dispose method

@override void dispose()

Disposes backend resources.

Implementation

@override
void dispose() {
  if (_disposed) return;
  _disposed = true;
  _socketSubscription?.cancel();
  _socketSubscription = null;
  _inputController.close();
  _resizeController.close();
  _shutdownController.close();
  if (closeSocketOnDispose) {
    socket.destroy();
  }
}