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.ReplayingDecoder<S> extends io.netty.handler.codec.ByteToMessageDecoder
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: io.netty.handler.codec.ReplayingDecoder
  super_class: io.netty.handler.codec.ByteToMessageDecoder
{
  static final io.netty.util.Signal REPLAY;
    descriptor: Lio/netty/util/Signal;
    flags: (0x0018) ACC_STATIC, ACC_FINAL

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

  private S state;
    descriptor: Ljava/lang/Object;
    flags: (0x0002) ACC_PRIVATE
    Signature: TS;

  private int checkpoint;
    descriptor: I
    flags: (0x0002) ACC_PRIVATE

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=0, args_size=0
         0: .line 270
            ldc Lio/netty/handler/codec/ReplayingDecoder;
            ldc "REPLAY"
            invokestatic io.netty.util.Signal.valueOf:(Ljava/lang/Class;Ljava/lang/String;)Lio/netty/util/Signal;
            putstatic io.netty.handler.codec.ReplayingDecoder.REPLAY:Lio/netty/util/Signal;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  protected void <init>();
    descriptor: ()V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.ReplayingDecoder this
         0: .line 280
            aload 0 /* this */
            aconst_null
            invokespecial io.netty.handler.codec.ReplayingDecoder.<init>:(Ljava/lang/Object;)V
         1: .line 281
            return
        end local 0 // io.netty.handler.codec.ReplayingDecoder this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lio/netty/handler/codec/ReplayingDecoder<TS;>;

  protected void <init>();
    descriptor: (Ljava/lang/Object;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=3, locals=2, args_size=2
        start local 0 // io.netty.handler.codec.ReplayingDecoder this
        start local 1 // java.lang.Object initialState
         0: .line 286
            aload 0 /* this */
            invokespecial io.netty.handler.codec.ByteToMessageDecoder.<init>:()V
         1: .line 272
            aload 0 /* this */
            new io.netty.handler.codec.ReplayingDecoderByteBuf
            dup
            invokespecial io.netty.handler.codec.ReplayingDecoderByteBuf.<init>:()V
            putfield io.netty.handler.codec.ReplayingDecoder.replayable:Lio/netty/handler/codec/ReplayingDecoderByteBuf;
         2: .line 274
            aload 0 /* this */
            iconst_m1
            putfield io.netty.handler.codec.ReplayingDecoder.checkpoint:I
         3: .line 287
            aload 0 /* this */
            aload 1 /* initialState */
            putfield io.netty.handler.codec.ReplayingDecoder.state:Ljava/lang/Object;
         4: .line 288
            return
        end local 1 // java.lang.Object initialState
        end local 0 // io.netty.handler.codec.ReplayingDecoder this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    5     0          this  Lio/netty/handler/codec/ReplayingDecoder<TS;>;
            0    5     1  initialState  TS;
    Signature: (TS;)V
    MethodParameters:
              Name  Flags
      initialState  

  protected void checkpoint();
    descriptor: ()V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.ReplayingDecoder this
         0: .line 294
            aload 0 /* this */
            aload 0 /* this */
            invokevirtual io.netty.handler.codec.ReplayingDecoder.internalBuffer:()Lio/netty/buffer/ByteBuf;
            invokevirtual io.netty.buffer.ByteBuf.readerIndex:()I
            putfield io.netty.handler.codec.ReplayingDecoder.checkpoint:I
         1: .line 295
            return
        end local 0 // io.netty.handler.codec.ReplayingDecoder this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lio/netty/handler/codec/ReplayingDecoder<TS;>;

