2FrameListener listener
         0: .line 33
            aload 0 /* this */
            invokespecial io.netty.channel.ChannelInboundHandlerAdapter.<init>:()V
         1: .line 34
            aload 0 /* this */
            aload 1 /* connection */
            putfield io.netty.handler.codec.http2.InboundHttpToHttp2Adapter.connection:Lio/netty/handler/codec/http2/Http2Connection;
         2: .line 35
            aload 0 /* this */
            aload 2 /* listener */
            putfield io.netty.handler.codec.http2.InboundHttpToHttp2Adapter.listener:Lio/netty/handler/codec/http2/Http2FrameListener;
         3: .line 36
            return
        end local 2 // io.netty.handler.codec.http2.Http2FrameListener listener
        end local 1 // io.netty.handler.codec.http2.Http2Connection connection
        end local 0 // io.netty.handler.codec.http2.InboundHttpToHttp2Adapter this
      LocalVariableTable:
        Start  End  Slot        Name  Signature
            0    4     0        this  Lio/netty/handler/codec/http2/InboundHttpToHttp2Adapter;
            0    4     1  connection  Lio/netty/handler/codec/http2/Http2Connection;
            0    4     2    listener  Lio/netty/handler/codec/http2/Http2FrameListener;
    MethodParameters:
            Name  Flags
      connection  
      listener    

  private static int getStreamId(io.netty.handler.codec.http2.Http2Connection, io.netty.handler.codec.http.HttpHeaders);
    descriptor: (Lio/netty/handler/codec/http2/Http2Connection;Lio/netty/handler/codec/http/HttpHeaders;)I
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // io.netty.handler.codec.http2.Http2Connection connection
        start local 1 // io.netty.handler.codec.http.HttpHeaders httpHeaders
         0: .line 39
            aload 1 /* httpHeaders */
            getstatic io.netty.handler.codec.http2.HttpConversionUtil$ExtensionHeaderNames.STREAM_ID:Lio/netty/handler/codec/http2/HttpConversionUtil$ExtensionHeaderNames;
            invokevirtual io.netty.handler.codec.http2.HttpConversionUtil$ExtensionHeaderNames.text:()Lio/netty/util/AsciiString;
         1: .line 40
            aload 0 /* connection */
            invokeinterface io.netty.handler.codec.http2.Http2Connection.remote:()Lio/netty/handler/codec/http2/Http2Connection$Endpoint;
            invokeinterface io.netty.handler.codec.http2.Http2Connection$Endpoint.incrementAndGetNextStreamId:()I
         2: .line 39
            invokevirtual io.netty.handler.codec.http.HttpHeaders.getInt:(Ljava/lang/CharSequence;I)I
            ireturn
        end local 1 // io.netty.handler.codec.http.HttpHeaders httpHeaders
        end local 0 // io.netty.handler.codec.http2.Http2Connection connection
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    3     0   connection  Lio/netty/handler/codec/http2/Http2Connection;
            0    3     1  httpHeaders  Lio/netty/handler/codec/http/HttpHeaders;
    MethodParameters:
             Name  Flags
      connection   
      httpHeaders  

  public void channelRead(io.netty.channel.ChannelHandlerContext, java.lang.Object);
    descriptor: (Lio/netty/channel/ChannelHandlerContext;Ljava/lang/Object;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=4, locals=3, args_size=3
        start local 0 // io.netty.handler.codec.http2.InboundHttpToHttp2Adapter this
        start local 1 // io.netty.channel.ChannelHandlerContext ctx
        start local 2 // java.lang.Object msg
         0: .line 45
            aload 2 /* msg */
            instanceof io.netty.handler.codec.http.FullHttpMessage
            ifeq 3
         1: .line 46
            aload 1 /* ctx */
            aload 0 /* this */
            getfield io.netty.handler.codec.http2.InboundHttpToHttp2Adapter.connection:Lio/netty/handler/codec/http2/Http2Connection;
            aload 0 /* this */
            getfield io.netty.handler.codec.http2.InboundHttpToHttp2Adapter.listener:Lio/netty/handler/codec/http2/Http2FrameListener;
            aload 2 /* msg */
            checkcast io.netty.handler.codec.http.FullHttpMessage
            invokestatic io.netty.handler.codec.http2.InboundHttpToHttp2Adapter.handle:(Lio/netty/channel/ChannelHandlerContext;Lio/netty/handler/codec/http2/Http2Connection;Lio/netty/handler/codec/http2/Http2FrameListener;Lio/netty/handler/codec/http/FullHttpMessage;)V
