gistfile1.py

application = tornado.web.Application([
         (r"/test/(.*?)", StaticTrackHandler, {"path": "/home/ubuntu/echostream/tracks"}),
    ], debug=True)

class StaticTrackHandler(tornado.web.StaticFileHandler):

    @classmethod
    def get_current_user(self):
        return self.get_secure_cookie('user')

    @classmethod
    def get_content(self, abspath, start=None, end=None):
        if self.current_user:
            r = requests.get('https://s3.amazonaws.com/echostream-tracks/587b3e4e2a274a06b3b18ce42674af72', stream=True)
            return r.iter_lines()
        else:
            self.redirect('/login')