  protected void checkpoint();
    descriptor: (Ljava/lang/Object;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.handler.codec.ReplayingDecoder this
        start local 1 // java.lang.Object state
         0: .line 302
            aload 0 /* this */
            invokevirtual io.netty.handler.codec.ReplayingDecoder.checkpoint:()V
         1: .line 303
            aload 0 /* this */
            aload 1 /* state */
            invokevirtual io.netty.handler.codec.ReplayingDecoder.state:(Ljava/lang/Object;)Ljava/lang/Object;
            pop
         2: .line 304
            return
        end local 1 // java.lang.Object state
        end local 0 // io.netty.handler.codec.ReplayingDecoder this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    3     0   this  Lio/netty/handler/codec/ReplayingDecoder<TS;>;
            0    3     1  state  TS;
    Signature: (TS;)V
    MethodParameters:
       Name  Flags
      state  

  protected S state();
    descriptor: ()Ljava/lang/Object;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.ReplayingDecoder this
         0: .line 311
            aload 0 /* this */
            getfield io.netty.handler.codec.ReplayingDecoder.state:Ljava/lang/Object;
            areturn
        end local 0 // io.netty.handler.codec.ReplayingDecoder this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/ReplayingDecoder<TS;>;
    Signature: ()TS;

  protected S state();
    descriptor: (Ljava/lang/Object;)Ljava/lang/Object;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // io.netty.handler.codec.ReplayingDecoder this
        start local 1 // java.lang.Object newState
         0: .line 319
            aload 0 /* this */
            getfield io.netty.handler.codec.ReplayingDecoder.state:Ljava/lang/Object;
            astore 2 /* oldState */
        start local 2 // java.lang.Object oldState
         1: .line 320
            aload 0 /* this */
            aload 1 /* newState */
            putfield io.netty.handler.codec.ReplayingDecoder.state:Ljava/lang/Object;
         2: .line 321
            aload 2 /* oldState */
            areturn
        end local 2 // java.lang.Object oldState
        end local 1 // java.lang.Object newState
        end local 0 // io.netty.handler.codec.ReplayingDecoder this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    3     0      this  Lio/netty/handler/codec/ReplayingDecoder<TS;>;
            0    3     1  newState  TS;
            1    3     2  oldState  TS;
    Signature: (TS;)TS;
    MethodParameters:
          Name  Flags
      newState  

  final void channelInputClosed(io.netty.channel.ChannelHandlerContext, java.util.List<java.lang.Object>);
    descriptor: (Lio/netty/channel/ChannelHandlerContext;Ljava/util/List;)V
    flags: (0x0010) ACC_FINAL
    Code:
      stack=4, locals=4, args_size=3
        start local 0 // io.netty.handler.codec.ReplayingDecoder this
        start local 1 // io.netty.channel.ChannelHandlerContext ctx
        start local 2 // java.util.List out
         0: .line 327
