Clean Up WCF Clients : The Right Way. As I've done more and more WCF work recently, I've noticed an intermittent problem running my unit tests.
The host seemingly hangs for no obvious reason. Eventually the connection times out and produces the following in the service log: System.ServiceModel.CommunicationObjectAbortedException, System.ServiceModel, Version=3.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089 Stopping the host and client and re-running the test allows it to pass without issue. The problem is related to the way I managed my WCF channels and client proxies. #region IdentityService Proxy private static IIdentityService _identitySvc; private static IIdentityService identitySvc { get { if (_identitySvc == null) { var factory = new ChannelFactory<IIdentityService>("IdentityService"); _identitySvc = factory.CreateChannel(); } return _identitySvc; } } #endregion The client proxy produced implements the typed interface "IIdentityService" in the above example. The secret lies in the casting. Windows Communication Foundation FAQ quick starter Part 2.
Updated with links of WCF-Part1, WPF, WWF, WCF Tracing FAQ, 8 steps to enable Windows authentication on WCF BasicHttpBinding , Difference between BasicHttpBinding and WsHttpBinding & WCF FAQ Part 3 – 10 security related FAQ, SilverLight FAQ Part 1 & Part 2, LINQ Part1, Part2 & Part3 and One-Many and One-One relationship using LINQ to SQL.
Windows Communication Foundation FAQ quick starter - Part 2 Introduction In this section we will run through a quick FAQ for WCF. I am sure after reading this you will get a good understanding of the fundamentals of WCF. Watch my 500 videos on various topics like design patterns,WCF, WWF , WPF, LINQ ,Silverlight,UML, Sharepoint ,Azure,VSTS and lot more @ click here , you can also catch me on my trainings @ click here. Windows Communication Foundation FAQ quick starter Part 1. Updated with links to WCF-Part 2, WPF, WWF, WCF Tracing FAQ, 8 steps to enable Windows authentication on WCF BasicHttpBinding, difference between BasicHttpBinding and WsHttpBinding, WCF FAQ Part 3 – 10 security related FAQ, SilverLight FAQ Part 1 and Part 2, One-Many and One-One relationship using LINQ to SQL.
Difference between BasicHttpBinding and WsHttpBinding. Download source code - 144.55 KB Table of Contents Introduction and Goal WCF has introduced lot of bindings and protocols.
This article will concentrate on two important protocols BasicHttpBinding and WsHttpBinding which look similar but have some huge fundamental differences. We will first start with the difference and then we will create a small project and see how the differences look practically. Nowadays I am distributing my 400 questions and answers ebook which covers major .NET related topics like WCF, WPF, WWF, AJAX, core .NET, SQL Server, architecture, and a lot more. Transport Quotas. Configuring Services Using Configuration Files. Configuring a Windows Communication Foundation (WCF) service with a configuration file gives you the flexibility of providing endpoint and service behavior data at the point of deployment instead of at design time.
This topic outlines the primary techniques available. A WCF service is configurable using the .NET Framework configuration technology. Most commonly, XML elements are added to the Web.config file for an Internet Information Services (IIS) site that hosts a WCF service. The elements allow you to change details such as the endpoint addresses (the actual addresses used to communicate with the service) on a machine-by-machine basis. WCF Throttling. Introduction WCF throttling can be quite strange to the uninitiated, especially as the different settings interact in different ways with various other options, making it all quite confusing really.
I was looking up resources via Google on the entire concept of throttling in WCF. There are some very good pages if you use Google; sadly, MSDN is most definitely not on the list as it is practically useless for anything except class definitions. I decided to try to put into one document an overview of how throttling works, along with some sample projects to help get your head around it. Windows Communcation Foundation Bindings. A binding is made up of a collection of binding elements.
Each element describes some aspect of how the endpoint communicates with clients. A binding must include at least one transport binding element, at least one message-encoding binding element (which the transport binding element can provide by default), and any number of other protocol binding elements. The process that builds a runtime out of this description allows each binding element to contribute code to that runtime.
