Use headers

Startup.cs

@@ -24,6 +24,11 @@ namespace NikolaNet
         public void ConfigureServices(IServiceCollection services)
         {
             services.AddRazorPages();
+                    services.Configure<ForwardedHeadersOptions>(options =>
+        {
+            options.ForwardedHeaders =
+                ForwardedHeaders.XForwardedFor | ForwardedHeaders.XForwardedProto;
+        });
         }
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
@@ -32,12 +37,14 @@ namespace NikolaNet
             if (env.IsDevelopment())
             {
                 app.UseDeveloperExceptionPage();
+                 app.UseForwardedHeaders();
             }
             else
             {
                 app.UseExceptionHandler("/Error");
                 // The default HSTS value is 30 days. You may want to change this for production scenarios, see https://aka.ms/aspnetcore-hsts.
                 app.UseHsts();
+                 app.UseForwardedHeaders();
             }
 
             app.UseHttpsRedirection();