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 class io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00 extends io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker
  minor version: 0
  major version: 59
  flags: flags: (0x0021) ACC_PUBLIC, ACC_SUPER
  this_class: io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00
  super_class: io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker
{
  private static final io.netty.util.AsciiString WEBSOCKET;
    descriptor: Lio/netty/util/AsciiString;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private io.netty.buffer.ByteBuf expectedChallengeResponseBytes;
    descriptor: Lio/netty/buffer/ByteBuf;
    flags: (0x0002) ACC_PRIVATE

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=1, locals=0, args_size=0
         0: .line 46
            ldc "WebSocket"
            invokestatic io.netty.util.AsciiString.cached:(Ljava/lang/String;)Lio/netty/util/AsciiString;
            putstatic io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00.WEBSOCKET:Lio/netty/util/AsciiString;
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public void <init>(java.net.URI, io.netty.handler.codec.http.websocketx.WebSocketVersion, java.lang.String, io.netty.handler.codec.http.HttpHeaders, int);
    descriptor: (Ljava/net/URI;Lio/netty/handler/codec/http/websocketx/WebSocketVersion;Ljava/lang/String;Lio/netty/handler/codec/http/HttpHeaders;I)V
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=6, locals=6, args_size=6
        start local 0 // io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00 this
        start local 1 // java.net.URI webSocketURL
        start local 2 // io.netty.handler.codec.http.websocketx.WebSocketVersion version
        start local 3 // java.lang.String subprotocol
        start local 4 // io.netty.handler.codec.http.HttpHeaders customHeaders
        start local 5 // int maxFramePayloadLength
         0: .line 67
            aload 0 /* this */
            aload 1 /* webSocketURL */
            aload 2 /* version */
            aload 3 /* subprotocol */
            aload 4 /* customHeaders */
            iload 5 /* maxFramePayloadLength */
            invokespecial io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker.<init>:(Ljava/net/URI;Lio/netty/handler/codec/http/websocketx/WebSocketVersion;Ljava/lang/String;Lio/netty/handler/codec/http/HttpHeaders;I)V
         1: .line 68
            return
        end local 5 // int maxFramePayloadLength
        end local 4 // io.netty.handler.codec.http.HttpHeaders customHeaders
        end local 3 // java.lang.String subprotocol
        end local 2 // io.netty.handler.codec.http.websocketx.WebSocketVersion version
        end local 1 // java.net.URI webSocketURL
        end local 0 // io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00 this
      LocalVariableTable:
        Start  End  Slot                   Name  Signature
            0    2     0                   this  Lio/netty/handler/codec/http/websocketx/WebSocketClientHandshaker00;
            0    2     1           webSocketURL  Ljava/net/URI;
            0    2     2                version  Lio/netty/handler/codec/http/websocketx/WebSocketVersion;
            0    2     3            subprotocol  Ljava/lang/String;
            0    2     4          customHeaders  Lio/netty/handler/codec/http/HttpHeaders;
            0    2     5  maxFramePayloadLength  I
    MethodParameters:
                       Name  Flags
      webSocketURL           
      version                
      subprotocol            
      customHeaders          
      maxFramePayloadLength  

  protected io.netty.handler.codec.http.FullHttpRequest newHandshakeRequest();
    descriptor: ()Lio/netty/handler/codec/http/FullHttpRequest;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=5, locals=21, args_size=1
        start local 0 // io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00 this
         0: .line 91
            iconst_1
            bipush 12
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketUtil.randomNumber:(II)I
            istore 1 /* spaces1 */
        start local 1 // int spaces1
