Add Hostable Web Core based inprocess test server (#853)

Author: pakrym

benchmarks/IIS.Performance/IIS.Performance.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <!-- Using shorter assembly name instead of Microsoft.AspNetCore.Server.Kestrel.Performance because https://github.com/dotnet/BenchmarkDotNet/issues/498 -->
@@ -15,13 +15,21 @@
     <Content Include="..\..\test\IISIntegration.FunctionalTests\AppHostConfig\*.config" CopyToOutputDirectory="PreserveNewest" />
   </ItemGroup>
 
+  <ItemGroup Condition="'$(OS)' == 'Windows_NT'">
+    <None Include="$(MSBuildThisFileDirectory)..\..\src\AspNetCoreModuleV2\InProcessRequestHandler\bin\$(Configuration)\x64\aspnetcorev2_inprocess.dll" CopyToOutputDirectory="PreserveNewest" Visible="true" Link="%(FileName)%(Extension)" />
+    <None Include="$(MSBuildThisFileDirectory)..\..\src\AspNetCoreModuleV2\InProcessRequestHandler\bin\$(Configuration)\x64\aspnetcorev2_inprocess.pdb" CopyToOutputDirectory="PreserveNewest" Visible="true" Link="%(FileName)%(Extension)" />
+    <None Include="$(MSBuildThisFileDirectory)..\..\src\AspNetCoreModuleV2\AspNetCore\bin\$(Configuration)\x64\aspnetcorev2.dll" CopyToOutputDirectory="PreserveNewest" Visible="true" Link="%(FileName)%(Extension)" />
+    <None Include="$(MSBuildThisFileDirectory)..\..\src\AspNetCoreModuleV2\AspNetCore\bin\$(Configuration)\x64\aspnetcorev2.pdb" CopyToOutputDirectory="PreserveNewest" Visible="true" Link="%(FileName)%(Extension)" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\..\src\Microsoft.AspNetCore.Server.IISIntegration\Microsoft.AspNetCore.Server.IISIntegration.csproj" />
+    <ProjectReference Include="..\..\test\IISIntegration.FunctionalTests\IISIntegration.FunctionalTests.csproj" />
     <ProjectReference Include="..\..\test\WebSites\**\*.csproj">
       <ReferenceOutputAssembly>False</ReferenceOutputAssembly>
     </ProjectReference>
   </ItemGroup>
-  
+
   <ItemGroup>
     <PackageReference Include="BenchmarkDotNet" Version="$(BenchmarkDotNetPackageVersion)" />
     <PackageReference Include="Microsoft.AspNetCore.BenchmarkRunner.Sources" PrivateAssets="All" Version="$(MicrosoftAspNetCoreBenchmarkRunnerSourcesPackageVersion)" />

benchmarks/IIS.Performance/PlaintextBenchmark.cs

@@ -0,0 +1,73 @@
+// Copyright (c) .NET Foundation. All rights reserved.
+// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.
+
+using System;
+using System.Net.Http;
+using System.Text;
+using System.Threading.Tasks;
+using BenchmarkDotNet.Attributes;
+using IISIntegration.FunctionalTests.Utilities;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.AspNetCore.Http;
+using Microsoft.Extensions.Logging;
+
+namespace Microsoft.AspNetCore.Server.IIS.Performance
+{
+    [AspNetCoreBenchmark]
+    public class PlaintextBenchmark
+    {
+        private TestServer _server;
+
+        private HttpClient _client;
+
+        [GlobalSetup]
+        public void Setup()
+        {
+            _server = TestServer.Create(builder => builder.UseMiddleware<PlaintextMiddleware>(), new LoggerFactory()).GetAwaiter().GetResult();
+            // Recreate client, TestServer.Client has additional logging that can hurt performance
+            _client = new HttpClient()
+            {
+                BaseAddress = _server.HttpClient.BaseAddress
+            };
+        }
+
+        [Benchmark]
+        public async Task Plaintext()
+        {
+            await _client.GetAsync("/plaintext");
+        }
+
+        // Copied from https://github.com/aspnet/benchmarks/blob/dev/src/Benchmarks/Middleware/PlaintextMiddleware.cs
+        public class PlaintextMiddleware
+        {
+            private static readonly PathString _path = new PathString("/plaintext");
+            private static readonly byte[] _helloWorldPayload = Encoding.UTF8.GetBytes("Hello, World!");
+
+            private readonly RequestDelegate _next;
+
+            public PlaintextMiddleware(RequestDelegate next)
+            {
+                _next = next;
+            }
+
+            public Task Invoke(HttpContext httpContext)
+            {
+                if (httpContext.Request.Path.StartsWithSegments(_path, StringComparison.Ordinal))
+                {
+                    return WriteResponse(httpContext.Response);
+                }
+
+                return _next(httpContext);
+            }
+
+            public static Task WriteResponse(HttpResponse response)
+            {
+                var payloadLength = _helloWorldPayload.Length;
+                response.StatusCode = 200;
+                response.ContentType = "text/plain";
+                response.ContentLength = payloadLength;
+                return response.Body.WriteAsync(_helloWorldPayload, 0, payloadLength);
+            }
+}
+    }
+}

benchmarks/IIS.Performance/StartupTimeBenchmark.cs

@@ -5,7 +5,6 @@
 using System.Net.Http;
 using System.Threading.Tasks;
 using BenchmarkDotNet.Attributes;
-using BenchmarkDotNet.Running;
 using Microsoft.AspNetCore.Server.IntegrationTesting;
 using Microsoft.AspNetCore.Testing;
 using Microsoft.Extensions.Logging.Abstractions;