title: Deleting a Secure Cookie in tornado
body: <p>I just started learning about webservers, tornado in particular.</p>
  
  <p>I want to write a simple webpage with a login function.
  As described in the <a href="http://www.tornadoweb.org/documentation/overview.html#id1">Tornado Documentation</a>, I'm creating a secure cookie after the user was successfully loged-in:</p>
  
  <pre><code>self.set_secure_cookie("user", self.get_argument("user"))
  </code></pre>
  
  <p>But how do I provide the user with a way to log-out?
  As mentioned before, I'm not familiar with web servers, but as I'm checking this cookie when the user attempts to enter the Main-Page, I guess I'd just have to remove it after the user pressed "logout"?</p>
  
  <p>Unfortunately, I could'nt find anything about this in the tornado documentatoin, nor on SO.</p>