Microsoft Owin Source
Though Microsoft’s Asp.Net is very mature framework, it had lacked some basic qualities like portability, modularity and scalability which the web stacks in Open Source communities were offering. This had led to the development of OWIN, a specification how an Asp.Net application and hosting servers has to be built to work without any. These products are developed by the ASP.NET team at Microsoft in collaboration with a community of open source developers. See the list of Packages for information about individual components. Documentation is available in the Wiki and overview of OWIN and Katana.
- Microsoft.owin.security.openidconnect Source Code
- Microsoft Owin Source Code
- Microsoft Owin Source Pdf
- Microsoft Owin Source
- .NET Core is an open-source and cross-platform version of.NET that is maintained by Microsoft and the.NET community on GitHub. All aspects of.NET Core are open-source including class libraries, runtime, compilers, languages, ASP.NET Core web framework, Windows desktop frameworks, and Entity Framework Core data access library.
- OWIN defines a standard interface between.NET web servers and web applications. The goal of the OWIN interface is to decouple server and application, encourage the development of simple modules for.NET web development, and, by being an open standard, stimulate the open source ecosystem of.NET web development tools.
- OWIN GitHub site. Contribute to owin/owin development by creating an account on GitHub.
- Katana is a flexible set of components for building and hosting OWIN-based web applications on.NET Framework. This repo is the home for the Katana host, server, and middleware source code and documentation. Official releases of Katana components (including prerelease versions) can be found on https://nuget.org.
by Mike Wasson
Open Web Interface for .NET (OWIN) defines an abstraction between .NET web servers and web applications. By decoupling the web server from the application, OWIN makes it easier to create middleware for .NET web development. Also, OWIN makes it easier to port web applications to other hosts—for example, self-hosting in a Windows service or other process.
OWIN is a community-owned specification, not an implementation. The Katana project is a set of open-source OWIN components developed by Microsoft. For a general overview of both OWIN and Katana, see An Overview of Project Katana. In this article, I will jump right into code to get started.
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Microsoft.owin.security.openidconnect Source Code
This tutorial uses Visual Studio 2013 Release Candidate, but you can also use Visual Studio 2012. A few of the steps are different in Visual Studio 2012, which I note below.
Host OWIN in IIS
In this section, we'll host OWIN in IIS. This option gives you the flexibility and composability of an OWIN pipeline together with the mature feature set of IIS. Using this option, the OWIN application runs in the ASP.NET request pipeline.
Microsoft Owin Source Code
First, create a new ASP.NET Web Application project. (In Visual Studio 2012, use the ASP.NET Empty Web Application project type.)
In the New ASP.NET Project dialog, select the Empty template.
Add NuGet Packages
Next, add the required NuGet packages. From the Tools menu, select NuGet Package Manager, then select Package Manager Console. In the Package Manager Console window, type the following command:
install-package Microsoft.Owin.Host.SystemWeb –Pre
Add a Startup Class
Next, add an OWIN startup class. In Solution Explorer, right-click the project and select Add, then select New Item. In the Add New Item dialog, select Owin Startup class. For more info on configuring the startup class, see OWIN Startup Class Detection.
Add the following code to the Startup1.Configuration method:
This code adds a simple piece of middleware to the OWIN pipeline, implemented as a function that receives a Microsoft.Owin.IOwinContext instance. When the server receives an HTTP request, the OWIN pipeline invokes the middleware. The middleware sets the content type for the response and writes the response body.
Windows 8 download. Note
The OWIN Startup class template is available in Visual Studio 2013. If you are using Visual Studio 2012, just add a new empty class named Startup1, and paste in the following code:
Run the Application
Press F5 to begin debugging. Visual Studio will open a browser window to http://localhost:*port*/. The page should look like the following:
Self-Host OWIN in a Console Application
It's easy to convert this application from IIS hosting to self-hosting in a custom process. With IIS hosting, IIS acts as both the HTTP server and as the process that hosts the service. With self-hosting, your application creates the process and uses the HttpListener class as the HTTP server.
Microsoft Owin Source Pdf
In Visual Studio, create a new console application. In the Package Manager Console window, type the following command:
Install-Package Microsoft.Owin.SelfHost -Pre
Add a Startup1 class from part 1 of this tutorial to the project. You don't need to modify this class.
Implement the application's Main method as follows.
When you run the console application, the server starts listening to http://localhost:9000. If you navigate to this address in a web browser, you will see the 'Hello world' page.
Add OWIN Diagnostics
The Microsoft.Owin.Diagnostics package contains middleware that catches unhandled exceptions and displays an HTML page with error details. This page functions much like the ASP.NET error page that is sometimes called the 'yellow screen of death' (YSOD). Like the YSOD, the Katana error page is useful during development, but it's a good practice to disable it in production mode.
To install the Diagnostics package in your project, type the following command in the Package Manager Console window:
install-package Microsoft.Owin.Diagnostics –Pre
Change the code in your Startup1.Configuration method as follows:
Now use CTRL+F5 to run the application without debugging, so that Visual Studio will not break on the exception. The application behaves the same as before, until you navigate to http://localhost/fail, at which point the application throws the exception. The error page middleware will catch the exception and display an HTML page with information about the error. You can click the tabs to see the stack, query string, cookies, request header, and OWIN environment variables.