title: Serve contacts stored in CSV via CardDav protocol?
body: <p>I have multiple CSV files with contacts. Each file belongs to a different user. I'd like to give users an option to read contacts using <code>CardDav</code> protocol. It should be READ-ONLY.</p>
  <p>I'm considering <a href="https://radicale.org/v3.html#getting-started" rel="nofollow noreferrer">radical server</a> but I think it handles storage automatically.</p>
  <p>Is there a way to do that without implementing the protocol from scratch?</p>