Windows communication foundation Windows Communication Foundation (WCF) is a framework for building service-oriented applications. Using WCF, you can send data as asynchronous messages from one service endpoint to another. A service endpoint can be part of a continuously available service hosted by IIS, or it can be a service hosted in an application. An endpoint can be a client of a service that requests data from a service endpoint. The messages can be as simple as a single character or word sent as XML, or as complex as a stream of binary data. A few sample scenarios include: A secure service to process business transactions. A service that supplies current data to others, such as a traffic report or other monitoring service. A chat service that allows two people to communicate or exchange data in real time. A dashboard application that polls one or more services for data and presents it in a logical presentation. Exposing a workflow implemented using Windows Workflow Foundation as a WCF service. A Silverlight application to poll a service for the latest data feeds. While creating such applications was possible prior to the existence of WCF, WCF makes the development of endpoints easier than ever. In summary, WCF is designed to offer a manageable approach to creating Web services and Web service clients.

1. WINDOWS COMMUNICATION
FOUNDATION(WCF)
PRESENTED BY:
KAMAL PATEL
GTU PG SCHOOL
BISAG,GANDHINAGAR

2. Contents
 Introduction
 Service Oriented Architecture
 WCF Architecture
 Steps to create WCF
 Advantages
 References

3. Introduction of WCF
 WCF is a set of .NET technologies (Web services ,.Net Remoting and
enterprises services) for building and running connected systems.
 WCF provides secure, reliable, and transacted messaging along with
interoperability
 WCF applications can be developed in any language which can
target the .NET runtime.
 System.ServiceModel is the assembly that contains core
functionality for WCF.
 A service is a Common Language Runtime (CLR) type that
encapsulates business functionality and exposes a set of methods
that can be accessed by remote clients.

4. When you should use it
 When your business logic has to interact with a variety of client
applications.
 When client apps, which are going to use your service, may be
written in Java or .Net.
 You are targeting a distributed computing architecture.

5. software need for create a WCF
 Visual studio 2005 or Above
 .Net Framework 3.0 or Above
 Microsoft Windows Software Development Kit (SDK)
 Visual studio extensions for WCF and WPF

6. SOA

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

8. Steps to Create WCF service
1. Services in WCF
The WCF applications expose the functionality through
services. A Service is a Common Language Runtime(CLR) type that
encapsulate business functionality and exposes a set of methods
that can be accessed by remote clients.

9. Cont…
2. Addresses
In WCF, every service is associated with a unique address. The
address provides two important elements: the location of the
service and the transport protocol or transport schema used to
communicate with the service. The location portion of the address
indicates the name of the target machine, site, or network; a
communication port, pipe, or queue; and an optional specific path
or URI.
TCP Addresses
Ex. net.tcp://localhost:8002/MyService.
HTTP Addresses
Ex. http://localhost:8001

10. Cont…
3. Contracts
In WCF, all services expose contracts. The contract is a
platform-neutral and standard way of describing what the service
does. WCF defines four types of contracts
 Service Contracts
 Data Contracts
 Fault Contracts
 Message Contracts

11. Cont…
4. Hosting
Every WCF service must be hosted in a Windows process
called the host process. A single host process can host multiple
services, and the same service type can be hosted in multiple host
processes. The host can be provided by IIS, by the Widows Activation
Service (WAS) on Windows Vista, or by the developer as part of the
application.

12. Cont…
5. Bindings
WCF groups together a set of communication aspects in
bindings. A binding is merely a consistent, canned set of choices
regarding the transport protocol, message encoding, communication
pattern, reliability, security, transaction propagation, and
interoperability.
• Basic Binding
• TCP Binding
• P2P Binding
• IPC Binding
• WS Binding
• Federated WS Binding
• Duplex WS Binding

13. Cont…
6. End Points
Every service is associated with an address that defines where the
service is, a binding that defines how to communicate with the
service, and a contract that defines what the service does. The
endpoint is the fusion of the address, contract, and binding (ABC)

14. Cont…
Address :- The address is obviously the location of the service,
such as ‘net.pipe://localhost/LocalTimeService’
Binding:- The binding specifies security options, encoding
options, and transport options.
Contract:- the contract is the actual interface that the service
implements.

15. Advantages of WCF
• Makes UI programming & distributed programming very easy.
• Reduce complexity by allowing us to focus on single
programming model rather than learn multiple programming
models.
• Helps us talk to various applications written in various languages
with ease which means more probable revenues as various
applications can start using your core services with ease.
• Helps us forget about interoperability between various
underlying web service technologies in the past, present and
future.
• With WCF, a single service can be defined and exposed over
multiple endpoints to support multiple protocols at the same
time.

16. References
 Xiong Guang-cai; Wang Zhi-feng; Zhang Xin-jia; Ji Guo-jun "Research on
supply chain management security under Windows Communication
Foundation", Service Systems and Service Management (ICSSSM), 2012 9th
International Conference on, On page(s): 845 - 849
 Guo Yunhua; YU Yonghua “A Message Service System Based on WCF Duplex
Communication” 2012 International Conference on Computer Science and
Service System, Page(s): 1480 - 1483
 Lojka, T.; Miskuf, M.; Zolotova, I. "Service oriented architecture for remote
machine control in ICS", Applied Machine Intelligence and Informatics (SAMI),
2014 IEEE 12th International Symposium on, On page(s): 327 - 330