scriptc

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Chris Tate 55a660f0e2 Add dns.lookup's Node forms, lookupService, getServers and the default result order

- dns.lookup(hostname, callback), lookup(hostname, family, callback)
  and lookup(hostname, options, callback) with family (0/4/6, 'IPv4',
  'IPv6'), all, order and verbatim, validated with Node's messages.
  getaddrinfo answers any family, ordered verbatim or one family first;
  literal addresses answer on the next tick, an empty hostname gives
  Node's null answer and DEP0118 warning, and failures carry code,
  errno, syscall and hostname.
- dns.lookupService(address, port, callback) checks the address and
  port as Node does and answers getnameinfo's host and service.
- dns.getServers() lists the nameservers in /etc/resolv.conf, and
  getDefaultResultOrder/setDefaultResultOrder keep the default order
  ('verbatim').
- A typed callback receives "" and NaN (or []) after a failure, where
  Node passes undefined; the limitations page says so.
Corpus 5648-5650 cover each case; the options-record diagnostics no longer
list the all and hints options as refused.

2026-10-15 16:59:20 -05:00