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tailscale/net/dns/resolver
Brad Fitzpatrick c37af58ea4 net/tsdial: move more weirdo dialing into new tsdial package, plumb
Not done yet, but this move more of the outbound dial special casing
from random packages into tsdial, which aspires to be the one unified
place for all outbound dialing shenanigans.

Then this plumbs it all around, so everybody is ultimately
holding on to the same dialer.

As of this commit, macOS/iOS using an exit node should be able to
reach to the exit node's DoH DNS proxy over peerapi, doing the sockopt
to stay within the Network Extension.

A number of steps remain, including but limited to:

* move a bunch more random dialing stuff

* make netstack-mode tailscaled be able to use exit node's DNS proxy,
  teaching tsdial's resolver to use it when an exit node is in use.

Updates #1713

Change-Id: I1e8ee378f125421c2b816f47bc2c6d913ddcd2f5
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
3 years ago
..
doh_test.go net/dns: replace resolver IPs with type for DoH 3 years ago
forwarder.go net/tsdial: move more weirdo dialing into new tsdial package, plumb 3 years ago
forwarder_test.go net/dns/resolver: set maxDoHInFlight to 1000 on iOS 15+. 3 years ago
macios_ext.go all: simplify ts_macext build tags 3 years ago
neterr_darwin.go net/dns/resolver: permit larger max responses, signal truncation 3 years ago
neterr_other.go all: gofmt with Go 1.17 3 years ago
neterr_windows.go net/dns/resolver: permit larger max responses, signal truncation 3 years ago
tsdns.go net/tsdial: move more weirdo dialing into new tsdial package, plumb 3 years ago
tsdns_server_test.go all: fix spelling mistakes 3 years ago
tsdns_test.go net/tsdial: move more weirdo dialing into new tsdial package, plumb 3 years ago