https://projects.eclipse.org/projects/ee4j.grizzly/grizzly-websockets: Grizzly Bill of Materials (BOM) (Oracle Corporation) 
public class org.glassfish.grizzly.websockets.Masker
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: org.glassfish.grizzly.websockets.Masker
  super_class: java.lang.Object
{
  private org.glassfish.grizzly.Buffer buffer;
    descriptor: Lorg/glassfish/grizzly/Buffer;
    flags: (0x0002) ACC_PRIVATE

  private byte[] mask;
    descriptor: [B
    flags: (0x0002) ACC_PRIVATE

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

  public void <init>(org.glassfish.grizzly.Buffer);
    descriptor: (Lorg/glassfish/grizzly/Buffer;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.glassfish.grizzly.websockets.Masker this
        start local 1 // org.glassfish.grizzly.Buffer buffer
         0: .line 28
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 26
            aload 0 /* this */
            iconst_0
            putfield org.glassfish.grizzly.websockets.Masker.index:I
         2: .line 29
            aload 0 /* this */
            aload 1 /* buffer */
            putfield org.glassfish.grizzly.websockets.Masker.buffer:Lorg/glassfish/grizzly/Buffer;
         3: .line 30
            return
        end local 1 // org.glassfish.grizzly.Buffer buffer
        end local 0 // org.glassfish.grizzly.websockets.Masker this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    4     0    this  Lorg/glassfish/grizzly/websockets/Masker;
            0    4     1  buffer  Lorg/glassfish/grizzly/Buffer;
    MethodParameters:
        Name  Flags
      buffer  

  public void <init>();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.glassfish.grizzly.websockets.Masker this
         0: .line 32
            aload 0 /* this */
            invokespecial java.lang.Object.<init>:()V
         1: .line 26
            aload 0 /* this */
            iconst_0
            putfield org.glassfish.grizzly.websockets.Masker.index:I
         2: .line 33
            aload 0 /* this */
            invokevirtual org.glassfish.grizzly.websockets.Masker.generateMask:()V
         3: .line 34
            return
        end local 0 // org.glassfish.grizzly.websockets.Masker this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lorg/glassfish/grizzly/websockets/Masker;

  public byte get();
    descriptor: ()B
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.glassfish.grizzly.websockets.Masker this
         0: .line 37
            aload 0 /* this */
            getfield org.glassfish.grizzly.websockets.Masker.buffer:Lorg/glassfish/grizzly/Buffer;
            invokeinterface org.glassfish.grizzly.Buffer.get:()B
            ireturn
        end local 0 // org.glassfish.grizzly.websockets.Masker this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/glassfish/grizzly/websockets/Masker;

  public byte[] get(int);
    descriptor: (I)[B
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=3, args_size=2
        start local 0 // org.glassfish.grizzly.websockets.Masker this
        start local 1 // int size
         0: .line 41
            iload 1 /* size */
            newarray 8
            astore 2 /* bytes */
        start local 2 // byte[] bytes
         1: .line 42
            aload 0 /* this */
            getfield org.glassfish.grizzly.websockets.Masker.buffer:Lorg/glassfish/grizzly/Buffer;
            aload 2 /* bytes */
            invokeinterface org.glassfish.grizzly.Buffer.get:([B)Lorg/glassfish/grizzly/Buffer;
            pop
         2: .line 43
            aload 2 /* bytes */
            areturn
        end local 2 // byte[] bytes
        end local 1 // int size
        end local 0 // org.glassfish.grizzly.websockets.Masker this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    3     0   this  Lorg/glassfish/grizzly/websockets/Masker;
            0    3     1   size  I
            1    3     2  bytes  [B
    MethodParameters:
      Name  Flags
      size  final

  public byte unmask();
    descriptor: ()B
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=2, args_size=1
        start local 0 // org.glassfish.grizzly.websockets.Masker this
         0: .line 47
            aload 0 /* this */
            invokevirtual org.glassfish.grizzly.websockets.Masker.get:()B
            istore 1 /* b */
        start local 1 // byte b
         1: .line 48
            aload 0 /* this */
            getfield org.glassfish.grizzly.websockets.Masker.mask:[B
            ifnonnull 2
            iload 1 /* b */
            goto 3
      StackMap locals: int
      StackMap stack:
         2: iload 1 /* b */
            aload 0 /* this */
            getfield org.glassfish.grizzly.websockets.Masker.mask:[B
            aload 0 /* this */
            dup
            getfield org.glassfish.grizzly.websockets.Masker.index:I
            dup_x1
            iconst_1
            iadd
            putfield org.glassfish.grizzly.websockets.Masker.index:I
            iconst_4
            irem
            baload
            ixor
            i2b
      StackMap locals:
      StackMap stack: int
         3: ireturn
        end local 1 // byte b
        end local 0 // org.glassfish.grizzly.websockets.Masker this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    4     0  this  Lorg/glassfish/grizzly/websockets/Masker;
            1    4     1     b  B

