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2026-01-26tsnet: make ListenService examples consistent with other tsnet examplesHarry Harpham2-16/+10
Fixes tailscale/corp#36365 Signed-off-by: Harry Harpham <harry@tailscale.com>
2026-01-23all: remove AUTHORS file and references to itWill Norris11-11/+11
This file was never truly necessary and has never actually been used in the history of Tailscale's open source releases. A Brief History of AUTHORS files --- The AUTHORS file was a pattern developed at Google, originally for Chromium, then adopted by Go and a bunch of other projects. The problem was that Chromium originally had a copyright line only recognizing Google as the copyright holder. Because Google (and most open source projects) do not require copyright assignemnt for contributions, each contributor maintains their copyright. Some large corporate contributors then tried to add their own name to the copyright line in the LICENSE file or in file headers. This quickly becomes unwieldy, and puts a tremendous burden on anyone building on top of Chromium, since the license requires that they keep all copyright lines intact. The compromise was to create an AUTHORS file that would list all of the copyright holders. The LICENSE file and source file headers would then include that list by reference, listing the copyright holder as "The Chromium Authors". This also become cumbersome to simply keep the file up to date with a high rate of new contributors. Plus it's not always obvious who the copyright holder is. Sometimes it is the individual making the contribution, but many times it may be their employer. There is no way for the proejct maintainer to know. Eventually, Google changed their policy to no longer recommend trying to keep the AUTHORS file up to date proactively, and instead to only add to it when requested: https://opensource.google/docs/releasing/authors. They are also clear that: > Adding contributors to the AUTHORS file is entirely within the > project's discretion and has no implications for copyright ownership. It was primarily added to appease a small number of large contributors that insisted that they be recognized as copyright holders (which was entirely their right to do). But it's not truly necessary, and not even the most accurate way of identifying contributors and/or copyright holders. In practice, we've never added anyone to our AUTHORS file. It only lists Tailscale, so it's not really serving any purpose. It also causes confusion because Tailscalars put the "Tailscale Inc & AUTHORS" header in other open source repos which don't actually have an AUTHORS file, so it's ambiguous what that means. Instead, we just acknowledge that the contributors to Tailscale (whoever they are) are copyright holders for their individual contributions. We also have the benefit of using the DCO (developercertificate.org) which provides some additional certification of their right to make the contribution. The source file changes were purely mechanical with: git ls-files | xargs sed -i -e 's/\(Tailscale Inc &\) AUTHORS/\1 contributors/g' Updates #cleanup Change-Id: Ia101a4a3005adb9118051b3416f5a64a4a45987d Signed-off-by: Will Norris <will@tailscale.com>
2026-01-22tsnet: add support for a user-supplied tun.DeviceJames Tucker2-4/+757
tsnet users can now provide a tun.Device, including any custom implementation that conforms to the interface. netstack has a new option CheckLocalTransportEndpoints that when used alongside a TUN enables netstack listens and dials to correctly capture traffic associated with those sockets. tsnet with a TUN sets this option, while all other builds leave this at false to preserve existing performance. Updates #18423 Signed-off-by: James Tucker <james@tailscale.com>
2026-01-22tsnet: clarify that ListenService starts the server if necessaryHarry Harpham1-0/+2
Every other listen method on tsnet.Server makes this clarification, so should ListenService. Fixes tailscale/corp#36207 Signed-off-by: Harry Harpham <harry@tailscale.com>
2026-01-16tsnet: add support for ServicesHarry Harpham5-32/+871
This change allows tsnet nodes to act as Service hosts by adding a new function, tsnet.Server.ListenService. Invoking this function will advertise the node as a host for the Service and create a listener to receive traffic for the Service. Fixes #17697 Fixes tailscale/corp#27200 Signed-off-by: Harry Harpham <harry@tailscale.com>
2026-01-14tsnet: allow for automatic ID token generationMario Minardi2-6/+70