         1: .line 92
            iconst_1
            bipush 12
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketUtil.randomNumber:(II)I
            istore 2 /* spaces2 */
        start local 2 // int spaces2
         2: .line 94
            ldc 2147483647
            iload 1 /* spaces1 */
            idiv
            istore 3 /* max1 */
        start local 3 // int max1
         3: .line 95
            ldc 2147483647
            iload 2 /* spaces2 */
            idiv
            istore 4 /* max2 */
        start local 4 // int max2
         4: .line 97
            iconst_0
            iload 3 /* max1 */
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketUtil.randomNumber:(II)I
            istore 5 /* number1 */
        start local 5 // int number1
         5: .line 98
            iconst_0
            iload 4 /* max2 */
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketUtil.randomNumber:(II)I
            istore 6 /* number2 */
        start local 6 // int number2
         6: .line 100
            iload 5 /* number1 */
            iload 1 /* spaces1 */
            imul
            istore 7 /* product1 */
        start local 7 // int product1
         7: .line 101
            iload 6 /* number2 */
            iload 2 /* spaces2 */
            imul
            istore 8 /* product2 */
        start local 8 // int product2
         8: .line 103
            iload 7 /* product1 */
            invokestatic java.lang.Integer.toString:(I)Ljava/lang/String;
            astore 9 /* key1 */
        start local 9 // java.lang.String key1
         9: .line 104
            iload 8 /* product2 */
            invokestatic java.lang.Integer.toString:(I)Ljava/lang/String;
            astore 10 /* key2 */
        start local 10 // java.lang.String key2
        10: .line 106
            aload 9 /* key1 */
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00.insertRandomCharacters:(Ljava/lang/String;)Ljava/lang/String;
            astore 9 /* key1 */
        11: .line 107
            aload 10 /* key2 */
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00.insertRandomCharacters:(Ljava/lang/String;)Ljava/lang/String;
            astore 10 /* key2 */
        12: .line 109
            aload 9 /* key1 */
            iload 1 /* spaces1 */
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00.insertSpaces:(Ljava/lang/String;I)Ljava/lang/String;
            astore 9 /* key1 */
        13: .line 110
            aload 10 /* key2 */
            iload 2 /* spaces2 */
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00.insertSpaces:(Ljava/lang/String;I)Ljava/lang/String;
            astore 10 /* key2 */
        14: .line 112
            bipush 8
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketUtil.randomBytes:(I)[B
            astore 11 /* key3 */
        start local 11 // byte[] key3
        15: .line 114
            iconst_4
            invokestatic java.nio.ByteBuffer.allocate:(I)Ljava/nio/ByteBuffer;
            astore 12 /* buffer */
        start local 12 // java.nio.ByteBuffer buffer
        16: .line 115
            aload 12 /* buffer */
            iload 5 /* number1 */
            invokevirtual java.nio.ByteBuffer.putInt:(I)Ljava/nio/ByteBuffer;
            pop
        17: .line 116
            aload 12 /* buffer */
            invokevirtual java.nio.ByteBuffer.array:()[B
            astore 13 /* number1Array */
        start local 13 // byte[] number1Array
        18: .line 117
            iconst_4
            invokestatic java.nio.ByteBuffer.allocate:(I)Ljava/nio/ByteBuffer;
            astore 12 /* buffer */
        19: .line 118
            aload 12 /* buffer */
            iload 6 /* number2 */
            invokevirtual java.nio.ByteBuffer.putInt:(I)Ljava/nio/ByteBuffer;
            pop
        20: .line 119
            aload 12 /* buffer */
            invokevirtual java.nio.ByteBuffer.array:()[B
            astore 14 /* number2Array */
        start local 14 // byte[] number2Array
        21: .line 121
            bipush 16
            newarray 8
            astore 15 /* challenge */
        start local 15 // byte[] challenge
