def logout(self):
cookie = self.request.cookies.get('session', None)
if cookie:
session = UserSession.get_from_cookie(cookie)
if session:
session.delete()
isMobile = utils.isMobileUserAgent(self.request.headers['User-Agent'])
redirect_uri = CONFIG['auth_success_uri_mobile'] if isMobile else CONFIG['auth_success_uri_desktop']
self.redirect(redirect_uri)
