tailscale/net/dns/resolver
Andrew Dunham 530aaa52f1 net/dns: retry forwarder requests over TCP
We weren't correctly retrying truncated requests to an upstream DNS
server with TCP. Instead, we'd return a truncated request to the user,
even if the user was querying us over TCP and thus able to handle a
large response.

Also, add an envknob and controlknob to allow users/us to disable this
behaviour if it turns out to be buggy ( DNS ).

Updates #9264

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: Ifb04b563839a9614c0ba03e9c564e8924c1a2bfd
2023-09-25 16:42:07 -04:00
..
debug.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
doh_test.go net/dns/resolver: remove maxDoHInFlight 2023-02-03 17:07:12 -08:00
forwarder_test.go net/dns: retry forwarder requests over TCP 2023-09-25 16:42:07 -04:00
forwarder.go net/dns: retry forwarder requests over TCP 2023-09-25 16:42:07 -04:00
macios_ext.go all: avoid repeated default interface lookups 2023-04-20 15:46:01 -07:00
tsdns_server_test.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
tsdns_test.go net/dns: retry forwarder requests over TCP 2023-09-25 16:42:07 -04:00
tsdns.go net/dns: retry forwarder requests over TCP 2023-09-25 16:42:07 -04:00