BLun.ETagMiddleware 1.2.2

dotnet add package BLun.ETagMiddleware --version 1.2.2
NuGet\Install-Package BLun.ETagMiddleware -Version 1.2.2
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.
<PackageReference Include="BLun.ETagMiddleware" Version="1.2.2" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add BLun.ETagMiddleware --version 1.2.2
#r "nuget: BLun.ETagMiddleware, 1.2.2"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.
// Install BLun.ETagMiddleware as a Cake Addin
#addin nuget:?package=BLun.ETagMiddleware&version=1.2.2

// Install BLun.ETagMiddleware as a Cake Tool
#tool nuget:?package=BLun.ETagMiddleware&version=1.2.2

ETagMiddleware

ETag Middleware for Asp.Net Core -.NetStandard 2.0 Is supports Caching with Http Request Header 'If-None-Match' with Http Respons Header 'ETag' and set the HttpStatus tu 304. Http Request Header 'Cache-Controle' with 'no-cache' is integrated and would set the HttpStatus to 200.

Inspiration

I was inspired by Mads Kristensen Blog. The Example from him, can you find here as code. Thanks for your artikle!

Requirements

.NETStandard2.0

Install

Download from Nuget.org

"dependencies": {
  "BLun.ETagMiddleware": "<version>"
}

Featurs

  • BLun.ETagMiddleware for Asp.Net Core Http
    • Microsoft.AspNetCore.Http.IMiddleware
  • BLun.ETagAttribute for Asp.Net Core Mvc
    • Microsoft.AspNetCore.Mvc.Filters.IAsyncActionFilter
  • Supports
    • Microsoft.Extensions.Logging
    • Microsoft.Extensions.DependencyInjection
    • Microsoft.Extensions.Options (Configuration)

Usage as Middleware (Microsoft.AspNetCore.Http.IMiddleware)

The default usage are:

using BLun.ETagMiddleware;

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc();

    // Required
    // Add a Middleware for each Controller Request with
    // algorithmus          = SHA1      = default
    // etag validator       = Strong    = default
    // body content length  = 40 * 1024 = default
    services.AddETag();
}

// Add "app.UseETag();" to "Configure" method in Startup.cs
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    app.UseStaticFiles();
    
    // Add a Middleware for each Controller Request
    // Atention: add app.UseETag after app.UseStaticFiles, the order is important for performance
    app.UseETag();

    app.UseMvc(routes =>
    {
        routes.MapRoute(
            name: "default",
            template: "{controller=Home}/{action=Index}/{id?}");
    });
}

You can configuratione your own option prameters:

using BLun.ETagMiddleware;

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc();

    // Required
    // Add ETagOption with own global configurations
    services.AddETag(new ETagOption()
    {
        // algorithmus
        // SHA1         = default
        // SHA265
        // SHA384
        // SHA512
        // MD5
        ETagAlgorithm = ETagAlgorithm.SHA265,

        // etag validator
        // Strong       = default
        // Weak
        ETagValidator = ETagValidator.Weak,

        // body content length
        // 40 * 1024    = default
        BodyMaxLength = 20 * 1024
    });
}

// Add "app.UseETag();" to "Configure" method in Startup.cs
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    app.UseStaticFiles();
    
    // Add a Middleware for each Controller Request
    // Atention: add app.UseETag after app.UseStaticFiles, the order is important
    app.UseETag();

    app.UseMvc(routes =>
    {
        routes.MapRoute(
            name: "default",
            template: "{controller=Home}/{action=Index}/{id?}");
    });
}

Usage as ETagAttribute (Microsoft.AspNetCore.Mvc.Filters.IAsyncActionFilter)

using BLun.ETagMiddleware;

// This method gets called by the runtime. Use this method to add services to the container.
public void ConfigureServices(IServiceCollection services)
{
    services.AddMvc();

    // Add ETagOption with own global configurations
    services.AddETag(new ETagOption()
    {
        // algorithmus
        // SHA1         = default
        // SHA265
        // SHA384
        // SHA512
        // MD5
        ETagAlgorithm = ETagAlgorithm.SHA265,

        // etag validator
        // Strong       = default
        // Weak
        ETagValidator = ETagValidator.Weak,

        // body content length
        // 40 * 1024    = default
        BodyMaxLength = 20 * 1024
    });
}

// Add "app.UseETag();" to "Configure" method in Startup.cs
public void Configure(IApplicationBuilder app, IHostingEnvironment env)
{
    app.UseStaticFiles();

    // Add a Middleware for each Controller Request
    // Atention: add app.UseETag after app.UseStaticFiles, the order is important
    // deactivate or combine with Middlewar
    // the EtagAttributes didn't need the Middleware
    // app.UseETag();

    app.UseMvc(routes =>
    {
        routes.MapRoute(
            name: "default",
            template: "{controller=Home}/{action=Index}/{id?}");
    });
}

// Can add on controller
[ETag()]
public class HomeController : Controller
{
    
    public IActionResult Index()
    {
        return View();
    }

    // Can add on methods
    [ETag(ETagValidator = ETagValidator.Weak)]
    public IActionResult About()
    {
        ViewData["Message"] = "Your application description page.";

        return View();
    }

    [ETag(ETagValidator = ETagValidator.Strong, BodyMaxLength = 30 * 1024, ETagAlgorithm = ETagAlgorithm.SHA384)]
    public IActionResult Contact()
    {
        ViewData["Message"] = "Your contact page.";

        return View();
    }

    public IActionResult Error()
    {
        return View(new ErrorViewModel { RequestId = Activity.Current?.Id ?? HttpContext.TraceIdentifier });
    }
}

Unittested

The Code is unittestet.

Vision

I would develope muche more test for it.

Product Compatible and additional computed target framework versions.
.NET net5.0 was computed.  net5.0-windows was computed.  net6.0 was computed.  net6.0-android was computed.  net6.0-ios was computed.  net6.0-maccatalyst was computed.  net6.0-macos was computed.  net6.0-tvos was computed.  net6.0-windows was computed.  net7.0 was computed.  net7.0-android was computed.  net7.0-ios was computed.  net7.0-maccatalyst was computed.  net7.0-macos was computed.  net7.0-tvos was computed.  net7.0-windows was computed.  net8.0 was computed.  net8.0-android was computed.  net8.0-browser was computed.  net8.0-ios was computed.  net8.0-maccatalyst was computed.  net8.0-macos was computed.  net8.0-tvos was computed.  net8.0-windows was computed. 
.NET Core netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
MonoAndroid monoandroid was computed. 
MonoMac monomac was computed. 
MonoTouch monotouch was computed. 
Tizen tizen40 was computed.  tizen60 was computed. 
Xamarin.iOS xamarinios was computed. 
Xamarin.Mac xamarinmac was computed. 
Xamarin.TVOS xamarintvos was computed. 
Xamarin.WatchOS xamarinwatchos was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
1.2.2 3,456 2/11/2018
1.2.1 1,099 2/2/2018
1.2.0 1,007 2/1/2018

Is supports Caching with Http Request Header 'If-None-Match' with Http Respons Header 'ETag' and set the HttpStatus tu 304. Http Request Header 'Cache-Controle' with 'no-cache' is integrated and would set the HttpStatus to 200.