Custom Response Compression ASP.Net Core

CustomCompressionProvider.cs

public class CustomCompressionProvider : ICompressionProvider
{
    public string EncodingName => "mycustomcompression";
    public bool SupportsFlush => true;

    public Stream CreateStream(Stream outputStream)
    {
        return outputStream;
    }
}

Startup.cs

public class Startup
{
	public Startup(IConfiguration configuration)
	{
		Configuration = configuration;
	}

	public IConfiguration Configuration { get; }

	public void ConfigureServices(IServiceCollection services)
	{
		services.AddResponseCompression(options =>
		{
			options.Providers.Add<GzipCompressionProvider>();
			options.Providers.Add<CustomCompressionProvider>();
			options.MimeTypes = ResponseCompressionDefaults.MimeTypes.Concat(new[] { "image/svg+xml" });
		});

		services.Configure<GzipCompressionProviderOptions>(options => 
		{
			options.Level = CompressionLevel.Fastest;
		});
		
		services.AddMvc();
	}

	public void Configure(IApplicationBuilder app, IHostingEnvironment env)
	{
		if (env.IsDevelopment())
		{
			app.UseDeveloperExceptionPage();
		}

		app.UseResponseCompression();
		app.UseMvc();
	}
}