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 final class io.netty.handler.codec.http2.Http2CodecUtil
  minor version: 0
  major version: 59
  flags: flags: (0x0031) ACC_PUBLIC, ACC_FINAL, ACC_SUPER
  this_class: io.netty.handler.codec.http2.Http2CodecUtil
  super_class: java.lang.Object
{
  public static final int CONNECTION_STREAM_ID;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 0

  public static final int HTTP_UPGRADE_STREAM_ID;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  public static final java.lang.CharSequence HTTP_UPGRADE_SETTINGS_HEADER;
    descriptor: Ljava/lang/CharSequence;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final java.lang.CharSequence HTTP_UPGRADE_PROTOCOL_NAME;
    descriptor: Ljava/lang/CharSequence;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final java.lang.CharSequence TLS_UPGRADE_PROTOCOL_NAME;
    descriptor: Ljava/lang/CharSequence;
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  public static final int PING_FRAME_PAYLOAD_LENGTH;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 8

  public static final short MAX_UNSIGNED_BYTE;
    descriptor: S
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 255

  public static final int MAX_PADDING;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 256

  public static final long MAX_UNSIGNED_INT;
    descriptor: J
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 4294967295

  public static final int FRAME_HEADER_LENGTH;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 9

  public static final int SETTING_ENTRY_LENGTH;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 6

  public static final int PRIORITY_ENTRY_LENGTH;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 5

  public static final int INT_FIELD_LENGTH;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 4

  public static final short MAX_WEIGHT;
    descriptor: S
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 256

  public static final short MIN_WEIGHT;
    descriptor: S
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  private static final io.netty.buffer.ByteBuf CONNECTION_PREFACE;
    descriptor: Lio/netty/buffer/ByteBuf;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private static final io.netty.buffer.ByteBuf EMPTY_PING;
    descriptor: Lio/netty/buffer/ByteBuf;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private static final int MAX_PADDING_LENGTH_LENGTH;
    descriptor: I
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  public static final int DATA_FRAME_HEADER_LENGTH;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 10

  public static final int HEADERS_FRAME_HEADER_LENGTH;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 15

  public static final int PRIORITY_FRAME_LENGTH;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 14

  public static final int RST_STREAM_FRAME_LENGTH;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 13

  public static final int PUSH_PROMISE_FRAME_HEADER_LENGTH;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 14

  public static final int GO_AWAY_FRAME_HEADER_LENGTH;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 17

  public static final int WINDOW_UPDATE_FRAME_LENGTH;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 13

  public static final int CONTINUATION_FRAME_HEADER_LENGTH;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 10

  public static final char SETTINGS_HEADER_TABLE_SIZE;
    descriptor: C
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 1

  public static final char SETTINGS_ENABLE_PUSH;
    descriptor: C
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 2

  public static final char SETTINGS_MAX_CONCURRENT_STREAMS;
    descriptor: C
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 3

  public static final char SETTINGS_INITIAL_WINDOW_SIZE;
    descriptor: C
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 4

  public static final char SETTINGS_MAX_FRAME_SIZE;
    descriptor: C
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 5

  public static final char SETTINGS_MAX_HEADER_LIST_SIZE;
    descriptor: C
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 6

  public static final int NUM_STANDARD_SETTINGS;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 6

  public static final long MAX_HEADER_TABLE_SIZE;
    descriptor: J
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 4294967295

  public static final long MAX_CONCURRENT_STREAMS;
    descriptor: J
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 4294967295

  public static final int MAX_INITIAL_WINDOW_SIZE;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 2147483647

  public static final int MAX_FRAME_SIZE_LOWER_BOUND;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 16384

  public static final int MAX_FRAME_SIZE_UPPER_BOUND;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 16777215

  public static final long MAX_HEADER_LIST_SIZE;
    descriptor: J
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 4294967295

  public static final long MIN_HEADER_TABLE_SIZE;
    descriptor: J
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 0

  public static final long MIN_CONCURRENT_STREAMS;
    descriptor: J
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 0

  public static final int MIN_INITIAL_WINDOW_SIZE;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 0

  public static final long MIN_HEADER_LIST_SIZE;
    descriptor: J
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 0

