title: .NET Core API Request does not match a supported file type
body: <p>I just want to make sure I have no issue here. Does anybody know what causes the </p>
  
  <pre><code>2017-03-17 07:59:17.5838|1|Microsoft.AspNetCore.Hosting.Internal.WebHost|INFO|Request starting HTTP/1.1 GET http://192.168.20.57:8081/hardware/configuration/active application/json  
  2017-03-17 07:59:17.5868|4|Microsoft.AspNetCore.StaticFiles.StaticFileMiddleware|DEBUG|The request path /hardware/configuration/active does not match a supported file type
  </code></pre>
  
  <p>I'm exposing the Web API by Kestrel only (no IISIntegration). </p>
  
  <p>The request header contains</p>
  
  <pre><code>GET /hardware/configuration/active HTTP/1.1
  Accept: application/json, text/plain, */*
  Content-Type: application/json
  </code></pre>
  
  <p>Defining 
  <code>[Produces("application/json")]</code>
  explicitly in my controller has no effect.</p>