        22: .line 122
            aload 13 /* number1Array */
            iconst_0
            aload 15 /* challenge */
            iconst_0
            iconst_4
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
        23: .line 123
            aload 14 /* number2Array */
            iconst_0
            aload 15 /* challenge */
            iconst_4
            iconst_4
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
        24: .line 124
            aload 11 /* key3 */
            iconst_0
            aload 15 /* challenge */
            bipush 8
            bipush 8
            invokestatic java.lang.System.arraycopy:(Ljava/lang/Object;ILjava/lang/Object;II)V
        25: .line 125
            aload 0 /* this */
            aload 15 /* challenge */
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketUtil.md5:([B)[B
            invokestatic io.netty.buffer.Unpooled.wrappedBuffer:([B)Lio/netty/buffer/ByteBuf;
            putfield io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00.expectedChallengeResponseBytes:Lio/netty/buffer/ByteBuf;
        26: .line 128
            aload 0 /* this */
            invokevirtual io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00.uri:()Ljava/net/URI;
            astore 16 /* wsURL */
        start local 16 // java.net.URI wsURL
        27: .line 129
            aload 16 /* wsURL */
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00.rawPath:(Ljava/net/URI;)Ljava/lang/String;
            astore 17 /* path */
        start local 17 // java.lang.String path
        28: .line 132
            new io.netty.handler.codec.http.DefaultFullHttpRequest
            dup
            getstatic io.netty.handler.codec.http.HttpVersion.HTTP_1_1:Lio/netty/handler/codec/http/HttpVersion;
            getstatic io.netty.handler.codec.http.HttpMethod.GET:Lio/netty/handler/codec/http/HttpMethod;
            aload 17 /* path */
            invokespecial io.netty.handler.codec.http.DefaultFullHttpRequest.<init>:(Lio/netty/handler/codec/http/HttpVersion;Lio/netty/handler/codec/http/HttpMethod;Ljava/lang/String;)V
            astore 18 /* request */
        start local 18 // io.netty.handler.codec.http.FullHttpRequest request
        29: .line 133
            aload 18 /* request */
            invokeinterface io.netty.handler.codec.http.FullHttpRequest.headers:()Lio/netty/handler/codec/http/HttpHeaders;
            astore 19 /* headers */
        start local 19 // io.netty.handler.codec.http.HttpHeaders headers
        30: .line 134
            aload 19 /* headers */
            getstatic io.netty.handler.codec.http.HttpHeaderNames.UPGRADE:Lio/netty/util/AsciiString;
            getstatic io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00.WEBSOCKET:Lio/netty/util/AsciiString;
            invokevirtual io.netty.handler.codec.http.HttpHeaders.add:(Ljava/lang/CharSequence;Ljava/lang/Object;)Lio/netty/handler/codec/http/HttpHeaders;
        31: .line 135
            getstatic io.netty.handler.codec.http.HttpHeaderNames.CONNECTION:Lio/netty/util/AsciiString;
            getstatic io.netty.handler.codec.http.HttpHeaderValues.UPGRADE:Lio/netty/util/AsciiString;
            invokevirtual io.netty.handler.codec.http.HttpHeaders.add:(Ljava/lang/CharSequence;Ljava/lang/Object;)Lio/netty/handler/codec/http/HttpHeaders;
        32: .line 136
            getstatic io.netty.handler.codec.http.HttpHeaderNames.HOST:Lio/netty/util/AsciiString;
            aload 16 /* wsURL */
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00.websocketHostValue:(Ljava/net/URI;)Ljava/lang/CharSequence;
            invokevirtual io.netty.handler.codec.http.HttpHeaders.add:(Ljava/lang/CharSequence;Ljava/lang/Object;)Lio/netty/handler/codec/http/HttpHeaders;
        33: .line 137
            getstatic io.netty.handler.codec.http.HttpHeaderNames.ORIGIN:Lio/netty/util/AsciiString;
            aload 16 /* wsURL */
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00.websocketOriginValue:(Ljava/net/URI;)Ljava/lang/CharSequence;
            invokevirtual io.netty.handler.codec.http.HttpHeaders.add:(Ljava/lang/CharSequence;Ljava/lang/Object;)Lio/netty/handler/codec/http/HttpHeaders;