Allow for optionally specifiying an audience for tsnet. This is passed to the underlying identity federation logic to allow for tsnet auth to use automatic ID token generation for authentication. Updates https://github.com/tailscale/corp/issues/33316 Signed-off-by: Mario Minardi <mario@tailscale.com>
2026-01-14cmd,feature: add identity token auto generation for workload identity (#18373)Danni Popova3-8/+80
Adds the ability to detect what provider the client is running on and tries fetch the ID token to use with Workload Identity. Updates https://github.com/tailscale/corp/issues/33316 Signed-off-by: Danni Popova <danni@tailscale.com>
2026-01-12tsnet: use errors.Join and idiomatic field orderHarry Harpham1-12/+2
Updates #18376 (follow up on feedback) Signed-off-by: Harry Harpham <harry@tailscale.com>
2026-01-09tsnet: ensure funnel listener cleans up after itself when closedHarry Harpham2-0/+143
Previously the funnel listener would leave artifacts in the serve config. This caused weird out-of-sync effects like the admin panel showing that funnel was enabled for a node, but the node rejecting packets because the listener was closed. This change resolves these synchronization issues by ensuring that funnel listeners clean up the serve config when closed. See also: https://github.com/tailscale/tailscale/commit/e109cf9fdd405153a8d8c0ec52a87d7c8ce8689b Updates #cleanup Signed-off-by: Harry Harpham <harry@tailscale.com>
2026-01-09tsnet: reset serve config only onceHarry Harpham1-26/+31
Prior to this change, we were resetting the tsnet's serve config every time tsnet.Server.Up was run. This is important to do on startup, to prevent messy interactions with stale configuration when the code has changed. However, Up is frequently run as a just-in-case step (for example, by Server.ListenTLS/ListenFunnel and possibly by consumers of tsnet). When the serve config is reset on each of these calls to Up, this creates situations in which the serve config disappears unexpectedly. The solution is to reset the serve config only on the first call to Up. Fixes #8800 Updates tailscale/corp#27200 Signed-off-by: Harry Harpham <harry@tailscale.com>
2026-01-08net/portmapper, go.mod: unfork our goupnp dependencyAndrew Dunham1-8/+8
Updates #7436 Signed-off-by: Andrew Dunham <andrew@tailscale.com>
2026-01-06wgengine/magicsock: extract IMDS utilities into a standalone package (#18334)Alex Valiushko1-0/+1
Moves magicksock.cloudInfo into util/cloudinfo with minimal changes. Updates #17796 Change-Id: I83f32473b9180074d5cdbf00fa31e5b3f579f189 Signed-off-by: Alex Valiushko <alexvaliushko@tailscale.com>
2025-12-02tsnet: enable node registration via federated identityGesa Stupperich3-9/+286
Updates: tailscale.com/corp#34148 Signed-off-by: Gesa Stupperich <gesa@tailscale.com>
2025-11-24cmd/cigocacher,go.mod: add cigocacher cmdTom Proctor1-0/+1
Adds cmd/cigocacher as the client to cigocached for Go caching over HTTP. The HTTP cache is best-effort only, and builds will fall back to disk-only cache if it's not available, much like regular builds. Not yet used in CI; that will follow in another PR once we have runners available in this repo with the right network setup for reaching cigocached. Updates tailscale/corp#10808 Change-Id: I13ae1a12450eb2a05bd9843f358474243989e967 Signed-off-by: Tom Proctor <tomhjp@users.noreply.github.com>
2025-11-18all: rename variables with lowercase-l/uppercase-IAlex Chan1-5/+5
See http://go/no-ell Signed-off-by: Alex Chan <alexc@tailscale.com> Updates #cleanup Change-Id: I8c976b51ce7a60f06315048b1920516129cc1d5d
2025-11-17go.mod: bump golang.org/x/crypto (#17907)Andrew Lytvynov1-1/+1
Pick up a fix for https://pkg.go.dev/vuln/GO-2025-4116 (even though we're not affected). Updates #cleanup Change-Id: I9f2571b17c1f14db58ece8a5a34785805217d9dd Signed-off-by: Andrew Lytvynov <awly@tailscale.com>
2025-11-16ipn/ipnlocal: add PROXY protocol support to Funnel/ServeAndrew Dunham1-0/+1
This adds the --proxy-protocol flag to 'tailscale serve' and 'tailscale funnel', which tells the Tailscale client to prepend a PROXY protocol[1] header when making connections to the proxied-to backend. I've verified that this works with our existing funnel servers without additional work, since they pass along source address information via PeerAPI already. Updates #7747 [1]: https://www.haproxy.org/download/1.8/doc/proxy-protocol.txt Change-Id: I647c24d319375c1b33e995555a541b7615d2d203 Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
2025-11-16types/netmap: remove PrivateKey from NetworkMapBrad Fitzpatrick1-1/+1
