I am trying to figure out how to use the letsencrypt staging server to verify own staging setup that includes a letsencrypt client. I considered to ask letsencrypt staging to get certificates for names like www.staging.example.com corresponding to www.examle.com in the production.
But that implies that the staging setup will be different from the production. I would like to avoid that. So is it possible to ask the staging server for a certificate for www.example.com using http-01 challenge with the challenge coming to www.staging.example.com?