        34: .line 138
            getstatic io.netty.handler.codec.http.HttpHeaderNames.SEC_WEBSOCKET_KEY1:Lio/netty/util/AsciiString;
            aload 9 /* key1 */
            invokevirtual io.netty.handler.codec.http.HttpHeaders.add:(Ljava/lang/CharSequence;Ljava/lang/Object;)Lio/netty/handler/codec/http/HttpHeaders;
        35: .line 139
            getstatic io.netty.handler.codec.http.HttpHeaderNames.SEC_WEBSOCKET_KEY2:Lio/netty/util/AsciiString;
            aload 10 /* key2 */
            invokevirtual io.netty.handler.codec.http.HttpHeaders.add:(Ljava/lang/CharSequence;Ljava/lang/Object;)Lio/netty/handler/codec/http/HttpHeaders;
            pop
        36: .line 141
            aload 0 /* this */
            invokevirtual io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00.expectedSubprotocol:()Ljava/lang/String;
            astore 20 /* expectedSubprotocol */
        start local 20 // java.lang.String expectedSubprotocol
        37: .line 142
            aload 20 /* expectedSubprotocol */
            ifnull 39
            aload 20 /* expectedSubprotocol */
            invokevirtual java.lang.String.isEmpty:()Z
            ifne 39
        38: .line 143
            aload 19 /* headers */
            getstatic io.netty.handler.codec.http.HttpHeaderNames.SEC_WEBSOCKET_PROTOCOL:Lio/netty/util/AsciiString;
            aload 20 /* expectedSubprotocol */
            invokevirtual io.netty.handler.codec.http.HttpHeaders.add:(Ljava/lang/CharSequence;Ljava/lang/Object;)Lio/netty/handler/codec/http/HttpHeaders;
            pop
        39: .line 146
      StackMap locals: io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00 int int int int int int int int java.lang.String java.lang.String byte[] java.nio.ByteBuffer byte[] byte[] byte[] java.net.URI java.lang.String io.netty.handler.codec.http.FullHttpRequest io.netty.handler.codec.http.HttpHeaders java.lang.String
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00.customHeaders:Lio/netty/handler/codec/http/HttpHeaders;
            ifnull 41
        40: .line 147
            aload 19 /* headers */
            aload 0 /* this */
            getfield io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00.customHeaders:Lio/netty/handler/codec/http/HttpHeaders;
            invokevirtual io.netty.handler.codec.http.HttpHeaders.add:(Lio/netty/handler/codec/http/HttpHeaders;)Lio/netty/handler/codec/http/HttpHeaders;
            pop
        41: .line 152
      StackMap locals:
      StackMap stack:
            aload 19 /* headers */
            getstatic io.netty.handler.codec.http.HttpHeaderNames.CONTENT_LENGTH:Lio/netty/util/AsciiString;
            aload 11 /* key3 */
            arraylength
            invokestatic java.lang.Integer.valueOf:(I)Ljava/lang/Integer;
            invokevirtual io.netty.handler.codec.http.HttpHeaders.set:(Ljava/lang/CharSequence;Ljava/lang/Object;)Lio/netty/handler/codec/http/HttpHeaders;
            pop
        42: .line 153
            aload 18 /* request */
            invokeinterface io.netty.handler.codec.http.FullHttpRequest.content:()Lio/netty/buffer/ByteBuf;
            aload 11 /* key3 */
            invokevirtual io.netty.buffer.ByteBuf.writeBytes:([B)Lio/netty/buffer/ByteBuf;
            pop
        43: .line 154
            aload 18 /* request */
            areturn
        end local 20 // java.lang.String expectedSubprotocol
        end local 19 // io.netty.handler.codec.http.HttpHeaders headers
        end local 18 // io.netty.handler.codec.http.FullHttpRequest request
        end local 17 // java.lang.String path
        end local 16 // java.net.URI wsURL
        end local 15 // byte[] challenge
        end local 14 // byte[] number2Array
        end local 13 // byte[] number1Array
        end local 12 // java.nio.ByteBuffer buffer
        end local 11 // byte[] key3
        end local 10 // java.lang.String key2
        end local 9 // java.lang.String key1
        end local 8 // int product2
        end local 7 // int product1
        end local 6 // int number2
        end local 5 // int number1
        end local 4 // int max2
