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.channel.nio.AbstractNioChannel extends io.netty.channel.AbstractChannel
  minor version: 0
  major version: 59
  flags: flags: (0x0421) ACC_PUBLIC, ACC_SUPER, ACC_ABSTRACT
  this_class: io.netty.channel.nio.AbstractNioChannel
  super_class: io.netty.channel.AbstractChannel
{
  private static final io.netty.util.internal.logging.InternalLogger logger;
    descriptor: Lio/netty/util/internal/logging/InternalLogger;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private static final java.nio.channels.ClosedChannelException DO_CLOSE_CLOSED_CHANNEL_EXCEPTION;
    descriptor: Ljava/nio/channels/ClosedChannelException;
    flags: (0x001a) ACC_PRIVATE, ACC_STATIC, ACC_FINAL

  private final java.nio.channels.SelectableChannel ch;
    descriptor: Ljava/nio/channels/SelectableChannel;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  protected final int readInterestOp;
    descriptor: I
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL

  volatile java.nio.channels.SelectionKey selectionKey;
    descriptor: Ljava/nio/channels/SelectionKey;
    flags: (0x0040) ACC_VOLATILE

  boolean readPending;
    descriptor: Z
    flags: (0x0000) 

  private final java.lang.Runnable clearReadPendingRunnable;
    descriptor: Ljava/lang/Runnable;
    flags: (0x0012) ACC_PRIVATE, ACC_FINAL

  private io.netty.channel.ChannelPromise connectPromise;
    descriptor: Lio/netty/channel/ChannelPromise;
    flags: (0x0002) ACC_PRIVATE

  private java.util.concurrent.ScheduledFuture<?> connectTimeoutFuture;
    descriptor: Ljava/util/concurrent/ScheduledFuture;
    flags: (0x0002) ACC_PRIVATE
    Signature: Ljava/util/concurrent/ScheduledFuture<*>;

  private java.net.SocketAddress requestedRemoteAddress;
    descriptor: Ljava/net/SocketAddress;
    flags: (0x0002) ACC_PRIVATE

  static final boolean $assertionsDisabled;
    descriptor: Z
    flags: (0x1018) ACC_STATIC, ACC_FINAL, ACC_SYNTHETIC