  public byte[] unmask(int);
    descriptor: (I)[B
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=8, locals=4, args_size=2
        start local 0 // org.glassfish.grizzly.websockets.Masker this
        start local 1 // int count
         0: .line 52
            aload 0 /* this */
            iload 1 /* count */
            invokevirtual org.glassfish.grizzly.websockets.Masker.get:(I)[B
            astore 2 /* bytes */
        start local 2 // byte[] bytes
         1: .line 53
            aload 0 /* this */
            getfield org.glassfish.grizzly.websockets.Masker.mask:[B
            ifnull 7
         2: .line 54
            iconst_0
            istore 3 /* i */
        start local 3 // int i
         3: goto 6
         4: .line 55
      StackMap locals: byte[] int
      StackMap stack:
            aload 2 /* bytes */
            iload 3 /* i */
            dup2
            baload
            aload 0 /* this */
            getfield org.glassfish.grizzly.websockets.Masker.mask:[B
            aload 0 /* this */
            dup
            getfield org.glassfish.grizzly.websockets.Masker.index:I
            dup_x1
            iconst_1
            iadd
            putfield org.glassfish.grizzly.websockets.Masker.index:I
            iconst_4
            irem
            baload
            ixor
            i2b
            bastore
         5: .line 54
            iinc 3 /* i */ 1
      StackMap locals:
      StackMap stack:
         6: iload 3 /* i */
            aload 2 /* bytes */
            arraylength
            if_icmplt 4
        end local 3 // int i
         7: .line 59
      StackMap locals:
      StackMap stack:
            aload 2 /* bytes */
            areturn
        end local 2 // byte[] bytes
        end local 1 // int count
        end local 0 // org.glassfish.grizzly.websockets.Masker this
      LocalVariableTable:
        Start  End  Slot   Name  Signature
            0    8     0   this  Lorg/glassfish/grizzly/websockets/Masker;
            0    8     1  count  I
            1    8     2  bytes  [B
            3    7     3      i  I
    MethodParameters:
       Name  Flags
      count  

  public void generateMask();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // org.glassfish.grizzly.websockets.Masker this
         0: .line 63
            aload 0 /* this */
            iconst_4
            newarray 8
            putfield org.glassfish.grizzly.websockets.Masker.mask:[B
         1: .line 64
            new java.security.SecureRandom
            dup
            invokespecial java.security.SecureRandom.<init>:()V
            aload 0 /* this */
            getfield org.glassfish.grizzly.websockets.Masker.mask:[B
            invokevirtual java.security.SecureRandom.nextBytes:([B)V
         2: .line 65
            return
        end local 0 // org.glassfish.grizzly.websockets.Masker this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lorg/glassfish/grizzly/websockets/Masker;

  public void mask(byte[], int, byte);
    descriptor: ([BIB)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=8, locals=4, args_size=4
        start local 0 // org.glassfish.grizzly.websockets.Masker this
        start local 1 // byte[] bytes
        start local 2 // int location
        start local 3 // byte b
         0: .line 68
            aload 1 /* bytes */
            iload 2 /* location */
            aload 0 /* this */
            getfield org.glassfish.grizzly.websockets.Masker.mask:[B
            ifnonnull 1
            iload 3 /* b */
            goto 2
      StackMap locals: org.glassfish.grizzly.websockets.Masker byte[] int int
      StackMap stack: byte[] int
         1: iload 3 /* b */
            aload 0 /* this */
            getfield org.glassfish.grizzly.websockets.Masker.mask:[B
            aload 0 /* this */
            dup
            getfield org.glassfish.grizzly.websockets.Masker.index:I
            dup_x1
            iconst_1
            iadd
            putfield org.glassfish.grizzly.websockets.Masker.index:I
            iconst_4
            irem
            baload
            ixor
            i2b
      StackMap locals: org.glassfish.grizzly.websockets.Masker byte[] int int
      StackMap stack: byte[] int int
         2: bastore
         3: .line 69
            return
        end local 3 // byte b
        end local 2 // int location
        end local 1 // byte[] bytes
        end local 0 // org.glassfish.grizzly.websockets.Masker this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    4     0      this  Lorg/glassfish/grizzly/websockets/Masker;
            0    4     1     bytes  [B
            0    4     2  location  I
            0    4     3         b  B
    MethodParameters:
          Name  Flags
      bytes     
      location  
      b         

