Partial content in .NET Core MVC (for video/audio streaming)

Question

I am trying to implement video and audio streaming on my website (to enable seeking in Chrome) and I recently found out that .NET Core 2.0 apparently provides a relatively s

Answer 1

My answer is based on Yuli Bonner, but with the adaptations so that it answers the question directly, and with Core 2.2

 public IActionResult GetFileDirect(string f)
{
   var path = Path.Combine(Defaults.StorageLocation, f);
   var res = File(System.IO.File.OpenRead(path), "video/mp4");
   res.EnableRangeProcessing = true;
   return res;
} 

This allowed for seeking in the browser.

Answer 2

There will be an enableRangeProcessing parameter added to the File method in version 2.1. For now, you need to set a switch. You can do this one of two ways:

In runtimeconfig.json :

{
  // Set the switch here to affect .NET Core apps
  "configProperties": {
    "Switch.Microsoft.AspNetCore.Mvc.EnableRangeProcessing": "true"
  }
}

or:

 //Enable 206 Partial Content responses to enable Video Seeking from 
 //api/videos/{id}/file,
 //as per, https://github.com/aspnet/Mvc/pull/6895#issuecomment-356477675.
 //Should be able to remove this switch and use the enableRangeProcessing 
 //overload of File once 
 // ASP.NET Core 2.1 released

   AppContext.SetSwitch("Switch.Microsoft.AspNetCore.Mvc.EnableRangeProcessing", 
   true);

See ASP.NET Core GitHub Repo for details.