Exposing through WSDL

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WCF

Hi All,

I have created an service which is exposed using mex endpoint but I am not able to expose it via WSDL?

Can someone please help..Thanks In advance.
My app config is.--

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
    <system.serviceModel>
        <services>
            <service behaviorConfiguration="serviceBehavior" name="GettingStartedLib.CalculatorService">
              <host>
                <baseAddresses>
                  <add baseAddress = "http://localhost:8000/GettingStartedLib/Service1/"/>
               
                </baseAddresses>
              </host>
                <endpoint address="http://localhost:8000/GettingStartedLib/Service1/"
                    binding="basicHttpBinding" bindingConfiguration="" name="httpendpoint"
                    contract="GettingStartedLib.ICalculator" />
                <endpoint address="http://localhost:8000/GettingStartedLib/Service1/mex" binding="mexHttpBinding" contract="IMetadataExchange" />
            </service>
        </services>
      <behaviors>
        <serviceBehaviors>
          <behavior name="serviceBehavior">
            
            <serviceMetadata httpGetEnabled="true"  />
          </behavior>
        </serviceBehaviors>
      </behaviors>
    </system.serviceModel>
</configuration>