From 685f7da0911acb85853552756a4847a6a2a908d2 Mon Sep 17 00:00:00 2001
From: Steve Sanderson <SteveSandersonMS@users.noreply.github.com>
Date: Thu, 16 Nov 2017 10:05:26 +0000
Subject: [PATCH] Revert "Clean up how IHttpContextAccessor is added" because
 this API only exists in 2.1.x, and this branch is for 2.0.1

This reverts commit e583a17ef8381a15ae9f59635dae7e0cfbdd2aac.
---
 .../PrerenderingServiceCollectionExtensions.cs         | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/Microsoft.AspNetCore.SpaServices/Prerendering/PrerenderingServiceCollectionExtensions.cs b/src/Microsoft.AspNetCore.SpaServices/Prerendering/PrerenderingServiceCollectionExtensions.cs
index d6a6743..2a6eb0b 100644
--- a/src/Microsoft.AspNetCore.SpaServices/Prerendering/PrerenderingServiceCollectionExtensions.cs
+++ b/src/Microsoft.AspNetCore.SpaServices/Prerendering/PrerenderingServiceCollectionExtensions.cs
@@ -1,4 +1,10 @@
-using Microsoft.AspNetCore.SpaServices.Prerendering;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.NodeServices;
+using Microsoft.AspNetCore.SpaServices.Prerendering;
+using Microsoft.Extensions.DependencyInjection.Extensions;
 
 namespace Microsoft.Extensions.DependencyInjection
 {
@@ -14,7 +20,7 @@ namespace Microsoft.Extensions.DependencyInjection
         /// <param name="serviceCollection">The <see cref="IServiceCollection"/>.</param>
         public static void AddSpaPrerenderer(this IServiceCollection serviceCollection)
         {
-            serviceCollection.AddHttpContextAccessor();
+            serviceCollection.TryAddSingleton<IHttpContextAccessor, HttpContextAccessor>();
             serviceCollection.AddSingleton<ISpaPrerenderer, DefaultSpaPrerenderer>();
         }
     }