Angular2 watch for 302 redirect when fetching resource

Question

I have a requirement to pull a few resources from another domain held by my company. I want to pull secured HTML content with GET requests.

When a user is signed out

Answer 1

This is my working code for redirecting to ServiceData. Angular2(4) and ASP net Core.

private post(url: string, data?: any) {
    return this.http.post(url, data, { headers: this.headers })
      .map(response => this.extractData(response, true));
}

private extractData(res: Response, mapJson = true) {
    let body: any = res;
    // redirect
    if (body.url.search('ReturnUrl') != -1) {
        let url = new URL(body.url);

        // get patch redirect simple /account/login
        let pathname = url.pathname;

        // get params redirect simple ?ReturnUrl=%2Fapi%2Fitems%2FGetitems
        let search = url.search;

        // 1 navigate with params
        this.router.navigate.navigate([pathname], { queryParams: { returnUrl: search } });

        // OR ...

        // 2 navigate only pathname
        this.router.navigate.navigate([pathname]);
        return {};
    }            

    if (mapJson) {
        body = body.json();
    }
    return body || {};
}