start method

Implementation

@override
Future<bool> start() async {
  if (_state == SessionHostState.running) {
    return true;
  }

  if (_state == SessionHostState.disposed) {
    // Terminal, and silent for the same reason as a refused connection:
    // `dispose` already closed `serverEvents`.
    return false;
  }

  try {
    if (ownsTransport) {
      await onStart();
    }

    _markRunning();

    if (ownsTransport) {
      await onStarted();
    }

    return true;
  } on Exception catch (e) {
    // Only exceptions: a failed bind is reported as an event, a programming
    // error (a missing transport hook, say) must surface.
    addServerEvent(
      ServerEvent(
        type: ServerEventType.error,
        message: startFailureMessage(e),
      ),
    );
    return false;
  }
}