  public void mask(byte[], int, byte[]);
    descriptor: ([BI[B)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=8, locals=5, args_size=4
        start local 0 // org.glassfish.grizzly.websockets.Masker this
        start local 1 // byte[] target
        start local 2 // int location
        start local 3 // byte[] bytes
         0: .line 72
            aload 3 /* bytes */
            ifnull 9
            aload 1 /* target */
            ifnull 9
         1: .line 73
            iconst_0
            istore 4 /* i */
        start local 4 // int i
         2: goto 8
         3: .line 74
      StackMap locals: int
      StackMap stack:
            aload 1 /* target */
            iload 2 /* location */
            iload 4 /* i */
            iadd
            aload 0 /* this */
            getfield org.glassfish.grizzly.websockets.Masker.mask:[B
            ifnonnull 5
         4: .line 75
            aload 3 /* bytes */
            iload 4 /* i */
            baload
            goto 6
         5: .line 76
      StackMap locals: org.glassfish.grizzly.websockets.Masker byte[] int byte[] int
      StackMap stack: byte[] int
            aload 3 /* bytes */
            iload 4 /* i */
            baload
            aload 0 /* this */
            getfield org.glassfish.grizzly.websockets.Masker.mask:[B
            aload 0 /* this */
            dup
            getfield org.glassfish.grizzly.websockets.Masker.index:I
            dup_x1
            iconst_1
            iadd
            putfield org.glassfish.grizzly.websockets.Masker.index:I
            iconst_4
            irem
            baload
            ixor
            i2b
         6: .line 74
      StackMap locals: org.glassfish.grizzly.websockets.Masker byte[] int byte[] int
      StackMap stack: byte[] int int
            bastore
         7: .line 73
            iinc 4 /* i */ 1
      StackMap locals:
      StackMap stack:
         8: iload 4 /* i */
            aload 3 /* bytes */
            arraylength
            if_icmplt 3
        end local 4 // int i
         9: .line 79
      StackMap locals:
      StackMap stack:
            return
        end local 3 // byte[] bytes
        end local 2 // int location
        end local 1 // byte[] target
        end local 0 // org.glassfish.grizzly.websockets.Masker this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0   10     0      this  Lorg/glassfish/grizzly/websockets/Masker;
            0   10     1    target  [B
            0   10     2  location  I
            0   10     3     bytes  [B
            2    9     4         i  I
    MethodParameters:
          Name  Flags
      target    
      location  
      bytes     

  public byte[] maskAndPrepend(byte[]);
    descriptor: ([B)[B
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=5, locals=3, args_size=2
        start local 0 // org.glassfish.grizzly.websockets.Masker this
        start local 1 // byte[] packet
         0: .line 82
            aload 1 /* packet */
            arraylength
            iconst_4
            iadd
            newarray 8
            astore 2 /* masked */
        start local 2 // byte[] masked
         1: .line 83
            aload 0 /* this */
            invokevirtual org.glassfish.grizzly.websockets.Masker.getMask:()[B
            iconst_0
            aload 2 /* masked */
            iconst_0
            iconst_4
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
         2: .line 84
            aload 0 /* this */
            aload 2 /* masked */
            iconst_4
            aload 1 /* packet */
            invokevirtual org.glassfish.grizzly.websockets.Masker.mask:([BI[B)V
         3: .line 85
            aload 2 /* masked */
            areturn
        end local 2 // byte[] masked
        end local 1 // byte[] packet
        end local 0 // org.glassfish.grizzly.websockets.Masker this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    4     0    this  Lorg/glassfish/grizzly/websockets/Masker;
            0    4     1  packet  [B
            1    4     2  masked  [B
    MethodParameters:
        Name  Flags
      packet  

  public void setBuffer(org.glassfish.grizzly.Buffer);
    descriptor: (Lorg/glassfish/grizzly/Buffer;)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // org.glassfish.grizzly.websockets.Masker this
        start local 1 // org.glassfish.grizzly.Buffer buffer
         0: .line 89
            aload 0 /* this */
            aload 1 /* buffer */
            putfield org.glassfish.grizzly.websockets.Masker.buffer:Lorg/glassfish/grizzly/Buffer;
         1: .line 90
            return
        end local 1 // org.glassfish.grizzly.Buffer buffer
        end local 0 // org.glassfish.grizzly.websockets.Masker this
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    2     0    this  Lorg/glassfish/grizzly/websockets/Masker;
            0    2     1  buffer  Lorg/glassfish/grizzly/Buffer;
    MethodParameters:
        Name  Flags
      buffer  

  public byte[] getMask();
    descriptor: ()[B
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // org.glassfish.grizzly.websockets.Masker this
         0: .line 94
            aload 0 /* this */
            getfield org.glassfish.grizzly.websockets.Masker.mask:[B
            areturn
        end local 0 // org.glassfish.grizzly.websockets.Masker this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lorg/glassfish/grizzly/websockets/Masker;

  public void readMask();
    descriptor: ()V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // org.glassfish.grizzly.websockets.Masker this
         0: .line 98
            aload 0 /* this */
            aload 0 /* this */
            iconst_4
            invokevirtual org.glassfish.grizzly.websockets.Masker.get:(I)[B
            putfield org.glassfish.grizzly.websockets.Masker.mask:[B
         1: .line 99
            return
        end local 0 // org.glassfish.grizzly.websockets.Masker this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lorg/glassfish/grizzly/websockets/Masker;
}
SourceFile: "Masker.java"