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tailscale/net/dns
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Andrew Dunham 530aaa52f1 net/dns: retry forwarder requests over TCP 
We weren't correctly retrying truncated requests to an upstream DNS
server with TCP. Instead, we'd return a truncated request to the user,
even if the user was querying us over TCP and thus able to handle a
large response.

Also, add an envknob and controlknob to allow users/us to disable this
behaviour if it turns out to be buggy (✨ DNS ✨).

Updates #9264

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: Ifb04b563839a9614c0ba03e9c564e8924c1a2bfd
 		2023-09-25 16:42:07 -04:00
..
publicdns net/dns/publicdns: update Quad9 addresses and references 2023-09-20 16:55:58 -07:00
recursive all: use Go 1.21 slices, maps instead of x/exp/{slices,maps} 2023-08-17 08:42:35 -07:00
resolvconffile all: update to Go 1.20, use strings.CutPrefix/Suffix instead of our fork 2023-02-01 15:23:54 -08:00
resolver net/dns: retry forwarder requests over TCP 2023-09-25 16:42:07 -04:00
config.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
debian_resolvconf.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
direct.go net/dns: overwrite /tmp/resolv.conf on gokrazy 2023-07-23 09:53:32 -07:00
direct_linux.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
direct_notlinux.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
direct_test.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
flush_default.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
flush_windows.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
ini.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
ini_test.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
manager.go net/dns: retry forwarder requests over TCP 2023-09-25 16:42:07 -04:00
manager_darwin.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
manager_default.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
manager_freebsd.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
manager_linux.go net/dns: detect when libnss_resolve is used 2023-07-20 18:26:23 +02:00
manager_linux_test.go net/dns: detect when libnss_resolve is used 2023-07-20 18:26:23 +02:00
manager_openbsd.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
manager_tcp_test.go net/dns: retry forwarder requests over TCP 2023-09-25 16:42:07 -04:00
manager_test.go net/dns: retry forwarder requests over TCP 2023-09-25 16:42:07 -04:00
manager_windows.go net/dns: deal with Windows wsl.exe hangs 2023-03-06 16:08:13 -07:00
manager_windows_test.go various: add golangci-lint, fix issues (#7905) 2023-04-17 18:38:24 -04:00
nm.go net/{interfaces,netmon}: remove "interesting", EqualFiltered API 2023-08-29 11:57:30 -07:00
noop.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
nrpt_windows.go all: use set.Set consistently instead of map[T]struct{} 2023-09-09 10:59:19 -07:00
openresolv.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
osconfig.go wgengine/magicsock, controlclient, net/dns: reduce some logspam 2023-09-23 11:52:47 -07:00
osconfig_test.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
resolvconf-workaround.sh all: update copyright and license headers 2023-01-27 15:36:29 -08:00
resolvconf.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
resolvconfpath_default.go net/dns: overwrite /tmp/resolv.conf on gokrazy 2023-07-23 09:53:32 -07:00
resolvconfpath_gokrazy.go net/dns: overwrite /tmp/resolv.conf on gokrazy 2023-07-23 09:53:32 -07:00
resolvd.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
resolved.go net/dns: don't send on closed channel in resolvedManager 2023-03-24 15:34:54 -04:00
utf.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
utf_test.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
wsl_windows.go net/dns: deal with Windows wsl.exe hangs 2023-03-06 16:08:13 -07:00