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 abstract class io.netty.handler.codec.http2.Http2ChannelDuplexHandler extends io.netty.channel.ChannelDuplexHandler
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: io.netty.handler.codec.http2.Http2ChannelDuplexHandler
  super_class: io.netty.channel.ChannelDuplexHandler
{
  private volatile io.netty.handler.codec.http2.Http2FrameCodec frameCodec;
    descriptor: Lio/netty/handler/codec/http2/Http2FrameCodec;
    flags: (0x0042) ACC_PRIVATE, ACC_VOLATILE

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.http2.Http2ChannelDuplexHandler this
         0: .line 36
            aload 0 /* this */
            invokespecial io.netty.channel.ChannelDuplexHandler.<init>:()V
            return
        end local 0 // io.netty.handler.codec.http2.Http2ChannelDuplexHandler this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/http2/Http2ChannelDuplexHandler;

  public final void handlerAdded(io.netty.channel.ChannelHandlerContext);
    descriptor: (Lio/netty/channel/ChannelHandlerContext;)V
    flags: (0x0011) ACC_PUBLIC, ACC_FINAL
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.handler.codec.http2.Http2ChannelDuplexHandler this
        start local 1 // io.netty.channel.ChannelHandlerContext ctx
         0: .line 42
            aload 0 /* this */
            aload 1 /* ctx */
            invokestatic io.netty.handler.codec.http2.Http2ChannelDuplexHandler.requireHttp2FrameCodec:(Lio/netty/channel/ChannelHandlerContext;)Lio/netty/handler/codec/http2/Http2FrameCodec;
            putfield io.netty.handler.codec.http2.Http2ChannelDuplexHandler.frameCodec:Lio/netty/handler/codec/http2/Http2FrameCodec;
         1: .line 43
            aload 0 /* this */
            aload 1 /* ctx */
            invokevirtual io.netty.handler.codec.http2.Http2ChannelDuplexHandler.handlerAdded0:(Lio/netty/channel/ChannelHandlerContext;)V
         2: .line 44
            return
        end local 1 // io.netty.channel.ChannelHandlerContext ctx
        end local 0 // io.netty.handler.codec.http2.Http2ChannelDuplexHandler this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lio/netty/handler/codec/http2/Http2ChannelDuplexHandler;
            0    3     1   ctx  Lio/netty/channel/ChannelHandlerContext;
    Exceptions:
      throws java.lang.Exception
    MethodParameters:
      Name  Flags
      ctx   

  protected void handlerAdded0(io.netty.channel.ChannelHandlerContext);
    descriptor: (Lio/netty/channel/ChannelHandlerContext;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=0, locals=2, args_size=2
        start local 0 // io.netty.handler.codec.http2.Http2ChannelDuplexHandler this
        start local 1 // io.netty.channel.ChannelHandlerContext ctx
         0: .line 48
            return
        end local 1 // io.netty.channel.ChannelHandlerContext ctx
        end local 0 // io.netty.handler.codec.http2.Http2ChannelDuplexHandler this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/http2/Http2ChannelDuplexHandler;
            0    1     1   ctx  Lio/netty/channel/ChannelHandlerContext;
    Exceptions:
      throws java.lang.Exception
    MethodParameters:
      Name  Flags
      ctx   

