I'm working on a project that is consuming SOAP services via WCF. Initially, we used generated service references because it was easy to get started. This provides ChannelFactory caching and task-based async methods out of the box, which is clearly desirable.
We've recently switched to using service interfaces and instantiating our own ChannelFactory. We treat the ChannelFactory as a singleton object to cache it. On caching the ChannelFactory -- I've been told that a ChannelFactory can go bad if, for example, one of its channels fault. Is this a real concern?
My second question is in regards to using task-based async calls like the ones generated when using the service reference. How is this done when using a ChannelFactory<T>? I understand that you can annotate methods on T with [OperationContract(AsyncPattern = true)], but these return IAsyncResult and not Task.
Any help would be appreciated.
