Changes needed to use Brotli in ASP.NET Core

Brotli-ASP.NET-Core-Compression.sln

@@ -1,9 +1,14 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
-VisualStudioVersion = 15.0.26228.4
+VisualStudioVersion = 15.0.26430.16
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Brotli-ASP.NET-Core-Compression", "Brotli-ASP.NET-Core-Compression\Brotli-ASP.NET-Core-Compression.csproj", "{FABF9A3D-A219-486C-B912-0B479ECF2208}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Brotli-ASP.NET-Core-Compression", "Brotli-ASP.NET-Core-Compression\Brotli-ASP.NET-Core-Compression.csproj", "{FABF9A3D-A219-486C-B912-0B479ECF2208}"
+EndProject
+Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{F053F5A9-7BA6-4C62-A76A-2B4515EC4DBD}"
+	ProjectSection(SolutionItems) = preProject
+		NuGet.Config = NuGet.Config
+	EndProjectSection
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution

Brotli-ASP.NET-Core-Compression/Brotli-ASP.NET-Core-Compression.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
+<Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
     <TargetFramework>netcoreapp1.1</TargetFramework>
@@ -11,9 +11,11 @@
     <PackageReference Include="Microsoft.ApplicationInsights.AspNetCore" Version="2.0.0" />
     <PackageReference Include="Microsoft.AspNetCore" Version="1.1.1" />
     <PackageReference Include="Microsoft.AspNetCore.Mvc" Version="1.1.2" />
+    <PackageReference Include="Microsoft.AspNetCore.ResponseCompression" Version="1.0.2" />
     <PackageReference Include="Microsoft.AspNetCore.StaticFiles" Version="1.1.1" />
     <PackageReference Include="Microsoft.Extensions.Logging.Debug" Version="1.1.1" />
     <PackageReference Include="Microsoft.VisualStudio.Web.BrowserLink" Version="1.1.0" />
+    <PackageReference Include="System.IO.Compression.Brotli" Version="0.1.0-e170729-1" />
   </ItemGroup>
   <ItemGroup>
     <DotNetCliToolReference Include="Microsoft.VisualStudio.Web.CodeGeneration.Tools" Version="1.0.0" />

Brotli-ASP.NET-Core-Compression/BrotliCompressionProvider.cs

@@ -0,0 +1,20 @@
+using Microsoft.AspNetCore.ResponseCompression;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.IO.Compression;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace Brotli_ASP.NET_Core_Compression
+{
+    public class BrotliCompressionProvider : ICompressionProvider
+    {
+        public string EncodingName => "br";
+        public bool SupportsFlush => true;
+        public Stream CreateStream(Stream outputStream)
+        {
+            return new BrotliStream(outputStream, CompressionMode.Compress);
+        }
+    }
+}

Brotli-ASP.NET-Core-Compression/Startup.cs

@@ -7,6 +7,7 @@
 using Microsoft.Extensions.Configuration;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Logging;
+using Microsoft.AspNetCore.ResponseCompression;
 
 namespace Brotli_ASP.NET_Core_Compression
 {
@@ -29,6 +30,12 @@ public void ConfigureServices(IServiceCollection services)
         {
             // Add framework services.
             services.AddMvc();
+
+            services.AddResponseCompression(options =>
+            {
+                options.Providers.Add<BrotliCompressionProvider>();
+                options.MimeTypes = ResponseCompressionDefaults.MimeTypes.Concat(new[] { "image/svg+xml" });
+            });
         }
 
         // This method gets called by the runtime. Use this method to configure the HTTP request pipeline.
@@ -47,6 +54,7 @@ public void Configure(IApplicationBuilder app, IHostingEnvironment env, ILoggerF
                 app.UseExceptionHandler("/Home/Error");
             }
 
+            app.UseResponseCompression();
             app.UseStaticFiles();
 
             app.UseMvc(routes =>

NuGet.Config

@@ -0,0 +1,5 @@
+<configuration>
+  <packageSources>
+    <add key="dotnet.myget.org dotnet-corefxlab" value="https://dotnet.myget.org/F/dotnet-corefxlab/" />
+  </packageSources>
+</configuration>