Fix some errors

Author: wtgodbe

src/Servers/IIS/IIS/test/testassets/InProcessWebSite/Startup.WebSockets.cs

@@ -62,7 +62,7 @@ private void WebSocketEcho(IApplicationBuilder app)
         {
             var ws = await Upgrade(context);
 #if FORWARDCOMPAT
-            var appLifetime = app.ApplicationServices.GetRequiredService<Microsoft.AspNetCore.Hosting.IApplicationLifetime>();
+            var appLifetime = app.ApplicationServices.GetRequiredService<IHostApplicationLifetime>();
 #else
             var appLifetime = app.ApplicationServices.GetRequiredService<IHostApplicationLifetime>();
 #endif

src/Servers/IIS/IIS/test/testassets/InProcessWebSite/Startup.cs

@@ -55,9 +55,9 @@ public void ConfigureServices(IServiceCollection serviceCollection)
         serviceCollection.AddHttpContextAccessor();
     }
 #if FORWARDCOMPAT
-    private async Task ContentRootPath(HttpContext ctx) => await ctx.Response.WriteAsync(ctx.RequestServices.GetService<Microsoft.AspNetCore.Hosting.IHostingEnvironment>().ContentRootPath);
+    private async Task ContentRootPath(HttpContext ctx) => await ctx.Response.WriteAsync(ctx.RequestServices.GetService<IWebHostEnvironment>().ContentRootPath);
 
-    private async Task WebRootPath(HttpContext ctx) => await ctx.Response.WriteAsync(ctx.RequestServices.GetService<Microsoft.AspNetCore.Hosting.IHostingEnvironment>().WebRootPath);
+    private async Task WebRootPath(HttpContext ctx) => await ctx.Response.WriteAsync(ctx.RequestServices.GetService<IWebHostEnvironment>().WebRootPath);
 #else
     private async Task ContentRootPath(HttpContext ctx) => await ctx.Response.WriteAsync(ctx.RequestServices.GetService<IWebHostEnvironment>().ContentRootPath);
 
@@ -175,7 +175,7 @@ public async Task WaitingRequestCount(HttpContext context)
     public Task CreateFile(HttpContext context)
     {
 #if FORWARDCOMPAT
-        var hostingEnv = context.RequestServices.GetService<Microsoft.AspNetCore.Hosting.IHostingEnvironment>();
+        var hostingEnv = context.RequestServices.GetService<IWebHostEnvironment>();
 #else
         var hostingEnv = context.RequestServices.GetService<IWebHostEnvironment>();
 #endif
@@ -597,7 +597,7 @@ private async Task WaitForAppToStartShuttingDown(HttpContext ctx)
     {
         await ctx.Response.WriteAsync("test1");
 #if FORWARDCOMPAT
-        var lifetime = ctx.RequestServices.GetService<Microsoft.AspNetCore.Hosting.IApplicationLifetime>();
+        var lifetime = ctx.RequestServices.GetService<IHostApplicationLifetime>();
 #else
         var lifetime = ctx.RequestServices.GetService<IHostApplicationLifetime>();
 #endif
@@ -680,8 +680,9 @@ private async Task ReadAndWriteEchoLines(HttpContext ctx)
     private async Task ReadAndWriteEchoLinesNoBuffering(HttpContext ctx)
     {
 #if FORWARDCOMPAT
-        var feature = ctx.Features.Get<IHttpBufferingFeature>();
-        feature.DisableResponseBuffering();
+        var feature = ctx.Features.Get<IHttpResponseBodyFeature>();
+        feature.DisableBuffering();
+        Assert.True(ctx.Request.CanHaveBody());
 #else
         var feature = ctx.Features.Get<IHttpResponseBodyFeature>();
         feature.DisableBuffering();
@@ -993,7 +994,7 @@ private async Task Shutdown(HttpContext ctx)
     {
         await ctx.Response.WriteAsync("Shutting down");
 #if FORWARDCOMPAT
-        ctx.RequestServices.GetService<Microsoft.AspNetCore.Hosting.IApplicationLifetime>().StopApplication();
+        ctx.RequestServices.GetService<IHostApplicationLifetime>().StopApplication();
 #else
         ctx.RequestServices.GetService<IHostApplicationLifetime>().StopApplication();
 #endif