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Brad Fitzpatrick 7f3c1932b5 tsnet: fix panic on race between listener.Close and incoming packet 
I saw this panic while writing a new test for #14715:

    panic: send on closed channel

    goroutine 826 [running]:
    tailscale.com/tsnet.(*listener).handle(0x1400031a500, {0x1035fbb00, 0x14000b82300})
            /Users/bradfitz/src/tailscale.com/tsnet/tsnet.go:1317 +0xac
    tailscale.com/wgengine/netstack.(*Impl).acceptTCP(0x14000204700, 0x14000882100)
            /Users/bradfitz/src/tailscale.com/wgengine/netstack/netstack.go:1320 +0x6dc
    created by gvisor.dev/gvisor/pkg/tcpip/transport/tcp.(*Forwarder).HandlePacket in goroutine 807
            /Users/bradfitz/go/pkg/mod/gvisor.dev/gvisor@v0.0.0-20240722211153-64c016c92987/pkg/tcpip/transport/tcp/forwarder.go:98 +0x32c
    FAIL    tailscale.com/tsnet     0.927s

Updates #14715

Change-Id: I9924e0a6c2b801d46ee44eb8eeea0da2f9ea17c4
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-01-21 10:32:58 -08:00
.bencher
.github .github: Bump golangci/golangci-lint-action from 6.1.0 to 6.2.0 (#14696) 2025-01-20 12:48:50 -07:00
appc util/slicesx: add MapKeys and MapValues from golang.org/x/exp/maps 2025-01-03 10:48:31 -08:00
atomicfile atomicfile: use ReplaceFile on Windows so that attributes and ACLs are preserved 2025-01-15 13:57:37 -05:00
chirp
client client/tailscale: fix typo in comment 2025-01-14 16:55:32 -06:00
clientupdate clientupdate: don't link distsign on platforms that don't download 2024-10-10 06:32:50 -07:00
cmd build(deps): bump braces from 3.0.2 to 3.0.3 in /cmd/tsconnect (#12468) 2025-01-20 22:24:13 -07:00
control tailcfg,control/controlclient: treat nil AllowedIPs as Addresses [capver 112] 2025-01-15 07:28:25 -08:00
derp derp: add bytes dropped metric (#14698) 2025-01-20 12:31:26 -05:00
disco disco: correct noun for nacl box type in disco docs 2023-12-14 16:41:53 -08:00
docs docs/k8s: add some high-level operator architecture diagrams (#13915) 2024-12-17 15:36:57 +00:00
doctor net/{interfaces,netmon}, all: merge net/interfaces package into net/netmon 2024-04-28 07:34:52 -07:00
drive cmd/viewer,all: consistently use "read-only" instead of "readonly" 2025-01-14 08:26:56 -08:00
envknob all: use iterators in more places instead of Range funcs 2025-01-04 11:01:00 -08:00
gokrazy gokrazy, various: use point versions of Go and update Nix deps 2024-09-16 16:06:43 -04:00
health health: fix TestHealthMetric to pass on release branch 2024-12-05 15:50:56 -08:00
hostinfo hostinfo: improve accuracy of Linux desktop detection heuristic 2025-01-08 11:12:11 -08:00
internal all: add test for package comments, fix, add comments as needed 2024-07-10 09:57:00 -07:00
ipn Revert "ipn/ipnlocal: re-advertise appc routes on startup (#14609)" 2025-01-21 08:10:28 -08:00
jsondb
k8s-operator cmd/k8s-operator,k8s-operator: allow users to set custom labels for the optional ServiceMonitor (#14475) 2025-01-09 07:15:19 +00:00
kube cmd/{k8s-operator,containerboot},kube/kubetypes: parse Ingresses for ingress ProxyGroup (#14583) 2025-01-21 05:21:03 +00:00
licenses licenses: update license notices 2024-11-19 09:25:57 -08:00
log log/sockstatlog: don't block for more than 5s on shutdown 2024-07-12 17:50:11 +01:00
