[mokaddem]

Registries only hold registered domains, so asking rdap.org for a hostname, a subdomain or the host of a URL returned no record. The module now finds the registered domain with the ICANN section of the Public Suffix List and asks for it once; a public suffix is asked as given. The private section is skipped on purpose: duckdns.org is registered under .org, and its registry answers for duckdns.org, not foo.duckdns.org.

The whois object's domain is the lowercased name that was asked, not RDAP's ldhName, and a comment says when it is the registered domain of the input host. The host is not added as a second domain, so the record does not read as the subdomain's own registration. A 404 or 400 on a domain lookup is reported as no record found, naming both names when they differ. Input is trimmed, lowercased and stripped of a trailing dot. IP lookups are unchanged.

Changes

• The input is trimmed, lowercased and stripped of a trailing dot.
• The module finds the registered domain with the ICANN section of the Public Suffix List and asks rdap.org for it, once per run:
  • login.example.com → example.com
  • news.bbc.co.uk → bbc.co.uk
  • foo.duckdns.org → duckdns.org
• A public suffix (e.g. co.uk) is still asked for as given.
• The whois object's domain is the lowercased name that was queried, not RDAP's ldhName. When that differs from the input host, a comment says so. The host is deliberately not added as a second domain, so the record doesn't read as the subdomain's own registration.
• A 404 or 400 on a domain lookup returns "No RDAP record found for …", naming both names when they differ. Some registries answer 400 rather than 404 for an unknown name.
• IP lookups are unchanged. moduleinfo version goes to 2.

Testing

• 10 new mocked tests; each one checks that exactly one request is made. The existing URL test now expects the registered domain.
• Checked live against rdap.org:
  • www.example.com → example.com (1995-08-14)
  • mail.google.com → google.com (1997-09-15)
  • news.bbc.co.uk → bbc.co.uk (1994-12-13)
  • foo.duckdns.org → duckdns.org (2013-04-12)
  • x.github.io and denic.de return the "no record" error

[adulau]

Good one!