disconnect method

@override Future<void> disconnect()

Gracefully closes the connection.

Implementation

@override
Future<void> disconnect() async {
  _setStatus(ChannelStatus.disconnecting);
  await _connectedSub?.cancel();
  await _childSub?.cancel();
  _connectedSub = null;
  _childSub = null;
  _setStatus(ChannelStatus.disconnected);
}