  static void <clinit>();
    descriptor: ()V
    flags: (0x0008) ACC_STATIC
    Code:
      stack=3, locals=0, args_size=0
         0: .line 49
            ldc Lio/netty/channel/nio/AbstractNioChannel;
            invokevirtual java.lang.Class.desiredAssertionStatus:()Z
            ifne 1
            iconst_1
            goto 2
      StackMap locals:
      StackMap stack:
         1: iconst_0
      StackMap locals:
      StackMap stack: int
         2: putstatic io.netty.channel.nio.AbstractNioChannel.$assertionsDisabled:Z
         3: .line 52
            ldc Lio/netty/channel/nio/AbstractNioChannel;
            invokestatic io.netty.util.internal.logging.InternalLoggerFactory.getInstance:(Ljava/lang/Class;)Lio/netty/util/internal/logging/InternalLogger;
         4: .line 51
            putstatic io.netty.channel.nio.AbstractNioChannel.logger:Lio/netty/util/internal/logging/InternalLogger;
         5: .line 55
            new java.nio.channels.ClosedChannelException
            dup
            invokespecial java.nio.channels.ClosedChannelException.<init>:()V
            ldc Lio/netty/channel/nio/AbstractNioChannel;
            ldc "doClose()"
         6: .line 54
            invokestatic io.netty.util.internal.ThrowableUtil.unknownStackTrace:(Ljava/lang/Throwable;Ljava/lang/Class;Ljava/lang/String;)Ljava/lang/Throwable;
            checkcast java.nio.channels.ClosedChannelException
            putstatic io.netty.channel.nio.AbstractNioChannel.DO_CLOSE_CLOSED_CHANNEL_EXCEPTION:Ljava/nio/channels/ClosedChannelException;
         7: .line 55
            return
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  protected void <init>(io.netty.channel.Channel, java.nio.channels.SelectableChannel, int);
    descriptor: (Lio/netty/channel/Channel;Ljava/nio/channels/SelectableChannel;I)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=4, locals=6, args_size=4
        start local 0 // io.netty.channel.nio.AbstractNioChannel this
        start local 1 // io.netty.channel.Channel parent
        start local 2 // java.nio.channels.SelectableChannel ch
        start local 3 // int readInterestOp
         0: .line 84
            aload 0 /* this */
            aload 1 /* parent */
            invokespecial io.netty.channel.AbstractChannel.<init>:(Lio/netty/channel/Channel;)V
         1: .line 61
            aload 0 /* this */
            new io.netty.channel.nio.AbstractNioChannel$1
            dup
            aload 0 /* this */
            invokespecial io.netty.channel.nio.AbstractNioChannel$1.<init>:(Lio/netty/channel/nio/AbstractNioChannel;)V
            putfield io.netty.channel.nio.AbstractNioChannel.clearReadPendingRunnable:Ljava/lang/Runnable;
         2: .line 85
            aload 0 /* this */
            aload 2 /* ch */
            putfield io.netty.channel.nio.AbstractNioChannel.ch:Ljava/nio/channels/SelectableChannel;
         3: .line 86
            aload 0 /* this */
            iload 3 /* readInterestOp */
            putfield io.netty.channel.nio.AbstractNioChannel.readInterestOp:I
         4: .line 88
            aload 2 /* ch */
            iconst_0
            invokevirtual java.nio.channels.SelectableChannel.configureBlocking:(Z)Ljava/nio/channels/SelectableChannel;
            pop
         5: .line 89
            goto 15
      StackMap locals: io.netty.channel.nio.AbstractNioChannel io.netty.channel.Channel java.nio.channels.SelectableChannel int
      StackMap stack: java.io.IOException
         6: astore 4 /* e */
        start local 4 // java.io.IOException e
         7: .line 91
            aload 2 /* ch */
            invokevirtual java.nio.channels.SelectableChannel.close:()V
         8: .line 92
            goto 14
      StackMap locals: io.netty.channel.nio.AbstractNioChannel io.netty.channel.Channel java.nio.channels.SelectableChannel int java.io.IOException
      StackMap stack: java.io.IOException
         9: astore 5 /* e2 */
        start local 5 // java.io.IOException e2
        10: .line 93
            getstatic io.netty.channel.nio.AbstractNioChannel.logger:Lio/netty/util/internal/logging/InternalLogger;
            invokeinterface io.netty.util.internal.logging.InternalLogger.isWarnEnabled:()Z
            ifeq 14
        11: .line 94
            getstatic io.netty.channel.nio.AbstractNioChannel.logger:Lio/netty/util/internal/logging/InternalLogger;
        12: .line 95
            ldc "Failed to close a partially initialized socket."
            aload 5 /* e2 */
        13: .line 94
            invokeinterface io.netty.util.internal.logging.InternalLogger.warn:(Ljava/lang/String;Ljava/lang/Throwable;)V
        end local 5 // java.io.IOException e2
        14: .line 99
      StackMap locals:
      StackMap stack:
            new io.netty.channel.ChannelException
            dup
            ldc "Failed to enter non-blocking mode."
            aload 4 /* e */
            invokespecial io.netty.channel.ChannelException.<init>:(Ljava/lang/String;Ljava/lang/Throwable;)V
            athrow
        end local 4 // java.io.IOException e
        15: .line 101
      StackMap locals:
      StackMap stack:
            return
        end local 3 // int readInterestOp
        end local 2 // java.nio.channels.SelectableChannel ch
        end local 1 // io.netty.channel.Channel parent
        end local 0 // io.netty.channel.nio.AbstractNioChannel this
      LocalVariableTable:
        Start  End  Slot            Name  Signature
            0   16     0            this  Lio/netty/channel/nio/AbstractNioChannel;
            0   16     1          parent  Lio/netty/channel/Channel;
            0   16     2              ch  Ljava/nio/channels/SelectableChannel;
            0   16     3  readInterestOp  I
            7   15     4               e  Ljava/io/IOException;
           10   14     5              e2  Ljava/io/IOException;
      Exception table:
        from    to  target  type
           4     5       6  Class java.io.IOException
           7     8       9  Class java.io.IOException
    MethodParameters:
                Name  Flags
      parent          
      ch              
      readInterestOp  

  public boolean isOpen();
    descriptor: ()Z
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.channel.nio.AbstractNioChannel this
         0: .line 105
            aload 0 /* this */
            getfield io.netty.channel.nio.AbstractNioChannel.ch:Ljava/nio/channels/SelectableChannel;
            invokevirtual java.nio.channels.SelectableChannel.isOpen:()Z
            ireturn
        end local 0 // io.netty.channel.nio.AbstractNioChannel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/channel/nio/AbstractNioChannel;

  public io.netty.channel.nio.AbstractNioChannel$NioUnsafe unsafe();
    descriptor: ()Lio/netty/channel/nio/AbstractNioChannel$NioUnsafe;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.channel.nio.AbstractNioChannel this
         0: .line 110
            aload 0 /* this */
            invokespecial io.netty.channel.AbstractChannel.unsafe:()Lio/netty/channel/Channel$Unsafe;
            checkcast io.netty.channel.nio.AbstractNioChannel$NioUnsafe
            areturn
        end local 0 // io.netty.channel.nio.AbstractNioChannel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/channel/nio/AbstractNioChannel;

  protected java.nio.channels.SelectableChannel javaChannel();
    descriptor: ()Ljava/nio/channels/SelectableChannel;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.channel.nio.AbstractNioChannel this
         0: .line 114
            aload 0 /* this */
            getfield io.netty.channel.nio.AbstractNioChannel.ch:Ljava/nio/channels/SelectableChannel;
            areturn
        end local 0 // io.netty.channel.nio.AbstractNioChannel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/channel/nio/AbstractNioChannel;