            aload 0 /* this */
            getfield io.netty.handler.codec.ReplayingDecoder.replayable:Lio/netty/handler/codec/ReplayingDecoderByteBuf;
            invokevirtual io.netty.handler.codec.ReplayingDecoderByteBuf.terminate:()V
         1: .line 328
            aload 0 /* this */
            getfield io.netty.handler.codec.ReplayingDecoder.cumulation:Lio/netty/buffer/ByteBuf;
            ifnull 4
         2: .line 329
            aload 0 /* this */
            aload 1 /* ctx */
            aload 0 /* this */
            invokevirtual io.netty.handler.codec.ReplayingDecoder.internalBuffer:()Lio/netty/buffer/ByteBuf;
            aload 2 /* out */
            invokevirtual io.netty.handler.codec.ReplayingDecoder.callDecode:(Lio/netty/channel/ChannelHandlerContext;Lio/netty/buffer/ByteBuf;Ljava/util/List;)V
         3: .line 330
            goto 5
         4: .line 331
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.handler.codec.ReplayingDecoder.replayable:Lio/netty/handler/codec/ReplayingDecoderByteBuf;
            getstatic io.netty.buffer.Unpooled.EMPTY_BUFFER:Lio/netty/buffer/ByteBuf;
            invokevirtual io.netty.handler.codec.ReplayingDecoderByteBuf.setCumulation:(Lio/netty/buffer/ByteBuf;)V
         5: .line 333
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 1 /* ctx */
            aload 0 /* this */
            getfield io.netty.handler.codec.ReplayingDecoder.replayable:Lio/netty/handler/codec/ReplayingDecoderByteBuf;
            aload 2 /* out */
            invokevirtual io.netty.handler.codec.ReplayingDecoder.decodeLast:(Lio/netty/channel/ChannelHandlerContext;Lio/netty/buffer/ByteBuf;Ljava/util/List;)V
         6: .line 334
            goto 9
      StackMap locals:
      StackMap stack: io.netty.util.Signal
         7: astore 3 /* replay */
        start local 3 // io.netty.util.Signal replay
         8: .line 336
            aload 3 /* replay */
            getstatic io.netty.handler.codec.ReplayingDecoder.REPLAY:Lio/netty/util/Signal;
            invokevirtual io.netty.util.Signal.expect:(Lio/netty/util/Signal;)V
        end local 3 // io.netty.util.Signal replay
         9: .line 338
      StackMap locals:
      StackMap stack:
            return
        end local 2 // java.util.List out
        end local 1 // io.netty.channel.ChannelHandlerContext ctx
        end local 0 // io.netty.handler.codec.ReplayingDecoder this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0   10     0    this  Lio/netty/handler/codec/ReplayingDecoder<TS;>;
            0   10     1     ctx  Lio/netty/channel/ChannelHandlerContext;
            0   10     2     out  Ljava/util/List<Ljava/lang/Object;>;
            8    9     3  replay  Lio/netty/util/Signal;
      Exception table:
        from    to  target  type
           0     6       7  Class io.netty.util.Signal
    Exceptions:
      throws java.lang.Exception
    Signature: (Lio/netty/channel/ChannelHandlerContext;Ljava/util/List<Ljava/lang/Object;>;)V
    MethodParameters:
      Name  Flags
      ctx   
      out   