  public static final int DEFAULT_WINDOW_SIZE;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 65535

  public static final short DEFAULT_PRIORITY_WEIGHT;
    descriptor: S
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 16

  public static final int DEFAULT_HEADER_TABLE_SIZE;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 4096

  public static final long DEFAULT_HEADER_LIST_SIZE;
    descriptor: J
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 8192

  public static final int DEFAULT_MAX_FRAME_SIZE;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 16384

  public static final int SMALLEST_MAX_CONCURRENT_STREAMS;
    descriptor: I
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL
    ConstantValue: 100

  static final int DEFAULT_MAX_RESERVED_STREAMS;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    ConstantValue: 100

  static final int DEFAULT_MIN_ALLOCATION_CHUNK;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    ConstantValue: 1024

  static final int DEFAULT_INITIAL_HUFFMAN_DECODE_CAPACITY;
    descriptor: I
    flags: (0x0018) ACC_STATIC, ACC_FINAL
    ConstantValue: 32

  public static final long DEFAULT_GRACEFUL_SHUTDOWN_TIMEOUT_MILLIS;
    descriptor: J
    flags: (0x0019) ACC_PUBLIC, ACC_STATIC, ACC_FINAL

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=4, locals=0, args_size=0
         0: .line 48
            ldc "HTTP2-Settings"
            invokestatic io.netty.util.AsciiString.cached:(Ljava/lang/String;)Lio/netty/util/AsciiString;
            putstatic io.netty.handler.codec.http2.Http2CodecUtil.HTTP_UPGRADE_SETTINGS_HEADER:Ljava/lang/CharSequence;
         1: .line 49
            ldc "h2c"
            putstatic io.netty.handler.codec.http2.Http2CodecUtil.HTTP_UPGRADE_PROTOCOL_NAME:Ljava/lang/CharSequence;
         2: .line 50
            ldc "h2"
            putstatic io.netty.handler.codec.http2.Http2CodecUtil.TLS_UPGRADE_PROTOCOL_NAME:Ljava/lang/CharSequence;
         3: .line 68
            bipush 24
            invokestatic io.netty.buffer.Unpooled.directBuffer:(I)Lio/netty/buffer/ByteBuf;
            ldc "PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n"
            getstatic io.netty.util.CharsetUtil.UTF_8:Ljava/nio/charset/Charset;
            invokevirtual java.lang.String.getBytes:(Ljava/nio/charset/Charset;)[B
            invokevirtual io.netty.buffer.ByteBuf.writeBytes:([B)Lio/netty/buffer/ByteBuf;
            invokestatic io.netty.buffer.Unpooled.unreleasableBuffer:(Lio/netty/buffer/ByteBuf;)Lio/netty/buffer/ByteBuf;
         4: .line 69
            invokevirtual io.netty.buffer.ByteBuf.asReadOnly:()Lio/netty/buffer/ByteBuf;
         5: .line 67
            putstatic io.netty.handler.codec.http2.Http2CodecUtil.CONNECTION_PREFACE:Lio/netty/buffer/ByteBuf;
         6: .line 71
            bipush 8
            invokestatic io.netty.buffer.Unpooled.directBuffer:(I)Lio/netty/buffer/ByteBuf;
            bipush 8
            invokevirtual io.netty.buffer.ByteBuf.writeZero:(I)Lio/netty/buffer/ByteBuf;
            invokestatic io.netty.buffer.Unpooled.unreleasableBuffer:(Lio/netty/buffer/ByteBuf;)Lio/netty/buffer/ByteBuf;
         7: .line 72
            invokevirtual io.netty.buffer.ByteBuf.asReadOnly:()Lio/netty/buffer/ByteBuf;
         8: .line 70
            putstatic io.netty.handler.codec.http2.Http2CodecUtil.EMPTY_PING:Lio/netty/buffer/ByteBuf;
         9: .line 137
            getstatic java.util.concurrent.TimeUnit.MILLISECONDS:Ljava/util/concurrent/TimeUnit;
            ldc 30
            getstatic java.util.concurrent.TimeUnit.SECONDS:Ljava/util/concurrent/TimeUnit;
            invokevirtual java.util.concurrent.TimeUnit.convert:(JLjava/util/concurrent/TimeUnit;)J
            putstatic io.netty.handler.codec.http2.Http2CodecUtil.DEFAULT_GRACEFUL_SHUTDOWN_TIMEOUT_MILLIS:J
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public static long calculateMaxHeaderListSizeGoAway(long);
    descriptor: (J)J
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=2, args_size=1
        start local 0 // long maxHeaderListSize
         0: .line 134
            lload 0 /* maxHeaderListSize */
            lload 0 /* maxHeaderListSize */
            iconst_2
            lushr
            ladd
            lreturn
        end local 0 // long maxHeaderListSize
      LocalVariableTable:
        Start  End  Slot               Name  Signature
            0    1     0  maxHeaderListSize  J
    MethodParameters:
                   Name  Flags
      maxHeaderListSize  

