tailscale

Commit Graph

Author	SHA1	Message	Date
Brad Fitzpatrick	6ee219a25d	ipn, wgengine, magicsock, tsdns: be quieter and less aggressive when offline If no interfaces are up, calm down and stop spamming so much. It was noticed as especially bad on Windows, but probably was bad everywhere. I just have the best network conditions testing on a Windows VM. Updates #604	4 years ago
Josh Bleecher Snyder	f0ef561049	wgengine/tsdns: use netns to obtain a socket Fixes #789 Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	6e8328cba5	wgengine/tsdns: replace connections when net link changes (macOS) When the network link changes, existing UDP sockets fail immediately and permanently on macOS. The forwarder set up a single UDP conn and never changed it. As a result, any time there was a network link change, all forwarded DNS queries failed. To fix this, create a new connection when send requests fail because of network unreachability. This change is darwin-only, although extended it to other platforms should be straightforward. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
Josh Bleecher Snyder	1fd10061fd	wgengine/tsdns: delegate bonjour service rdns requests While we're here, parseQuery into a plain function. This is helpful for fuzzing. (Which I did a bit of. Didn't find anything.) And clean up a few minor things. Signed-off-by: Josh Bleecher Snyder <josh@tailscale.com>	4 years ago
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>	4 years ago
Dmytro Shynkevych	aa1da24f18	tsdns: remove now unused fields. Missed in `7541982635`. Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>	4 years ago
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>	4 years ago
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>	4 years ago
Dmytro Shynkevych	bc34788e65	tsdns: fix accidental rejection of all non-{A, AAAA} questions. This is a bug introduced in `a903d6c2ed`. Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>	4 years ago
Dmytro Shynkevych	a903d6c2ed	tailcfg, tsdns: derive root domains from list of nodes (#708 ) Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>	4 years ago
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>	4 years ago
Dmytro Shynkevych	1886dfdca3	tsdns: lowercase the name in parseQuery. Domains in DNS should be case-insensitive. Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>	4 years ago
Dmytro Shynkevych	1af70e2468	tsdns: delegate requests asynchronously (#687 ) Signed-Off-By: Dmytro Shynkevych <dmytro@tailscale.com>	4 years ago
Dmytro Shynkevych	78c2e1ff83	tsdns: implement reverse DNS lookups, canonicalize names everywhere. (#640 ) Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>	4 years ago
Dmytro Shynkevych	28e52a0492	all: dns refactor, add Proxied and PerDomain flags from control (#615 ) Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>	4 years ago
Dmytro Shynkevych	c7582dc234	ipn: fix netmap change tracking and dns map generation (#609 ) Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>	4 years ago
Dmytro Shynkevych	3b36400e35	tsdns: response to type ANY queries Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>	4 years ago
Dmytro Shynkevych	21d1dbfce0	wgengine/tsdns: local DNS server for testing Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>	4 years ago
Dmytro Shynkevych	248d28671b	tsdns: fix race in delegate Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>	4 years ago
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>	4 years ago
Dmytro Shynkevych	07e02ec9d3	wgengine/tsdns: add test and prevent useless updates (#449 ) Signed-Off-By: Dmytro Shynkevych <dmytro@tailscale.com>	4 years ago
Dmytro Shynkevych	511840b1f6	tsdns: initial implementation of a Tailscale DNS resolver (#396 ) Signed-off-by: Dmytro Shynkevych <dmytro@tailscale.com>	4 years ago

22 Commits (cd6099113fa037ed43a71ce764506f608d6007c5)