![Steps for Creating WCF
Services
• Design and Implement WCF Services
- [ServiceContract] & [ServiceBehavior]
- [OperationContract] & [OperationBehavior]
- [DataContract] & [DataMember]
- [MessageContract] & [MessageHeader] &
[MessageBodyMember]
- [FaultContract]
• Configure WCF Services
- web.config or app.config
- Endpoint details: Address, Binding & Contract
(SvcConfigEditor.exe)](https://image.slidesharecdn.com/wcfpresentation-240811132027-d12790db/85/WCFPresentation-ppt-WCFPresentation-ppt-WCFPresentation-ppt-14-320.jpg)
![ServiceContract
Use the ServiceContract attribute on an interface
(or class) to define a service contract.
ServiceContract combined with an endpoint and
address exposes the service to the client
Service class will implement a ServiceContract –
Implementing the interface marked with
ServiceContract attribute
Example:-
[ServiceContract]
public interface IMyFirstService
{
//TODO : Define your Operations here
}](https://image.slidesharecdn.com/wcfpresentation-240811132027-d12790db/85/WCFPresentation-ppt-WCFPresentation-ppt-WCFPresentation-ppt-15-320.jpg)
![OperationContract
OperationContract attribute is used in the class
(or interface) methods to define the contract's
service operations
OperationContract exposes the service operation
to the client
All Service Operations (methods) to be exposed
to the clients should be marked with
OperationContract attribute
Example:-
[ServiceContract]
public interface IMyFirstService
{
[OperationContract]
string GetData(int value);
}](https://image.slidesharecdn.com/wcfpresentation-240811132027-d12790db/85/WCFPresentation-ppt-WCFPresentation-ppt-WCFPresentation-ppt-16-320.jpg)
WCFPresentation.ppt WCFPresentation.ppt WCFPresentation.ppt
- 2. Agenda • .NET Framework 3.5 Overview • Web Services Overview • Remoting Overview • WCF Overview • Elements of WCF & WCF Architecture • Different Types of WCF Services • Creating your first WCF Service • Service Endpoint Configurations • Service and Data contracts • Consuming your WCF Service from Clients • Tools used in creating Proxies
- 5. Windows Communication Foundation (WCF) • WCF is Microsoft’s unified programming model that combines the best of .NET distributed systems technologies such as: - ASP.NET Web Services (ASMX) - .NET Remoting (Remoting) - Enterprise Services (COM+) - Web Services Enhancements (WSE) - Microsoft Message Queuing (MSMQ) - Representational State Transfer (REST)
- 6. What WCF Provides? • Unification of Microsoft’s Distributed Computing Technologies • Interoperability with Applications Built on Other Technologies • Interoperability with Other Web Services Platforms • Interoperability with Microsoft’s Pre-WCF Technologies • Explicit Support for Service-Oriented Development • Framework for building services that process XML messages • Allows to transmit messages using different transport protocols (such as HTTP, TCP, and MSMQ) and using different XML representations (such as text, binary, or MTOM)
- 7. WCF - Unified Programming Model
- 8. WCF - Unified Programming Model
- 10. WCF End Points
- 11. The Structure of an Endpoint Address: The address uniquely identifies the endpoint and tells potential consumers of the service where it is located. EndPoint usingwsHttpBinding • <add baseAddress="http://localhost:8550/YourNameSpace.You rServiceCV/" /> Endpoint using netNamedPipeBinding • <add baseAddress="net.pipe://localhost/YourNameSpace.YourS erviceCV/" />
- 12. WCF Bindings Binding Configuration Element Description BasicHttpBinding <basicHttpBinding> A binding that is suitable for communicating with WS-Basic Profile conformant Web services, for example, ASP.NET Web services (ASMX)-based services. This binding uses HTTP as the transport and text/XML as the default message encoding. WSHttpBinding <wsHttpBinding> A secure and interoperable binding that is suitable for non- duplex service contracts. WSDualHttpBinding <wsDualHttpBinding> A secure and interoperable binding that is suitable for duplex service contracts or communication through SOAP intermediaries. WSFederationHttpBinding <wsFederationHttpBinding> A secure and interoperable binding that supports the WS- Federation protocol that enables organizations that are in a federation to efficiently authenticate and authorize users. NetTcpBinding <netTcpBinding> A secure and optimized binding suitable for cross-machine communication between WCF applications. Bindings are used to specify the transport, encoding, and protocol details required for clients and services to communicate with each other. To generate the underlying wire representation of the endpoint, most of the binding details must be agreed upon by the parties that are communicating.
- 13. WCF Bindings Binding Configuration Element Description NetMsmqBinding <netMsmqBinding> A queued binding that is suitable for cross-machine communication between WCF applications. NetPeerTcpBinding <netPeerTcpBinding> A binding that enables secure, multiple machine communication. MsmqIntegrationBinding <msmqIntegrationBinding> A binding that is suitable for cross-machine communication between a WCF application and existing Message Queuing applications. BasicHttpContextBinding <basicHttpContextBinding> A binding that is suitable for communicating with WS-Basic Profile conformant Web services that enables HTTP cookies to be used to exchange context. NetTcpContextBinding <netTcpContextBinding> A secure and optimized binding suitable for cross-machine communication between WCF applications that enables SOAP headers to be used to exchange context. WebHttpBinding <webHttpBinding> A binding used to configure endpoints for WCF Web services that are exposed through HTTP requests instead of SOAP messages. WSHttpContextBinding <wsHttpContextBinding> A secure and interoperable binding that is suitable for non- duplex service contracts that enables SOAP headers to be used to exchange context. CustomBinding Developer decides Developer decides
- 14. Steps for Creating WCF Services • Design and Implement WCF Services - [ServiceContract] & [ServiceBehavior] - [OperationContract] & [OperationBehavior] - [DataContract] & [DataMember] - [MessageContract] & [MessageHeader] & [MessageBodyMember] - [FaultContract] • Configure WCF Services - web.config or app.config - Endpoint details: Address, Binding & Contract (SvcConfigEditor.exe)
- 15. ServiceContract Use the ServiceContract attribute on an interface (or class) to define a service contract. ServiceContract combined with an endpoint and address exposes the service to the client Service class will implement a ServiceContract – Implementing the interface marked with ServiceContract attribute Example:- [ServiceContract] public interface IMyFirstService { //TODO : Define your Operations here }
- 16. OperationContract OperationContract attribute is used in the class (or interface) methods to define the contract's service operations OperationContract exposes the service operation to the client All Service Operations (methods) to be exposed to the clients should be marked with OperationContract attribute Example:- [ServiceContract] public interface IMyFirstService { [OperationContract] string GetData(int value); }
- 17. DataContract & DataMember Agreement between the client and the service that describes the data to be exchanged DataContract Serializer to serialize and de- serialize data Serialize and De-Serialize is nothing but converting the data to and from xml In order to tell the serialization engine, we need to use DataContract attribute as a prefix for the class and DataMember attribute prefix for the property(data member)
- 19. • WCF Architecture: http://msdn2.microsoft.com/en-us/library/aa4802 10.aspx • Basic WCF Programming: http://msdn2.microsoft.com/en-us/library/ms731 067.aspx • WS-* Protocols: http://msdn2.microsoft.com/en- us/library/ms951274.aspx • WCF Bindings : http://msdn.microsoft.com/en- us/magazine/cc163394.aspx References
- 20. Questions