NioTask (Netty API Reference (5.0.0.Alpha4))

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

See Also:

NioHandler#register(SelectableChannel, int, NioTask)

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`channelReady(C ch, SelectionKey key)`	Invoked when the `SelectableChannel` has been selected by the `Selector`.
`void`	`channelUnregistered(C ch, 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,
                  SelectionKey key)
           throws Exception
```
    Invoked when the SelectableChannel has been selected by the Selector.
    
    Throws:
    
    Exception
  - channelUnregistered
```
void channelUnregistered(C ch,
                         Throwable cause)
                  throws 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:
    
    Exception