Andrew Dunham e33bc64cff net/dnsfallback: add singleflight to recursive resolver ... This prevents running more than one recursive resolution for the same hostname in parallel, which can use excessive amounts of CPU when called in a tight loop. Additionally, add tests that hit the network (when run with a flag) to test the lookup behaviour. Updates tailscale/corp#15261 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I39351e1d2a8782dd4c52cb04b3bd982eb651c81e		2023-11-15 13:57:49 -05:00
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dns-fallback-servers.json	net/netaddr: start migrating to net/netip via new netaddr adapter package	2022-07-25 16:20:43 -07:00
dnsfallback_test.go	net/dnsfallback: add singleflight to recursive resolver	2023-11-15 13:57:49 -05:00
dnsfallback.go	net/dnsfallback: add singleflight to recursive resolver	2023-11-15 13:57:49 -05:00
update-dns-fallbacks.go	all: update copyright and license headers	2023-01-27 15:36:29 -08:00