Introduction to WCF

1. Windows Communication Foundation Ch. Vishwa Mohan M.Sc., M.Tech Freelance Software Consultant & Corporate Trainer

3. WCF Introduction Windows Communication Foundation

8. Four Tenets of Service Orientation SERVICE ORIENTATION Compatibility Based On Policy Share Schema & Contract, Not Class Services Are Autonomous Boundaries Are Explicit

10. SOA Implementation in WCF Boundaries are Explicit Services are autonomous Share schema & contract, not class Compatibility based on policy Developers opt-in to consuming, exposing, and defining public-facing service façade. Services and consumers are independently versioned, deployed, operated, and secured . Data never includes behavior; Objects with data and behavior are a local phenomenon. Capabilities and requirements represented by a unique public name; Used to establish service suitability.

12. How to build Service Oriented Applications? “ What API should I use?” “ How do I build service-oriented systems?” “ How can I send messages securely & reliably?” “ How do I build dynamic, decoupled applications?”

14. Extending the .NET Framework WCF Presentation Data Communication Windows Forms ASP.NET SQL Server Compact Framework Console & NT Service … J# C++ C# VB Base App Services Security Configuration Deployment & Management Visual Studio 2008

16. WCF Unified Programming Model ( Supersets Existing Technologies ) Interop with other platforms ASMX Attribute- Based Programming Enterprise Services WS-* Protocol Support WSE 2/3 Message- Oriented Programming MSMQ Extensibility Location transparency .NET Remoting Supersets Existing Technologies

22. WS-* Composability and Message Anatomy

23. Investment Protection SIDE-BY-SIDE Interop UPGRADE Side-by-side co-existence with existing distributed technologies. Smooth upgrade of existing code to WCF Seamless communications with application built on existing technologies

26. Example of Simple SOAP Envelope <?xml version=&quot;1.0&quot;?> < soap:Envelope xmlns:soap=&quot;http://www.w3.org/2001/12/soap-envelope&quot; soap:encodingStyle=&quot;http://www.w3.org/2001/12/soap-encoding&quot;> < soap:Heade r> <m:Trans xmlns:m=&quot;http://www.w3schools.com/transaction/&quot; soap:mustUnderstand=&quot;1&quot;>234</m:Trans> </ soap:Header > < soap:Body xmlns:m=&quot;http://www.example.org/stock&quot;> <m:GetStockPrice> <m:StockName>IBM</m:StockName> </m:GetStockPrice> </ soap:Body > </ soap:Envelope >

41. WCF Architecture: Messaging Runtime Client Dispatcher Service Contract and Behaviors Binding Address Transport Encoder Protocol(s) Transport Encoder Protocol(s)

42. WCF Architecture WS Security Channel Messaging HTTP Channel TCP Channel MSMQ Channel Named Pipe Channel Transaction Flow Channel WS Reliable Messaging Channel Encoders (Binary/MTOM/Text/XML) Activation and Hosting Service Runtime Contracts Data Contract Message Contract Service Contract Policy and Binding Application Windows Activation Service .EXE Windows Service COM+ Throttling Behavior Error Behavior Metadata Behavior Instance Behavior Message Behavior Transaction Behavior Dispatch Behavior Concurrency Behavior Parameter Filtering

43. WCF Features Summary Address Binding Behavior Contract HTTP Transport TCP Transport NamedPipe Transport MSMQ Transport Custom Transport WS-Security Protocol WS-RM Protocol WS-Coord Protocol Duplex Channel Custom Protocol http://... net.tcp://... net.pipe://... net.msmq://... xxx://... Throttling Behavior Metadata Behavior Error Behavior Custom Behavior Instancing Behavior Concurrency Behavior Transaction Behavior Security Behavior Request/ Response One-Way Duplex net.p2p://... Peer Transport

44. WCF Architecture Binding Address Contract