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tailscale/net
Andrea Gottardo dd77111462
xcode/iOS: set MatchDomains when no route requires a custom DNS resolver (#10576)
Updates https://github.com/tailscale/corp/issues/15802.

On iOS exclusively, this PR adds logic to use a split DNS configuration in more cases, with the goal of improving battery life. Acting as the global DNS resolver on iOS should be avoided, as it leads to frequent wakes of IPNExtension.

We try to determine if we can have Tailscale only handle DNS queries for resources inside the tailnet, that is, all routes in the DNS configuration do not require a custom resolver (this is the case for app connectors, for instance).

If so, we set all Routes as MatchDomains. This enables a split DNS configuration which will help preserve battery life. Effectively, for the average Tailscale user who only relies on MagicDNS to resolve *.ts.net domains, this means that Tailscale DNS will only be used for those domains.

This PR doesn't affect users with Override Local DNS enabled. For these users, there should be no difference and Tailscale will continue acting as a global DNS resolver.

Signed-off-by: Andrea Gottardo <andrea@tailscale.com>
2 years ago
..
art all: use Go 1.22 range-over-int 2 years ago
connstats all: use Go 1.22 range-over-int 2 years ago
dns xcode/iOS: set MatchDomains when no route requires a custom DNS resolver (#10576) 2 years ago
dnscache net/netns, net/dns/resolver, etc: make netmon required in most places 2 years ago
dnsfallback tsd, ipnlocal, etc: add tsd.System.HealthTracker, start some plumbing 2 years ago
flowtrack all: update copyright and license headers 3 years ago
ktimeout net/ktimeout: add a package to set TCP user timeout 2 years ago
memnet net/memnet: export the network name (#9111) 2 years ago
netaddr all: update copyright and license headers 3 years ago
netcheck net/netcheck: apply some polish suggested from #12161 2 years ago
neterror net/neterror, wgengine/magicsock: use UDP GSO and GRO on Linux (#7791) 3 years ago
netkernelconf client/tailscale,ipn/{ipnlocal,localapi}: check UDP GRO config (#10071) 2 years ago
netknob all: update copyright and license headers 3 years ago
netmon net/netmon: remove spammy log statements (#11953) 2 years ago
netns net/{interfaces,netmon}, all: merge net/interfaces package into net/netmon 2 years ago
netstat net/{netns,netstat}: use new x/sys/cpu.IsBigEndian 3 years ago
netutil net/netmon, add: add netmon.State type alias of interfaces.State 2 years ago
packet all: use Go 1.22 range-over-int 2 years ago
ping net/ping: fix ICMP echo code field to 0 2 years ago
portmapper net/portmapper: add envknob to disable portmapper in localhost integration tests 2 years ago
proxymux all: cleanup unused code, part 1 (#10661) 2 years ago
routetable net/{interfaces,netmon}, all: merge net/interfaces package into net/netmon 2 years ago
socks5 net/socks5: add password auth support 3 years ago
sockstats net/{interfaces,netmon}, all: merge net/interfaces package into net/netmon 2 years ago
speedtest all: update copyright and license headers 3 years ago
stun all: make more tests pass/skip in airplane mode 2 years ago
stunserver all: use Go 1.22 range-over-int 2 years ago
tcpinfo all: use Go 1.22 range-over-int 2 years ago
tlsdial tsd, ipnlocal, etc: add tsd.System.HealthTracker, start some plumbing 2 years ago
tsaddr types/views: remove duplicate SliceContainsFunc 2 years ago
tsdial ipn/ipnlocal, net/tsdial: plumb routes into tsdial and use them in UserDial 2 years ago
tshttpproxy all: use Go 1.22 range-over-int 2 years ago
tstun net/tstun: do SNAT after filterPacketOutboundToWireGuard 2 years ago
wsconn net/wsconn: accept a remote addr string and plumb it through 2 years ago