Prerendering server-side code can now issue redirections. Fixes #280

src/Microsoft.AspNetCore.SpaServices/Prerendering/PrerenderTagHelper.cs

@@ -85,6 +85,15 @@ namespace Microsoft.AspNetCore.SpaServices.Prerendering
                 unencodedPathAndQuery,
                 CustomDataParameter,
                 TimeoutMillisecondsParameter);
+
+            if (!string.IsNullOrEmpty(result.RedirectUrl))
+            {
+                // It's a redirection
+                ViewContext.HttpContext.Response.Redirect(result.RedirectUrl);
+                return;
+            }
+
+            // It's some HTML to inject
             output.Content.SetHtmlContent(result.Html);
 
             // Also attach any specified globals to the 'window' object. This is useful for transferring

src/Microsoft.AspNetCore.SpaServices/Prerendering/RenderToStringResult.cs

@@ -6,5 +6,6 @@ namespace Microsoft.AspNetCore.SpaServices.Prerendering
     {
         public JObject Globals { get; set; }
         public string Html { get; set; }
+        public string RedirectUrl { get; set; }
     }
 }