@Override
public void setWriteListener(WriteListener writeListener) {
if (!_channel.getState().isAsync()) throw new IllegalStateException("!ASYNC");
if (_state.compareAndSet(OutputState.OPEN, OutputState.READY)) {
_writeListener = writeListener;
if (_channel.getState().onWritePossible()) _channel.execute(_channel);
} else throw new IllegalStateException();
}
protected void scheduleDispatch() {
_channel.execute(_channel);
}