66be052a70
net/dnscache: work on IPv6-only hosts (again)
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This fixes the regression where we had stopped working on IPv6-only
hosts.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2021-01-06 19:53:13 -08:00
a2d78b4d3e
net/dnscache, control/controlclient: use DNS cache when dialing control
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Cache DNS results of earlier login.tailscale.com control dials, and use
them for future dials if DNS is slow or broken.
Fixes various issues with trickier setups with the domain's DNS server
behind a subnet router.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2020-11-11 12:50:04 -08:00
19b0cfe89e
all: prepare for GOOS=ios in Go 1.16
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Work with either way for now on iOS (darwin/arm64 vs ios/arm64).
In February when Go 1.16 comes out we'll have a universal binary for
darwin/arm64 (macOS) and will drop support for Go 1.15 and its
darwin/amd64 meaning iOS. (it'll mean macOS).
Context:
* https://tip.golang.org/doc/go1.16#darwin
* https://github.com/golang/go/issues/38485
* https://github.com/golang/go/issues/42100
2020-11-11 09:17:04 -08:00
657f331e8b
net/dnscache: remove unnecessary lint warning.
2020-04-30 20:31:44 -07:00
ad0795efc2
net/dnscache: don't use the Go resolver on Android
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The local resolver is not available for apps on Android.
Signed-off-by: Elias Naur <mail@eliasnaur.com>
2020-04-27 12:04:39 -07:00
bd0e20f351
net/dnscache: ignore annoying staticcheck check
2020-03-09 22:12:22 -07:00
d44325295e
net/dnscache: initialize the single Resolver more directly
2020-03-09 21:05:01 -07:00
cac68fe102
net/dnscache: do not PreferGo on macOS/iOS
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With this commit my iPhone can now DERP.
2020-03-09 14:20:09 -04:00
8f0fd01efd
net/dnscache: add copyright header to test
2020-03-09 11:07:31 -07:00
5a1ce4adae
net/dnscache: parse passed CIDR
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Signed-off-by: David Crawshaw <crawshaw@tailscale.com>
2020-03-09 13:11:35 -04:00
2cff9016e4
net/dnscache: add overly simplistic DNS cache package for selective use
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I started to write a full DNS caching resolver and I realized it was
overkill and wouldn't work on Windows even in Go 1.14 yet, so I'm
doing this tiny one instead for now, just for all our netcheck STUN
derp lookups, and connections to DERP servers. (This will be caching a
exactly 8 DNS entries, all ours.)
Fixes #145 (can be better later, of course)
2020-03-05 12:23:37 -08:00
Brad Fitzpatrick
David Anderson
Elias Naur
David Crawshaw