         2: .line 47
            goto 4
         3: .line 48
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 1 /* ctx */
            aload 2 /* msg */
            invokespecial io.netty.channel.ChannelInboundHandlerAdapter.channelRead:(Lio/netty/channel/ChannelHandlerContext;Ljava/lang/Object;)V
         4: .line 50
      StackMap locals:
      StackMap stack:
            return
        end local 2 // java.lang.Object msg
        end local 1 // io.netty.channel.ChannelHandlerContext ctx
        end local 0 // io.netty.handler.codec.http2.InboundHttpToHttp2Adapter this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    5     0  this  Lio/netty/handler/codec/http2/InboundHttpToHttp2Adapter;
            0    5     1   ctx  Lio/netty/channel/ChannelHandlerContext;
            0    5     2   msg  Ljava/lang/Object;
    Exceptions:
      throws java.lang.Exception
    MethodParameters:
      Name  Flags
      ctx   
      msg   

  static void handle(io.netty.channel.ChannelHandlerContext, io.netty.handler.codec.http2.Http2Connection, io.netty.handler.codec.http2.Http2FrameListener, io.netty.handler.codec.http.FullHttpMessage);
    descriptor: (Lio/netty/channel/ChannelHandlerContext;Lio/netty/handler/codec/http2/Http2Connection;Lio/netty/handler/codec/http2/Http2FrameListener;Lio/netty/handler/codec/http/FullHttpMessage;)V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=6, locals=11, args_size=4
        start local 0 // io.netty.channel.ChannelHandlerContext ctx
        start local 1 // io.netty.handler.codec.http2.Http2Connection connection
        start local 2 // io.netty.handler.codec.http2.Http2FrameListener listener
        start local 3 // io.netty.handler.codec.http.FullHttpMessage message
         0: .line 58
            aload 1 /* connection */
            aload 3 /* message */
            invokeinterface io.netty.handler.codec.http.FullHttpMessage.headers:()Lio/netty/handler/codec/http/HttpHeaders;
            invokestatic io.netty.handler.codec.http2.InboundHttpToHttp2Adapter.getStreamId:(Lio/netty/handler/codec/http2/Http2Connection;Lio/netty/handler/codec/http/HttpHeaders;)I
            istore 4 /* streamId */
        start local 4 // int streamId
         1: .line 59
            aload 1 /* connection */
            iload 4 /* streamId */
            invokeinterface io.netty.handler.codec.http2.Http2Connection.stream:(I)Lio/netty/handler/codec/http2/Http2Stream;
            astore 5 /* stream */
        start local 5 // io.netty.handler.codec.http2.Http2Stream stream
         2: .line 60
            aload 5 /* stream */
            ifnonnull 4
         3: .line 61
            aload 1 /* connection */
            invokeinterface io.netty.handler.codec.http2.Http2Connection.remote:()Lio/netty/handler/codec/http2/Http2Connection$Endpoint;
            iload 4 /* streamId */
            iconst_0
            invokeinterface io.netty.handler.codec.http2.Http2Connection$Endpoint.createStream:(IZ)Lio/netty/handler/codec/http2/Http2Stream;
            astore 5 /* stream */
         4: .line 63
      StackMap locals: int io.netty.handler.codec.http2.Http2Stream
      StackMap stack:
            aload 3 /* message */
            invokeinterface io.netty.handler.codec.http.FullHttpMessage.headers:()Lio/netty/handler/codec/http/HttpHeaders;
            getstatic io.netty.handler.codec.http2.HttpConversionUtil$ExtensionHeaderNames.SCHEME:Lio/netty/handler/codec/http2/HttpConversionUtil$ExtensionHeaderNames;
            invokevirtual io.netty.handler.codec.http2.HttpConversionUtil$ExtensionHeaderNames.text:()Lio/netty/util/AsciiString;
            getstatic io.netty.handler.codec.http.HttpScheme.HTTP:Lio/netty/handler/codec/http/HttpScheme;
            invokevirtual io.netty.handler.codec.http.HttpScheme.name:()Lio/netty/util/AsciiString;
            invokevirtual io.netty.handler.codec.http.HttpHeaders.set:(Ljava/lang/CharSequence;Ljava/lang/Object;)Lio/netty/handler/codec/http/HttpHeaders;
            pop
         5: .line 64
            aload 3 /* message */
            iconst_1
            invokestatic io.netty.handler.codec.http2.HttpConversionUtil.toHttp2Headers:(Lio/netty/handler/codec/http/HttpMessage;Z)Lio/netty/handler/codec/http2/Http2Headers;
