title: wsDualHttpBinding and clientBaseAddress with duplex connecton
body: <p>I have seen people use clientBaseAddress at the time of wsDualHttpBinding binding. What is clientBaseAddress.What special meaning it bears. </p>
  
  <p>1) What is the significant of clientBaseAddress ?
  2) If I do not provide clientBaseAddress then what problem may occur?</p>
  
  <p>Looking for discussion.</p>