title: Is it possible to use UseProxyToSpaDevelopmentServer from inside of local service fabric cluster?
body: <p>I was trying to use UseProxyToSpaDevelopmentServer option from inside of local service fabric cluster and I got no results. I literally didn't get any requests from server, when I was trying to access SPA application by route <code>http://localhost:9000/UI/</code>. I'm using asp.net core 2.1 angular template. I use Razor to create an initial Angular page.</p>
  
  <p>My Startup class looks like:</p>
  
  <pre><code>public void Configure(IApplicationBuilder app, IHostingEnvironment env)
      {
          if (env.IsDevelopment())
          {
              app.UseDeveloperExceptionPage();
          }
          else
          {
              app.UseExceptionHandler("/Error");
          }
  
          app.UseStaticFiles();
          app.UseSpaStaticFiles();
  
          app.UseMvc(routes =&gt;
          {
              routes.MapRoute(
                  name: "default",
                  template: "{controller}/{action=Index}/{id?}");
          });
  
          app.UseSpa(spa =&gt;
          {
              // To learn more about options for serving an Angular SPA from ASP.NET Core,
              // see https://go.microsoft.com/fwlink/?linkid=864501
              spa.Options.SourcePath = "ClientApp";
  
              if (env.IsDevelopment())
              {
                  spa.UseProxyToSpaDevelopmentServer("http://localhost:4200/");
              }
          });
      }
  </code></pre>
  
  <p>I'm running application in development mode for sure.
  I tried to get any request by launching basic node js server as well as angular app with <code>ng serve</code> command, but as I said got no results.</p>