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Joe Tsai 2e5d08ec4f net/connstats: invert network logging data flow (#6272 ) Previously, tstun.Wrapper and magicsock.Conn managed their own statistics data structure and relied on an external call to Extract to extract (and reset) the statistics. This makes it difficult to ensure a maximum size on the statistics as the caller has no introspection into whether the number of unique connections is getting too large. Invert the control flow such that a connstats.Statistics is registered with tstun.Wrapper and magicsock.Conn. Methods on non-nil connstats.Statistics are called for every packet. This allows the implementation of connstats.Statistics (in the future) to better control when it needs to flush to ensure bounds on maximum sizes. The value registered into tstun.Wrapper and magicsock.Conn could be an interface, but that has two performance detriments: 1. Method calls on interface values are more expensive since they must go through a virtual method dispatch. 2. The implementation would need a sync.Mutex to protect the statistics value instead of using an atomic.Pointer. Given that methods on constats.Statistics are called for every packet, we want reduce the CPU cost on this hot path. Signed-off-by: Joe Tsai <joetsai@digital-static.net>		2 years ago
.bencher	bencher: add config to suppress failures on benchmark regressions.	3 years ago
.github	.github/workflows: use ubuntu-22.04 for qemu tests	2 years ago
atomicfile	refactor: move from io/ioutil to io and os packages	2 years ago
chirp	all: fix spelling mistakes	2 years ago
client/tailscale	cmd/tailscale,ipn: improve UX of lock init command, cosmetic changes	2 years ago
cmd	net/connstats: invert network logging data flow (#6272 )	2 years ago
control	tailcfg, ipn, controlclient: add MapResponse.ClientVersion, plumb to IPN bus	2 years ago
derp	derp: prevent concurrent access to multiForwarder map	2 years ago
disco	all: use strs.CutPrefix and strs.CutSuffix more	2 years ago
docs	docs/k8s: add secrets patching permission to the tailscale role.	2 years ago
doctor	doctor: add package for running in-depth healthchecks; use in bugreport (#5413 )	2 years ago
envknob	envknob: add CanTaildrop (TS_DISABLE_TAILDROP) to disable taildrop on device	2 years ago
health	util/set: add new set package for SetHandle type	2 years ago
hostinfo	all: remove old +build tags	2 years ago
internal/tooldeps	all: remove old +build tags	2 years ago
ipn	ipn/ipnauth, util/winutil: add temporary LookupPseudoUser workaround to address os/user.LookupId errors on Windows	2 years ago
jsondb	jsondb: small package to load/save JSON DBs.	2 years ago
kube	kube: handle 201 as a valid status code.	2 years ago
licenses	licenses: update win/apple licenses	2 years ago
log	all: remove old +build tags	2 years ago
logpolicy	all: fix spelling mistakes	2 years ago
logtail	types/logid: move logtail ID types here (#6336 )	2 years ago
metrics	util/dirwalk, metrics, portlist: add new package for fast directory walking	2 years ago
net	net/connstats: invert network logging data flow (#6272 )	2 years ago
packages/deb	refactor: move from io/ioutil to io and os packages	2 years ago
paths	all: remove old +build tags	2 years ago
portlist	portlist: wait for lsof cmd to exit	2 years ago
prober	prober: fix test flake	2 years ago
safesocket	all: remove old +build tags	2 years ago
scripts	scripts/installer.sh: add Nobara Linux.	2 years ago
smallzstd	refactor: move from io/ioutil to io and os packages	2 years ago
ssh/tailssh	ssh/tailssh: only call CloseWrite when both stdout and stderr are done	2 years ago
syncs	syncs: add Map (#6260 )	2 years ago
tailcfg	cmd/tailscale,ipn: improve UX of lock init command, cosmetic changes	2 years ago
tempfork	all: remove old +build tags	2 years ago
tka	ipn/ipnlocal,tka: generate a nonce for each TKA	2 years ago
tool	cmd/tsconnect: run wasm-opt on the generated wasm file	2 years ago
tsconst	net/interfaces/windows: update Tailscale interface detection logic to	3 years ago
tsnet	tsnet/example/tshello: use the correct LocalClient for certs	2 years ago
tstest	cmd/tailscaled: unify the two Windows paths + separate IPN server path	2 years ago
tstime	tstime: fix ParseDuration for '6' digit (#6363 )	2 years ago
tsweb	tsweb: export version metrics to Prometheus	2 years ago
types	types/logid: move logtail ID types here (#6336 )	2 years ago
util	ipn/ipnauth, util/winutil: add temporary LookupPseudoUser workaround to address os/user.LookupId errors on Windows	2 years ago
version	all: use strs.CutPrefix and strs.CutSuffix more	2 years ago
wf	all: remove old +build tags	2 years ago
wgengine	net/connstats: invert network logging data flow (#6272 )	2 years ago
words	words: hybrid theory (#6404 )	2 years ago
.gitattributes	.: add .gitattributes entry to use Go hunk-header driver	3 years ago
.gitignore	gitignore: ignore direnv nix-shell environment cache (#6520 )	2 years ago
ALPINE.txt	Docker: add ALPINE.txt to manage alpine versions	2 years ago
AUTHORS	Move Linux client & common packages into a public repo.	5 years ago
CODE_OF_CONDUCT.md	Add a code of conduct.	5 years ago
Dockerfile	cmd/containerboot: PID1 for running tailscaled in a container.	2 years ago
Dockerfile.base	Dockerfile: bump alpine to 3.16	2 years ago
LICENSE	LICENSE: Reformat for Github	4 years ago
Makefile	Makefile: add publishdevimage target	2 years ago
PATENTS	Move Linux client & common packages into a public repo.	5 years ago
README.md	all: require Go 1.19	2 years ago
SECURITY.md	Add a SECURITY.md for vulnerability reports.	5 years ago
VERSION.txt	VERSION.txt: this is 1.33.	2 years ago
api.md	api.md: make it clearer where to get the tailnet name in API calls	2 years ago
build_dist.sh	cmd/tailscaled, net/tstun: add build tags to omit BIRD and TAP	2 years ago
build_docker.sh	cmd/containerboot: PID1 for running tailscaled in a container.	2 years ago
go.mod	cmd/tailscaled, wgengine/router: use wingoes/com for COM initialization instead of go-ole	2 years ago
go.sum	cmd/tailscaled, wgengine/router: use wingoes/com for COM initialization instead of go-ole	2 years ago
go.toolchain.branch	go.toolchain.rev: switch to Go 1.19rc2+	2 years ago
go.toolchain.rev	go.toolchain.rev: update to Go 1.19.2	2 years ago
pull-toolchain.sh	go.toolchain.rev: add update script	3 years ago
shell.nix	shell.nix: add graphviz	2 years ago
staticcheck.conf	staticcheck.conf: remove unnecessary warning	3 years ago
version-embed.go	Docker: add ALPINE.txt to manage alpine versions	2 years ago
version_test.go	Dockerfile: add test that build-env Alpine version matches go.mod	2 years ago

README.md

Tailscale

https://tailscale.com

Private WireGuard® networks made easy

Overview

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

The Android app is at https://github.com/tailscale/tailscale-android

The Synology package is at https://github.com/tailscale/tailscale-synology

Using

We serve packages for a variety of distros 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 that are not open source.

Building

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.

We require the latest Go release, currently Go 1.19.

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.

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.