Rob Daigneau

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When building WCF services you'll eventually need to integrate common logic that may be applied across a number of services, contracts, endpoints, or operations. Examples include logging, security, error handling, and message or parameter manipulation. Since this kind of logic cuts across all of these concerns and must often be executed somewhere between the submission of a message from a client to the service, we are presented with an interesting design and programming challenge. Fortunately, WCF provides a feature called Custom Behaviors that lets us inject common and "cross-cutting" logic into the WCF runtime either at the proxy (i.e., the client) or dispatcher (i.e., the service) to achieve such ends. The WCF Architecture for Extensibility The WCF architecture is amazingly extensible. Figure 1 provides an overview that we can use to orient ourselves before delvin... (more)