Testing Duplex WCF Services

Steps to test Duplex WCF Services

  1. Add the service (Step #1 Getting started)
  2. Save the generated proxy assembly
    save proxy assembly

    Important : Do not rename the saved dll file!
  3. Create a C# class library project
    1. Add a reference to WcfStorm.Plugin.dll (found in the same folder as wcfstorm.exe)
    2. Add a reference to System.Runtime.Serialization
    3. Add a reference to the DLL saved in step 2.

      Callback plugin project references
      Important : Always set Copy Local to true for any dll references.
    4. Implement the callback interface exposed by the service
    5. Add the [DuplexCallback] attribute to the class in step "d" above.  Compile.

      Sample callback plugin code:   (You can find the Duplex WCF Service in the download link at the bottom)
      using System;
      using System.Collections.Generic;
      using System.Linq;
      using System.Text;
      using WcfStorm.Plugin.Callback;
      using System.Windows.Forms;
      namespace TestWcfCallBack_ClientImplementation
      DuplexCallBack(Description = "Implementation of ICallBack")]
      public class Class1 : IService1Callback
              #region IService1Callback Members
      //This callback will triggered by invoking the SignupForAlert method on the service
              public void AlertClient(string alertMessage)


  4. Load the compiled DLL (output of step 3) by following these steps.  WCFStorm will then re-load the service from on the proxy assembly (saved in step #2) and load the callback plugin (created in step #3).  If all went well, the dll icon will show up under the Custom folder (see screnshot below)

    Load callback plugin

    Download source code



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