It's an unnecessary nuisance having it. We go out of our way to redact it in so many places when we don't even need it there anyway. Updates #12639 Change-Id: I5fc72e19e9cf36caeb42cf80ba430873f67167c3 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-11util/eventbus: log goroutine stacks when hung in CIBrad Fitzpatrick1-1/+1
Updates #17680 Change-Id: Ie48dc2d64b7583d68578a28af52f6926f903ca4f Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-10tsnet: add tstest.Shard on the slow testsBrad Fitzpatrick2-0/+17
So they're not all run N times on the sharded oss builders and are only run one time each. Updates tailscale/corp#28679 Change-Id: Ie21e84b06731fdc8ec3212eceb136c8fc26b0115 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-09tsnet: fix TestConn to be fast, not flakyBrad Fitzpatrick1-28/+88
Fixes #17805 Change-Id: I36e37cb0cfb2ea7b2341fd4b9809fbf1dd46d991 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-08tsnet: skip a 30s long flaky-ish test on macOSBrad Fitzpatrick1-0/+3
Updates #17805 Change-Id: I540f50d067eee12e430dfd9de6871dc784fffb8a Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-11-04wgengine/netlog: include node OS in logged attributes (#17755)Joe Tsai1-1/+1
Include the node's OS with network flow log information. Refactor the JSON-length computation to be a bit more precise. Updates tailscale/corp#33352 Fixes tailscale/corp#34030 Signed-off-by: Joe Tsai <joetsai@digital-static.net>
2025-10-30logtail: avoid racing eventbus subscriptions with shutdown (#17695)M. J. Fromberger1-0/+1
In #17639 we moved the subscription into NewLogger to ensure we would not race subscribing with shutdown of the eventbus client. Doing so fixed that problem, but exposed another: As we were only servicing events occasionally when waiting for the network to come up, we could leave the eventbus to stall in cases where a number of network deltas arrived later and weren't processed. To address that, let's separate the concerns: As before, we'll Subscribe early to avoid conflicts with shutdown; but instead of using the subscriber directly to determine readiness, we'll keep track of the last-known network state in a selectable condition that the subscriber updates for us. When we want to wait, we'll wait on that condition (or until our context ends), ensuring all the events get processed in a timely manner. Updates #17638 Updates #15160 Change-Id: I28339a372be4ab24be46e2834a218874c33a0d2d Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
2025-10-16wgengine/netlog: merge connstats into package (#17557)Joe Tsai1-2/+1
Merge the connstats package into the netlog package and unexport all of its declarations. Remove the buildfeatures.HasConnStats and use HasNetLog instead. Updates tailscale/corp#33352 Signed-off-by: Joe Tsai <joetsai@digital-static.net>
2025-10-15net/connstats: prepare to remove package (#17554)Joe Tsai1-1/+2
The connstats package was an unnecessary layer of indirection. It was seperated out of wgengine/netlog so that net/tstun and wgengine/magicsock wouldn't need a depenedency on the concrete implementation of network flow logging. Instead, we simply register a callback for counting connections. This PR does the bare minimum work to prepare tstun and magicsock to only care about that callback. A future PR will delete connstats and merge it into netlog. Updates tailscale/corp#33352 Signed-off-by: Joe Tsai <joetsai@digital-static.net>
2025-10-08go.toolchain.rev: bump Go to 1.25.2Brad Fitzpatrick1-1/+1
Updates tailscale/go#135 Change-Id: I89cfb49b998b2fd0264f8d5f4a61af839cd06626 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-07feature/linkspeed: move cosmetic tstun netlink code out to modular featureBrad Fitzpatrick1-2/+1
Part of making all netlink monitoring code optional. Updates #17311 (how I got started down this path) Updates #12614 Change-Id: Ic80d8a7a44dc261c4b8678b3c2241c3b3778370d Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-06util/checkchange: stop using deephash everywhereBrad Fitzpatrick1-1/+2
Saves 45 KB from the min build, no longer pulling in deephash or util/hashx, both with unsafe code. It can actually be more efficient to not use deephash, as you don't have to walk all bytes of all fields recursively to answer that two things are not equal. Instead, you can just return false at the first difference you see. And then with views (as we use ~everywhere nowadays), the cloning the old value isn't expensive, as it's just a pointer under the hood. Updates #12614 Change-Id: I7b08616b8a09b3ade454bb5e0ac5672086fe8aec Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-06feature/condlite/expvar: add expvar stub package when metrics not neededBrad Fitzpatrick1-0/+1