  public io.netty.channel.nio.NioEventLoop eventLoop();
    descriptor: ()Lio/netty/channel/nio/NioEventLoop;
    flags: (0x0001) ACC_PUBLIC
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.channel.nio.AbstractNioChannel this
         0: .line 119
            aload 0 /* this */
            invokespecial io.netty.channel.AbstractChannel.eventLoop:()Lio/netty/channel/EventLoop;
            checkcast io.netty.channel.nio.NioEventLoop
            areturn
        end local 0 // io.netty.channel.nio.AbstractNioChannel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/channel/nio/AbstractNioChannel;

  protected java.nio.channels.SelectionKey selectionKey();
    descriptor: ()Ljava/nio/channels/SelectionKey;
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // io.netty.channel.nio.AbstractNioChannel this
         0: .line 126
            getstatic io.netty.channel.nio.AbstractNioChannel.$assertionsDisabled:Z
            ifne 1
            aload 0 /* this */
            getfield io.netty.channel.nio.AbstractNioChannel.selectionKey:Ljava/nio/channels/SelectionKey;
            ifnonnull 1
            new java.lang.AssertionError
            dup
            invokespecial java.lang.AssertionError.<init>:()V
            athrow
         1: .line 127
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.channel.nio.AbstractNioChannel.selectionKey:Ljava/nio/channels/SelectionKey;
            areturn
        end local 0 // io.netty.channel.nio.AbstractNioChannel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lio/netty/channel/nio/AbstractNioChannel;

  protected boolean isReadPending();
    descriptor: ()Z
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=1, args_size=1
        start local 0 // io.netty.channel.nio.AbstractNioChannel this
         0: .line 136
            aload 0 /* this */
            getfield io.netty.channel.nio.AbstractNioChannel.readPending:Z
            ireturn
        end local 0 // io.netty.channel.nio.AbstractNioChannel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/channel/nio/AbstractNioChannel;
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()

  protected void setReadPending(boolean);
    descriptor: (Z)V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=5, locals=3, args_size=2
        start local 0 // io.netty.channel.nio.AbstractNioChannel this
        start local 1 // boolean readPending
         0: .line 145
            aload 0 /* this */
            invokevirtual io.netty.channel.nio.AbstractNioChannel.isRegistered:()Z
            ifeq 7
         1: .line 146
            aload 0 /* this */
            invokevirtual io.netty.channel.nio.AbstractNioChannel.eventLoop:()Lio/netty/channel/nio/NioEventLoop;
            astore 2 /* eventLoop */
        start local 2 // io.netty.channel.EventLoop eventLoop
         2: .line 147
            aload 2 /* eventLoop */
            invokeinterface io.netty.channel.EventLoop.inEventLoop:()Z
            ifeq 5
         3: .line 148
            aload 0 /* this */
            iload 1 /* readPending */
            invokevirtual io.netty.channel.nio.AbstractNioChannel.setReadPending0:(Z)V
         4: .line 149
            goto 8
         5: .line 150
      StackMap locals: io.netty.channel.EventLoop
      StackMap stack:
            aload 2 /* eventLoop */
            new io.netty.channel.nio.AbstractNioChannel$2
            dup
            aload 0 /* this */
            iload 1 /* readPending */
            invokespecial io.netty.channel.nio.AbstractNioChannel$2.<init>:(Lio/netty/channel/nio/AbstractNioChannel;Z)V
            invokeinterface io.netty.channel.EventLoop.execute:(Ljava/lang/Runnable;)V
        end local 2 // io.netty.channel.EventLoop eventLoop
         6: .line 157
            goto 8
         7: .line 161
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            iload 1 /* readPending */
            putfield io.netty.channel.nio.AbstractNioChannel.readPending:Z
         8: .line 163
      StackMap locals:
      StackMap stack:
            return
        end local 1 // boolean readPending
        end local 0 // io.netty.channel.nio.AbstractNioChannel this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    9     0         this  Lio/netty/channel/nio/AbstractNioChannel;
            0    9     1  readPending  Z
            2    6     2    eventLoop  Lio/netty/channel/EventLoop;
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()
    MethodParameters:
             Name  Flags
      readPending  final

