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Adrian Dewhurst 3bf2bddbb5 ipn/ipnlocal: improve testability of random node selection In order to test the sticky last suggestion code, a test was written for LocalBackend.SuggestExitNode but it contains a random number generator which makes writing comprehensive tests very difficult. This doesn't change how the last suggestion works, but it adds some infrastructure to make that easier in a later PR. This adds func parameters for the two randomized parts: breaking ties between DERP regions and breaking ties between nodes. This way tests can validate the entire list of tied options, rather than expecting a particular outcome given a particular random seed. As a result of this, the global random number generator can be used rather than seeding a local one each time. In order to see the tied nodes for the location based (i.e. Mullvad) case, pickWeighted needed to return a slice instead of a single arbitrary option, so there is a small change in how that works. Updates tailscale/corp#19681 Change-Id: I83c48a752abdec0f59c58ccfd8bfb3f3f17d0ea8 Signed-off-by: Adrian Dewhurst <adrian@tailscale.com>		3 weeks ago
.bencher	bencher: add config to suppress failures on benchmark regressions.	3 years ago
.github	scripts/installer.sh: remove unnecessary escaping in grep (#11950 )	2 months ago
appc	appc: log how often routeInfo is stored	3 weeks ago
atomicfile	various: add golangci-lint, fix issues (#7905 )	1 year ago
chirp	all: update copyright and license headers	1 year ago
client	tsnet,wgengine/netstack: add ListenPacket and tests	4 weeks ago
clientupdate	clientupdate: mention when Alpine system upgrade is needed (#12306 )	4 weeks ago
cmd	cmd/stunstamp: implement service to measure DERP STUN RTT (#12241 )	3 weeks ago
control	ipn/ipnlocal: discard node keys that have been rotated out	3 weeks ago
derp	derp: add some guardrails for derpReason metrics getting out of sync	4 weeks ago
disco	disco: correct noun for nacl box type in disco docs	7 months ago
docs	docs/k8s: fix subnet router manifests (#12305 )	4 weeks ago
doctor	net/{interfaces,netmon}, all: merge net/interfaces package into net/netmon	2 months ago
drive	drive: rewrite LOCK paths	1 month ago
envknob	envknob: ensure f is not nil before using it	3 months ago
health	health, ipn/ipnlocal: move more health warning code into health.Tracker	2 months ago
hostinfo	hostinfo: use Distro field for distinguishing Windows Server builds	2 months ago
internal/tooldeps	various: add golangci-lint, fix issues (#7905 )	1 year ago
ipn	ipn/ipnlocal: improve testability of random node selection	3 weeks ago
jsondb	all: update copyright and license headers	1 year ago
k8s-operator	cmd/k8s-operator,cmd/containerboot,ipn,k8s-operator: turn off stateful filter for egress proxies. (#12075 )	2 months ago
kube	cmd/containerboot,kube,ipn/store/kubestore: allow interactive login on kube, check Secret create perms, allow empty state Secret (#11326 )	2 months ago
licenses	licenses: update license notices	3 weeks ago
log	net/netns, net/dns/resolver, etc: make netmon required in most places	2 months ago
logpolicy	net/netns, net/dns/resolver, etc: make netmon required in most places	2 months ago
logtail	logtail/backoff: update Backoff.BackOff docs (#12229 )	1 month ago
metrics	all: use Go 1.22 range-over-int	2 months ago
net	net/dns: fix typo in OSConfig logging (#12330 )	3 weeks ago
omit	cmd/tailscaled, ipn/conffile: support ec2 user-data config file	4 weeks ago
packages/deb	go.mod: upgrade nfpm to v2 (#8786 )	11 months ago
paths	all: use Go 1.22 range-over-int	2 months ago
portlist	all: use Go 1.22 range-over-int	2 months ago
posture	cmd/tailscaled, net/tstun: build for aix/ppc64	3 months ago
prober	prober: plumb a now-required netmon to derphttp	1 month ago
proxymap	wgengine, proxymap: split out port mapping from Engine to new type	9 months ago
publicapi	api.md: direct TOC links to new publicapi docs location	1 month ago
release	release/dist/qnap: omit .qpkg.codesigning files	2 months ago
safesocket	all: use Go 1.22 range-over-int	2 months ago
safeweb	safeweb: handle mux pattern collisions more generally (#11801 )	2 months ago
scripts	scripts/installer.sh: remove unnecessary escaping in grep (#11950 )	2 months ago
smallzstd	all: use Go 1.22 range-over-int	2 months ago
