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Middleware in Asp.Net Core
Microsoft Silverlight for Windows Phone is a new open-source and cross-platform framework for building modern cloud-based web applications using .NET. It allows for a seamless transition from on-premises to cloud applications and faster development cycles through modular and totally customizable design. The document then provides examples of how to modify request headers, add response headers, validate requests before reaching controllers, and log requests and responses in ASP.NET Core Web API using middleware and delegating handlers.
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Middleware in Asp.Net Core
- 2.Microsoft Silverlight forWindows PhoneTech bloggerMicrosoft Technical Community Speaker
- 4. Handling requestin WebApi Introducing lightweight ASP.NET Core
- 5.A new open-sourceand cross-platform framework for building moderncloud-based Web applications using .NET
- 6.Choose your EditorsandToolsOpen Sourcewith Contributions Cross-PlatformOSSSeamless transitionfrom on-premises to cloudFaster Development CycleTotally ModularFast
- 8.How will you-• Modify request headers ?• Add a response header to responses ?• Validate requests before they reach the controller ?• Log the incoming requests and the outgoing responses ?
- 10.1. HttpServer2. HttpRoutingDispatcher3.HttpControllerDispatcher
- 11.Three simple steps:1. Inherit from DelegatingHandler2. Override the send async method3. Put it on the pipeline(Register your handler)
- 12.public class MessageHandler1: DelegatingHandler{protected async override Task<HttpResponseMessage>SendAsync(HttpRequestMessage request,CancellationToken cancellationToken){var response = new HttpResponseMessage(HttpStatusCode.OK){Content = new StringContent(“Inside MessageHandler1")};var tsc = new TaskCompletionSource<HttpResponseMessage>();tsc.SetResult(response);return await tsc.Task;}}
- 13.public static classWebApiConfig{public static void Register(HttpConfiguration config){config.MessageHandlers.Add(new MessageHandler1());// Code Excerpt}}
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Editor's Notes
- #7 ASP.NET frameworks - similar, but different
- #8 The standard library allows us to innovate much more quickly and those innovations are picked up by all the platforms. Tooling innovation affects both app models & standard library
- #13 HttpServer gets the request from the host.HttpRoutingDispatcher dispatches the request based on the route.HttpControllerDispatcher sends the request to a Web API controller.
- #14 var response = await base.SendAsync(request, cancellationToken); Debug.WriteLine("Process response handler 1 end"); return response;