class RodaSessionMiddleware

returned, then persist the session in the cookie.
application, and if the session has been loaded after the result has been
Initialize the session hash in the environment before calling the next

def call(env)
  session = env['rack.session'] = SessionHash.new(@req_class.new(nil, env))
  res = @app.call(env)
  if session.loaded?
    session.req.persist_session(res[1], session.data)
  end
  res
end