ssh/tailssh	ssh/tailssh: fall back to using su when no TTY available on Linux	4 weeks ago
syncs	syncs: fix AtomicValue for interface kinds (#11943 )	2 months ago
tailcfg	tailcfg: use strings.CutPrefix for CheckTag; add test	4 weeks ago
taildrop	all: use new AppendEncode methods available in Go 1.22 (#11079 )	5 months ago
tempfork	cmd/tailscale: add shell tab-completion	2 months ago
tka	ipn/ipnlocal: discard node keys that have been rotated out	3 weeks ago
tool	tool/gocross: add debug data to CGO builds	1 month ago
tsconst	all: update copyright and license headers	1 year ago
tsd	health, all: remove health.Global, finish plumbing health.Tracker	2 months ago
tsnet	tsnet,wgengine/netstack: add ListenPacket and tests	4 weeks ago
tstest	all: do not depend on the testing package	1 month ago
tstime	all: use Go 1.22 range-over-int	2 months ago
tsweb	tsweb: rename AccessLogRecord's When to Time	4 weeks ago
types	ipn,wgengine: remove vestigial Prefs.AllowSingleHosts	1 month ago
util	util/linuxfw: don't try cleaning iptables on gokrazy	4 weeks ago
version	version: add GitCommitTime to Meta	1 month ago
wf	go.mod, all: move away from inet.af domain seized by Taliban	4 months ago
wgengine	tsnet,wgengine/netstack: add ListenPacket and tests	4 weeks ago
words	words: add some fruit with scales (#8460 )	2 months ago
.gitattributes	.: add .gitattributes entry to use Go hunk-header driver	3 years ago
.gitignore	ssh/tailssh: add integration test	2 months ago
.golangci.yml	ci: run 'go vet' in golangci-lint; fix errors in tests	7 months ago
ALPINE.txt	ALPINE.txt,Dockerfile{.base},build_docker.sh: bump alpine (#10543 )	7 months ago
AUTHORS	Move Linux client & common packages into a public repo.	4 years ago
CODEOWNERS	CODEOWNERS: add the start of an owners file	11 months ago
CODE_OF_CONDUCT.md	Add a code of conduct.	4 years ago
Dockerfile	Dockerfile: use Go 1.22	5 months ago
Dockerfile.base	ALPINE.txt,Dockerfile{.base},build_docker.sh: bump alpine (#10543 )	7 months ago
LICENSE	all: update tools that manage copyright headers	1 year ago
Makefile	ssh/tailssh: fall back to using su when no TTY available on Linux	4 weeks ago
PATENTS	Move Linux client & common packages into a public repo.	4 years ago
README.md	go.mod, README.md: use Go 1.22	5 months ago
SECURITY.md	Add a SECURITY.md for vulnerability reports.	4 years ago
VERSION.txt	VERSION.txt: this is v1.67.0 (#12063 )	2 months ago
api.md	api.md: direct TOC links to new publicapi docs location	1 month ago
build_dist.sh	cmd/tailscale: add shell tab-completion	2 months ago
build_docker.sh	cmd/{k8s-nameserver,k8s-operator},k8s-operator: add a kube nameserver, make operator deploy it (#11919 )	2 months ago
flake.lock	flake.nix: build tailscale with go 1.22	5 months ago
flake.nix	go.mod.sri: update SRI hash for go.mod changes	2 months ago
go.mod	cmd/stunstamp: implement service to measure DERP STUN RTT (#12241 )	3 weeks ago
go.mod.sri	go.mod.sri: update SRI hash for go.mod changes	2 months ago
go.sum	cmd/stunstamp: implement service to measure DERP STUN RTT (#12241 )	3 weeks ago
go.toolchain.branch	go.toolchain.rev: bump to Go 1.22.0 (#11055 )	5 months ago
go.toolchain.rev	go.toolchain.rev: update to Go 1.22.3	2 months ago
gomod_test.go	go.mod: add test that replace directives aren't added in oss	9 months ago
header.txt	cmd/k8s-operator: operator can create subnetrouter (#9505 )	7 months ago
pull-toolchain.sh	pull-toolchain.sh: don't run update-flake.sh	1 year ago
shell.nix	go.mod.sri: update SRI hash for go.mod changes	2 months ago
staticcheck.conf	all: cleanup unused code, part 2 (#10670 )	6 months ago
update-flake.sh	Code Improvements (#11311 )	4 months ago
version-embed.go	version: return correct Meta.MajorMinorPatch in non-dev builds	1 year ago
version_test.go	go.mod,wgengine/netstack: bump gvisor	5 months ago

README.md

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:

the Android app is at https://github.com/tailscale/tailscale-android
the Synology package is at https://github.com/tailscale/tailscale-synology
the QNAP package is at https://github.com/tailscale/tailscale-qpkg
the Chocolatey packaging is at https://github.com/tailscale/tailscale-chocolatey

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 1.22. (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:

Legal

WireGuard is a registered trademark of Jason A. Donenfeld.