Very nice starter pack for OWIN Web API with F#. If you use Paket manager you need only one dependency to `Microsoft.AspNet.WebApi.OwinSelfHost` NuGet package
Also Web API can be easily configured to use Swagger UI.
I thought it would be good to write a simple OWIN Web Api host using F# to show how easy it is to interop between the two languages and as a fun experiment. You can find all of the source code from this blog post at the FSharpWebApi github repository.
If you open the Program.fs solution in the github repository you will see the following two lines of code are reponsible for starting the web server:
The getAppBuilder function is defined in the WebServerBuilder module as follows:
The getAppBuilder function returns a function with the signature (IAppBuilder) -> (). This signature is the same as the one expected by the first parameter of WebApp.Start. The reason for breaking this function off into its own module is so that it can be tested.
The cool thing about the Web Api Owin Self host stack is that there is a nuget…
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Sergey Tihon's Blog 
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