            astore 6 /* messageHeaders */
        start local 6 // io.netty.handler.codec.http2.Http2Headers messageHeaders
         6: .line 65
            aload 3 /* message */
            invokeinterface io.netty.handler.codec.http.FullHttpMessage.content:()Lio/netty/buffer/ByteBuf;
            invokevirtual io.netty.buffer.ByteBuf.isReadable:()Z
            istore 7 /* hasContent */
        start local 7 // boolean hasContent
         7: .line 66
            aload 3 /* message */
            invokeinterface io.netty.handler.codec.http.FullHttpMessage.trailingHeaders:()Lio/netty/handler/codec/http/HttpHeaders;
            invokevirtual io.netty.handler.codec.http.HttpHeaders.isEmpty:()Z
            ifeq 8
            iconst_0
            goto 9
      StackMap locals: io.netty.handler.codec.http2.Http2Headers int
      StackMap stack:
         8: iconst_1
      StackMap locals:
      StackMap stack: int
         9: istore 8 /* hasTrailers */
        start local 8 // boolean hasTrailers
        10: .line 67
            aload 2 /* listener */
        11: .line 68
            aload 0 /* ctx */
            iload 4 /* streamId */
            aload 6 /* messageHeaders */
            iconst_0
            iload 7 /* hasContent */
            ifne 12
            iload 8 /* hasTrailers */
            ifeq 13
      StackMap locals: io.netty.channel.ChannelHandlerContext io.netty.handler.codec.http2.Http2Connection io.netty.handler.codec.http2.Http2FrameListener io.netty.handler.codec.http.FullHttpMessage int io.netty.handler.codec.http2.Http2Stream io.netty.handler.codec.http2.Http2Headers int int
      StackMap stack: io.netty.handler.codec.http2.Http2FrameListener io.netty.channel.ChannelHandlerContext int io.netty.handler.codec.http2.Http2Headers int
        12: iconst_0
            goto 14
      StackMap locals: io.netty.channel.ChannelHandlerContext io.netty.handler.codec.http2.Http2Connection io.netty.handler.codec.http2.Http2FrameListener io.netty.handler.codec.http.FullHttpMessage int io.netty.handler.codec.http2.Http2Stream io.netty.handler.codec.http2.Http2Headers int int
      StackMap stack: io.netty.handler.codec.http2.Http2FrameListener io.netty.channel.ChannelHandlerContext int io.netty.handler.codec.http2.Http2Headers int
        13: iconst_1
        14: .line 67
      StackMap locals: io.netty.channel.ChannelHandlerContext io.netty.handler.codec.http2.Http2Connection io.netty.handler.codec.http2.Http2FrameListener io.netty.handler.codec.http.FullHttpMessage int io.netty.handler.codec.http2.Http2Stream io.netty.handler.codec.http2.Http2Headers int int
      StackMap stack: io.netty.handler.codec.http2.Http2FrameListener io.netty.channel.ChannelHandlerContext int io.netty.handler.codec.http2.Http2Headers int int
            invokeinterface io.netty.handler.codec.http2.Http2FrameListener.onHeadersRead:(Lio/netty/channel/ChannelHandlerContext;ILio/netty/handler/codec/http2/Http2Headers;IZ)V
        15: .line 69
            iload 7 /* hasContent */
            ifeq 19
        16: .line 70
            aload 2 /* listener */
            aload 0 /* ctx */
            iload 4 /* streamId */
            aload 3 /* message */
            invokeinterface io.netty.handler.codec.http.FullHttpMessage.content:()Lio/netty/buffer/ByteBuf;
            iconst_0
            iload 8 /* hasTrailers */
            ifeq 17
            iconst_0
            goto 18
      StackMap locals: io.netty.channel.ChannelHandlerContext io.netty.handler.codec.http2.Http2Connection io.netty.handler.codec.http2.Http2FrameListener io.netty.handler.codec.http.FullHttpMessage int io.netty.handler.codec.http2.Http2Stream io.netty.handler.codec.http2.Http2Headers int int
      StackMap stack: io.netty.handler.codec.http2.Http2FrameListener io.netty.channel.ChannelHandlerContext int io.netty.buffer.ByteBuf int
        17: iconst_1
      StackMap locals: io.netty.channel.ChannelHandlerContext io.netty.handler.codec.http2.Http2Connection io.netty.handler.codec.http2.Http2FrameListener io.netty.handler.codec.http.FullHttpMessage int io.netty.handler.codec.http2.Http2Stream io.netty.handler.codec.http2.Http2Headers int int
      StackMap stack: io.netty.handler.codec.http2.Http2FrameListener io.netty.channel.ChannelHandlerContext int io.netty.buffer.ByteBuf int int
