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Andrew Dunham 286c6ce27c net/dns/resolver: race UDP and TCP queries (#9544) ... Instead of just falling back to making a TCP query to an upstream DNS server when the UDP query returns a truncated query, also start a TCP query in parallel with the UDP query after a given race timeout. This ensures that if the upstream DNS server does not reply over UDP (or if the response packet is blocked, or there's an error), we can still make queries if the server replies to TCP queries. This also adds a new package, util/race, to contain the logic required for racing two different functions and returning the first non-error answer. Updates tailscale/corp#14809 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I4311702016c1093b1beaa31b135da1def6d86316		3 years ago
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cibuild	all: update copyright and license headers	3 years ago
clientmetric	util/clientmetric: allow client metric values to be provided by a function	3 years ago
cloudenv	all: update copyright and license headers	3 years ago
cmpver	util/cmpver: add a few tests covering different OS versions	3 years ago
cmpx	all: update exp/slices and fix call sites	3 years ago
codegen	util/codegen: support embedded fields	3 years ago
cstruct	all: update copyright and license headers	3 years ago
deephash	util/deephash: add IncludeFields, ExcludeFields HasherForType Options	3 years ago
dirwalk	all: use tstest.Replace more	3 years ago
dnsname	cmd/tailscale: extend hostname validation (#7678)	3 years ago
goroutines	util/goroutines: let ScrubbedGoroutineDump get only current stack	3 years ago
groupmember	all: update copyright and license headers	3 years ago
hashx	all: update copyright and license headers	3 years ago
httpm	util/httpm, all: add a test to make sure httpm is used consistently	3 years ago
jsonutil	all: update copyright and license headers	3 years ago
limiter	util/lru, util/limiter: add debug helper to dump state as HTML	3 years ago
lineread	all: update copyright and license headers	3 years ago
linuxfw	util/linuxfw: fix crash in DelSNATRule when no rules are found	3 years ago
lru	util/lru: update c.head when deleting the most recently used entry	3 years ago
mak	various: add golangci-lint, fix issues (#7905)	3 years ago
multierr	all: use Go 1.21 slices, maps instead of x/exp/{slices,maps}	3 years ago
must	all: update copyright and license headers	3 years ago
osdiag	util/osdiag: add query for Windows page file configuration and status	3 years ago
osshare	all: update copyright and license headers	3 years ago
pidowner	all: update copyright and license headers	3 years ago
precompress	all: update copyright and license headers	3 years ago
quarantine	all: update copyright and license headers	3 years ago
race	net/dns/resolver: race UDP and TCP queries (#9544)	3 years ago
racebuild	all: update copyright and license headers	3 years ago
rands	util/rands: add package with HexString func	3 years ago
ringbuffer	util/ringbuffer: move generic ringbuffer from corp repo	3 years ago
set	util/set: add some useful utility functions for Set (#9535)	3 years ago
singleflight	all: update copyright and license headers	3 years ago
slicesx	util/slicesx: add EqualSameNil, like slices.Equal but same nilness	3 years ago
syspolicy	util/syspolicy: add read boolean setting (#9592)	3 years ago
sysresources	util/sysresources, magicsock: scale DERP buffer based on system memory	3 years ago
systemd	all: update copyright and license headers	3 years ago
testenv	util/testenv: add new package to hold InTest	3 years ago
truncate	util: add truncate package (#7490)	3 years ago
uniq	all: update copyright and license headers	3 years ago
vizerror	util/vizerror: add As function to get wrapped Error	3 years ago
winutil	winutil: refactor methods to get values from registry to also return (#9536)	3 years ago