URL auth does not work with HTTP/2 servers
Using URL auth with a HTTP/2 capable sever does not work properly:
[2021-04-25 13:40:34] DBUG auth_url/handle_returned_header Got header: "HTTP/2 200 .."
[2021-04-25 13:40:34] DBUG auth_url/handle_returned_header Got header: "date: Sun, 25 Apr 2021 11:40:34 GMT.."
[2021-04-25 13:40:34] DBUG auth_url/handle_returned_header Got header: "server: Apache.."
[2021-04-25 13:40:34] DBUG auth_url/handle_returned_header Got header: "x-icecast-auth-result: ok.."
[2021-04-25 13:40:34] DBUG auth_url/handle_returned_header Got header: "x-icecast-auth-alter-action: redirect_permanent.."
[2021-04-25 13:40:34] DBUG auth_url/handle_returned_header Got header: "x-icecast-auth-alter-argument: https://stream.example.com/hits/highquality.."
[2021-04-25 13:40:34] DBUG auth_url/handle_returned_header Got header: "content-type: application/json.."
[2021-04-25 13:40:34] DBUG auth_url/handle_returned_header Got header: ".."
[2021-04-25 13:40:34] EROR auth_url/handle_returned_header__complete Can not parse auth backend reply.