· Windows Communication Foundation is a programming platform and runtime system for building, configuring and deploying network-distributed services.
· It is the latest service oriented technology. · WCF is a combined
WCF Advantaged:
WCF is interoperable with other services when compared to .Net RemotingWCF services provide better reliability and security in
In WCF, there is no need to make much change in code for implementing the security model and changing the binding. Small changes in the configuration will make your requirements.
WCF has integrated logging mechanism, changing the configuration file settings will provide this functionality.
WCF services can be debugged now in Visual Studio 2008 /2010. Wcfsvchost.exe will do it for you because service will be self hosted when you start debugging.
WCF vs WebService:
Features
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Web Service
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WCF
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Hosting
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It can be hosted in IIS
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It can be hosted in IIS, windows activation service, Self-hosting, Windows service
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Programming
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[WebService] attribute has to be added to the class
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[ServiceContraact] attribute has to be added to the class
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Model
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[WebMethod] attribute represents the method exposed to client
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[OperationContract] attribute represents the method exposed to client
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Operation
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One-way, Request- Response are the different operations supported in web service
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One-Way, Request-Response, Duplex are different type of operations supported in WCF
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XML
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System.Xml.serialization name space is used for serialization
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System.Runtime.Serialization namespace is used for serialization
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Encoding
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XML 1.0, MTOM(Message Transmission Optimization Mechanism), DIME, Custom
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XML 1.0, MTOM, Binary, Custom
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Transports
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Can be accessed through HTTP, TCP, Custom
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Can be accessed through HTTP, TCP, Named pipes, MSMQ,P2P, Custom
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Protocols
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Security
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Security, Reliable messaging, Transactions
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