onError method

@override void onError(DioError err, ErrorInterceptorHandler handler)

Called when an exception was occurred during the request.

Implementation

@override
// ignore: deprecated_member_use
void onError(DioError err, ErrorInterceptorHandler handler) {
  EventTracker()
      .addEvent(getEvent(Events.RESPONSE_VALIDATION, EventTracker.sourceSdk));
  if (err.response != null) {
    var response = err.response!;
    var responseHeaders = response.headers.map;
    // store set-cookie
    responseHeaders.forEach((key, value) {
      if (key.toLowerCase() == "set-cookie") {
        setDataDomeCookie(value.first);
      }
    });
    var ddHeaders =
        (responseHeaders.keys.any((key) => key.toLowerCase() == 'x-dd-b') ||
            responseHeaders.keys
                .any((key) => key.toLowerCase() == 'x-sf-cc-x-dd-b'));
    var code = response.statusCode;
    if ((code == 401 || code == 403) && (ddHeaders)) {
      //blocked by datadome
      failedRequests.add(RetriableRequest(dio, err, handler));
      if (isDisplayed) {
        return;
      }

      ResponsePage? responsePage = responsePageFromResponse(response);

      // set the DataDome cookie value (cid) to datadomeCookie variable
      getDataDomeCookie().then((value) =>
          CaptchaPage.datadomeCookie = value.split("datadome=")[1]);

      if (context != null && responsePage != null) {
        _showChallenge(context!, responsePage, (String cookie) {
          didResolveCaptcha(cookie);
        });
      } else {
        // calling `DataDomeInterceptor.withCallback` the customer handle the captcha display and dismissal
        Widget widget = new CaptchaPage(
            responsePage: responsePage,
            onCaptchaResolved: (String cookie) {
              didResolveCaptcha(cookie);
            });
        if (onCaptchaDisplay != null) {
          onCaptchaDisplay!(widget);
        }
      }
      return;
    }
  } else {
    DataDomeLogger.error("Null DioError response info");
    return;
  }

  super.onError(err, handler);
}