sneak 87aa5c2d04 resolver: try servers in a random order on each resolution (closes #138) ...

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, the root servers
and the nameservers of each zone below them, is now walked in a random
order from the standard library's rand.Shuffle, chosen anew each time.
Failover is unchanged: a server that does not reply, or refuses, is
passed over for the next; any other reply, even a SERVFAIL, is used.
The shuffle is passed in, so the tests check the order with a seeded
source; which server a live query reached is not observable, so no
test fails if the walk stops shuffling.

Model: opus-5-5

2026-10-01 22:47:08 +00:00

..

dns_client.go

tests: remove the DNS stand-ins from the watcher and resolver tests (closes #159)

2026-09-29 08:44:07 +02:00

errors.go

resolver: error from ResolveIPAddresses when no nameserver answered (closes #190)

2026-10-02 00:28:53 +02:00

export_test.go

resolver: try servers in a random order on each resolution (closes #138)

2026-10-01 22:47:08 +00:00

iterative_test.go

resolver: try servers in a random order on each resolution (closes #138)

2026-10-01 22:47:08 +00:00

iterative.go

resolver: try servers in a random order on each resolution (closes #138)

2026-10-01 22:47:08 +00:00

livedns_harness_test.go

tests: remove the DNS stand-ins from the watcher and resolver tests (closes #159)

2026-09-29 08:44:07 +02:00

livedns_test.go

tests: rename internal/livedns to livednstest and deny it outside tests (closes #164)

2026-10-01 19:52:48 +02:00

resolver_test.go

resolver: error from ResolveIPAddresses when no nameserver answered (closes #190)

2026-10-02 00:28:53 +02:00

resolver.go

tests: remove the DNS stand-ins from the watcher and resolver tests (closes #159)

2026-09-29 08:44:07 +02:00