  protected void callDecode(io.netty.channel.ChannelHandlerContext, io.netty.buffer.ByteBuf, java.util.List<java.lang.Object>);
    descriptor: (Lio/netty/channel/ChannelHandlerContext;Lio/netty/buffer/ByteBuf;Ljava/util/List;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=5, locals=10, args_size=4
        start local 0 // io.netty.handler.codec.ReplayingDecoder this
        start local 1 // io.netty.channel.ChannelHandlerContext ctx
        start local 2 // io.netty.buffer.ByteBuf in
        start local 3 // java.util.List out
         0: .line 342
            aload 0 /* this */
            getfield io.netty.handler.codec.ReplayingDecoder.replayable:Lio/netty/handler/codec/ReplayingDecoderByteBuf;
            aload 2 /* in */
            invokevirtual io.netty.handler.codec.ReplayingDecoderByteBuf.setCumulation:(Lio/netty/buffer/ByteBuf;)V
         1: .line 344
            goto 38
         2: .line 345
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            aload 2 /* in */
            invokevirtual io.netty.buffer.ByteBuf.readerIndex:()I
            dup_x1
            putfield io.netty.handler.codec.ReplayingDecoder.checkpoint:I
            istore 4 /* oldReaderIndex */
        start local 4 // int oldReaderIndex
         3: .line 346
            aload 3 /* out */
            invokeinterface java.util.List.size:()I
            istore 5 /* outSize */
        start local 5 // int outSize
         4: .line 348
            iload 5 /* outSize */
            ifle 10
         5: .line 349
            aload 1 /* ctx */
            aload 3 /* out */
            iload 5 /* outSize */
            invokestatic io.netty.handler.codec.ReplayingDecoder.fireChannelRead:(Lio/netty/channel/ChannelHandlerContext;Ljava/util/List;I)V
         6: .line 350
            aload 3 /* out */
            invokeinterface java.util.List.clear:()V
         7: .line 357
            aload 1 /* ctx */
            invokeinterface io.netty.channel.ChannelHandlerContext.isRemoved:()Z
            ifeq 9
         8: .line 358
            goto 44
         9: .line 360
      StackMap locals: int int
      StackMap stack:
            iconst_0
            istore 5 /* outSize */
        10: .line 363
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.handler.codec.ReplayingDecoder.state:Ljava/lang/Object;
            astore 6 /* oldState */
        start local 6 // java.lang.Object oldState
        11: .line 364
            aload 2 /* in */
            invokevirtual io.netty.buffer.ByteBuf.readableBytes:()I
            istore 7 /* oldInputLength */
        start local 7 // int oldInputLength
        12: .line 366
            aload 0 /* this */
            aload 1 /* ctx */
            aload 0 /* this */
            getfield io.netty.handler.codec.ReplayingDecoder.replayable:Lio/netty/handler/codec/ReplayingDecoderByteBuf;
            aload 3 /* out */
            invokevirtual io.netty.handler.codec.ReplayingDecoder.decodeRemovalReentryProtection:(Lio/netty/channel/ChannelHandlerContext;Lio/netty/buffer/ByteBuf;Ljava/util/List;)V
        13: .line 372
            aload 1 /* ctx */
            invokeinterface io.netty.channel.ChannelHandlerContext.isRemoved:()Z
            ifeq 15
        14: .line 373
            goto 44
        15: .line 376
      StackMap locals: java.lang.Object int
      StackMap stack:
            iload 5 /* outSize */
            aload 3 /* out */
            invokeinterface java.util.List.size:()I
            if_icmpne 30
        16: .line 377
            iload 7 /* oldInputLength */
            aload 2 /* in */
            invokevirtual io.netty.buffer.ByteBuf.readableBytes:()I
            if_icmpne 38
            aload 6 /* oldState */
            aload 0 /* this */
            getfield io.netty.handler.codec.ReplayingDecoder.state:Ljava/lang/Object;
            if_acmpne 38
        17: .line 378
            new io.netty.handler.codec.DecoderException
            dup
        18: .line 379
            new java.lang.StringBuilder
            dup
            aload 0 /* this */
            invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
            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 ".decode() must consume the inbound "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
        19: .line 380
            ldc "data or change its state if it did not decode anything."
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
        20: .line 379
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
        21: .line 378
            invokespecial io.netty.handler.codec.DecoderException.<init>:(Ljava/lang/String;)V
            athrow
        22: .line 387
      StackMap locals:
      StackMap stack: io.netty.util.Signal
            astore 8 /* replay */
        start local 8 // io.netty.util.Signal replay
        23: .line 388
            aload 8 /* replay */
            getstatic io.netty.handler.codec.ReplayingDecoder.REPLAY:Lio/netty/util/Signal;
            invokevirtual io.netty.util.Signal.expect:(Lio/netty/util/Signal;)V
        24: .line 394
            aload 1 /* ctx */
            invokeinterface io.netty.channel.ChannelHandlerContext.isRemoved:()Z
