stop method

@override Future<void> stop()

Implementation

@override
Future<void> stop() async {
  _logger?.finest("(LongPolling transport) Stopping polling.");

  // Tell receiving loop to stop, abort any current request, and then wait for it to finish
  _running = false;
  _pollAbort.abort();

  try {
    await _receiving;

    // Send DELETE to clean up long polling on the server
    _logger
        ?.finest("(LongPolling transport) sending DELETE request to $_url.");

    final deleteOptions = SignalRHttpRequest();
    final token = await _getAccessToken();
    _updateHeaderToken(deleteOptions, token);
    await _httpClient.delete(_url, options: deleteOptions);

    _logger?.finest("(LongPolling transport) DELETE request sent.");
  } finally {
    _logger?.finest("(LongPolling transport) Stop finished.");

    // Raise close event here instead of in polling
    // It needs to happen after the DELETE request is sent
    _raiseOnClose();
  }
}