beforeRequest method

@override Future<void> beforeRequest(RequestOptions options, RequestInterceptorHandler handler)

Runs immediately before the request is sent. Default forwards unchanged.

Typical uses: ensure valid access token, attach headers, refresh and retry by calling handler.resolve with a cloned request after refresh.

Implementation

@override
Future<void> beforeRequest(
  RequestOptions options,
  RequestInterceptorHandler handler,
) async {
  if (onBeforeRequest != null) {
    await onBeforeRequest!(options, handler);
  } else {
    handler.next(options);
  }
}