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Curiosus.Tools.Web

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ASP.NET Core helpers for MVC sites and APIs: middleware (exception handling, request logging, performance measuring, reverse proxy), model binders, data protection setup, reCAPTCHA, sitemap and assorted HTTP extensions.

Installation​

dotnet add package Curiosus.Tools.Web

Usage​

using Curiosus.Tools.Web.Middleware;
using Curiosus.Tools.Web.MimeTypes;
using Curiosus.Tools.Web.ModelBinders;
using Curiosus.Tools.Web.ReverseProxy;

// services
services.AddReverseProxy(configuration.ReverseProxy);   // ForwardedHeaders for ProxyIps; no-op when null
services.AddMimeTypeMapping();                          // MimeMappingService
services.AddMvc(options => options.ModelBinderProviders.Insert(0, new TrimStringModelBinderProvider()));

// pipeline
app.UseReverseProxy(configuration.ReverseProxy);        // forwarded headers + PathBase
app.UseCuriosusExceptionHandler("/error");              // logs and re-executes the pipeline with /error
app.UsePerformanceMeasurer();
app.UseRequestLogging();                                // dumps request bodies, masks SensitiveDataProtector fields
app.UseRouting();

UseRequestLogging resolves a non-generic ILogger from DI (registered by Curiosus.Hosting.Web).

What else is inside:

  • Model binding — TrimStringModelBinderProvider, InvariantDecimalModelBinderProvider, DateTimeModelBinderProvider, DelimitedArrayModelBinder, TrimStringSystemJsonConverter for [FromBody] strings.
  • Middleware — UseUserTracer (trace id cookie, needs UniqueIdGenerator.Initialize), UseLocalizationSetter (language cookie), UsePreviewDetector (rewrites the path for link-preview bots).
  • Options-driven services — AddCuriosusDataProtection(DataProtectionOptions) / DisableDataProtection(), AddReCaptcha(ReCaptchaOptions) + ReCaptchaService, AddSiteMap(mvcBuilder) + SiteMapBuilder, ConfigureCookiesForOldBrowsers() (SameSite fixes).
  • MVC — MVCBaseController (error views, AJAX responses, redirects), SiteError, ModelStateExtensions.AddModelErrorIf, Page<T>/Paginator, InvariantDecimalTagHelper.
  • Extensions — HttpContext/HttpRequest (IsAjaxRequest, GetAbsoluteUrl, ...), ISession JSON objects, HtmlSanitizerHelper.

TrimStringNewtonsoftConverter is obsolete and will be removed with the Newtonsoft.Json dependency.

HTTP requests go through the HttpClient named ReCaptchaService.HttpClientName from IHttpClientFactory, which AddReCaptcha registers. Configure it for timeouts, a proxy or resilience handlers:

services.AddHttpClient(ReCaptchaService.HttpClientName, client => client.Timeout = TimeSpan.FromSeconds(30));

See also​