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A Beginner's Guide to Duplex WCF

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8 May 2013CPOL21 min read 194.3K   8.8K   107  
The purpose of this article is to create a service which accepts messages from any client and redistributes those messages to all subscribed clients, and a client that can subscribe to the service, send messages to it and receive unrelated messages from it regardless of how many it sends.
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

// General Information about an assembly is controlled through the following 
// set of attributes. Change these attribute values to modify the information
// associated with an assembly.
[assembly: AssemblyTitle("GPH_QuickMessageServiceLib")]
[assembly: AssemblyDescription("")]
[assembly: AssemblyConfiguration("")]
[assembly: AssemblyCompany("Microsoft")]
[assembly: AssemblyProduct("GPH_QuickMessageServiceLib")]
[assembly: AssemblyCopyright("Copyright © Microsoft 2012")]
[assembly: AssemblyTrademark("")]
[assembly: AssemblyCulture("")]

// Setting ComVisible to false makes the types in this assembly not visible 
// to COM components.  If you need to access a type in this assembly from 
// COM, set the ComVisible attribute to true on that type.
[assembly: ComVisible(false)]

// The following GUID is for the ID of the typelib if this project is exposed to COM
[assembly: Guid("00c10904-c3a2-4375-a81f-493c8ffd542d")]

// Version information for an assembly consists of the following four values:
//
//      Major Version
//      Minor Version 
//      Build Number
//      Revision
//
// You can specify all the values or you can default the Build and Revision Numbers 
// by using the '*' as shown below:
// [assembly: AssemblyVersion("1.0.*")]
[assembly: AssemblyVersion("1.0.0.0")]
[assembly: AssemblyFileVersion("1.0.0.0")]

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Software Developer
Ireland Ireland
My first program was written in Basic on a Sinclair Spectrum ZX 16K in the summer of '85. Having studied Computer Systems I attempted to break into the world of C but took a wrong turn and got immersed in COBOL!

I looked a C again in 1994 but didnt follow up on it. In 2001 I introduced myself to Visual C++ 6.0 courtesy of Ivor Hortons book, but found the going difficult. I tipped my toe in the .NET water in '05 but the first example I tried in VC++ 2005 express didnt work and allied with the absence of MFC in the express package, I parked that up.

Along the way my career got shunted into software testing

A personal machine change force me to migrate to VS2008 in 2008. The new edition of Ivor Hortons book for VC++ in VS2008 reintroduced me to .NET and I got curious whereupon I went out and acquired Stephen Fraser's "Pro Visual C++/CLI and
the .NET 3.5 Platform". I was hooked!

After 20 years I think I finally found my destination.

But it would take a further 8 years of exile before I was reappointed to a developer role. In that time I migrated to C# and used selenium wedriver (courtesy of Arun Motoori's Selenium By Arun) as the catalyst to finally grab the opportunity.

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