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3 Commits

Author SHA1 Message Date
Andrew Dunham f52a659076
net/dnsfallback: allow setting log function (#5550) 
This broke a test in corp that enforces we don't use the log package.

Signed-off-by: Andrew Dunham <andrew@tailscale.com>
 2022-09-06 11:19:50 -04:00
Andrew Dunham b8596f2a2f
net/dnsfallback: cache most recent DERP map on disk (#5545) 
This is especially helpful as we launch newer DERPs over time, and older
clients have progressively out-of-date static DERP maps baked in. After
this, as long as the client has successfully connected once, it'll cache
the most recent DERP map it knows about.

Resolves an in-code comment from @bradfitz

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
 2022-09-05 14:36:30 -04:00
Brad Fitzpatrick 10d7c2583c net/dnsfallback: don't depend on derpmap.Prod 
Move derpmap.Prod to a static JSON file (go:generate'd) instead,
to make its role explicit. And add a TODO about making dnsfallback
use an update-over-time DERP map file instead of a baked-in one.

Updates #1264

Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
 2021-06-27 22:07:40 -07:00