A library to simplify flushing HTTP responses early in ASP.NET MVC.

CourtesyFlush can be installed via NuGet:

Install-Package CourtesyFlush

Flushing early can provide performance improvements in web applications and has been a recomended best practice in the web performance community since 2007.

To find out more, check out my blog where I covered the benefits of flushing early in two posts:

• Flushing in ASP.NET MVC
• More HTTP Flushing in ASP.NET MVC

CourtesyFlush is easy to use. It builds on top of common ASP.NET MVC Action Filter functionality.

A full writeup of how to use CourtesyFlush is availble on my blog.

• Added support for AntiForgeryTokens. Example usage:

  // The "GET" action that includes the token...
  [HttpGet, FlushHead(Title = "Flushed Title", FlushAntiForgeryToken = true)]
  public ActionResult Register()
  {
      return View();
      // Inside this view, call @Html.FlushedAntiForgeryToken() instead of @Html.AntiForgeryToken()
  }
  
  // The "POST" action with standard ValidateAntiForgeryToke attribute 
  [HttpPost, ValidateAntiForgeryToken]
  public ActionResult Register(string username, string password)
  {
      // handle valid request here
  }

  NOTE: AntiForgeryToken support only available in .NET 4.5

• Re-branded from PerfMatters.Flush to CourtesyFlush