Add application/manifest+json ( .webmanifest)

[aspnet-hello]

From @RehanSaeed on Monday, October 30, 2017 2:58:49 AM

Added support fot the .webmanifest file extension which returns application/manifest+json.

See sonarwhal documentation and W3C for reference.

Copied from original issue: aspnet/StaticFiles#221

[rickyruiz]

Any news on when is this PR going live?

---

If anyone is stuck with this, you can create a custom content type provider like so:

  public class PwaContentTypeProvider : FileExtensionContentTypeProvider
  {
    public PwaContentTypeProvider()
    {
      Mappings.Add(".webmanifest", "application/manifest+json");
    }
  }

In Startup.cs:

app.UseStaticFiles(new StaticFileOptions()
{
  ContentTypeProvider = new PwaContentTypeProvider()
});