Saves ~53 KB from the min build. Updates #12614 Change-Id: I73f9544a9feea06027c6ebdd222d712ada851299 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-06feature/featuretags: make usermetrics modularBrad Fitzpatrick1-1/+1
Saves ~102 KB from the min build. Updates #12614 Change-Id: Ie1d4f439321267b9f98046593cb289ee3c4d6249 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-04wgengine: stop importing flowtrack when unusedBrad Fitzpatrick1-1/+1
Updates #12614 Change-Id: I42b5c4d623d356af4bee5bbdabaaf0f6822f2bf4 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-04feature/c2n: move answerC2N code + deps out of control/controlclientBrad Fitzpatrick2-2/+4
c2n was already a conditional feature, but it didn't have a feature/c2n directory before (rather, it was using consts + DCE). This adds it, and moves some code, which removes the httprec dependency. Also, remove some unnecessary code from our httprec fork. Updates #12614 Change-Id: I2fbe538e09794c517038e35a694a363312c426a2 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-03feature/ace: make ACE modularBrad Fitzpatrick1-1/+0
Updates #12614 Change-Id: Iaee75d8831c4ba5c9705d7877bb78044424c6da1 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-03health: make it omittableBrad Fitzpatrick1-1/+1
Saves 86 KB. And stop depending on expvar and usermetrics when disabled, in prep to removing all the expvar/metrics/tsweb stuff. Updates #12614 Change-Id: I35d2479ddd1d39b615bab32b1fa940ae8cbf9b11 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-02appc,*: publish events for route updates and storage (#17392)M. J. Fromberger1-2/+2
Add and wire up event publishers for these two event types in the AppConnector. Nothing currently subscribes to them, so this is harmless. Subscribers for these events will be added in a near-future commit. As part of this, move the appc.RouteInfo type to the types/appctype package. It does not contain any package-specific details from appc. Beside it, add appctype.RouteUpdate to carry route update event state, likewise not specific to appc. Update all usage of the appc.* types throughout to use appctype.* instead, and update depaware files to reflect these changes. Add a Close method to the AppConnector to make sure the client gets cleaned up when the connector is dropped (we re-create connectors). Update the unit tests in the appc package to also check the events published alongside calls to the RouteAdvertiser. For now the tests still rely on the RouteAdvertiser for correctness; this is OK for now as the two methods are always performed together. In the near future, we need to rework the tests so not require that, but that will require building some more test fixtures that we can handle separately. Updates #15160 Updates #17192 Change-Id: I184670ba2fb920e0d2cb2be7c6816259bca77afe Signed-off-by: M. J. Fromberger <fromberger@tailscale.com>
2025-10-02control/controlclient: remove x/net/http2, use net/httpBrad Fitzpatrick1-6/+3
Saves 352 KB, removing one of our two HTTP/2 implementations linked into the binary. Fixes #17305 Updates #15015 Change-Id: I53a04b1f2687dca73c8541949465038b69aa6ade Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-02feature/featuretags, all: add build features, use existing ones in more placesBrad Fitzpatrick1-1/+1
Saves 270 KB. Updates #12614 Change-Id: I4c3fe06d32c49edb3a4bb0758a8617d83f291cf5 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-01control/ts2021: rename from internal/noiseconn in prep for controlclient splitBrad Fitzpatrick1-1/+1
A following change will split out the controlclient.NoiseClient type out, away from the rest of the controlclient package which is relatively dependency heavy. A question was where to move it, and whether to make a new (a fifth!) package in the ts2021 dependency chain. @creachadair and I brainstormed and decided to merge internal/noiseconn and controlclient.NoiseClient into one package, with names ts2021.Conn and ts2021.Client. For ease of reviewing the subsequent PR, this is the first step that just renames the internal/noiseconn package to control/ts2021. Updates #17305 Change-Id: Ib5ea162dc1d336c1d805bdd9548d1702dd6e1468 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-01Makefile, cmd/*/depaware.txt: split out vendor packages explicitlyBrad Fitzpatrick1-5/+19