  public static boolean isOutboundStream(boolean, int);
    descriptor: (ZI)Z
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // boolean server
        start local 1 // int streamId
         0: .line 146
            iload 1 /* streamId */
            iconst_1
            iand
            ifne 1
            iconst_1
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_0
      StackMap locals:
      StackMap stack: int
         2: istore 2 /* even */
        start local 2 // boolean even
         3: .line 147
            iload 1 /* streamId */
            ifle 4
            iload 0 /* server */
            iload 2 /* even */
            if_icmpne 4
            iconst_1
            ireturn
      StackMap locals: int
      StackMap stack:
         4: iconst_0
            ireturn
        end local 2 // boolean even
        end local 1 // int streamId
        end local 0 // boolean server
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    5     0    server  Z
            0    5     1  streamId  I
            3    5     2      even  Z
    MethodParameters:
          Name  Flags
      server    
      streamId  

  public static boolean isStreamIdValid(int);
    descriptor: (I)Z
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // int streamId
         0: .line 154
            iload 0 /* streamId */
            iflt 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 0 // int streamId
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    2     0  streamId  I
    MethodParameters:
          Name  Flags
      streamId  

  public static boolean isMaxFrameSizeValid(int);
    descriptor: (I)Z
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // int maxFrameSize
         0: .line 161
            iload 0 /* maxFrameSize */
            sipush 16384
            if_icmplt 1
            iload 0 /* maxFrameSize */
            ldc 16777215
            if_icmpgt 1
            iconst_1
            ireturn
      StackMap locals:
      StackMap stack:
         1: iconst_0
            ireturn
        end local 0 // int maxFrameSize
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    2     0  maxFrameSize  I
    MethodParameters:
              Name  Flags
      maxFrameSize  

  public static io.netty.buffer.ByteBuf connectionPrefaceBuf();
    descriptor: ()Lio/netty/buffer/ByteBuf;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 169
            getstatic io.netty.handler.codec.http2.Http2CodecUtil.CONNECTION_PREFACE:Lio/netty/buffer/ByteBuf;
            invokevirtual io.netty.buffer.ByteBuf.retainedDuplicate:()Lio/netty/buffer/ByteBuf;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public static io.netty.buffer.ByteBuf emptyPingBuf();
    descriptor: ()Lio/netty/buffer/ByteBuf;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 177
            getstatic io.netty.handler.codec.http2.Http2CodecUtil.EMPTY_PING:Lio/netty/buffer/ByteBuf;
            invokevirtual io.netty.buffer.ByteBuf.retainedDuplicate:()Lio/netty/buffer/ByteBuf;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public static io.netty.handler.codec.http2.Http2Exception getEmbeddedHttp2Exception(java.lang.Throwable);
    descriptor: (Ljava/lang/Throwable;)Lio/netty/handler/codec/http2/Http2Exception;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // java.lang.Throwable cause
         0: .line 185
            goto 4
         1: .line 186
      StackMap locals:
      StackMap stack:
            aload 0 /* cause */
            instanceof io.netty.handler.codec.http2.Http2Exception
            ifeq 3
         2: .line 187
            aload 0 /* cause */
            checkcast io.netty.handler.codec.http2.Http2Exception
            areturn
         3: .line 189
      StackMap locals:
      StackMap stack:
            aload 0 /* cause */
            invokevirtual java.lang.Throwable.getCause:()Ljava/lang/Throwable;
            astore 0 /* cause */
         4: .line 185
      StackMap locals:
      StackMap stack:
            aload 0 /* cause */
            ifnonnull 1
         5: .line 191
            aconst_null
            areturn
        end local 0 // java.lang.Throwable cause
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    6     0  cause  Ljava/lang/Throwable;
    MethodParameters:
       Name  Flags
      cause  

