title: How to SSO using Rally.RestApi.dll?
body: <p>Until now, I have read that Rally RestAPI do not support SSO login. I believe this is no longer true as of Jan 2014. The same API is used in Rally Add-in for Excel (here is link for <a href="https://help.rallydev.com/es/rally-add-excel-installation-user-guide" rel="nofollow">Rally Add-in for Excel</a>) which support SSO login. Can I get either the source code of Rally Excel Add-in or at least someone please provide an example of SSO using Rally RestAPI?</p>
  
  <p>I want to do exactly the same thing what Excel Addin Export functionality does but want to do in pure .net application.</p>