Dmytro Shynkevych
cb5f3c0819
tsdns: log when settings upstreams.
...
It turns out that otherwise we don't know what exactly was set.
Also remove the now unused RootDomain config option.
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
2020-08-27 17:01:59 -04:00
Dmytro Shynkevych
aa1da24f18
tsdns: remove now unused fields.
...
Missed in 7541982635
2020-08-27 03:21:36 -04:00
Dmytro Shynkevych
7541982635
tsdns: remove forwarding queue.
...
Two levels of queueing are unnecessary.
The resulting implementation performs as follows
under request bursts (`count` packets sent concurrently):
lost count avg latency
0 / 256 (00.00%) - 28ms
0 / 512 (00.00%) - 146ms
0 / 768 (00.00%) - 166ms
0 / 1024 (00.00%) - 416ms
11 / 1280 (00.86%) - 430ms
145 / 1536 (09.44%) - 715ms
364 / 2048 (17.77%) - 836ms
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
2020-08-27 03:18:17 -04:00
Dmytro Shynkevych
34a7e7c12b
tsdns: be more strict with type validation.
...
Previously, a type AAAA query would be answered with an A record
if only an IPv4 address was available. This is irrelevant for us
while we only use IPv4, but it will be a bug one day,
so it's worth being precise about semantics.
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
2020-08-27 00:45:30 -04:00
Dmytro Shynkevych
bc34788e65
tsdns: fix accidental rejection of all non-{A, AAAA} questions.
...
This is a bug introduced in a903d6c2ed
2020-08-27 00:42:56 -04:00
Dmytro Shynkevych
a903d6c2ed
tailcfg, tsdns: derive root domains from list of nodes ( #708 )
...
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
2020-08-24 17:27:21 -04:00
Dmytro Shynkevych
6c71e5b851
tsdns: copy name when loewrcasing.
...
The previous approach modifies name in-place in the request slice to avoid an allocation.
This is incorrect: the question section of a DNS request
must be copied verbatim, without any such modification.
Software may rely on it (we rely on other resolvers doing it it in tsdns/forwarder).
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
2020-08-20 19:02:23 -04:00
Dmytro Shynkevych
1886dfdca3
tsdns: lowercase the name in parseQuery.
...
Domains in DNS should be case-insensitive.
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
2020-08-20 18:05:40 -04:00
Dmytro Shynkevych
1af70e2468
tsdns: delegate requests asynchronously ( #687 )
...
Signed-Off-By: Dmytro Shynkevych <dmytro@tailscale.com>
2020-08-19 15:39:25 -04:00
Dmytro Shynkevych
78c2e1ff83
tsdns: implement reverse DNS lookups, canonicalize names everywhere. ( #640 )
...
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
2020-08-06 14:25:28 -04:00
Dmytro Shynkevych
28e52a0492
all: dns refactor, add Proxied and PerDomain flags from control ( #615 )
...
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
2020-07-31 16:27:09 -04:00
Dmytro Shynkevych
c7582dc234
ipn: fix netmap change tracking and dns map generation ( #609 )
...
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
2020-07-28 21:47:23 -04:00
Dmytro Shynkevych
3b36400e35
tsdns: response to type ANY queries
...
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
2020-07-14 18:50:07 -04:00
Dmytro Shynkevych
21d1dbfce0
wgengine/tsdns: local DNS server for testing
...
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
2020-07-10 14:56:59 -04:00
Dmytro Shynkevych
248d28671b
tsdns: fix race in delegate
...
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
2020-07-08 20:07:14 -04:00
Dmytro Shynkevych
67ebba90e1
tsdns: dual resolution mode, IPv6 support ( #526 )
...
This change adds to tsdns the ability to delegate lookups to upstream nameservers.
This is crucial for setting Magic DNS as the system resolver.
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
2020-07-07 15:25:32 -04:00
Dmytro Shynkevych
07e02ec9d3
wgengine/tsdns: add test and prevent useless updates ( #449 )
...
Signed-Off-By: Dmytro Shynkevych <dmytro@tailscale.com>
2020-06-09 13:09:43 -04:00
Dmytro Shynkevych
511840b1f6
tsdns: initial implementation of a Tailscale DNS resolver ( #396 )
...
Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>
2020-06-08 18:19:26 -04:00