  public final void handlerRemoved(io.netty.channel.ChannelHandlerContext);
    descriptor: (Lio/netty/channel/ChannelHandlerContext;)V
    flags: (0x0011) ACC_PUBLIC, ACC_FINAL
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // io.netty.handler.codec.http2.Http2ChannelDuplexHandler this
        start local 1 // io.netty.channel.ChannelHandlerContext ctx
         0: .line 53
            aload 0 /* this */
            aload 1 /* ctx */
            invokevirtual io.netty.handler.codec.http2.Http2ChannelDuplexHandler.handlerRemoved0:(Lio/netty/channel/ChannelHandlerContext;)V
         1: .line 54
            goto 5
      StackMap locals:
      StackMap stack: java.lang.Throwable
         2: astore 2
         3: .line 55
            aload 0 /* this */
            aconst_null
            putfield io.netty.handler.codec.http2.Http2ChannelDuplexHandler.frameCodec:Lio/netty/handler/codec/http2/Http2FrameCodec;
         4: .line 56
            aload 2
            athrow
         5: .line 55
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aconst_null
            putfield io.netty.handler.codec.http2.Http2ChannelDuplexHandler.frameCodec:Lio/netty/handler/codec/http2/Http2FrameCodec;
         6: .line 57
            return
        end local 1 // io.netty.channel.ChannelHandlerContext ctx
        end local 0 // io.netty.handler.codec.http2.Http2ChannelDuplexHandler this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    7     0  this  Lio/netty/handler/codec/http2/Http2ChannelDuplexHandler;
            0    7     1   ctx  Lio/netty/channel/ChannelHandlerContext;
      Exception table:
        from    to  target  type
           0     2       2  any
    Exceptions:
      throws java.lang.Exception
    MethodParameters:
      Name  Flags
      ctx   

  protected void handlerRemoved0(io.netty.channel.ChannelHandlerContext);
    descriptor: (Lio/netty/channel/ChannelHandlerContext;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=0, locals=2, args_size=2
        start local 0 // io.netty.handler.codec.http2.Http2ChannelDuplexHandler this
        start local 1 // io.netty.channel.ChannelHandlerContext ctx
         0: .line 61
            return
        end local 1 // io.netty.channel.ChannelHandlerContext ctx
        end local 0 // io.netty.handler.codec.http2.Http2ChannelDuplexHandler this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/http2/Http2ChannelDuplexHandler;
            0    1     1   ctx  Lio/netty/channel/ChannelHandlerContext;
    Exceptions:
      throws java.lang.Exception
    MethodParameters:
      Name  Flags
      ctx   

  public final io.netty.handler.codec.http2.Http2FrameStream newStream();
    descriptor: ()Lio/netty/handler/codec/http2/Http2FrameStream;
    flags: (0x0011) ACC_PUBLIC, ACC_FINAL
    Code:
      stack=5, locals=2, args_size=1
        start local 0 // io.netty.handler.codec.http2.Http2ChannelDuplexHandler this
         0: .line 69
            aload 0 /* this */
            getfield io.netty.handler.codec.http2.Http2ChannelDuplexHandler.frameCodec:Lio/netty/handler/codec/http2/Http2FrameCodec;
            astore 1 /* codec */
        start local 1 // io.netty.handler.codec.http2.Http2FrameCodec codec
         1: .line 70
            aload 1 /* codec */
            ifnonnull 5
         2: .line 71
            new java.lang.IllegalStateException
            dup
            new java.lang.StringBuilder
            dup
            ldc Lio/netty/handler/codec/http2/Http2FrameCodec;
            invokestatic io.netty.util.internal.StringUtil.simpleClassName:(Ljava/lang/Class;)Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            ldc " not found."
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
         3: .line 72
            ldc " Has the handler been added to a pipeline?"
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
         4: .line 71
            invokespecial java.lang.IllegalStateException.<init>:(Ljava/lang/String;)V
            athrow
         5: .line 74
      StackMap locals: io.netty.handler.codec.http2.Http2FrameCodec
      StackMap stack:
            aload 1 /* codec */
            invokevirtual io.netty.handler.codec.http2.Http2FrameCodec.newStream:()Lio/netty/handler/codec/http2/Http2FrameCodec$DefaultHttp2FrameStream;
            areturn
        end local 1 // io.netty.handler.codec.http2.Http2FrameCodec codec
        end local 0 // io.netty.handler.codec.http2.Http2ChannelDuplexHandler this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    6     0   this  Lio/netty/handler/codec/http2/Http2ChannelDuplexHandler;
            1    6     1  codec  Lio/netty/handler/codec/http2/Http2FrameCodec;

