title: Configuring Access-Control-Allow-Headers in Azure Functions
body: <p>I have an API built through Azure Functions that works when called through JavaScript in all browsers except for Safari. From <a href="https://stackoverflow.com/questions/16824661/cors-request-not-working-in-safari">another question</a>, it appears I need to allow a header of "Origin" in the CORS configuration. The only configuration I see in the Azure portal is allowing origins. How do I configure allowed headers?</p>
  
  <p>If it matters, this is developed and published through VS2017 Azure function tools.</p>