By Michele Leroux Bustamante
This easy-to-use advent to Microsoft home windows communique starting place (WCF) is perfect for builders who are looking to discover ways to construct prone on a firm community or as a part of an company approach. outfitted into home windows Vista and Longhorn, and on hand for home windows XP and home windows 2003, WCF presents a platform for service-oriented structure (SOA) that permits safe and trustworthy conversation between structures inside a firm or around the web. With WCF, software program builders can concentrate on their enterprise functions and never the plumbing required to attach them. additionally, with WCF builders can study a unmarried programming API to accomplish effects formerly supplied via ASMX, company prone and .NET Remoting. studying WCF gets rid of the complexity of utilizing this platform by means of delivering designated solutions, causes and code samples for the commonest questions requested via software program builders. home windows verbal exchange beginning (or WCF, previously code identify "Indigo") presents a suite of programming APIs that make it effortless to construct and devour safe, trustworthy, and transacted prone. This platform gets rid of the necessity for builders to benefit assorted applied sciences corresponding to ASMX, company companies and .NET Remoting, to distribute procedure performance on a company community or over the net. the 1st actually service-oriented platform, WCF offers recommendations that decouple carrier layout and improvement from deployment and distribution - making a extra versatile and agile surroundings. WCF additionally encapsulates all the most recent net carrier criteria for addressing, safety, reliability and extra.
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Additional info for Learning WCF: A Hands-on Guide
Sample text
Services are autonomous Services encapsulate business functionality, but they must also encapsulate other dependencies of the business tier. In this way the entire service should be moveable or even replaceable without impact to other services or system functionality as illustrated in Figure 1-9. As I mentioned before, a service represents a major chunk of business functionality that owns its own business components, data access components and data storage if applicable. It should be able to perform key functions without external dependencies.
RPC calls are marshaled by converting them to messages and sending them over a transport protocol such as TCP. When the message reaches its destination, it is un-marshaled and converted into a stack frame that invokes the object. This is all usually handled transparently through a client proxy and stub at the destination. Both proxy and stub know how to construct and deconstruct messages. This process is known as serialization and deserialization. Figure 1-14 illustrates the serialization and deserialization process (often just called serialization) from a high level.
In other words, Little SOA. WCF Services WCF services are the new distributed boundary in an enterprise application—with an emphasis on SOA. NET Remoting, or ASMX to distribute and reuse functionality, WCF provides you with a single programming model to satisfy the needs of any equivalent distribution scenario. With WCF, you can cross process, machine, and corporate boundaries over any number of protocols; you can expose interoperable web services; and you can support queued messaging scenarios.