Understanding of DefaultOAuthInterceptor

[Hummelbeine]

Hi there,

this is more a question than an issue.

I have an application split into an angular frontend and a spring-boot rest backend and try to integrate a keycloak oauth2/oidc authentication. I had the following plan:

• just secure the rest endpoints
• enforce a login only when the rest endpoints require one

So I thought an interceptor is a good place to init a login. I'm using the DefaultOAuthInterceptor which detects a 401/403 as I expected but then it does a redirect to http://localhost:4200/login.

And I cannot find the place where this behaviour is implemented nor how I can substitute it by starting the initial login flow.

Any hints are welcome. :-)

Thanks,
Stephan

[jeroenheijmans]

Please check out #414 which might already answer your question.

[Hummelbeine]

Hi Jeroen,

thank's for your fast reply. I already brought a HttpInterceptor in place and it works when receiving a HTTP 200 or 404.

When receiving a HTTP 401, I can see my interceptor logging when receiving the request.

public intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
  console.log('intercepting request...');
  console.log(request);

  return next.handle(request).do(
    (event: HttpEvent<any>) => {
      if (event instanceof HttpResponse) {
        console.log('receiving response...');
        console.log(event);
      }
    },
    (error: any) => {
      if (error instanceof HttpErrorResponse) {
        console.log('receiving error response...');
        console.error(error);
      }
    }
  );
}

But the logging when receiving the response does not take place.

Instead there is that redirect to http://localhost:4200/login which happens even when I totally remove the usage of angular-oauth2-oidc.

Maybe it is a HttpClient related behaviour?

Thanks,
Stephan

[jeroenheijmans]

Hmm, if you get such specific unexpected behavior no longer related to angular-oauth2-oidc, I suggest further trimming down the code into a minimal repro (e.g. a StackBlitz example), and possibly asking a question on Stack Overflow about the behavior. Good luck!

[jeroenheijmans]

Hoping you resolved the issue in the mean time? Thinking we might close this issue, unless you still have an open issue? (In which case we'd need steps to reproduce the problem, otherwise it's not really possible to help...)

[jeroenheijmans]

Going to tidy up and close the issue. Let us know if the problem persists, and if so please try to provide a minimal repro (here, to reopen things, or in a fresh issue). Thanks!