Created attachment 3696 [details]
Fix handling of async methods with ref parameters in ClientRealProxy.
ClientRealProxy throws exceptions when handling an async WCF method with a ref parameter.
I've observed this behavior in mono 2.10.9, 3.0.3 and git master.
The attached patch was created against 2.10.9, but should also work for 3.0.3 and git master.