tailscale/control
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
..
controlbase various: add golangci-lint, fix issues (#7905) 2023-04-17 18:38:24 -04:00
controlclient wgengine/magicsock, controlclient, net/dns: reduce some logspam 2023-09-23 11:52:47 -07:00
controlhttp net/wsconn: accept a remote addr string and plumb it through 2023-08-29 16:57:16 -07:00
controlknobs net/dns: retry forwarder requests over TCP 2023-09-25 16:42:07 -04:00