  protected final void clearReadPending();
    descriptor: ()V
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL
    Code:
      stack=2, locals=2, args_size=1
        start local 0 // io.netty.channel.nio.AbstractNioChannel this
         0: .line 169
            aload 0 /* this */
            invokevirtual io.netty.channel.nio.AbstractNioChannel.isRegistered:()Z
            ifeq 7
         1: .line 170
            aload 0 /* this */
            invokevirtual io.netty.channel.nio.AbstractNioChannel.eventLoop:()Lio/netty/channel/nio/NioEventLoop;
            astore 1 /* eventLoop */
        start local 1 // io.netty.channel.EventLoop eventLoop
         2: .line 171
            aload 1 /* eventLoop */
            invokeinterface io.netty.channel.EventLoop.inEventLoop:()Z
            ifeq 5
         3: .line 172
            aload 0 /* this */
            invokevirtual io.netty.channel.nio.AbstractNioChannel.clearReadPending0:()V
         4: .line 173
            goto 8
         5: .line 174
      StackMap locals: io.netty.channel.EventLoop
      StackMap stack:
            aload 1 /* eventLoop */
            aload 0 /* this */
            getfield io.netty.channel.nio.AbstractNioChannel.clearReadPendingRunnable:Ljava/lang/Runnable;
            invokeinterface io.netty.channel.EventLoop.execute:(Ljava/lang/Runnable;)V
        end local 1 // io.netty.channel.EventLoop eventLoop
         6: .line 176
            goto 8
         7: .line 180
      StackMap locals:
      StackMap stack:
            aload 0 /* this */
            iconst_0
            putfield io.netty.channel.nio.AbstractNioChannel.readPending:Z
         8: .line 182
      StackMap locals:
      StackMap stack:
            return
        end local 0 // io.netty.channel.nio.AbstractNioChannel this
      LocalVariableTable:
        Start  End  Slot       Name  Signature
            0    9     0       this  Lio/netty/channel/nio/AbstractNioChannel;
            2    6     1  eventLoop  Lio/netty/channel/EventLoop;

  private void setReadPending0(boolean);
    descriptor: (Z)V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=2, args_size=2
        start local 0 // io.netty.channel.nio.AbstractNioChannel this
        start local 1 // boolean readPending
         0: .line 185
            aload 0 /* this */
            iload 1 /* readPending */
            putfield io.netty.channel.nio.AbstractNioChannel.readPending:Z
         1: .line 186
            iload 1 /* readPending */
            ifne 3
         2: .line 187
            aload 0 /* this */
            invokevirtual io.netty.channel.nio.AbstractNioChannel.unsafe:()Lio/netty/channel/nio/AbstractNioChannel$NioUnsafe;
            checkcast io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe
            invokevirtual io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.removeReadOp:()V
         3: .line 189
      StackMap locals:
      StackMap stack:
            return
        end local 1 // boolean readPending
        end local 0 // io.netty.channel.nio.AbstractNioChannel this
      LocalVariableTable:
        Start  End  Slot         Name  Signature
            0    4     0         this  Lio/netty/channel/nio/AbstractNioChannel;
            0    4     1  readPending  Z
    MethodParameters:
             Name  Flags
      readPending  

  private void clearReadPending0();
    descriptor: ()V
    flags: (0x0002) ACC_PRIVATE
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // io.netty.channel.nio.AbstractNioChannel this
         0: .line 192
            aload 0 /* this */
            iconst_0
            putfield io.netty.channel.nio.AbstractNioChannel.readPending:Z
         1: .line 193
            aload 0 /* this */
            invokevirtual io.netty.channel.nio.AbstractNioChannel.unsafe:()Lio/netty/channel/nio/AbstractNioChannel$NioUnsafe;
            checkcast io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe
            invokevirtual io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.removeReadOp:()V
         2: .line 194
            return
        end local 0 // io.netty.channel.nio.AbstractNioChannel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    3     0  this  Lio/netty/channel/nio/AbstractNioChannel;

  protected boolean isCompatible(io.netty.channel.EventLoop);
    descriptor: (Lio/netty/channel/EventLoop;)Z
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=1, locals=2, args_size=2
        start local 0 // io.netty.channel.nio.AbstractNioChannel this
        start local 1 // io.netty.channel.EventLoop loop
         0: .line 378
            aload 1 /* loop */
            instanceof io.netty.channel.nio.NioEventLoop
            ireturn
        end local 1 // io.netty.channel.EventLoop loop
        end local 0 // io.netty.channel.nio.AbstractNioChannel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    1     0  this  Lio/netty/channel/nio/AbstractNioChannel;
            0    1     1  loop  Lio/netty/channel/EventLoop;
    MethodParameters:
      Name  Flags
      loop  

