sneak
4ff5f85320
check / check (push) Failing after 2m8s
Every resolution walked the root servers in a fixed order, so a.root-servers.net got every first query and its timeouts were paid on every lookup. Each list of servers the resolver walks is now walked in a random order from rand.Shuffle, chosen anew each time; a server that does not reply, refuses, or gives an error reply or a referral that leads no closer is still passed over for the next. When a referral names a zone's nameservers without their addresses, all of them are now looked up, not only the first that resolves, so the zone is not given up because one randomly picked nameserver failed. No test fails if the walk stops shuffling: which server a live query reached is not observable. Model: opus-5-5