        end local 3 // int max1
        end local 2 // int spaces2
        end local 1 // int spaces1
        end local 0 // io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00 this
      LocalVariableTable:
        Start  End  Slot                 Name  Signature
            0   44     0                 this  Lio/netty/handler/codec/http/websocketx/WebSocketClientHandshaker00;
            1   44     1              spaces1  I
            2   44     2              spaces2  I
            3   44     3                 max1  I
            4   44     4                 max2  I
            5   44     5              number1  I
            6   44     6              number2  I
            7   44     7             product1  I
            8   44     8             product2  I
            9   44     9                 key1  Ljava/lang/String;
           10   44    10                 key2  Ljava/lang/String;
           15   44    11                 key3  [B
           16   44    12               buffer  Ljava/nio/ByteBuffer;
           18   44    13         number1Array  [B
           21   44    14         number2Array  [B
           22   44    15            challenge  [B
           27   44    16                wsURL  Ljava/net/URI;
           28   44    17                 path  Ljava/lang/String;
           29   44    18              request  Lio/netty/handler/codec/http/FullHttpRequest;
           30   44    19              headers  Lio/netty/handler/codec/http/HttpHeaders;
           37   44    20  expectedSubprotocol  Ljava/lang/String;

  protected void verify(io.netty.handler.codec.http.FullHttpResponse);
    descriptor: (Lio/netty/handler/codec/http/FullHttpResponse;)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=5, locals=5, args_size=2
        start local 0 // io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00 this
        start local 1 // io.netty.handler.codec.http.FullHttpResponse response
         0: .line 179
            aload 1 /* response */
            invokeinterface io.netty.handler.codec.http.FullHttpResponse.status:()Lio/netty/handler/codec/http/HttpResponseStatus;
            getstatic io.netty.handler.codec.http.HttpResponseStatus.SWITCHING_PROTOCOLS:Lio/netty/handler/codec/http/HttpResponseStatus;
            invokevirtual io.netty.handler.codec.http.HttpResponseStatus.equals:(Ljava/lang/Object;)Z
            ifne 2
         1: .line 180
            new io.netty.handler.codec.http.websocketx.WebSocketHandshakeException
            dup
            new java.lang.StringBuilder
            dup
            ldc "Invalid handshake response getStatus: "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 1 /* response */
            invokeinterface io.netty.handler.codec.http.FullHttpResponse.status:()Lio/netty/handler/codec/http/HttpResponseStatus;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            invokespecial io.netty.handler.codec.http.websocketx.WebSocketHandshakeException.<init>:(Ljava/lang/String;)V
            athrow
         2: .line 183
      StackMap locals:
      StackMap stack:
            aload 1 /* response */
            invokeinterface io.netty.handler.codec.http.FullHttpResponse.headers:()Lio/netty/handler/codec/http/HttpHeaders;
            astore 2 /* headers */
        start local 2 // io.netty.handler.codec.http.HttpHeaders headers
         3: .line 185
            aload 2 /* headers */
            getstatic io.netty.handler.codec.http.HttpHeaderNames.UPGRADE:Lio/netty/util/AsciiString;
            invokevirtual io.netty.handler.codec.http.HttpHeaders.get:(Ljava/lang/CharSequence;)Ljava/lang/String;
            astore 3 /* upgrade */
        start local 3 // java.lang.CharSequence upgrade
         4: .line 186
            getstatic io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00.WEBSOCKET:Lio/netty/util/AsciiString;
            aload 3 /* upgrade */
            invokevirtual io.netty.util.AsciiString.contentEqualsIgnoreCase:(Ljava/lang/CharSequence;)Z
            ifne 8
         5: .line 187
            new io.netty.handler.codec.http.websocketx.WebSocketHandshakeException
            dup