  protected void doRegister();
    descriptor: ()V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=5, locals=3, args_size=1
        start local 0 // io.netty.channel.nio.AbstractNioChannel this
         0: .line 383
            iconst_0
            istore 1 /* selected */
        start local 1 // boolean selected
         1: .line 386
      StackMap locals: int
      StackMap stack:
            aload 0 /* this */
            aload 0 /* this */
            invokevirtual io.netty.channel.nio.AbstractNioChannel.javaChannel:()Ljava/nio/channels/SelectableChannel;
            aload 0 /* this */
            invokevirtual io.netty.channel.nio.AbstractNioChannel.eventLoop:()Lio/netty/channel/nio/NioEventLoop;
            invokevirtual io.netty.channel.nio.NioEventLoop.unwrappedSelector:()Ljava/nio/channels/Selector;
            iconst_0
            aload 0 /* this */
            invokevirtual java.nio.channels.SelectableChannel.register:(Ljava/nio/channels/Selector;ILjava/lang/Object;)Ljava/nio/channels/SelectionKey;
            putfield io.netty.channel.nio.AbstractNioChannel.selectionKey:Ljava/nio/channels/SelectionKey;
         2: .line 387
            return
         3: .line 388
      StackMap locals:
      StackMap stack: java.nio.channels.CancelledKeyException
            astore 2 /* e */
        start local 2 // java.nio.channels.CancelledKeyException e
         4: .line 389
            iload 1 /* selected */
            ifne 8
         5: .line 392
            aload 0 /* this */
            invokevirtual io.netty.channel.nio.AbstractNioChannel.eventLoop:()Lio/netty/channel/nio/NioEventLoop;
            invokevirtual io.netty.channel.nio.NioEventLoop.selectNow:()I
            pop
         6: .line 393
            iconst_1
            istore 1 /* selected */
         7: .line 394
            goto 1
         8: .line 397
      StackMap locals: java.nio.channels.CancelledKeyException
      StackMap stack:
            aload 2 /* e */
            athrow
        end local 2 // java.nio.channels.CancelledKeyException e
        end local 1 // boolean selected
        end local 0 // io.netty.channel.nio.AbstractNioChannel this
      LocalVariableTable:
        Start  End  Slot      Name  Signature
            0    9     0      this  Lio/netty/channel/nio/AbstractNioChannel;
            1    9     1  selected  Z
            4    9     2         e  Ljava/nio/channels/CancelledKeyException;
      Exception table:
        from    to  target  type
           1     2       3  Class java.nio.channels.CancelledKeyException
    Exceptions:
      throws java.lang.Exception

  protected void doDeregister();
    descriptor: ()V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=1, args_size=1
        start local 0 // io.netty.channel.nio.AbstractNioChannel this
         0: .line 405
            aload 0 /* this */
            invokevirtual io.netty.channel.nio.AbstractNioChannel.eventLoop:()Lio/netty/channel/nio/NioEventLoop;
            aload 0 /* this */
            invokevirtual io.netty.channel.nio.AbstractNioChannel.selectionKey:()Ljava/nio/channels/SelectionKey;
            invokevirtual io.netty.channel.nio.NioEventLoop.cancel:(Ljava/nio/channels/SelectionKey;)V
         1: .line 406
            return
        end local 0 // io.netty.channel.nio.AbstractNioChannel this
      LocalVariableTable:
        Start  End  Slot  Name  Signature
            0    2     0  this  Lio/netty/channel/nio/AbstractNioChannel;
    Exceptions:
      throws java.lang.Exception

  protected void doBeginRead();
    descriptor: ()V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=3, locals=3, args_size=1
        start local 0 // io.netty.channel.nio.AbstractNioChannel this
         0: .line 411
            aload 0 /* this */
            getfield io.netty.channel.nio.AbstractNioChannel.selectionKey:Ljava/nio/channels/SelectionKey;
            astore 1 /* selectionKey */
        start local 1 // java.nio.channels.SelectionKey selectionKey
         1: .line 412
            aload 1 /* selectionKey */
            invokevirtual java.nio.channels.SelectionKey.isValid:()Z
            ifne 3
         2: .line 413
            return
         3: .line 416
      StackMap locals: java.nio.channels.SelectionKey
      StackMap stack:
            aload 0 /* this */
            iconst_1
            putfield io.netty.channel.nio.AbstractNioChannel.readPending:Z
         4: .line 418
            aload 1 /* selectionKey */
            invokevirtual java.nio.channels.SelectionKey.interestOps:()I
            istore 2 /* interestOps */
        start local 2 // int interestOps
         5: .line 419
            iload 2 /* interestOps */
            aload 0 /* this */
            getfield io.netty.channel.nio.AbstractNioChannel.readInterestOp:I
            iand
            ifne 7
         6: .line 420
            aload 1 /* selectionKey */
            iload 2 /* interestOps */
            aload 0 /* this */
            getfield io.netty.channel.nio.AbstractNioChannel.readInterestOp:I
            ior
            invokevirtual java.nio.channels.SelectionKey.interestOps:(I)Ljava/nio/channels/SelectionKey;
            pop
         7: .line 422
      StackMap locals: int
      StackMap stack:
            return
        end local 2 // int interestOps
        end local 1 // java.nio.channels.SelectionKey selectionKey
        end local 0 // io.netty.channel.nio.AbstractNioChannel this
      LocalVariableTable:
        Start  End  Slot          Name  Signature
            0    8     0          this  Lio/netty/channel/nio/AbstractNioChannel;
            1    8     1  selectionKey  Ljava/nio/channels/SelectionKey;
            5    8     2   interestOps  I
    Exceptions:
      throws java.lang.Exception

