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Andrew Dunham 80b138f0df wgengine/magicsock: keep advertising endpoints after we stop discovering them
Previously, when updating endpoints we would immediately stop
advertising any endpoint that wasn't discovered during
determineEndpoints. This could result in, for example, a case where we
performed an incremental netcheck, didn't get any of our three STUN
packets back, and then dropped our STUN endpoint from the set of
advertised endpoints... which would result in clients falling back to a
DERP connection until the next call to determineEndpoints.

Instead, let's cache endpoints that we've discovered and continue
reporting them to clients until a timeout expires. In the above case
where we temporarily don't have a discovered STUN endpoint, we would
continue reporting the old value, then re-discover the STUN endpoint
again and continue reporting it as normal, so clients never see a
withdrawal.

Updates tailscale/coral#108

Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I42de72e7418ab328a6c732bdefc74549708cf8b9
2023-04-17 11:26:02 -04:00
.bencher bencher: add config to suppress failures on benchmark regressions. 2021-10-01 16:16:02 -07:00
.github .github/workflows: add artifact caching and remove double build on race 2023-04-14 22:07:06 -07:00
atomicfile atomicfile: use /tmp for socket path on macOS 2023-04-04 09:14:37 -07:00
chirp all: update copyright and license headers 2023-01-27 15:36:29 -08:00
client/tailscale client/tailscale: dial LocalAPI at 127.0.0.1 on macOS 2023-04-12 14:09:24 -07:00
cmd net/netcheck: use dnscache.Resolver when resolving DERP IPs 2023-04-14 13:14:29 -04:00
control net/sockstats: pass in logger to sockstats.WithSockStats 2023-04-12 18:40:03 -07:00
derp net/sockstats: pass in logger to sockstats.WithSockStats 2023-04-12 18:40:03 -07:00
disco all: update to Go 1.20, use strings.CutPrefix/Suffix instead of our fork 2023-02-01 15:23:54 -08:00
docs all: update copyright and license headers 2023-01-27 15:36:29 -08:00
doctor doctor/permissions: add new check to print process permissions 2023-03-29 11:50:23 -04:00
envknob envknob,net/tstun,wgengine: use TS_DEBUG_MTU consistently 2023-03-30 14:26:10 -07:00
health health, net/tlsdial: add healthcheck for self-signed cert 2023-02-01 23:17:41 -05:00
hostinfo tailcfg,hostinfo: add App field to identify tsnet uses 2023-02-27 15:19:33 -08:00
internal/tooldeps all: update copyright and license headers 2023-01-27 15:36:29 -08:00
ipn .github/workflows: reenable Windows CI, disable broken tests 2023-04-14 14:13:53 -07:00
jsondb all: update copyright and license headers 2023-01-27 15:36:29 -08:00
kube ipn/store: add support for stores to hook into a custom dialer 2023-03-29 16:35:46 -07:00
licenses licenses: update tailscale{,d} licenses 2023-04-11 09:06:08 -07:00
log log/sockstatlog: limit sockstat logs to 5 MB 2023-04-12 15:32:01 -07:00
logpolicy logpolicy: do not upload logs in tests 2023-03-24 13:13:36 -07:00
logtail net/sockstats: pass in logger to sockstats.WithSockStats 2023-04-12 18:40:03 -07:00
metrics metrics: add SetInt64 to ease using LabelMap for gauge metrics 2023-02-18 17:43:43 +00:00
net wgengine/magicsock, types/nettype, etc: finish ReadFromUDPAddrPort netip migration 2023-04-15 13:40:15 -07:00
packages/deb all: update copyright and license headers 2023-01-27 15:36:29 -08:00
paths all: update copyright and license headers 2023-01-27 15:36:29 -08:00
portlist all: update copyright and license headers 2023-01-27 15:36:29 -08:00
prober prober: migrate to Prometheus metric library 2023-04-11 08:37:32 +01:00
release release/dist/cli: add --verbose to print subcommand output 2023-03-01 17:16:31 -08:00
safesocket .github/workflows: reenable Windows CI, disable broken tests 2023-04-14 14:13:53 -07:00
scripts scripts/installer.sh: check Photon OS version with pkg server. 2023-03-25 18:08:20 -07:00
smallzstd all: update copyright and license headers 2023-01-27 15:36:29 -08:00
ssh/tailssh ssh/tailssh: handle output matching better in tests (#7799) 2023-04-05 11:35:02 -04:00
syncs .github/workflows: reenable Windows CI, disable broken tests 2023-04-14 14:13:53 -07:00
tailcfg tailcfg: make SelfNodeV4MasqAddrForThisPeer a pointer 2023-04-13 11:28:33 -07:00
tempfork net/tstun/table: add initial RoutingTable implementation 2023-03-29 12:30:18 -07:00
tka tka: compact TKA storage on startup 2023-03-03 10:09:26 -10:00
tool tool/gocross: add ts_macext build tag for Xcode builds 2023-04-11 11:27:26 -07:00
tsconst all: update copyright and license headers 2023-01-27 15:36:29 -08:00
tsnet tsnet: disable TestLoopbackSOCKS5 on Windows 2023-04-14 22:28:04 -07:00
tstest wgengine/magicsock, types/nettype, etc: finish ReadFromUDPAddrPort netip migration 2023-04-15 13:40:15 -07:00
tstime tstime/rate: add Value (#7491) 2023-03-09 11:13:09 -08:00
tsweb tsweb: move varz handler(s) into separate modules 2023-04-11 08:37:32 +01:00
types wgengine/magicsock, types/nettype, etc: finish ReadFromUDPAddrPort netip migration 2023-04-15 13:40:15 -07:00
util util/set: move Slice type from corp to oss 2023-04-14 19:25:39 -04:00
version version/mkversion: don't break on tagged go.mod entries 2023-03-14 14:25:18 -07:00
wf all: update copyright and license headers 2023-01-27 15:36:29 -08:00
wgengine wgengine/magicsock: keep advertising endpoints after we stop discovering them 2023-04-17 11:26:02 -04:00
words words: what?! a llama?! he's supposed to be dead! (#7623) 2023-03-21 13:03:20 -04:00
.gitattributes .: add .gitattributes entry to use Go hunk-header driver 2021-12-03 17:56:02 -08:00
.gitignore release: open-source release build logic for unix packages 2023-02-24 21:31:09 +00:00
ALPINE.txt Docker: add ALPINE.txt to manage alpine versions 2022-06-29 11:47:09 -07:00
api.md api.md: update example auth key value 2023-04-14 11:35:33 -07:00
AUTHORS Move Linux client & common packages into a public repo. 2020-02-09 09:32:57 -08:00
build_dist.sh build_dist.sh: make cross-compilation friendly 2023-03-16 22:01:05 -07:00
build_docker.sh Dockerfile: fix docker build 2023-02-14 00:59:09 +00:00
CODE_OF_CONDUCT.md Add a code of conduct. 2020-02-10 22:16:30 -08:00
Dockerfile Dockerfile: fix docker build 2023-02-14 00:59:09 +00:00
Dockerfile.base all: update copyright and license headers 2023-01-27 15:36:29 -08:00
flake.lock nix: update nixpkgs flake, override go_1_20 for tailscale_go (#7139) 2023-02-01 12:27:04 -05:00
flake.nix go.mod.sri: update SRI hash for go.mod changes 2023-04-11 08:54:53 -07:00
go.mod tsweb: expose native Prometheus metrics in /debug/varz 2023-04-11 08:37:32 +01:00
go.mod.sri go.mod.sri: update SRI hash for go.mod changes 2023-04-11 08:54:53 -07:00
go.sum tsweb: expose native Prometheus metrics in /debug/varz 2023-04-11 08:37:32 +01:00
go.toolchain.branch go.toolchain.branch: update to Go 1.20 2023-02-01 15:14:05 -08:00
go.toolchain.rev go.toolchain.rev: update for go 1.20.3 2023-04-04 11:44:02 -07:00
LICENSE all: update tools that manage copyright headers 2023-01-27 15:36:29 -08:00
Makefile Makefile: add help text to Makefile 2023-02-16 22:39:09 +00:00
PATENTS Move Linux client & common packages into a public repo. 2020-02-09 09:32:57 -08:00
pull-toolchain.sh pull-toolchain.sh: don't run update-flake.sh 2023-02-09 15:04:01 -08:00
README.md all: update to Go 1.20, use strings.CutPrefix/Suffix instead of our fork 2023-02-01 15:23:54 -08:00
SECURITY.md Add a SECURITY.md for vulnerability reports. 2020-02-11 10:26:41 -08:00
shell.nix go.mod.sri: update SRI hash for go.mod changes 2023-04-11 08:54:53 -07:00
staticcheck.conf staticcheck.conf: remove unnecessary warning 2021-06-22 12:26:13 -07:00
update-flake.sh .github/workflows: add workflow to update go.mod Nix SRI hash 2023-02-14 03:28:43 +00:00
version_test.go all: update copyright and license headers 2023-01-27 15:36:29 -08:00
version-embed.go version: return correct Meta.MajorMinorPatch in non-dev builds 2023-02-10 13:00:44 -08:00
VERSION.txt VERSION.txt: this is 1.39 2023-03-14 13:50:57 -07:00