            new java.lang.StringBuilder
            dup
            ldc "Invalid handshake response upgrade: "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
         6: .line 188
            aload 3 /* upgrade */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/Object;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
         7: .line 187
            invokespecial io.netty.handler.codec.http.websocketx.WebSocketHandshakeException.<init>:(Ljava/lang/String;)V
            athrow
         8: .line 191
      StackMap locals: io.netty.handler.codec.http.HttpHeaders java.lang.CharSequence
      StackMap stack:
            aload 2 /* headers */
            getstatic io.netty.handler.codec.http.HttpHeaderNames.CONNECTION:Lio/netty/util/AsciiString;
            getstatic io.netty.handler.codec.http.HttpHeaderValues.UPGRADE:Lio/netty/util/AsciiString;
            iconst_1
            invokevirtual io.netty.handler.codec.http.HttpHeaders.containsValue:(Ljava/lang/CharSequence;Ljava/lang/CharSequence;Z)Z
            ifne 12
         9: .line 192
            new io.netty.handler.codec.http.websocketx.WebSocketHandshakeException
            dup
            new java.lang.StringBuilder
            dup
            ldc "Invalid handshake response connection: "
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
        10: .line 193
            aload 2 /* headers */
            getstatic io.netty.handler.codec.http.HttpHeaderNames.CONNECTION:Lio/netty/util/AsciiString;
            invokevirtual io.netty.handler.codec.http.HttpHeaders.get:(Ljava/lang/CharSequence;)Ljava/lang/String;
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
        11: .line 192
            invokespecial io.netty.handler.codec.http.websocketx.WebSocketHandshakeException.<init>:(Ljava/lang/String;)V
            athrow
        12: .line 196
      StackMap locals:
      StackMap stack:
            aload 1 /* response */
            invokeinterface io.netty.handler.codec.http.FullHttpResponse.content:()Lio/netty/buffer/ByteBuf;
            astore 4 /* challenge */
        start local 4 // io.netty.buffer.ByteBuf challenge
        13: .line 197
            aload 4 /* challenge */
            aload 0 /* this */
            getfield io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00.expectedChallengeResponseBytes:Lio/netty/buffer/ByteBuf;
            invokevirtual io.netty.buffer.ByteBuf.equals:(Ljava/lang/Object;)Z
            ifne 15
        14: .line 198
            new io.netty.handler.codec.http.websocketx.WebSocketHandshakeException
            dup
            ldc "Invalid challenge"
            invokespecial io.netty.handler.codec.http.websocketx.WebSocketHandshakeException.<init>:(Ljava/lang/String;)V
            athrow
        15: .line 200
      StackMap locals: io.netty.buffer.ByteBuf
      StackMap stack:
            return
        end local 4 // io.netty.buffer.ByteBuf challenge
        end local 3 // java.lang.CharSequence upgrade
        end local 2 // io.netty.handler.codec.http.HttpHeaders headers
        end local 1 // io.netty.handler.codec.http.FullHttpResponse response
        end local 0 // io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00 this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0   16     0       this  Lio/netty/handler/codec/http/websocketx/WebSocketClientHandshaker00;
            0   16     1   response  Lio/netty/handler/codec/http/FullHttpResponse;
            3   16     2    headers  Lio/netty/handler/codec/http/HttpHeaders;
            4   16     3    upgrade  Ljava/lang/CharSequence;
           13   16     4  challenge  Lio/netty/buffer/ByteBuf;
    MethodParameters:
          Name  Flags
      response  

  private static java.lang.String insertRandomCharacters(java.lang.String);
    descriptor: (Ljava/lang/String;)Ljava/lang/String;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=4, locals=8, args_size=1
        start local 0 // java.lang.String key
         0: .line 203
            iconst_1
            bipush 12
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketUtil.randomNumber:(II)I
            istore 1 /* count */
