title: WCF client config: centralized endpoint address
body: <p>i've a WCF client wicht refers to multiple services hosted in the same machine. like this example</p>
  
  <pre><code>&lt;client&gt;
     &lt;endpoint address="net.tcp://localhost:8731/TrackingService" binding="netTcpBinding" ...
     &lt;/endpoint&gt;
     &lt;endpoint address="net.tcp://localhost:8731/CommonService" binding="netTcpBinding"...
     &lt;/endpoint&gt;
  &lt;/client&gt;
  </code></pre>
  
  <p>is it possible to modify my app.config in order to keep the</p>
  
  <pre><code>net.tcp://localhost:8731
  </code></pre>
  
  <p>part of endpoint address in a different variable, so when i'll deploy i have to change it once?</p>
  
  <p>Maybe a programmatically clever way to do this? My only need is to change "address:port".</p>
  
  <p>Thank you in advance</p>