How to change from basicHttpBinding to WSDualHttpBinding in WCF service ?

[1 Sparrow]

Hi!
In one MS VS 2013 solution I develop two projects: 1) WCF service with duplex contract and 2) WPF Client for this service. When I try to add service reference to the client then the following error has place: "Contract requires Session, but baseHttpBinding doesn't support it or isn't configured properly to support it". When I change (in App.config file) from basicHttpBindin g to WSDualHttpBindi ng then I get the following error: "binding attribute not valid: WSDualHttpBindi ng value not valid...".
So how can I change from basicHttpBindin g to WSDualHttpBindi ng?
I display service's App.config file completely below:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>

  <appSettings>
    <add key="aspnet:UseTaskFriendlySynchronizationContext" value="true" />
  </appSettings>
  <system.web>
    <compilation debug="true" />
  </system.web>
    <system.serviceModel>
    <services>
      <service name="DownloadManager.DownloadManagerService">
        <endpoint address="" binding="basicHttpBinding" contract="DownloadManager.IDownloadManagerService">
          <identity>
            <dns value="localhost" />
          </identity>
        </endpoint>
        <endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange" />
        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8733/Design_Time_Addresses/DownloadManager/DownloadManagerService/" />
          </baseAddresses>
        </host>
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior>
          <serviceMetadata httpGetEnabled="True" httpsGetEnabled="True"/>
          <serviceDebug includeExceptionDetailInFaults="True" />
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>

</configuration>

Below I display contract interface:

[ServiceContract(Namespace="http://DownloadManager",SessionMode=SessionMode.Required,
        CallbackContract=typeof(IDownloadManagerServiceCalback))]
public interface IDownloadManagerService
{
  . . . . . . . .
}

And below I display calback interface:

public interface IDownloadManagerServiceCalback
{
        [OperationContract(IsOneWay=true)]
        void UpdateSelectedDownload(Downloader p_SelectedDownload);
}