logpolicy Switch logging service from log.tailscale.io to log.tailscale.com (#14398) 2024-12-16 14:53:34 -08:00
logtail Switch logging service from log.tailscale.io to log.tailscale.com (#14398) 2024-12-16 14:53:34 -08:00
metrics metrics,syncs: add ShardedInt support to metrics.LabelMap 2024-12-23 13:10:18 -08:00
net net/tstun: add logging to aid developers missing Start calls 2025-01-16 17:28:30 -08:00
omit cmd/tailscaled, ipn/conffile: support ec2 user-data config file 2024-05-30 09:49:18 -07:00
packages/deb go.mod: upgrade nfpm to v2 (#8786) 2023-08-03 13:00:45 -07:00
paths all: illumos/solaris userspace only support 2025-01-09 14:46:23 -08:00
portlist all: use Go 1.22 range-over-int 2024-04-16 15:32:38 -07:00
posture control/controlclient,posture,util/syspolicy: use predefined syspolicy keys instead of string literals 2024-09-04 15:25:19 -05:00
prober prober: remove DERP pub key copying overheads in qd and non-tun measures (#14659) 2025-01-15 16:28:49 -08:00
proxymap ipnlocal,proxymap,wgengine/netstack: add optional WhoIs/proxymap debug 2024-09-10 14:23:33 -07:00
release release/dist: clamp min / max version for synology package centre (#13857) 2024-10-18 14:20:40 -06:00
safesocket safesocket: don't depend on go-ps on iOS 2024-10-09 18:35:53 -07:00
safeweb safeweb: add a Shutdown method to the Server type (#14048) 2024-11-08 10:02:16 -08:00
scripts scripts/install.sh: add special case for Parrot Security (#14487) 2024-12-30 17:22:48 +00:00
sessionrecording sessionrecording: implement v2 recording endpoint support (#14105) 2024-11-18 09:55:54 -08:00
smallzstd all: use Go 1.22 range-over-int 2024-04-16 15:32:38 -07:00
ssh/tailssh all: fix golangci-lint errors 2025-01-07 13:05:37 -08:00
syncs syncs: add ShardedInt expvar.Var type 2024-12-19 14:58:28 -08:00
tailcfg ipn/ipnlocal,tailcfg: communicate to control whether funnel is enabled (#14688) 2025-01-21 05:17:27 +00:00
taildrop taildrop: fix defer in loop (#13757) 2024-10-09 14:09:58 -07:00
tempfork cmd/tailscale: add shell tab-completion 2024-04-17 18:54:10 +01:00
tka tka: truncate long rotation signature chains 2024-09-04 22:17:21 +01:00
tool tool/gocross: remove trimpath from test builds 2024-10-28 16:10:55 -07:00
tsconst cmd/tailscale/cli: support passing network lock keys via files 2024-08-14 09:18:34 -07:00
tsd util/usermetrics: make usermetrics non-global 2024-09-25 15:57:00 +02:00
tsnet tsnet: fix panic on race between listener.Close and incoming packet 2025-01-21 10:32:58 -08:00
tstest all: add Node.HomeDERP int, phase out "127.3.3.40:$region" hack [capver 111] 2025-01-14 12:27:14 -08:00
tstime all: use math/rand/v2 more 2024-06-05 15:24:04 -07:00
tsweb tsweb: change RequestID format to have a date in it 2024-11-20 15:55:09 -08:00
types types/lazy: fix flaky TestDeferAfterDo 2025-01-15 15:38:51 -06:00
util ipnlocal: allow overriding os.Hostname() via syspolicy (#14676) 2025-01-17 14:52:47 -08:00
version util/uniq,types/lazy,*: delete code that's now in Go std 2025-01-12 19:49:02 -08:00
wf wf/firewall: allow link-local multicast for permitted local routes when the killswitch is on on Windows 2024-10-02 18:36:01 -05:00
wgengine all: add Node.HomeDERP int, phase out "127.3.3.40:$region" hack [capver 111] 2025-01-14 12:27:14 -08:00
