ASP.NET WF4 / WCF and Async Calls

How should you use WF4 and WCF with ASP.NET? For this post I’ve created a really simple workflow and WCF service that delay for a specific amount of time and then return a value.  Then I created an ASP.NET page that I can use to invoke the workflow and WCF service to test their behavior The Workflow DefinitionFirst off – let’s get one thing straight.  When you create a workflow, you are creating