WCF Client Error : Could not connect to net.tcp. No connection could be made because the target acticely refused it

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C#

WCF

WCFServices

I have a following class and the interface

ServiceBehavior(InstanceContextMode = InstanceContextMode.Single)]
    public class ClassA:IInterfaceA,IDisposable
    {

        ServiceHost serviceHost; // Disposable


        public string[] GetValues()
        {
            string[] returnValue = new string[]{"A","B"};
            return returnValue;
        }

        
        public virtual ClassA StartServiceHost()
        {
            using (serviceHost = new ServiceHost(this))
            {
                serviceHost.Open();
                return (ClassA)serviceHost.SingletonInstance;
            }
        }


        #region IDisposable Members

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

               protected virtual void Dispose(bool disposing)
        {
            if (disposing)
            {
                if (serviceHost != null)
                {
                    try
                    {
                        serviceHost.Close();
                        ((IDisposable)serviceHost).Dispose();
                    }
                    finally
                    {
                        serviceHost = null;
                    }
                }
            }
        }

        #endregion
    }




    [ServiceContract(SessionMode = SessionMode.Required)]
    public interface IInterfaceA
    {
        [OperationContract(IsOneWay = false)]
        string[] GetValues();

    }

Here is the client class for the same.

public class ClassAClient:IDisposable
   {
       protected ChannelFactory<IInterfaceA> channelFactory;

       protected IInterfaceA server;

       protected const string EndpointName = "ClassServiceEndpoint";



       #region IDisposable Members

       bool isDisposed;

              public void Dispose()
       {
           Dispose(true);
       }

       
       protected virtual void Dispose(bool disposing)
       {
           if (!isDisposed)
           {
               if (disposing)
               {
                   // Dispose of managed resources
                   isDisposed = true;
               }
           }
           // Dispose of unmanaged resources
       }

       #endregion

              
     protected virtual void Connect()
       {
           if (server == null)
           {
               if (channelFactory == null)
               {
                   channelFactory = new ChannelFactory<IInterfaceA>(EndpointName);
               }

               if (channelFactory != null)
               {
                   server = channelFactory.CreateChannel();
               }
           }
       }

       public virtual string[] GetValues()
       {
           Connect();
           if (server != null)
           {
               try
               {
                   return server.GetValues();
               }
               catch (Exception ex)
               {
                   //Log
                   throw;
               }
           }
           return null;

       }
   }

Now when I try to host the service and use the client in the same console application. I get the following error:

"Could not connect to net.tcp://localhost:8000/ClassAService. The connection attempt lasted for a time span of 00:00:02.0150000. TCP error code 10061: No connection could be made because the target machine actively refused it 127.0.0.1:8000".

I surfed and found that it is due to port being blocked by Firewall. But its not the same with my case. I verified. It didn't work even after change the port numbers.


Here is app.config(both in same app.config)

<service behaviorConfiguration="ServiceBehavior" name="Experiment.ClassA">
        <endpoint address="net.tcp://localhost:8000/ClassAService"
          behaviorConfiguration="EndPointBehaviour" binding="netTcpBinding"
          bindingConfiguration="tcpBinding" contract="Experiment.IInterfaceA">
</endpoint>
</service>

Client:


<client>

<endpoint address="net.tcp://localhost:8000/ClassAService" behaviorConfiguration="EndPointBehaviour"  binding="netTcpBinding" bindingConfiguration="tcpBinding"
                contract="Experiment.IInterfaceA" name="ClassServiceEndpoint">
        <identity>
          <dns value="localhost" />
        </identity>
      </endpoint>
    </client>

Console application Host:

var classAServer = new ClassA();           
            classAServer.StartServiceHost();
            Console.WriteLine("Config Service Started");
            ClassAClient clasClient = new ClassAClient();
            var value = clasClient.GetValues();
            Console.ReadLine();