How to serve woff2 files from owin FileServer

Since font awesome 4.3, they added the fonts as woff2 format.

I'm guetting 404ed when trying to serve this file through owin :

app.UseFileServer(new FileServerOptions() {
    RequestPath = PathString.Empty,
    FileSystem = new PhysicalFileSystem(@"banana")
});

How do I serve woff2 mime type files through file server in owin ?

---

Two possibilities :

Serve all kind of file types :

var options = new FileServerOptions() {
    RequestPath = PathString.Empty,
    FileSystem = new PhysicalFileSystem(@"banana")
};

options.StaticFileOptions.ServeUnknownFileTypes = true;

app.UseFileServer(options);

Add woff2 mime type :

var options = new FileServerOptions() {
    RequestPath = PathString.Empty,
    FileSystem = new PhysicalFileSystem(@"banana")
};

((FileExtensionContentTypeProvider)options.StaticFileOptions.ContentTypeProvider)
    .Mappings.Add(".woff2", "application/font-woff2");

app.UseFileServer(options);

Second options seems not as elegant but is nonetheless the best. Read why mime types are important.

---

You can avoid the not-very-nice casting by using inheritance:

FileServerOptions options = new FileServerOptions
{
    StaticFileOptions =
    {
        ContentTypeProvider = new CustomFileExtensionContentTypeProvider(),
    }
};

where

private class CustomFileExtensionContentTypeProvider : FileExtensionContentTypeProvider
{
    public CustomFileExtensionContentTypeProvider()
    {
        Mappings.Add(".json", "application/json");
        Mappings.Add(".mustache", "text/template");
    }
}

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