depaware was merging golang.org/x/foo and std's vendor/golang.org/x/foo packages (which could both be in the binary!), leading to confusing output, especially when I was working on eliminating duplicate packages imported under different names. This makes the depaware output longer and grosser, but doesn't hide reality from us. Updates #17305 Change-Id: I21cc3418014e127f6c1a81caf4e84213ce84ab57 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-01net/netmon: remove usage of direct callbacks from netmon (#17292)Claus Lensbøl1-0/+2
The callback itself is not removed as it is used in other repos, making it simpler for those to slowly transition to the eventbus. Updates #15160 Signed-off-by: Claus Lensbøl <claus@tailscale.com>
2025-10-01tsnet: remove AuthenticatedAPITransport (API-over-noise) supportBrad Fitzpatrick1-35/+0
It never launched and I've lost hope of it launching and it's in my way now, so I guess it's time to say goodbye. Updates tailscale/corp#4383 Updates #17305 Change-Id: I2eb551d49f2fb062979cc307f284df4b3dfa5956 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-10-01all: use Go 1.20's errors.Join instead of our multierr packageBrad Fitzpatrick1-1/+0
Updates #7123 Change-Id: Ie9be6814831f661ad5636afcd51d063a0d7a907d Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-30cmd/tailscaled, ipn/localapi, util/eventbus: don't link in regexp when debug ↵Brad Fitzpatrick1-4/+4
is omitted Saves 442 KB. Lock it with a new min test. Updates #12614 Change-Id: Ia7bf6f797b6cbf08ea65419ade2f359d390f8e91 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-30feature, net/tshttpproxy: pull out support for using proxies as a featureBrad Fitzpatrick2-1/+4
Saves 139 KB. Also Synology support, which I saw had its own large-ish proxy parsing support on Linux, but support for proxies without Synology proxy support is reasonable, so I pulled that out as its own thing. Updates #12614 Change-Id: I22de285a3def7be77fdcf23e2bec7c83c9655593 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-30ipn/ipnlocal: drop h2c package, use net/http's supportBrad Fitzpatrick1-2/+1
In Dec 2021 in d3d503d9977ed I had grand plans to make exit node DNS cheaper by using HTTP/2 over PeerAPI, at least on some platforms. I only did server-side support though and never made it to the client. In the ~4 years since, some things have happened: * Go 1.24 got support for http.Protocols (https://pkg.go.dev/net/http#Protocols) and doing UnencryptedHTTP2 ("HTTP2 with prior knowledge") * The old h2c upgrade mechanism was deprecated; see https://github.com/golang/go/issues/63565 and https://github.com/golang/go/issues/67816 * Go plans to deprecate x/net/http2 and move everything to the standard library. So this drops our use of the x/net/http2/h2c package and instead enables h2c (on all platforms now) using the standard library. This does mean we lose the deprecated h2c Upgrade support, but that's fine. If/when we do the h2c client support for ExitDNS, we'll have to probe the peer to see whether it supports it. Or have it reply with a header saying that future requests can us h2c. (It's tempting to use capver, but maybe people will disable that support anyway, so we should discover it at runtime instead.) Also do the same in the sessionrecording package. Updates #17305 Change-Id: If323f5ef32486effb18ed836888aa05c0efb701e Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-29ipn/ipnlocal, feature/posture: pull posture out into a modular featureBrad Fitzpatrick1-3/+1
Updates #12614 Change-Id: I9d08a1330b9c55e1a23e7979a707e11d8e090d79 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-29feature/clientupdate: move clientupdate to a modular feature, disabled for tsnetBrad Fitzpatrick1-35/+32
Updates #12614 Change-Id: I5f685dec84a5396b7c2b66f2788ae3d286e1ddc6 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-29ipn/store, feature/condregister: move AWS + Kube store registration to ↵Brad Fitzpatrick1-91/+11
condregister Otherwise they're uselessly imported by tsnet applications, even though they do nothing. tsnet applications wanting to use these already had to explicitly import them and use kubestore.New or awsstore.New and assign those to their tsnet.Server.Store fields. Updates #12614 Change-Id: I358e3923686ddf43a85e6923c3828ba2198991d4 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2025-09-29wgengine/router{,/osrouter}: split OS router implementations into subpackageBrad Fitzpatrick1-17/+2
So wgengine/router is just the docs + entrypoint + types, and then underscore importing wgengine/router/osrouter registers the constructors with the wgengine/router package. Then tsnet can not pull those in. Updates #17313 Change-Id: If313226f6987d709ea9193c8f16a909326ceefe7 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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