WCF Introduction

WCF Introduction

• 1.
  WCF Introduction ARCOM -KSA
• 2.
  Agenda  What isWCF  From object to service  SOA , ESB  ASMX & WCF  WCF architecture  Ways of talk [Client – Service]  Service Provider , Consumer  ABC’s of WCF  Hosting WCF  Advantage , Disadvantages  Demos ARCOM-KSA 2
• 3.
  What is WCF? ARCOM-KSA 3 Stands for Windows Communication Foundation  Microsoft’s unified programming model (the service model) for building Service- Oriented [SOA] apps
• 4.
  From Objects toServices Polymorphism Encapsulation Subclassing Message-based Schema+Contract Binding via Policy 1980s 2000s Interface-based Dynamic Loading Runtime Metadata 1990s Object-Oriented Service-Oriented Component-Based ARCOM-KSA 4
• 5.
  What’s SOA -ESB  software architecture model  used for designing and implementing the interaction between mutually interacting software applications in (SOA) ARCOM-KSA 5  software design and software architecture design pattern  discrete pieces of software application functionality as services  A service is a self-contained unit of functionality SOA (service oriented architecture) ESB (Enterprise Service Bus)
• 6.
  ARCOM-KSA ASMX is limitingWCF is powerful 6 ASMX & WCF  Xml web services  HTTP-only hosting in IIS  No support for security  Advanced scenarios require mixing models  highly configurable and highly extensible  supports what ASMX cannot  supports a unified programming model across all protocols
• 7.
  Service Model Programming Model WCFArchitecture ARCOM-KSA 7
• 8.
  Ways to Talk OneWay Request-Reply Duplex (Dual) ARCOM-KSA 8 Client Service  One Way: Datagram-style delivery  Request-Reply : Immediate Reply on same logical thread  Duplex Reply : “later” and on backchannel (callback-style)q
• 9.
  ARCOM-KSA 9 Service Provider, Consumer
• 10.
  A B C ARCOM-KSA 10ABC’s of Life Service
• 11.
  ServiceClient Address, Binding, Contract[WCF] A d d r e ARCOM-KSA 11 ABC A B C A B C Message Address Where the service is Binding How to talk to the service Contract What the service can do
• 12.
  ABC’s Cont. [Address] ARCOM-KSA 12 Combination of transport, server name, port & path  Transport is determined by the binding  Examples http://localhost:8001 net.tcp://localhost:8002/MyService net.pipe://localhost/MyPipe net.msmq://localhost/private/MyService net.msmq://localhost/MyService A
• 13.
  ABC’s Cont. [Bindings] ARCOM-KSA 13 Transport HTTP TCP MSMQ  Message formats and encoding Plain text Binary Message Transmission Optimization Mechanism (MTOM)  Communication security No security Transport security Message security B
• 14.
  ABC’s Cont. [Contracts] Service Contract DefinesOperations, Behaviors and Communication Shape What does your service do Data Contract Defines Data entities and parameter types What object data is used Message Contract Allows defining application-specific headers and unwrapped body content Allows control over the SOAP structure of messages Fault Contract Defines error types ARCOM-KSA 14 C
• 15.
  ARCOM-KSA 15  IIS /Azure (ASP.NET project)  Windows Services Hosting WCF Services
• 16.
  Demos ARCOM-KSA 16  Hello WCF Edit WCF Configuration  Add services  Add end points  Binding configuration  Consume WCF  Service Reference  Using Code First  WCF Using UML [Class Diagram]  WCF Architecture Code  Service  Service.Contracts  Service.Business
• 17.
  Advantage ARCOM-KSA 17  You cancreate new components for security, transport, authentication.  No much change in code for implementing the security model ,, Small changes in the configuration will make your requirements.  Its faster than ASMX  Its Interoperability, for java, and more.  WCF is interoperable with other services  WCF services provide better reliability and security.
• 18.
  Disadvantage ARCOM-KSA 18  WCF isMicrosoft's implementation of SOA its APIs are solely controlled by MS which makes interoperability a bit difficult.  deploy WCF apps, need more underlying hardware
• 19.
  Thank You ..| ARCOM-KSA 19