Class: MonoVM::Whois::Availability::Rules::RdapObject

Inherits:
MonoVM::Whois::Availability::Rule show all
Defined in:
lib/monovm/whois/availability/rules/rdap_object.rb

Overview

Reads an RDAP response, which says outright whether the object exists.

This is why the library prefers RDAP. Every other rule in the chain infers a verdict from prose that varies by registry, by year and sometimes by query. RDAP does not need inference: a registered domain is a JSON object with an objectClassName of "domain", and an unregistered one is an error document with errorCode 404 (RFC 7480 §5.3, RFC 9083 §6). Both answers are definitive, so this rule sits above all the pattern matching.

Instance Method Summary collapse

Methods inherited from MonoVM::Whois::Availability::Rule

#name

Instance Method Details

#call(context) ⇒ Object 



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# File 'lib/monovm/whois/availability/rules/rdap_object.rb', line 18

def call(context)
  return nil unless context.rdap?

  document = context.json

  # An HTTP 404 is RDAP's "no such domain", whether or not it carried a body.
  if document.nil?
    return nil unless Patterns::RDAP_NOT_FOUND_CODES.include?(context.http_status)

    return available(
      reason: "RDAP answered HTTP 404: no such domain",
      evidence: "HTTP #{context.http_status}"
    )
  end

  verdict_for_error(document, context) || verdict_for_object(document)
end