        start local 1 // int count
         1: .line 205
            iload 1 /* count */
            newarray 5
            astore 2 /* randomChars */
        start local 2 // char[] randomChars
         2: .line 206
            iconst_0
            istore 3 /* randCount */
        start local 3 // int randCount
         3: .line 207
            goto 9
         4: .line 208
      StackMap locals: int char[] int
      StackMap stack:
            invokestatic java.lang.Math.random:()D
            ldc 126.0
            dmul
            ldc 33.0
            dadd
            d2i
            istore 4 /* rand */
        start local 4 // int rand
         5: .line 209
            bipush 33
            iload 4 /* rand */
            if_icmpge 6
            iload 4 /* rand */
            bipush 47
            if_icmplt 7
      StackMap locals: int
      StackMap stack:
         6: bipush 58
            iload 4 /* rand */
            if_icmpge 9
            iload 4 /* rand */
            bipush 126
            if_icmpge 9
         7: .line 210
      StackMap locals:
      StackMap stack:
            aload 2 /* randomChars */
            iload 3 /* randCount */
            iload 4 /* rand */
            i2c
            castore
         8: .line 211
            iinc 3 /* randCount */ 1
        end local 4 // int rand
         9: .line 207
      StackMap locals:
      StackMap stack:
            iload 3 /* randCount */
            iload 1 /* count */
            if_icmplt 4
        10: .line 215
            iconst_0
            istore 4 /* i */
        start local 4 // int i
        11: goto 17
        12: .line 216
      StackMap locals: int
      StackMap stack:
            iconst_0
            aload 0 /* key */
            invokevirtual java.lang.String.length:()I
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketUtil.randomNumber:(II)I
            istore 5 /* split */
        start local 5 // int split
        13: .line 217
            aload 0 /* key */
            iconst_0
            iload 5 /* split */
            invokevirtual java.lang.String.substring:(II)Ljava/lang/String;
            astore 6 /* part1 */
        start local 6 // java.lang.String part1
        14: .line 218
            aload 0 /* key */
            iload 5 /* split */
            invokevirtual java.lang.String.substring:(I)Ljava/lang/String;
            astore 7 /* part2 */
        start local 7 // java.lang.String part2
        15: .line 219
            new java.lang.StringBuilder
            dup
            aload 6 /* part1 */
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            aload 2 /* randomChars */
            iload 4 /* i */
            caload
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            aload 7 /* part2 */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 0 /* key */
        end local 7 // java.lang.String part2
        end local 6 // java.lang.String part1
        end local 5 // int split
        16: .line 215
            iinc 4 /* i */ 1
      StackMap locals:
      StackMap stack:
        17: iload 4 /* i */
            iload 1 /* count */
            if_icmplt 12
        end local 4 // int i
        18: .line 222
            aload 0 /* key */
            areturn
        end local 3 // int randCount
        end local 2 // char[] randomChars
        end local 1 // int count
        end local 0 // java.lang.String key
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0   19     0          key  Ljava/lang/String;
            1   19     1        count  I
            2   19     2  randomChars  [C
            3   19     3    randCount  I
            5    9     4         rand  I
           11   18     4            i  I
           13   16     5        split  I
           14   16     6        part1  Ljava/lang/String;
           15   16     7        part2  Ljava/lang/String;
    MethodParameters:
      Name  Flags
      key   

  private static java.lang.String insertSpaces(java.lang.String, int);
    descriptor: (Ljava/lang/String;I)Ljava/lang/String;
    flags: (0x000a) ACC_PRIVATE, ACC_STATIC
    Code:
      stack=3, locals=6, args_size=2
