Windows Communication Foundation what communication protocols are used to access the service, whether security mechanisms are to be used, and the like. WCF includes predefined bindings for most common communication protocols such as SOAP over HTTP, SOAP over TCP, and SOAP over Message Queues, etc. Interaction between WCF endpoint and client is done using a SOAP envelope. SOAP envelopes are in simple XML form, which makes WCF platform-independent. When a client wants to access the service via an endpoint, it not only needs to know the contract, but it also has to adhere to the binding specified by the endpoint. Thus, both client
Communication protocol the design and implementation of communication protocols and can be addressed by patterns from several different pattern languages: "Pattern Language for Application-level Communication Protocols (CommDP)", "Service Design Patterns", "Patterns of Enterprise Application Architecture", "Pattern-Oriented Software Architecture: A Pattern Language for Distributed Computing". The first of these pattern languages focuses on the design of protocols and not their implementations. The others address issues in either both areas or just the latter. Formal methods of describing communication syntax are Abstract Syntax Notation One (an ISO standard) and Augmented Backus-Naur form (an IETF standard). Finite state machine models and communicating finite-state machines are