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Getting Started with Windows Communication Foundation 4.5

Getting Started with Windows Communication Foundation 4.5. Ed Jones, MCT, MCPD, MCTS Consultant RBA Inc. Welcome to TechFuse!. Objective: To give you enough information to get started at building a WCF solution! To get the most out of this session, you need to know…

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Getting Started with Windows Communication Foundation 4.5

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  1. Getting Started with Windows Communication Foundation 4.5 Ed Jones, MCT, MCPD, MCTSConsultantRBA Inc.

  2. Welcome to TechFuse! • Objective: To give you enough information to get started at building a WCF solution! • To get the most out of this session, you need to know… • .NET Programming (all samples in C#) • Simple configuration (.config files)

  3. Overview • TechFuse Suites: our sample application • What does it mean to be SOA? • Contracts and Service Implementation • Bindings and Behaviors • Hosting the Service • Consuming WCF Services • What’s New in WCF 4.5?

  4. TechFuse Suites • A simple service that allows one to make, alter, or cancel a reservation at TechFuse Suites. • The reservation system is available to any client regardless of type of code, native OS, etc. • Architecture • The reservation system is a WCF 4.5 Service • The service is hosted in a Windows Service over http and netTcp • The database is SQL Server 2012 • Supports multiple clients: • Windows Forms • Java-Based (we’ll use the SOAP UI tool) • Sample Code and Database available at: http://sdrv.ms/13ZU79u

  5. Service Oriented Architecture and Principles

  6. What is service orientation? • Service-Oriented Architecture (SOA) is a set of principles and methodologies for designing and developing software in the form of interoperable services. These services are well-defined business functionalities that are built as software components (discrete pieces of code and/or data structures) that can be reused for different purposes. SOA design principles are used during the phases of systems development and integration. -Wikipedia, “Service-Oriented Architecture”

  7. Or better yet… • A loosely-coupled architecture designed to meet the business needs of the organization.

  8. SOA Design Principles • Boundaries Are Explicit • Services Are Autonomous • Services Share Schema & Contract, Not Class • Service Compatibility Is Based Upon Policy

  9. What is WCF? • Windows Communication Foundation (WCF) is a framework for building service-oriented applications. • It is a runtime and a set of APIs for creating systems that send messages between services and clients. • WCF is the foundation for other distributed technologies by Microsoft, such as Azure, AppFabric, and BizTalk

  10. How it works: A WCF Overview

  11. WCF Contracts Building out service and data contracts

  12. WCF Contracts • Contracts determine what data and operations are exposed • Service contracts define operations • Data contracts define data (duh!) • And you’ve got other contracts, too • Message Contracts • Fault Contracts

  13. A Contract Is Just a Schema…

  14. Service Contracts

  15. Data Contracts

  16. TechFuse Suites: Contracts and Implementation

  17. Configuring the Service

  18. Bindings • The binding controls the messaging details (what happens on the wire) for that endpoint. • Common bindings are common recipes as to how WCF will configure the underlying channel stacks. • There are countless extensibility points found throughout the WCF channel layer

  19. Sample Binding (older WCF)

  20. ABC’s: Address, Binding, Contract

  21. TechFuse Suites: Configuration

  22. Hosting the Service

  23. Hosting the Service • A WCF Service is a library, it has no life of its own • The host brings the WCF service to life by providing the process in which it operates. • Most of the time, WCF services will run in a ready-made host environment such as Internet Information Server (IIS) or Azure • A lot of things require a host!

  24. Creating the Host • Create references to: • System.Runtime.Serialization • System.ServiceModel • Your WCF service assembly • Create an instance of the ServiceHost class (System.ServiceModel.ServiceHost), passing in a reference to your own service class • Call ServiceHost.Open() to start your service and ServiceHost.Close() to stop it. • Configure the server settings in the .config file for the Host application.

  25. TechFuse Suites: Host Application

  26. Using a WCF Service Creating a Client

  27. Consuming a service • Because WCF exposes service functionality through open standards, such as SOAP, you can use almost any type of client to consume the service. • Allowing a .NET client to consume the service is as easy as creating a service reference or generating a proxy through a command-line utility (svcutil.exe) • Non-.NET clients would typically use SOAP to consume a WCF Service

  28. Creating the Client • Create a proxy class by using svcutil.exe or creating a service reference. • Configure the client settings in the .config file for the client application • Call the open method on the proxy to establish a connection to the service and the close method to end it. • Call the operations on the service as you would any method

  29. A TechFuse Suites Client

  30. Other Things You Can Do with WCF • Secure Services • RESTful Services • Routing • Streaming • Discovery • Web Sockets • …and much, much, more

  31. What’s New in WCF 4.5 • Config File Tootips, IntelliSense • Contract-First Generation • Generate Classes from Sample XML • ASP.NET compatibility mode defaults to “true” • WCF Configuration Validation • Streaming Improvements • Single WSDL • ChannelFactory Caching • UDP Support • HttpClient Class

  32. Review • What does it mean to be SOA? • Contracts and Service Implementation • Bindings and Behaviors • Hosting the Service • Consuming WCF Services • What’s New in WCF 4.5?

  33. References • Wikipedia – “Service-Oriented Architecture” http://en.wikipedia.org/wiki/Service-oriented_architecture • Stefan Tilkov, “10 Principles of SOA” http://www.infoq.com/articles/tilkov-10-soa-principles • John Spacey, “The 9 Principles of Service Oriented Design” http://simplicable.com/new/the-9-principles-of-soa-design • MSDN, “How to: Host a WCF Service in a Managed Windows Service” http://msdn.microsoft.com/en-us/library/ms733069.aspx • MSDN, “What’s New in Windows Communication Foundation 4.5” http://msdn.microsoft.com/en-us/library/dd456789.aspx • MSDN, “Basic WCF Programming” http://msdn.microsoft.com/en-us/library/ms731067.aspx • MSDN, “Chapter 1: Service Oriented Architecture” http://msdn.microsoft.com/en-us/library/bb833022.aspx

  34. Thank You! • Ed Jones,MCT, MCPD (Web, Azure), MCTS (WCF, BizTalk) • Email: ed.jones@rbaconsulting.com • Blog: http://talentedmonkeys.wordpress.com • LinkedIn: http://www.linkedin.com/in/edjjones/ http://www.rbaconsulting.com

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