        start local 0 // java.lang.String key
        start local 1 // int spaces
         0: .line 226
            iconst_0
            istore 2 /* i */
        start local 2 // int i
         1: goto 7
         2: .line 227
      StackMap locals: int
      StackMap stack:
            iconst_1
            aload 0 /* key */
            invokevirtual java.lang.String.length:()I
            iconst_1
            isub
            invokestatic io.netty.handler.codec.http.websocketx.WebSocketUtil.randomNumber:(II)I
            istore 3 /* split */
        start local 3 // int split
         3: .line 228
            aload 0 /* key */
            iconst_0
            iload 3 /* split */
            invokevirtual java.lang.String.substring:(II)Ljava/lang/String;
            astore 4 /* part1 */
        start local 4 // java.lang.String part1
         4: .line 229
            aload 0 /* key */
            iload 3 /* split */
            invokevirtual java.lang.String.substring:(I)Ljava/lang/String;
            astore 5 /* part2 */
        start local 5 // java.lang.String part2
         5: .line 230
            new java.lang.StringBuilder
            dup
            aload 4 /* part1 */
            invokestatic java.lang.String.valueOf:(Ljava/lang/Object;)Ljava/lang/String;
            invokespecial java.lang.StringBuilder.<init>:(Ljava/lang/String;)V
            bipush 32
            invokevirtual java.lang.StringBuilder.append:(C)Ljava/lang/StringBuilder;
            aload 5 /* part2 */
            invokevirtual java.lang.StringBuilder.append:(Ljava/lang/String;)Ljava/lang/StringBuilder;
            invokevirtual java.lang.StringBuilder.toString:()Ljava/lang/String;
            astore 0 /* key */
        end local 5 // java.lang.String part2
        end local 4 // java.lang.String part1
        end local 3 // int split
         6: .line 226
            iinc 2 /* i */ 1
      StackMap locals:
      StackMap stack:
         7: iload 2 /* i */
            iload 1 /* spaces */
            if_icmplt 2
        end local 2 // int i
         8: .line 233
            aload 0 /* key */
            areturn
        end local 1 // int spaces
        end local 0 // java.lang.String key
      LocalVariableTable:
        Start  End  Slot    Name  Signature
            0    9     0     key  Ljava/lang/String;
            0    9     1  spaces  I
            1    8     2       i  I
            3    6     3   split  I
            4    6     4   part1  Ljava/lang/String;
            5    6     5   part2  Ljava/lang/String;
    MethodParameters:
        Name  Flags
      key     
      spaces  

  protected io.netty.handler.codec.http.websocketx.WebSocketFrameDecoder newWebsocketDecoder();
    descriptor: ()Lio/netty/handler/codec/http/websocketx/WebSocketFrameDecoder;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=3, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00 this
         0: .line 238
            new io.netty.handler.codec.http.websocketx.WebSocket00FrameDecoder
            dup
            aload 0 /* this */
            invokevirtual io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00.maxFramePayloadLength:()I
            invokespecial io.netty.handler.codec.http.websocketx.WebSocket00FrameDecoder.<init>:(I)V
            areturn
        end local 0 // io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/http/websocketx/WebSocketClientHandshaker00;

  protected io.netty.handler.codec.http.websocketx.WebSocketFrameEncoder newWebSocketEncoder();
    descriptor: ()Lio/netty/handler/codec/http/websocketx/WebSocketFrameEncoder;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00 this
         0: .line 243
            new io.netty.handler.codec.http.websocketx.WebSocket00FrameEncoder
            dup
            invokespecial io.netty.handler.codec.http.websocketx.WebSocket00FrameEncoder.<init>:()V
            areturn
        end local 0 // io.netty.handler.codec.http.websocketx.WebSocketClientHandshaker00 this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/handler/codec/http/websocketx/WebSocketClientHandshaker00;
}
SourceFile: "WebSocketClientHandshaker00.java"