close method

@override Future<void> close()

Closes the channel. Idempotent.

Implementation

@override
Future<void> close() async {
  if (_closed) return;
  _closed = true;
  _current = ConnectionState.disconnected;
  if (!_state.isClosed) await _state.close();
  if (!_incoming.isClosed) await _incoming.close();
}