  protected abstract boolean doConnect(java.net.SocketAddress, java.net.SocketAddress);
    descriptor: (Ljava/net/SocketAddress;Ljava/net/SocketAddress;)Z
    flags: (0x0404) ACC_PROTECTED, ACC_ABSTRACT
    Exceptions:
      throws java.lang.Exception
    MethodParameters:
               Name  Flags
      remoteAddress  
      localAddress   

  protected abstract void doFinishConnect();
    descriptor: ()V
    flags: (0x0404) ACC_PROTECTED, ACC_ABSTRACT
    Exceptions:
      throws java.lang.Exception

  protected final io.netty.buffer.ByteBuf newDirectBuffer(io.netty.buffer.ByteBuf);
    descriptor: (Lio/netty/buffer/ByteBuf;)Lio/netty/buffer/ByteBuf;
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL
    Code:
      stack=4, locals=5, args_size=2
        start local 0 // io.netty.channel.nio.AbstractNioChannel this
        start local 1 // io.netty.buffer.ByteBuf buf
         0: .line 440
            aload 1 /* buf */
            invokevirtual io.netty.buffer.ByteBuf.readableBytes:()I
            istore 2 /* readableBytes */
        start local 2 // int readableBytes
         1: .line 441
            iload 2 /* readableBytes */
            ifne 4
         2: .line 442
            aload 1 /* buf */
            invokestatic io.netty.util.ReferenceCountUtil.safeRelease:(Ljava/lang/Object;)V
         3: .line 443
            getstatic io.netty.buffer.Unpooled.EMPTY_BUFFER:Lio/netty/buffer/ByteBuf;
            areturn
         4: .line 446
      StackMap locals: int
      StackMap stack:
            aload 0 /* this */
            invokevirtual io.netty.channel.nio.AbstractNioChannel.alloc:()Lio/netty/buffer/ByteBufAllocator;
            astore 3 /* alloc */
        start local 3 // io.netty.buffer.ByteBufAllocator alloc
         5: .line 447
            aload 3 /* alloc */
            invokeinterface io.netty.buffer.ByteBufAllocator.isDirectBufferPooled:()Z
            ifeq 10
         6: .line 448
            aload 3 /* alloc */
            iload 2 /* readableBytes */
            invokeinterface io.netty.buffer.ByteBufAllocator.directBuffer:(I)Lio/netty/buffer/ByteBuf;
            astore 4 /* directBuf */
        start local 4 // io.netty.buffer.ByteBuf directBuf
         7: .line 449
            aload 4 /* directBuf */
            aload 1 /* buf */
            aload 1 /* buf */
            invokevirtual io.netty.buffer.ByteBuf.readerIndex:()I
            iload 2 /* readableBytes */
            invokevirtual io.netty.buffer.ByteBuf.writeBytes:(Lio/netty/buffer/ByteBuf;II)Lio/netty/buffer/ByteBuf;
            pop
         8: .line 450
            aload 1 /* buf */
            invokestatic io.netty.util.ReferenceCountUtil.safeRelease:(Ljava/lang/Object;)V
         9: .line 451
            aload 4 /* directBuf */
            areturn
        end local 4 // io.netty.buffer.ByteBuf directBuf
        10: .line 454
      StackMap locals: io.netty.buffer.ByteBufAllocator
      StackMap stack:
            invokestatic io.netty.buffer.ByteBufUtil.threadLocalDirectBuffer:()Lio/netty/buffer/ByteBuf;
            astore 4 /* directBuf */
        start local 4 // io.netty.buffer.ByteBuf directBuf
        11: .line 455
            aload 4 /* directBuf */
            ifnull 15
        12: .line 456
            aload 4 /* directBuf */
            aload 1 /* buf */
            aload 1 /* buf */
            invokevirtual io.netty.buffer.ByteBuf.readerIndex:()I
            iload 2 /* readableBytes */
            invokevirtual io.netty.buffer.ByteBuf.writeBytes:(Lio/netty/buffer/ByteBuf;II)Lio/netty/buffer/ByteBuf;
            pop
        13: .line 457
            aload 1 /* buf */
            invokestatic io.netty.util.ReferenceCountUtil.safeRelease:(Ljava/lang/Object;)V
        14: .line 458
            aload 4 /* directBuf */
            areturn
        15: .line 462
      StackMap locals: io.netty.buffer.ByteBuf
      StackMap stack:
            aload 1 /* buf */
            areturn
        end local 4 // io.netty.buffer.ByteBuf directBuf
        end local 3 // io.netty.buffer.ByteBufAllocator alloc
        end local 2 // int readableBytes
        end local 1 // io.netty.buffer.ByteBuf buf
        end local 0 // io.netty.channel.nio.AbstractNioChannel this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0   16     0           this  Lio/netty/channel/nio/AbstractNioChannel;
            0   16     1            buf  Lio/netty/buffer/ByteBuf;
            1   16     2  readableBytes  I
            5   16     3          alloc  Lio/netty/buffer/ByteBufAllocator;
            7   10     4      directBuf  Lio/netty/buffer/ByteBuf;
           11   16     4      directBuf  Lio/netty/buffer/ByteBuf;
    MethodParameters:
      Name  Flags
      buf   

