WebAPI 2 attribute routing enable session state

Question

We figured out how to enable session state with webapi Sample here

Now we have WebApi 2 attribute routing, so we no longer have route object to inject custom handler

Answer 1

in the global.asax

Private Sub WebApiApplication_PostAuthorizeRequest(sender As Object, e As EventArgs) Handles Me.PostAuthorizeRequest
     System.Web.HttpContext.Current.SetSessionStateBehavior(System.Web.SessionState.SessionStateBehavior.Required)
End Sub