Using Response Compression Middleware in ASP.NET Core

October 26, 2016 by Anuraj Estimated read time : 2 mins

C# ASP.NET Core Compression Middleware

This post is about using Response Compression Middleware in ASP.NET Core. Long back I wrote blog post on Enabling GZip Compression in ASP.NET5. It was a custom middleware I implemented in DNX days. Now as part of ASP.NET Core 1.1 Preview 1, Microsoft introduced Response Compression Middleware in ASP.NET Core.

To use Response Compression Middleware, first you need to add the Microsoft.AspNetCore.ResponseCompression package to your project.json file.

"Microsoft.NETCore.App": {
  "version": "1.1.0-preview1-001100-00",
  "type": "platform"
},
"Microsoft.AspNetCore.Authentication.Cookies": "1.0.0",
"Microsoft.AspNetCore.Diagnostics": "1.0.0",
"Microsoft.AspNetCore.Mvc": "1.0.1",
"Microsoft.AspNetCore.ResponseCompression" : "1.0.0-preview1-final"

You can enable compression using the Configure and ConfigureServices methods in the Startup.cs file.

public void ConfigureServices(IServiceCollection services)
{
    services.Configure<GzipCompressionProviderOptions>
        (options => options.Level = CompressionLevel.Fastest);
    services.AddResponseCompression(options =>
    {
        options.Providers.Add<GzipCompressionProvider>();
    });
    
    services.AddMvc();
}

public void Configure(IApplicationBuilder app, 
    IHostingEnvironment env, ILoggerFactory loggerFactory)
{
    loggerFactory.AddConsole(Configuration.GetSection("Logging"));
    loggerFactory.AddDebug();
    app.UseResponseCompression();
    app.UseMvc(routes =>
    {
        routes.MapRoute(
            name: "default",
            template: "{controller=Home}/{action=Index}/{id?}");
    });
}