mirrors/tailscale
1
0
Fork 0
Code Issues Pull Requests Projects Wiki Activity

net/dnscache: add overly simplistic DNS cache package for selective use

Browse Source 
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)
This commit is contained in:
Brad Fitzpatrick
2020-03-05 10:29:19 -08:00
parent a36ccb8525
commit 2cff9016e4
5 changed files with 191 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
netcheck/netcheck.go
View File

@ -17,6 +17,7 @@ import (
"golang.org/x/sync/errgroup"
"tailscale.com/interfaces"
"tailscale.com/net/dnscache"
"tailscale.com/stun"
"tailscale.com/stunner"
"tailscale.com/types/logger"
@ -181,6 +182,7 @@ func GetReport(ctx context.Context, logf logger.Logf) (*Report, error) {
Endpoint: add,
Servers: stunServers,
Logf: logf,
DNSCache: dnscache.Get(),
}
grp.Go(func() error { return s4.Run(ctx) })
go reader(s4, pc4, unlimited)
@ -190,6 +192,7 @@ func GetReport(ctx context.Context, logf logger.Logf) (*Report, error) {
Endpoint: addHair,
Servers: stunServers,
Logf: logf,
DNSCache: dnscache.Get(),
}
grp.Go(func() error { return s4Hair.Run(ctx) })
go reader(s4Hair, pc4Hair, 2)
@ -201,6 +204,7 @@ func GetReport(ctx context.Context, logf logger.Logf) (*Report, error) {
Servers: stunServers6,
Logf: logf,
OnlyIPv6: true,
DNSCache: dnscache.Get(),
}
grp.Go(func() error { return s6.Run(ctx) })
go reader(s6, pc6, unlimited)