  public static io.netty.buffer.ByteBuf toByteBuf(io.netty.channel.ChannelHandlerContext, java.lang.Throwable);
    descriptor: (Lio/netty/channel/ChannelHandlerContext;Ljava/lang/Throwable;)Lio/netty/buffer/ByteBuf;
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.channel.ChannelHandlerContext ctx
        start local 1 // java.lang.Throwable cause
         0: .line 199
            aload 1 /* cause */
            ifnull 1
            aload 1 /* cause */
            invokevirtual java.lang.Throwable.getMessage:()Ljava/lang/String;
            ifnonnull 2
         1: .line 200
      StackMap locals:
      StackMap stack:
            getstatic io.netty.buffer.Unpooled.EMPTY_BUFFER:Lio/netty/buffer/ByteBuf;
            areturn
         2: .line 203
      StackMap locals:
      StackMap stack:
            aload 0 /* ctx */
            invokeinterface io.netty.channel.ChannelHandlerContext.alloc:()Lio/netty/buffer/ByteBufAllocator;
            aload 1 /* cause */
            invokevirtual java.lang.Throwable.getMessage:()Ljava/lang/String;
            invokestatic io.netty.buffer.ByteBufUtil.writeUtf8:(Lio/netty/buffer/ByteBufAllocator;Ljava/lang/CharSequence;)Lio/netty/buffer/ByteBuf;
            areturn
        end local 1 // java.lang.Throwable cause
        end local 0 // io.netty.channel.ChannelHandlerContext ctx
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    3     0    ctx  Lio/netty/channel/ChannelHandlerContext;
            0    3     1  cause  Ljava/lang/Throwable;
    MethodParameters:
       Name  Flags
      ctx    
      cause  

  public static int readUnsignedInt(io.netty.buffer.ByteBuf);
    descriptor: (Lio/netty/buffer/ByteBuf;)I
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // io.netty.buffer.ByteBuf buf
         0: .line 210
            aload 0 /* buf */
            invokevirtual io.netty.buffer.ByteBuf.readInt:()I
            ldc 2147483647
            iand
            ireturn
        end local 0 // io.netty.buffer.ByteBuf buf
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0   buf  Lio/netty/buffer/ByteBuf;
    MethodParameters:
      Name  Flags
      buf   

  public static void writeFrameHeader(io.netty.buffer.ByteBuf, int, byte, io.netty.handler.codec.http2.Http2Flags, int);
    descriptor: (Lio/netty/buffer/ByteBuf;IBLio/netty/handler/codec/http2/Http2Flags;I)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=5, args_size=5
        start local 0 // io.netty.buffer.ByteBuf out
        start local 1 // int payloadLength
        start local 2 // byte type
        start local 3 // io.netty.handler.codec.http2.Http2Flags flags
        start local 4 // int streamId
         0: .line 218
            aload 0 /* out */
            bipush 9
            iload 1 /* payloadLength */
            iadd
            invokevirtual io.netty.buffer.ByteBuf.ensureWritable:(I)Lio/netty/buffer/ByteBuf;
            pop
         1: .line 219
            aload 0 /* out */
            iload 1 /* payloadLength */
            iload 2 /* type */
            aload 3 /* flags */
            iload 4 /* streamId */
            invokestatic io.netty.handler.codec.http2.Http2CodecUtil.writeFrameHeaderInternal:(Lio/netty/buffer/ByteBuf;IBLio/netty/handler/codec/http2/Http2Flags;I)V
         2: .line 220
            return
        end local 4 // int streamId
        end local 3 // io.netty.handler.codec.http2.Http2Flags flags
        end local 2 // byte type
        end local 1 // int payloadLength
        end local 0 // io.netty.buffer.ByteBuf out
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    3     0            out  Lio/netty/buffer/ByteBuf;
            0    3     1  payloadLength  I
            0    3     2           type  B
            0    3     3          flags  Lio/netty/handler/codec/http2/Http2Flags;
            0    3     4       streamId  I
    MethodParameters:
               Name  Flags
      out            
      payloadLength  
      type           
      flags          
      streamId       

