final class io.netty.handler.codec.http.websocketx.WebSocketUtil
  minor version: 0
  major version: 59
  flags: flags: (0x0030) ACC_FINAL, ACC_SUPER
  this_class: io.netty.handler.codec.http.websocketx.WebSocketUtil
  super_class: java.lang.Object
{
  private static final io.netty.util.concurrent.FastThreadLocal<java.security.MessageDigest> MD5;
    descriptor: Lio/netty/util/concurrent/FastThreadLocal;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    Signature: Lio/netty/util/concurrent/FastThreadLocal<Ljava/security/MessageDigest;>;

  private static final io.netty.util.concurrent.FastThreadLocal<java.security.MessageDigest> SHA1;
    descriptor: Lio/netty/util/concurrent/FastThreadLocal;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL
    Signature: Lio/netty/util/concurrent/FastThreadLocal<Ljava/security/MessageDigest;>;

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=0, args_size=0
         0: .line 32
            new io.netty.handler.codec.http.websocketx.WebSocketUtil$1
            dup
            invokespecial io.netty.handler.codec.http.websocketx.WebSocketUtil$1.<init>:()V
            putstatic io.netty.handler.codec.http.websocketx.WebSocketUtil.MD5:Lio/netty/util/concurrent/FastThreadLocal;
         1: .line 45
            new io.netty.handler.codec.http.websocketx.WebSocketUtil$2
            dup
            invokespecial io.netty.handler.codec.http.websocketx.WebSocketUtil$2.<init>:()V
            putstatic io.netty.handler.codec.http.websocketx.WebSocketUtil.SHA1:Lio/netty/util/concurrent/FastThreadLocal;
         2: .line 56
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  static byte[] md5(byte[]);
    descriptor: ([B)[B
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // byte[] data
         0: .line 66
            getstatic io.netty.handler.codec.http.websocketx.WebSocketUtil.MD5:Lio/netty/util/concurrent/FastThreadLocal;
            aload 0 /* data */
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketUtil.digest:(Lio/netty/util/concurrent/FastThreadLocal;[B)[B
            areturn
        end local 0 // byte[] data
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  data  [B
    MethodParameters:
      Name  Flags
      data  

  static byte[] sha1(byte[]);
    descriptor: ([B)[B
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // byte[] data
         0: .line 77
            getstatic io.netty.handler.codec.http.websocketx.WebSocketUtil.SHA1:Lio/netty/util/concurrent/FastThreadLocal;
            aload 0 /* data */
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketUtil.digest:(Lio/netty/util/concurrent/FastThreadLocal;[B)[B
            areturn
        end local 0 // byte[] data
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  data  [B
    MethodParameters:
      Name  Flags
      data  

  private static byte[] digest(io.netty.util.concurrent.FastThreadLocal<java.security.MessageDigest>, );
    descriptor: (Lio/netty/util/concurrent/FastThreadLocal;[B)[B
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // io.netty.util.concurrent.FastThreadLocal digestFastThreadLocal
        start local 1 // byte[] data
         0: .line 81
            aload 0 /* digestFastThreadLocal */
            invokevirtual io.netty.util.concurrent.FastThreadLocal.get:()Ljava/lang/Object;
            checkcast java.security.MessageDigest
            astore 2 /* digest */
        start local 2 // java.security.MessageDigest digest
         1: .line 82
            aload 2 /* digest */
            invokevirtual java.security.MessageDigest.reset:()V
         2: .line 83
            aload 2 /* digest */
            aload 1 /* data */
            invokevirtual java.security.MessageDigest.digest:([B)[B
            areturn
        end local 2 // java.security.MessageDigest digest
        end local 1 // byte[] data
        end local 0 // io.netty.util.concurrent.FastThreadLocal digestFastThreadLocal
      LocalVariableTable:
        Start  End  Slot                   Name  Signature
            0    3     0  digestFastThreadLocal  Lio/netty/util/concurrent/FastThreadLocal<Ljava/security/MessageDigest;>;
            0    3     1                   data  [B
            1    3     2                 digest  Ljava/security/MessageDigest;
    Signature: (Lio/netty/util/concurrent/FastThreadLocal<Ljava/security/MessageDigest;>;[B)[B
    MethodParameters:
                       Name  Flags
      digestFastThreadLocal  
      data                   