  protected final void forEachActiveStream(io.netty.handler.codec.http2.Http2FrameStreamVisitor);
    descriptor: (Lio/netty/handler/codec/http2/Http2FrameStreamVisitor;)V
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.handler.codec.http2.Http2ChannelDuplexHandler this
        start local 1 // io.netty.handler.codec.http2.Http2FrameStreamVisitor streamVisitor
         0: .line 83
            aload 0 /* this */
            getfield io.netty.handler.codec.http2.Http2ChannelDuplexHandler.frameCodec:Lio/netty/handler/codec/http2/Http2FrameCodec;
            aload 1 /* streamVisitor */
            invokevirtual io.netty.handler.codec.http2.Http2FrameCodec.forEachActiveStream:(Lio/netty/handler/codec/http2/Http2FrameStreamVisitor;)V
         1: .line 84
            return
        end local 1 // io.netty.handler.codec.http2.Http2FrameStreamVisitor streamVisitor
        end local 0 // io.netty.handler.codec.http2.Http2ChannelDuplexHandler this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    2     0           this  Lio/netty/handler/codec/http2/Http2ChannelDuplexHandler;
            0    2     1  streamVisitor  Lio/netty/handler/codec/http2/Http2FrameStreamVisitor;
    Exceptions:
      throws io.netty.handler.codec.http2.Http2Exception
    MethodParameters:
               Name  Flags
      streamVisitor  

  private static io.netty.handler.codec.http2.Http2FrameCodec requireHttp2FrameCodec(io.netty.channel.ChannelHandlerContext);
    descriptor: (Lio/netty/channel/ChannelHandlerContext;)Lio/netty/handler/codec/http2/Http2FrameCodec;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=5, locals=2, args_size=1
        start local 0 // io.netty.channel.ChannelHandlerContext ctx
         0: .line 87
            aload 0 /* ctx */
            invokeinterface io.netty.channel.ChannelHandlerContext.pipeline:()Lio/netty/channel/ChannelPipeline;
            ldc Lio/netty/handler/codec/http2/Http2FrameCodec;
            invokeinterface io.netty.channel.ChannelPipeline.context:(Ljava/lang/Class;)Lio/netty/channel/ChannelHandlerContext;
            astore 1 /* frameCodecCtx */
        start local 1 // io.netty.channel.ChannelHandlerContext frameCodecCtx
         1: .line 88
            aload 1 /* frameCodecCtx */
            ifnonnull 5
         2: .line 89
            new java.lang.IllegalArgumentException
            dup
            new java.lang.StringBuilder
            dup
            ldc Lio/netty/handler/codec/http2/Http2FrameCodec;
            invokevirtual java.lang.Class.getSimpleName:()Ljava/lang/String;
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
         3: .line 90
            ldc " was not found in the channel pipeline."
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
         4: .line 89
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         5: .line 92
      StackMap locals: io.netty.channel.ChannelHandlerContext
      StackMap stack:
            aload 1 /* frameCodecCtx */
            invokeinterface io.netty.channel.ChannelHandlerContext.handler:()Lio/netty/channel/ChannelHandler;
            checkcast io.netty.handler.codec.http2.Http2FrameCodec
            areturn
        end local 1 // io.netty.channel.ChannelHandlerContext frameCodecCtx
        end local 0 // io.netty.channel.ChannelHandlerContext ctx
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    6     0            ctx  Lio/netty/channel/ChannelHandlerContext;
            1    6     1  frameCodecCtx  Lio/netty/channel/ChannelHandlerContext;
    MethodParameters:
      Name  Flags
      ctx   
}
SourceFile: "Http2ChannelDuplexHandler.java"
InnerClasses:
  DefaultHttp2FrameStream = io.netty.handler.codec.http2.Http2FrameCodec$DefaultHttp2FrameStream of io.netty.handler.codec.http2.Http2FrameCodec