  public static int streamableBytes(io.netty.handler.codec.http2.StreamByteDistributor$StreamState);
    descriptor: (Lio/netty/handler/codec/http2/StreamByteDistributor$StreamState;)I
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=5, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.http2.StreamByteDistributor$StreamState state
         0: .line 226
            iconst_0
            aload 0 /* state */
            invokeinterface io.netty.handler.codec.http2.StreamByteDistributor$StreamState.pendingBytes:()J
            aload 0 /* state */
            invokeinterface io.netty.handler.codec.http2.StreamByteDistributor$StreamState.windowSize:()I
            i2l
            invokestatic java.lang.Math.min:(JJ)J
            l2i
            invokestatic java.lang.Math.max:(II)I
            ireturn
        end local 0 // io.netty.handler.codec.http2.StreamByteDistributor$StreamState state
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    1     0  state  Lio/netty/handler/codec/http2/StreamByteDistributor$StreamState;
    MethodParameters:
       Name  Flags
      state  

  public static void headerListSizeExceeded(int, long, boolean);
    descriptor: (IJZ)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=9, locals=4, args_size=3
        start local 0 // int streamId
        start local 1 // long maxHeaderListSize
        start local 3 // boolean onDecode
         0: .line 239
            iload 0 /* streamId */
            getstatic io.netty.handler.codec.http2.Http2Error.PROTOCOL_ERROR:Lio/netty/handler/codec/http2/Http2Error;
            iload 3 /* onDecode */
            ldc "Header size exceeded max allowed size (%d)"
            iconst_1
            anewarray java.lang.Object
            dup
            iconst_0
         1: .line 240
            lload 1 /* maxHeaderListSize */
            invokestatic java.lang.Long.valueOf:(J)Ljava/lang/Long;
            aastore
         2: .line 239
            invokestatic io.netty.handler.codec.http2.Http2Exception.headerListSizeError:(ILio/netty/handler/codec/http2/Http2Error;ZLjava/lang/String;[Ljava/lang/Object;)Lio/netty/handler/codec/http2/Http2Exception;
            athrow
        end local 3 // boolean onDecode
        end local 1 // long maxHeaderListSize
        end local 0 // int streamId
      LocalVariableTable:
        Start  End  Slot               Name  Signature
            0    3     0           streamId  I
            0    3     1  maxHeaderListSize  J
            0    3     3           onDecode  Z
    Exceptions:
      throws io.netty.handler.codec.http2.Http2Exception
    MethodParameters:
                   Name  Flags
      streamId           
      maxHeaderListSize  
      onDecode           

  public static void headerListSizeExceeded(long);
    descriptor: (J)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=7, locals=2, args_size=1
        start local 0 // long maxHeaderListSize
         0: .line 251
            getstatic io.netty.handler.codec.http2.Http2Error.PROTOCOL_ERROR:Lio/netty/handler/codec/http2/Http2Error;
            ldc "Header size exceeded max allowed size (%d)"
            iconst_1
            anewarray java.lang.Object
            dup
            iconst_0
         1: .line 252
            lload 0 /* maxHeaderListSize */
            invokestatic java.lang.Long.valueOf:(J)Ljava/lang/Long;
            aastore
         2: .line 251
            invokestatic io.netty.handler.codec.http2.Http2Exception.connectionError:(Lio/netty/handler/codec/http2/Http2Error;Ljava/lang/String;[Ljava/lang/Object;)Lio/netty/handler/codec/http2/Http2Exception;
            athrow
        end local 0 // long maxHeaderListSize
      LocalVariableTable:
        Start  End  Slot               Name  Signature
            0    3     0  maxHeaderListSize  J
    Exceptions:
      throws io.netty.handler.codec.http2.Http2Exception
    MethodParameters:
                   Name  Flags
      maxHeaderListSize  