  static java.lang.String base64(byte[]);
    descriptor: ([B)Ljava/lang/String;
    flags: (0x0008) ACC_STATIC
    Code:
      stack=2, locals=4, args_size=1
        start local 0 // byte[] data
         0: .line 93
            aload 0 /* data */
            invokestatic io.netty.buffer.Unpooled.wrappedBuffer:([B)Lio/netty/buffer/ByteBuf;
            astore 1 /* encodedData */
        start local 1 // io.netty.buffer.ByteBuf encodedData
         1: .line 94
            aload 1 /* encodedData */
            invokestatic io.netty.handler.codec.base64.Base64.encode:(Lio/netty/buffer/ByteBuf;)Lio/netty/buffer/ByteBuf;
            astore 2 /* encoded */
        start local 2 // io.netty.buffer.ByteBuf encoded
         2: .line 95
            aload 2 /* encoded */
            getstatic io.netty.util.CharsetUtil.UTF_8:Ljava/nio/charset/Charset;
            invokevirtual io.netty.buffer.ByteBuf.toString:(Ljava/nio/charset/Charset;)Ljava/lang/String;
            astore 3 /* encodedString */
        start local 3 // java.lang.String encodedString
         3: .line 96
            aload 2 /* encoded */
            invokevirtual io.netty.buffer.ByteBuf.release:()Z
            pop
         4: .line 97
            aload 3 /* encodedString */
            areturn
        end local 3 // java.lang.String encodedString
        end local 2 // io.netty.buffer.ByteBuf encoded
        end local 1 // io.netty.buffer.ByteBuf encodedData
        end local 0 // byte[] data
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0    5     0           data  [B
            1    5     1    encodedData  Lio/netty/buffer/ByteBuf;
            2    5     2        encoded  Lio/netty/buffer/ByteBuf;
            3    5     3  encodedString  Ljava/lang/String;
    MethodParameters:
      Name  Flags
      data  

  static byte[] randomBytes(int);
    descriptor: (I)[B
    flags: (0x0008) ACC_STATIC
    Code:
      stack=4, locals=3, args_size=1
        start local 0 // int size
         0: .line 107
            iload 0 /* size */
            newarray 8
            astore 1 /* bytes */
        start local 1 // byte[] bytes
         1: .line 109
            iconst_0
            istore 2 /* index */
        start local 2 // int index
         2: goto 5
         3: .line 110
      StackMap locals: byte[] int
      StackMap stack:
            aload 1 /* bytes */
            iload 2 /* index */
            iconst_0
            sipush 255
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketUtil.randomNumber:(II)I
            i2b
            bastore
         4: .line 109
            iinc 2 /* index */ 1
      StackMap locals:
      StackMap stack:
         5: iload 2 /* index */
            iload 0 /* size */
            if_icmplt 3
        end local 2 // int index
         6: .line 113
            aload 1 /* bytes */
            areturn
        end local 1 // byte[] bytes
        end local 0 // int size
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    7     0   size  I
            1    7     1  bytes  [B
            2    6     2  index  I
    MethodParameters:
      Name  Flags
      size  

  static int randomNumber(int, int);
    descriptor: (II)I
    flags: (0x0008) ACC_STATIC
    Code:
      stack=4, locals=2, args_size=2
        start local 0 // int minimum
        start local 1 // int maximum
         0: .line 124
            invokestatic java.lang.Math.random:()D
            iload 1 /* maximum */
            i2d
            dmul
            iload 0 /* minimum */
            i2d
            dadd
            d2i
            ireturn
        end local 1 // int maximum
        end local 0 // int minimum
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    1     0  minimum  I
            0    1     1  maximum  I
    MethodParameters:
         Name  Flags
      minimum  
      maximum  

  private void <init>();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.http.websocketx.WebSocketUtil this
         0: .line 130
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 132
            return
        end local 0 // io.netty.handler.codec.http.websocketx.WebSocketUtil this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lio/netty/handler/codec/http/websocketx/WebSocketUtil;
}
SourceFile: "WebSocketUtil.java"
NestMembers:
  io.netty.handler.codec.http.websocketx.WebSocketUtil$1  io.netty.handler.codec.http.websocketx.WebSocketUtil$2
InnerClasses:
  io.netty.handler.codec.http.websocketx.WebSocketUtil$1
  io.netty.handler.codec.http.websocketx.WebSocketUtil$2