Asynchronously consume synchronous WCF service

Question

I’m currently in the process of migrating a client application over to .NET 4.5 to make use of async/await. The application is a client for a WCF service which currently off

Answer 1

This isn't horrible: https://stackoverflow.com/a/23148549/177333. You just wrap your return values with Task.FromResult(). You have to change the service side, but it's still synchronous and you're not using an extra thread. That changes your server-side interface which can still be shared with the client so it can wait asynchronously. Otherwise it looks like you have to maintain separate contracts on server and client somehow.