NioTask (Netty API Reference (4.2.0.Final))

```
public interface NioTask<C extends java.nio.channels.SelectableChannel>
```
An arbitrary task that can be executed by NioEventLoop when a SelectableChannel becomes ready.

See Also:

NioEventLoop.register(SelectableChannel, int, NioTask)

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`channelReady(C ch, java.nio.channels.SelectionKey key)`	Invoked when the `SelectableChannel` has been selected by the `Selector`.
`void`	`channelUnregistered(C ch, java.lang.Throwable cause)`	Invoked when the `SelectionKey` of the specified `SelectableChannel` has been cancelled and thus this `NioTask` will not be notified anymore.

- Method Detail
  - channelReady
```
void channelReady(C ch,
                  java.nio.channels.SelectionKey key)
           throws java.lang.Exception
```
    Invoked when the SelectableChannel has been selected by the Selector.
    
    Throws:
    
    java.lang.Exception
  - channelUnregistered
```
void channelUnregistered(C ch,
                         java.lang.Throwable cause)
                  throws java.lang.Exception
```
    Invoked when the SelectionKey of the specified SelectableChannel has been cancelled and thus this NioTask will not be notified anymore.
    
    Parameters:
    
    cause - the cause of the unregistration. null if a user called SelectionKey.cancel() or the event loop has been shut down.
    
    Throws:
    
    java.lang.Exception