        18: invokeinterface io.netty.handler.codec.http2.Http2FrameListener.onDataRead:(Lio/netty/channel/ChannelHandlerContext;ILio/netty/buffer/ByteBuf;IZ)I
            pop
        19: .line 72
      StackMap locals:
      StackMap stack:
            iload 8 /* hasTrailers */
            ifeq 22
        20: .line 73
            aload 3 /* message */
            invokeinterface io.netty.handler.codec.http.FullHttpMessage.trailingHeaders:()Lio/netty/handler/codec/http/HttpHeaders;
            iconst_1
            invokestatic io.netty.handler.codec.http2.HttpConversionUtil.toHttp2Headers:(Lio/netty/handler/codec/http/HttpHeaders;Z)Lio/netty/handler/codec/http2/Http2Headers;
            astore 9 /* headers */
        start local 9 // io.netty.handler.codec.http2.Http2Headers headers
        21: .line 74
            aload 2 /* listener */
            aload 0 /* ctx */
            iload 4 /* streamId */
            aload 9 /* headers */
            iconst_0
            iconst_1
            invokeinterface io.netty.handler.codec.http2.Http2FrameListener.onHeadersRead:(Lio/netty/channel/ChannelHandlerContext;ILio/netty/handler/codec/http2/Http2Headers;IZ)V
        end local 9 // io.netty.handler.codec.http2.Http2Headers headers
        22: .line 76
      StackMap locals:
      StackMap stack:
            aload 5 /* stream */
            invokeinterface io.netty.handler.codec.http2.Http2Stream.closeRemoteSide:()Lio/netty/handler/codec/http2/Http2Stream;
            pop
        end local 8 // boolean hasTrailers
        end local 7 // boolean hasContent
        end local 6 // io.netty.handler.codec.http2.Http2Headers messageHeaders
        end local 5 // io.netty.handler.codec.http2.Http2Stream stream
        end local 4 // int streamId
        23: .line 77
            goto 27
      StackMap locals: io.netty.channel.ChannelHandlerContext io.netty.handler.codec.http2.Http2Connection io.netty.handler.codec.http2.Http2FrameListener io.netty.handler.codec.http.FullHttpMessage
      StackMap stack: java.lang.Throwable
        24: astore 10
        25: .line 78
            aload 3 /* message */
            invokeinterface io.netty.handler.codec.http.FullHttpMessage.release:()Z
            pop
        26: .line 79
            aload 10
            athrow
        27: .line 78
      StackMap locals:
      StackMap stack:
            aload 3 /* message */
            invokeinterface io.netty.handler.codec.http.FullHttpMessage.release:()Z
            pop
        28: .line 80
            return
        end local 3 // io.netty.handler.codec.http.FullHttpMessage message
        end local 2 // io.netty.handler.codec.http2.Http2FrameListener listener
        end local 1 // io.netty.handler.codec.http2.Http2Connection connection
        end local 0 // io.netty.channel.ChannelHandlerContext ctx
      LocalVariableTable:
        Start  End  Slot            Name  Signature
            0   29     0             ctx  Lio/netty/channel/ChannelHandlerContext;
            0   29     1      connection  Lio/netty/handler/codec/http2/Http2Connection;
            0   29     2        listener  Lio/netty/handler/codec/http2/Http2FrameListener;
            0   29     3         message  Lio/netty/handler/codec/http/FullHttpMessage;
            1   23     4        streamId  I
            2   23     5          stream  Lio/netty/handler/codec/http2/Http2Stream;
            6   23     6  messageHeaders  Lio/netty/handler/codec/http2/Http2Headers;
            7   23     7      hasContent  Z
           10   23     8     hasTrailers  Z
           21   22     9         headers  Lio/netty/handler/codec/http2/Http2Headers;
      Exception table:
        from    to  target  type
           0    24      24  any
    Exceptions:
      throws io.netty.handler.codec.http2.Http2Exception
    MethodParameters:
            Name  Flags
      ctx         
      connection  
      listener    
      message     
}
SourceFile: "InboundHttpToHttp2Adapter.java"
InnerClasses:
  public abstract Endpoint = io.netty.handler.codec.http2.Http2Connection$Endpoint of io.netty.handler.codec.http2.Http2Connection
  public final ExtensionHeaderNames = io.netty.handler.codec.http2.HttpConversionUtil$ExtensionHeaderNames of io.netty.handler.codec.http2.HttpConversionUtil