Using Data Contracts. A data contract is a formal agreement between a service and a client that abstractly describes the data to be exchanged.
That is, to communicate, the client and the service do not have to share the same types, only the same data contracts. A data contract precisely defines, for each parameter or return type, what data is serialized (turned into XML) to be exchanged. Example [ServiceContract] public interface ISampleInterface { // No data contract is required since both the parameter // and return types are primitive types.
[OperationContract] double SquareRoot(int root); // No Data Contract required because both parameter and return // types are marked with the SerializableAttribute attribute. Namespace MyTypes { [DataContract] public class PurchaseOrder { private int poId_value; // Apply the DataMemberAttribute to the property. Notes. Service Contracts. Metadata. Web Service Definition Language (WSDL) Abstract WSDL is an XML format for describing network services as a set of endpoints operating on messages containing either document-oriented or procedure-oriented information.
The operations and messages are described abstractly, and then bound to a concrete network protocol and message format to define an endpoint. Related concrete endpoints are combined into abstract endpoints (services). WSDL is extensible to allow description of endpoints and their messages regardless of what message formats or network protocols are used to communicate, however, the only bindings described in this document describe how to use WSDL in conjunction with SOAP 1.1, HTTP GET/POST, and MIME.
Status This document is a submission to the World Wide Web Consortium (see Submission Request, W3C Staff Comment) as a suggestion for describing services for the W3C XML Activity on XML Protocols. This draft represents the current thinking with regard to descriptions of services within Ariba, IBM and Microsoft. What Is Windows Communication Foundation. Chapter 1: Service Oriented Architecture (SOA) “SOAs are like snowflakes – no two are alike.” - David Linthicum Consultant Contents Reader ROIAcknowledgementsIntroduction to SOAUnderstanding ServicesAn Abstract SOA Reference ModelRecurring Architectural CapabilitiesManagementSupporting the Common Architectural CapabilitiesCommon Architectural Capabilities and the Abstract SOA ModelSummaryReferences Reader ROI Readers of this chapter will learn about some of the general concepts generally associated with Service Oriented Architectures (SOA).
Acknowledgements The vast majority of this book consists of content from a wide variety of people. Many of the concepts in Chapter One are based upon earlier published efforts. Service-oriented architecture. See also the client-server model, a progenitor concept A Service-Oriented Architecture (SOA) is a design pattern in which software/application components provide services to other software/application components via a protocol, typically over a network and in a loosely-coupled way. The principles of service-orientation are independent of any vendor, product or technology.[1] Introducing Windows Communication Foundation in .NET Framework 4. David Chappell Chappell & Associates April, 2009 Updated: March 2010 Download this article. Www.c-sharpcorner.com/uploadfile/SunilBabuYLV/wcf-programming-for-beginners/Default.aspx. Windows Communication Foundation (WCF) Windows Communication Foundation (WCF) is a dedicated communication framework provided by Microsoft.
WCF is a part of .NET 3.0. The runtime environment provided by the WCF enables us to expose our CLR types as services and to consume other existing services as CLR types. Background: Implement ASP.Net AJAX AutoCompleteExtender using WCF Web Service. In this article I will explain how to use ASP.Net AJAX Control Toolkit AutoCompleteExtender using ASP.Net WCF (Windows Control Foundation) web service. Database For database I am using the Microsoft’s Northwind Database. You can download the same using the link below Connection String.
REST in WCF Blog Series Index. .Net. WCF Training :- What is WCF fault exceptions ? ( Interview question) A Beginner's Tutorial for Understanding Windows Communication Foundation (WCF) Dynamic LINQ to Entities Queries Using WCF/WPF Demo Code. .NET Framework. Introduction to Windows Communication Foundation. Robert Green MCW Technologies Download Articles in this series. Learn The ABCs Of Programming Windows Communication Foundation. [ashKAP] by Ashish Kapoor.