Getting the WebOperationContext of a HTTP response in Silverlight

This came up as a question from a customer today: how do you get details of the HTTP response message that a WCF proxy in Silverlight received? If you thought of  OperationContext and WebOperationContext, you’re on the right track, but you have only half of the story. In Silverlight, in order to get to these context objects, you have to switch from the event-based async pattern to the more