.NET - HttpHandler - chyba 417

Problém

Po nasazení HttpHandleru se v aplikaci objevila chyba

The request failed with HTTP status 417: Expectation failed.

Řešení

Upravit Web.Config

<system.net>
     <settings>
         <servicePointManager expect100Continue="false" />
     </settings>
</system.net>

Přidat do kódu

System.Net.ServicePointManager.Expect100Continue = false;

Odkazy

• The request failed with HTTP status 417: Expectation failed
  https://www.codeproject.com/Articles/94235/The-request-failed-with-HTTP-status-417-Expectatio
  

• ServicePointManager.Expect100Continue Property
  https://msdn.microsoft.com/en-us/library/system.net.servicepointmanager.expect100continue.aspx