Tailscale

https://tailscale.com

Private WireGuard® networks made easy

Overview

This repository contains the majority of Tailscale's open source code. Notably, it includes the tailscaled daemon and the tailscale CLI tool. The tailscaled daemon runs on Linux, Windows, macOS, and to varying degrees on FreeBSD and OpenBSD. The Tailscale iOS and Android apps use this repo's code, but this repo doesn't contain the mobile GUI code.

Other Tailscale repos of note:

For background on which parts of Tailscale are open source and why, see https://tailscale.com/opensource/.

Using

We serve packages for a variety of distros and platforms at https://pkgs.tailscale.com.

Other clients

The macOS, iOS, and Windows clients use the code in this repository but additionally include small GUI wrappers. The GUI wrappers on non-open source platforms are themselves not open source.

Building

We always require the latest Go release, currently Go 1.20. (While we build releases with our Go fork, its use is not required.)

go install tailscale.com/cmd/tailscale{,d}

If you're packaging Tailscale for distribution, use build_dist.sh instead, to burn commit IDs and version info into the binaries:

./build_dist.sh tailscale.com/cmd/tailscale
./build_dist.sh tailscale.com/cmd/tailscaled

If your distro has conventions that preclude the use of build_dist.sh, please do the equivalent of what it does in your distro's way, so that bug reports contain useful version information.

Bugs

Please file any issues about this code or the hosted service on the issue tracker.

Contributing

PRs welcome! But please file bugs. Commit messages should reference bugs.

We require Developer Certificate of Origin Signed-off-by lines in commits.

See git log for our commit message style. It's basically the same as Go's style.

About Us

Tailscale is primarily developed by the people at https://github.com/orgs/tailscale/people. For other contributors, see:

WireGuard is a registered trademark of Jason A. Donenfeld.