Move the basic functionality of file streaming to a lower level API

[jbagga]

From @jbagga on January 18, 2018 23:51

See aspnet/Mvc#7208 (comment)

@Tratcher @dustinmoris

Copied from original issue: aspnet/Mvc#7259

[jbagga]

From @rynowak on January 19, 2018 0:53

This isn't an MVC issue 😆 - a lower level implies non-MVC

[dustinmoris]

Thanks, sounds like this is the right place, however I remember @DamianEdwards and @Eilon saying on one of the recent stand ups that issues in aspnet/Home are getting forgotten.

[rynowak]

This is the right place. We're doing a trial of consolidating issues from lower-traffic repos in aspnet/Home.

[khellang]

With the advent of IActionResultExecutor<TResult>, it's pretty easy to knock out a helper extension method to execute FileStreamResult in any middleware: http://kristian.hellang.com/using-mvc-result-executors-in-middleware/.

You still need a dependency on Microsoft.AspNetCore.Mvc.Core (and the formatters you need), but it's a nice start.

[Eilon]

Closing because there are no plans to implement this at this time.