title: Invalid Operation Exception
body: <p>I created a WCF Serice that worked fine when hosted on IIS.</p>
  
  <p>now, I took the same service, and created a host application in WPF, and when trying to start the service from that application, I get this exception :</p>
  
  <pre><code>The HttpGetEnabled property of ServiceMetadataBehavior is set to true and the   
  HttpGetUrl property is a relative address, but there is no http base address.  
  Either     supply an http base address or set HttpGetUrl to an absolute address.
  </code></pre>