title: C# : Authenticate server certificate before sending HTTP GET / POST
body: <p>I'm building a .net app, and I'd like to make the web calls secure enough that its not easy to monitor the the traffic thru something like fiddler.  I'd like to be able to know that the certificate from the server isn't as expected and then never send out a full request with the request data.</p>
  
  <p>Twitter's iOS app does this.  Someone I think would have to somehow make a copy of the twitter's https certificate and make that fiddler's certificate.  I havn't done it myself, but i think that's how I understand it.  What you see in fiddler is that the tunnel has been created, but no request was actually set out.  Its same scenario when you don't have the fiddler's HTTPS certificate installed on the device and you open a browser to google.com / a tunnel is created and then the browser knows 'uhoh untrusted server' and displays a message to the user.  I'd like to just make it more secure and only allow 1 certificate / my server's certificate.</p>
  
  <p>Make sense?  I think i figured out how to do it with making a separate full dummy request / but thats not ideal. </p>