  protected final io.netty.buffer.ByteBuf newDirectBuffer(io.netty.util.ReferenceCounted, io.netty.buffer.ByteBuf);
    descriptor: (Lio/netty/util/ReferenceCounted;Lio/netty/buffer/ByteBuf;)Lio/netty/buffer/ByteBuf;
    flags: (0x0014) ACC_PROTECTED, ACC_FINAL
    Code:
      stack=4, locals=6, args_size=3
        start local 0 // io.netty.channel.nio.AbstractNioChannel this
        start local 1 // io.netty.util.ReferenceCounted holder
        start local 2 // io.netty.buffer.ByteBuf buf
         0: .line 472
            aload 2 /* buf */
            invokevirtual io.netty.buffer.ByteBuf.readableBytes:()I
            istore 3 /* readableBytes */
        start local 3 // int readableBytes
         1: .line 473
            iload 3 /* readableBytes */
            ifne 4
         2: .line 474
            aload 1 /* holder */
            invokestatic io.netty.util.ReferenceCountUtil.safeRelease:(Ljava/lang/Object;)V
         3: .line 475
            getstatic io.netty.buffer.Unpooled.EMPTY_BUFFER:Lio/netty/buffer/ByteBuf;
            areturn
         4: .line 478
      StackMap locals: int
      StackMap stack:
            aload 0 /* this */
            invokevirtual io.netty.channel.nio.AbstractNioChannel.alloc:()Lio/netty/buffer/ByteBufAllocator;
            astore 4 /* alloc */
        start local 4 // io.netty.buffer.ByteBufAllocator alloc
         5: .line 479
            aload 4 /* alloc */
            invokeinterface io.netty.buffer.ByteBufAllocator.isDirectBufferPooled:()Z
            ifeq 10
         6: .line 480
            aload 4 /* alloc */
            iload 3 /* readableBytes */
            invokeinterface io.netty.buffer.ByteBufAllocator.directBuffer:(I)Lio/netty/buffer/ByteBuf;
            astore 5 /* directBuf */
        start local 5 // io.netty.buffer.ByteBuf directBuf
         7: .line 481
            aload 5 /* directBuf */
            aload 2 /* buf */
            aload 2 /* buf */
            invokevirtual io.netty.buffer.ByteBuf.readerIndex:()I
            iload 3 /* readableBytes */
            invokevirtual io.netty.buffer.ByteBuf.writeBytes:(Lio/netty/buffer/ByteBuf;II)Lio/netty/buffer/ByteBuf;
            pop
         8: .line 482
            aload 1 /* holder */
            invokestatic io.netty.util.ReferenceCountUtil.safeRelease:(Ljava/lang/Object;)V
         9: .line 483
            aload 5 /* directBuf */
            areturn
        end local 5 // io.netty.buffer.ByteBuf directBuf
        10: .line 486
      StackMap locals: io.netty.buffer.ByteBufAllocator
      StackMap stack:
            invokestatic io.netty.buffer.ByteBufUtil.threadLocalDirectBuffer:()Lio/netty/buffer/ByteBuf;
            astore 5 /* directBuf */
        start local 5 // io.netty.buffer.ByteBuf directBuf
        11: .line 487
            aload 5 /* directBuf */
            ifnull 15
        12: .line 488
            aload 5 /* directBuf */
            aload 2 /* buf */
            aload 2 /* buf */
            invokevirtual io.netty.buffer.ByteBuf.readerIndex:()I
            iload 3 /* readableBytes */
            invokevirtual io.netty.buffer.ByteBuf.writeBytes:(Lio/netty/buffer/ByteBuf;II)Lio/netty/buffer/ByteBuf;
            pop
        13: .line 489
            aload 1 /* holder */
            invokestatic io.netty.util.ReferenceCountUtil.safeRelease:(Ljava/lang/Object;)V
        14: .line 490
            aload 5 /* directBuf */
            areturn
        15: .line 494
      StackMap locals: io.netty.buffer.ByteBuf
      StackMap stack:
            aload 1 /* holder */
            aload 2 /* buf */
            if_acmpeq 18
        16: .line 496
            aload 2 /* buf */
            invokevirtual io.netty.buffer.ByteBuf.retain:()Lio/netty/buffer/ByteBuf;
            pop
        17: .line 497
            aload 1 /* holder */
            invokestatic io.netty.util.ReferenceCountUtil.safeRelease:(Ljava/lang/Object;)V
        18: .line 500
      StackMap locals:
      StackMap stack:
            aload 2 /* buf */
            areturn
        end local 5 // io.netty.buffer.ByteBuf directBuf
        end local 4 // io.netty.buffer.ByteBufAllocator alloc
        end local 3 // int readableBytes
        end local 2 // io.netty.buffer.ByteBuf buf
        end local 1 // io.netty.util.ReferenceCounted holder
        end local 0 // io.netty.channel.nio.AbstractNioChannel this
      LocalVariableTable:
        Start  End  Slot           Name  Signature
            0   19     0           this  Lio/netty/channel/nio/AbstractNioChannel;
            0   19     1         holder  Lio/netty/util/ReferenceCounted;
            0   19     2            buf  Lio/netty/buffer/ByteBuf;
            1   19     3  readableBytes  I
            5   19     4          alloc  Lio/netty/buffer/ByteBufAllocator;
            7   10     5      directBuf  Lio/netty/buffer/ByteBuf;
           11   19     5      directBuf  Lio/netty/buffer/ByteBuf;
    MethodParameters:
        Name  Flags
      holder  
      buf     