words words: Add scoville to scales.txt (#14084) 2024-11-13 09:25:12 -08:00
.gitattributes
.gitignore tstest/tailmac: add customized macOS virtualization tooling (#13146) 2024-08-19 15:01:19 -04:00
.golangci.yml ci: run 'go vet' in golangci-lint; fix errors in tests 2023-12-07 15:08:28 -05:00
ALPINE.txt Revert "Dockerfile: bump base alpine image (#14604)" (#14620) 2025-01-13 10:02:26 -08:00
api.md {api.md,publicapi}: remove old API docs (#13468) 2024-09-13 14:10:33 -06:00
assert_ts_toolchain_match.go tailscaleroot: panic if tailscale_go build tag but Go toolchain mismatch 2024-10-06 15:22:04 -07:00
AUTHORS
build_dist.sh cmd/tailscale: add shell tab-completion 2024-04-17 18:54:10 +01:00
build_docker.sh Makefile,./build_docker.sh: update kube operator image build target name (#14251) 2024-11-29 15:32:18 +00:00
CODE_OF_CONDUCT.md
CODEOWNERS CODEOWNERS: add the start of an owners file 2023-08-16 15:57:29 -07:00
Dockerfile Revert "Dockerfile: bump base alpine image (#14604)" (#14620) 2025-01-13 10:02:26 -08:00
Dockerfile.base Revert "Dockerfile: bump base alpine image (#14604)" (#14620) 2025-01-13 10:02:26 -08:00
flake.lock nix: update nix and use go 1.23 2024-08-29 17:25:13 +02:00
flake.nix gokrazy, various: use point versions of Go and update Nix deps 2024-09-16 16:06:43 -04:00
go.mod go.{mod,sum},cmd/{k8s-operator,derper,stund}/depaware.txt: bump kube deps (#14601) 2025-01-17 05:37:53 +00:00
go.mod.sri go.mod.sri: update SRI hash for go.mod changes 2024-09-05 10:06:02 -07:00
go.sum go.{mod,sum},cmd/{k8s-operator,derper,stund}/depaware.txt: bump kube deps (#14601) 2025-01-17 05:37:53 +00:00
go.toolchain.branch all: switch to and require Go 1.23 2024-08-22 12:31:08 -07:00
go.toolchain.rev syncs: add ShardedInt expvar.Var type 2024-12-19 14:58:28 -08:00
gomod_test.go go.mod: add test that replace directives aren't added in oss 2023-09-29 12:31:52 -07:00
header.txt cmd/k8s-operator: operator can create subnetrouter (#9505) 2023-12-14 13:51:59 +00:00
LICENSE all: update tools that manage copyright headers 2023-01-27 15:36:29 -08:00
Makefile ssh/tailssh: remove unused public key support 2024-12-12 11:16:55 -08:00
PATENTS
pkgdoc_test.go all: add test for package comments, fix, add comments as needed 2024-07-10 09:57:00 -07:00
pull-toolchain.sh pull-toolchain.sh: don't run update-flake.sh 2023-02-09 15:04:01 -08:00
README.md Update README to reference correct Commit Style URL 2025-01-04 15:11:10 -08:00
SECURITY.md
shell.nix go.mod.sri: update SRI hash for go.mod changes 2024-09-05 10:06:02 -07:00
staticcheck.conf all: cleanup unused code, part 2 (#10670) 2023-12-21 17:40:03 -08:00
update-flake.sh Code Improvements (#11311) 2024-03-08 15:24:36 -08:00
version_tailscale_test.go tailscaleroot: panic if tailscale_go build tag but Go toolchain mismatch 2024-10-06 15:22:04 -07:00
version_test.go go.mod,wgengine/netstack: bump gvisor 2024-01-19 18:23:53 -08:00
version-embed.go Fix various linting, vet & static check issues 2025-01-04 15:11:10 -08:00
VERSION.txt VERSION.txt: this is v1.79.0 2024-12-06 11:25:12 -06:00

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:

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 1.23. (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.