release method

void release()

释放连接

Implementation

void release() {
  YTLog.i('YTIM.release');
  _connectState = IMConnectState.IDLE;
  _streamController?.sink.add(IMConnectState.IDLE);
  _needReconnect = false;
  _channel?.sink.close();
  _streamController?.close();
  _streamController = null;
  _singleton = null;
}