  static void writeFrameHeaderInternal(io.netty.buffer.ByteBuf, int, byte, io.netty.handler.codec.http2.Http2Flags, int);
    descriptor: (Lio/netty/buffer/ByteBuf;IBLio/netty/handler/codec/http2/Http2Flags;I)V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=5, args_size=5
        start local 0 // io.netty.buffer.ByteBuf out
        start local 1 // int payloadLength
        start local 2 // byte type
        start local 3 // io.netty.handler.codec.http2.Http2Flags flags
        start local 4 // int streamId
         0: .line 257
            aload 0 /* out */
            iload 1 /* payloadLength */
            invokevirtual io.netty.buffer.ByteBuf.writeMedium:(I)Lio/netty/buffer/ByteBuf;
            pop
         1: .line 258
            aload 0 /* out */
            iload 2 /* type */
            invokevirtual io.netty.buffer.ByteBuf.writeByte:(I)Lio/netty/buffer/ByteBuf;
            pop
         2: .line 259
            aload 0 /* out */
            aload 3 /* flags */
            invokevirtual io.netty.handler.codec.http2.Http2Flags.value:()S
            invokevirtual io.netty.buffer.ByteBuf.writeByte:(I)Lio/netty/buffer/ByteBuf;
            pop
         3: .line 260
            aload 0 /* out */
            iload 4 /* streamId */
            invokevirtual io.netty.buffer.ByteBuf.writeInt:(I)Lio/netty/buffer/ByteBuf;
            pop
         4: .line 261
            return
        end local 4 // int streamId
        end local 3 // io.netty.handler.codec.http2.Http2Flags flags
        end local 2 // byte type
        end local 1 // int payloadLength
        end local 0 // io.netty.buffer.ByteBuf out
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    5     0            out  Lio/netty/buffer/ByteBuf;
            0    5     1  payloadLength  I
            0    5     2           type  B
            0    5     3          flags  Lio/netty/handler/codec/http2/Http2Flags;
            0    5     4       streamId  I
    MethodParameters:
               Name  Flags
      out            
      payloadLength  
      type           
      flags          
      streamId       

  public static void verifyPadding(int);
    descriptor: (I)V
    flags: (0x0009) ACC_PUBLIC, ACC_STATIC
    Code:
      stack=7, locals=1, args_size=1
        start local 0 // int padding
         0: .line 398
            iload 0 /* padding */
            iflt 1
            iload 0 /* padding */
            sipush 256
            if_icmple 4
         1: .line 399
      StackMap locals:
      StackMap stack:
            new java.lang.IllegalArgumentException
            dup
            ldc "Invalid padding '%d'. Padding must be between 0 and %d (inclusive)."
            iconst_2
            anewarray java.lang.Object
            dup
            iconst_0
         2: .line 400
            iload 0 /* padding */
            invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
            aastore
            dup
            iconst_1
            sipush 256
            invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
            aastore
         3: .line 399
            invokestatic java.lang.String.format:(Ljava/lang/String;[Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.IllegalArgumentException.<init>:(Ljava/lang/String;)V
            athrow
         4: .line 402
      StackMap locals:
      StackMap stack:
            return
        end local 0 // int padding
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    5     0  padding  I
    MethodParameters:
         Name  Flags
      padding  

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.http2.Http2CodecUtil this
         0: .line 403
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
            return
        end local 0 // io.netty.handler.codec.http2.Http2CodecUtil this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/http2/Http2CodecUtil;
}
SourceFile: "Http2CodecUtil.java"
NestMembers:
  io.netty.handler.codec.http2.Http2CodecUtil$SimpleChannelPromiseAggregator
InnerClasses:
  final SimpleChannelPromiseAggregator = io.netty.handler.codec.http2.Http2CodecUtil$SimpleChannelPromiseAggregator of io.netty.handler.codec.http2.Http2CodecUtil
  public abstract StreamState = io.netty.handler.codec.http2.StreamByteDistributor$StreamState of io.netty.handler.codec.http2.StreamByteDistributor