            ifeq 26
        25: .line 395
            goto 44
        26: .line 399
      StackMap locals: io.netty.util.Signal
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.handler.codec.ReplayingDecoder.checkpoint:I
            istore 9 /* checkpoint */
        start local 9 // int checkpoint
        27: .line 400
            iload 9 /* checkpoint */
            iflt 44
        28: .line 401
            aload 2 /* in */
            iload 9 /* checkpoint */
            invokevirtual io.netty.buffer.ByteBuf.readerIndex:(I)Lio/netty/buffer/ByteBuf;
            pop
        29: .line 406
            goto 44
        end local 9 // int checkpoint
        end local 8 // io.netty.util.Signal replay
        30: .line 409
      StackMap locals:
      StackMap stack:
            iload 4 /* oldReaderIndex */
            aload 2 /* in */
            invokevirtual io.netty.buffer.ByteBuf.readerIndex:()I
            if_icmpne 36
            aload 6 /* oldState */
            aload 0 /* this */
            getfield io.netty.handler.codec.ReplayingDecoder.state:Ljava/lang/Object;
            if_acmpne 36
        31: .line 410
            new io.netty.handler.codec.DecoderException
            dup
        32: .line 411
            new java.lang.StringBuilder
            dup
            aload 0 /* this */
            invokevirtual java.lang.Object.getClass:()Ljava/lang/Class;
            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 ".decode() method must consume the inbound data "
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
        33: .line 412
            ldc "or change its state if it decoded something."
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
        34: .line 411
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
        35: .line 410
            invokespecial io.netty.handler.codec.DecoderException.<init>:(Ljava/lang/String;)V
            athrow
        36: .line 414
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            invokevirtual io.netty.handler.codec.ReplayingDecoder.isSingleDecode:()Z
            ifeq 38
        37: .line 415
            goto 44
        end local 7 // int oldInputLength
        end local 6 // java.lang.Object oldState
        end local 5 // int outSize
        end local 4 // int oldReaderIndex
        38: .line 344
      StackMap locals: io.netty.handler.codec.ReplayingDecoder io.netty.channel.ChannelHandlerContext io.netty.buffer.ByteBuf java.util.List
      StackMap stack:
            aload 2 /* in */
            invokevirtual io.netty.buffer.ByteBuf.isReadable:()Z
            ifne 2
        39: .line 418
            goto 44
      StackMap locals:
      StackMap stack: io.netty.handler.codec.DecoderException
        40: astore 4 /* e */
        start local 4 // io.netty.handler.codec.DecoderException e
        41: .line 419
            aload 4 /* e */
            athrow
        end local 4 // io.netty.handler.codec.DecoderException e
        42: .line 420
      StackMap locals:
      StackMap stack: java.lang.Exception
            astore 4 /* cause */
        start local 4 // java.lang.Exception cause
        43: .line 421
            new io.netty.handler.codec.DecoderException
            dup
            aload 4 /* cause */
            invokespecial io.netty.handler.codec.DecoderException.<init>:(Ljava/lang/Throwable;)V
            athrow
        end local 4 // java.lang.Exception cause
        44: .line 423
      StackMap locals:
      StackMap stack:
            return
        end local 3 // java.util.List out
        end local 2 // io.netty.buffer.ByteBuf in
        end local 1 // io.netty.channel.ChannelHandlerContext ctx
        end local 0 // io.netty.handler.codec.ReplayingDecoder this
      LocalVariableTable:
        Start  End  Slot            Name  Signature
            0   45     0            this  Lio/netty/handler/codec/ReplayingDecoder<TS;>;
            0   45     1             ctx  Lio/netty/channel/ChannelHandlerContext;
            0   45     2              in  Lio/netty/buffer/ByteBuf;
            0   45     3             out  Ljava/util/List<Ljava/lang/Object;>;
            3   38     4  oldReaderIndex  I
            4   38     5         outSize  I
           11   38     6        oldState  TS;
           12   38     7  oldInputLength  I
           23   30     8          replay  Lio/netty/util/Signal;
           27   30     9      checkpoint  I
           41   42     4               e  Lio/netty/handler/codec/DecoderException;
           43   44     4           cause  Ljava/lang/Exception;
      Exception table:
        from    to  target  type
          12    14      22  Class io.netty.util.Signal
          15    22      22  Class io.netty.util.Signal
           1    39      40  Class io.netty.handler.codec.DecoderException
           1    39      42  Class java.lang.Exception
    Signature: (Lio/netty/channel/ChannelHandlerContext;Lio/netty/buffer/ByteBuf;Ljava/util/List<Ljava/lang/Object;>;)V
    MethodParameters:
      Name  Flags
      ctx   
      in    
      out   
}
Signature: <S:Ljava/lang/Object;>Lio/netty/handler/codec/ByteToMessageDecoder;
SourceFile: "ReplayingDecoder.java"