title: Retrieve browser headers in Python
body: <p>I'm currently drawing a blank as how to get the current browser header information for a user in Python Tornado? For example, in PHP you'd simple view the $_SERVER data. What is Tornado's alternative?</p>
  
  <p>Note: <a href="https://stackoverflow.com/questions/3110919/how-do-i-get-the-client-ip-of-a-tornado-request">How do I get the client IP of a Tornado request?</a> and the "request" does not work for me.</p>