connect method

Future<bool> connect({ int port = 9100, Duration? timeout = const Duration(seconds: 5), bool canRetry = true, bool throwError = false, })

Implementation

Future<bool> connect({
  int port = 9100,
  Duration? timeout = const Duration(seconds: 5),
  bool canRetry = true,
  bool throwError = false,
}) async {
  port  = addressPort;
  if (_socket != null && _isConnect) {
    return true;
  }
  _close();
  try {
    _socket = await Socket.connect(
      address,
      port,
      sourcePort: _sourcePort ?? 0,
      timeout: timeout,
    );
    _isConnect = true;
    _sourcePort = _socket?.port;
    _socketSubscription = _socket?.listen(
          (event) {
        //暂无处理
      },
      onDone: () {
        _close();
      },
      onError: (e) {
        _close();
      },
    );
  } catch (e) {
    _close();
    if (canRetry) {
      final isInUseException =
      e.toString().contains('Address already in use');
      if (isInUseException) {
        //需要使用新的 sourcePort
        _sourcePort = null;
      }
      return connect(
        port: port,//port
        timeout: timeout,
        canRetry: false,
        throwError: throwError,
      );
    } else {
      if (throwError) {
        rethrow;
      }
    }
  }
  return _isConnect;
}