  protected void doClose();
    descriptor: ()V
    flags: (0x0004) ACC_PROTECTED
    Code:
      stack=2, locals=3, args_size=1
        start local 0 // io.netty.channel.nio.AbstractNioChannel this
         0: .line 505
            aload 0 /* this */
            getfield io.netty.channel.nio.AbstractNioChannel.connectPromise:Lio/netty/channel/ChannelPromise;
            astore 1 /* promise */
        start local 1 // io.netty.channel.ChannelPromise promise
         1: .line 506
            aload 1 /* promise */
            ifnull 4
         2: .line 508
            aload 1 /* promise */
            getstatic io.netty.channel.nio.AbstractNioChannel.DO_CLOSE_CLOSED_CHANNEL_EXCEPTION:Ljava/nio/channels/ClosedChannelException;
            invokeinterface io.netty.channel.ChannelPromise.tryFailure:(Ljava/lang/Throwable;)Z
            pop
         3: .line 509
            aload 0 /* this */
            aconst_null
            putfield io.netty.channel.nio.AbstractNioChannel.connectPromise:Lio/netty/channel/ChannelPromise;
         4: .line 512
      StackMap locals: io.netty.channel.ChannelPromise
      StackMap stack:
            aload 0 /* this */
            getfield io.netty.channel.nio.AbstractNioChannel.connectTimeoutFuture:Ljava/util/concurrent/ScheduledFuture;
            astore 2 /* future */
        start local 2 // java.util.concurrent.ScheduledFuture future
         5: .line 513
            aload 2 /* future */
            ifnull 8
         6: .line 514
            aload 2 /* future */
            iconst_0
            invokeinterface java.util.concurrent.ScheduledFuture.cancel:(Z)Z
            pop
         7: .line 515
            aload 0 /* this */
            aconst_null
            putfield io.netty.channel.nio.AbstractNioChannel.connectTimeoutFuture:Ljava/util/concurrent/ScheduledFuture;
         8: .line 517
      StackMap locals: java.util.concurrent.ScheduledFuture
      StackMap stack:
            return
        end local 2 // java.util.concurrent.ScheduledFuture future
        end local 1 // io.netty.channel.ChannelPromise promise
        end local 0 // io.netty.channel.nio.AbstractNioChannel this
      LocalVariableTable:
        Start  End  Slot     Name  Signature
            0    9     0     this  Lio/netty/channel/nio/AbstractNioChannel;
            1    9     1  promise  Lio/netty/channel/ChannelPromise;
            5    9     2   future  Ljava/util/concurrent/ScheduledFuture<*>;
    Exceptions:
      throws java.lang.Exception

  public io.netty.channel.Channel$Unsafe unsafe();
    descriptor: ()Lio/netty/channel/Channel$Unsafe;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual io.netty.channel.nio.AbstractNioChannel.unsafe:()Lio/netty/channel/nio/AbstractNioChannel$NioUnsafe;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature

  public io.netty.channel.EventLoop eventLoop();
    descriptor: ()Lio/netty/channel/EventLoop;
    flags: (0x1041) ACC_PUBLIC, ACC_BRIDGE, ACC_SYNTHETIC
    Code:
      stack=1, locals=1, args_size=1
         0: .line 1
            aload 0
            invokevirtual io.netty.channel.nio.AbstractNioChannel.eventLoop:()Lio/netty/channel/nio/NioEventLoop;
            areturn
      LocalVariableTable:
        Start  End  Slot  Name  Signature
}
SourceFile: "AbstractNioChannel.java"
NestMembers:
  io.netty.channel.nio.AbstractNioChannel$1  io.netty.channel.nio.AbstractNioChannel$2  io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe  io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe$1  io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe$2  io.netty.channel.nio.AbstractNioChannel$NioUnsafe
InnerClasses:
  public abstract Unsafe = io.netty.channel.Channel$Unsafe of io.netty.channel.Channel
  io.netty.channel.nio.AbstractNioChannel$1
  io.netty.channel.nio.AbstractNioChannel$2
  protected abstract AbstractNioUnsafe = io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe of io.netty.channel.nio.AbstractNioChannel
  public abstract NioUnsafe = io.netty.channel.nio.AbstractNioChannel$NioUnsafe of io.netty.channel.nio.AbstractNioChannel