tailscale/wgengine/netstack/netstack_test.go, branch debug-testwrapper

all: remove AUTHORS file and references to it

2026-01-23T23:49:45Z

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

health,ipn/ipnlocal: introduce eventbus in heath.Tracker (#17085)

2025-09-16T15:25:29Z

The Tracker was using direct callbacks to ipnlocal. This PR moves those to be triggered via the eventbus. Additionally, the eventbus is now closed on exit from tailscaled explicitly, and health is now a SubSystem in tsd. Updates #15160 Signed-off-by: Claus Lensbøl

net/netmon: publish events to event bus

2025-04-16T17:10:45Z

Updates #15160 Signed-off-by: David Anderson

all: update the tsd.System constructor name (#15372)

2025-04-16T17:10:45Z

Replace NewSystemWithEventBus with plain NewSystem, and update all usage. See https://github.com/tailscale/tailscale/pull/15355#discussion_r2003910766 Updates #15160 Change-Id: I64d337f09576b41d9ad78eba301a74b9a9d6ebf4 Signed-off-by: M. J. Fromberger

wgengine: plumb an event bus into the userspace engine

2025-04-16T17:10:45Z

Updates #15160 Change-Id: Ia695ccdddd09cd950de22abd000d4c531d6bf3c8 Signed-off-by: M. J. Fromberger

all: construct new System values with an event bus pre-populated

2025-04-16T17:10:45Z

Although, at the moment, we do not yet require an event bus to be present, as we start to add more pieces we will want to ensure it is always available. Add a new constructor and replace existing uses of new(tsd.System) throughout. Update generated files for import changes. Updates #15160 Change-Id: Ie5460985571ade87b8eac8b416948c7f49f0f64b Signed-off-by: M. J. Fromberger

net/{netx,memnet},all: add netx.DialFunc, move memnet Network impl

2025-04-08T17:07:47Z

This adds netx.DialFunc, unifying a type we have a bazillion other places, giving it now a nice short name that's clickable in editors, etc. That highlighted that my earlier move (03b47a55c7956) of stuff from nettest into netx moved too much: it also dragged along the memnet impl, meaning all users of netx.DialFunc who just wanted netx for the type definition were instead also pulling in all of memnet. So move the memnet implementation netx.Network into memnet, a package we already had. Then use netx.DialFunc in a bunch of places. I'm sure I missed some. And plenty remain in other repos, to be updated later. Updates tailscale/corp#27636 Change-Id: I7296cd4591218e8624e214f8c70dab05fb884e95 Signed-off-by: Brad Fitzpatrick

ipn/{ipnlocal,localapi}, wgengine/netstack: call (*LocalBackend).Shutdown when tests that create them complete

2024-11-22T15:46:11Z

We have several places where LocalBackend instances are created for testing, but they are rarely shut down when the tests that created them exit. In this PR, we update newTestLocalBackend and similar functions to use testing.TB.Cleanup(lb.Shutdown) to ensure LocalBackend instances are properly shut down during test cleanup. Updates #12687 Signed-off-by: Nick Khyl

wgengine/netstack: remove unused taildrive deps

2024-11-01T20:40:46Z

A filesystem was plumbed into netstack in 993acf4475b22d693 but hasn't been used since 2d5d6f5403f3. Remove it. Noticed while rebasing a Tailscale fork elsewhere. Updates tailscale/corp#16827 Change-Id: Ib76deeda205ffe912b77a59b9d22853ebff42813 Signed-off-by: Brad Fitzpatrick

util/usermetrics: make usermetrics non-global

2024-09-25T13:57:00Z

this commit changes usermetrics to be non-global, this is a building block for correct metrics if a go process runs multiple tsnets or in tests. Updates #13420 Updates tailscale/corp#22075 Signed-off-by: Kristoffer Dalby