title: .HttpContext.Features.Get<IHttpResponseFeature>().ReasonPhrase is not working in .net core 2.1?
body: <p>We are using the code below to send the custom message from server side to client side in HTTP request. It is working properly in <code>.NET Core 2.0</code></p>
  
  <pre><code>Response.HttpContext.Features.Get&lt;IHttpResponseFeature&gt;().ReasonPhrase
  </code></pre>
  
  <p>While using the same code in <code>.NET Core 2.1</code> it does not work. It doesn't throw any script errors but we couldn't get message in client side success.</p>
  
  <p>How to resolve this problem?</p>