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2026-01-23all: remove AUTHORS file and references to itWill Norris1-1/+1
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>
2025-10-02control/controlclient: remove x/net/http2, use net/httpBrad Fitzpatrick1-2/+2
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>
2025-09-20control/controlhttp: simplify, fix race dialing, remove priority conceptBrad Fitzpatrick1-1/+0
controlhttp has the responsibility of dialing a set of candidate control endpoints in a way that minimizes user facing latency. If one control endpoint is unavailable we promptly dial another, racing across the dimensions of: IPv6, IPv4, port 80, and port 443, over multiple server endpoints. In the case that the top priority endpoint was not available, the prior implementation would hang waiting for other results, so as to try to return the highest priority successful connection to the rest of the client code. This hang would take too long with a large dialplan and sufficient client to endpoint latency as to cause the server to timeout the connection due to inactivity in the intermediate state. Instead of trying to prioritize non-ideal candidate connections, the first successful connection is now used unconditionally, improving user facing latency and avoiding any delays that would encroach on the server-side timeout. The tests are converted to memnet and synctest, running on all platforms. Fixes #8442 Fixes tailscale/corp#32534 Co-authored-by: James Tucker <james@tailscale.com> Change-Id: I4eb57f046d8b40403220e40eb67a31c41adb3a38 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> Signed-off-by: James Tucker <james@tailscale.com>
2025-04-08net/{netx,memnet},all: add netx.DialFunc, move memnet Network implBrad Fitzpatrick1-1/+2
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 <bradfitz@tailscale.com>
2025-03-25control/controlhttp: quiet "forcing port 443" log spamBrad Fitzpatrick1-0/+6
Minimal mitigation that doesn't do the full refactor that's probably warranted. Updates #15402 Change-Id: I79fd91de0e0661d25398f7d95563982ed1d11561 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2024-11-20cmd/tailscale/cli: create netmon in debug ts2021Andrew Dunham1-0/+2
Otherwise we'll see a panic if we hit the dnsfallback code and try to call NewDialer with a nil NetMon. Updates #14161 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: I81c6e72376599b341cb58c37134c2a948b97cf5f
2024-11-07control/controlhttp/controlhttpserver: split out Accept to its own packageBrad Fitzpatrick1-9/+0
Otherwise all the clients only using control/controlhttp for the ts2021 HTTP client were also pulling in WebSocket libraries, as the server side always needs to speak websockets, but only GOOS=js clients speak it. This doesn't yet totally remove the websocket dependency on Linux because Linux has a envknob opt-in to act like GOOS=js for manual testing and force the use of WebSockets for DERP only (not control). We can put that behind a build tag in a future change to eliminate the dep on all GOOSes. Updates #1278 Change-Id: I4f60508f4cad52bf8c8943c8851ecee506b7ebc9 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2024-10-02control/control{client,http}: don't noise dial localhost:443 in http-only testsBrad Fitzpatrick1-0/+7
1eaad7d3deb regressed some tests in another repo that were starting up a control server on `http://127.0.0.1:nnn`. Because there was no https running, and because of a bug in 1eaad7d3deb (which ended up checking the recently-dialed-control check twice in a single dial call), we ended up forcing only the use of TLS dials in a test that only had plaintext HTTP running. Instead, plumb down support for explicitly disabling TLS fallbacks and use it only when running in a test and using `http` scheme control plane URLs to 127.0.0.1 or localhost. This fixes the tests elsewhere. Updates #13597 Change-Id: I97212ded21daf0bd510891a278078daec3eebaa6 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2024-10-01control/controlhttp: factor out some code in prep for future changeBrad Fitzpatrick1-2/+3
This pulls out the clock and forceNoise443 code into methods on the Dialer as cleanup in its own commit to make a future change less distracting. Updates #13597 Change-Id: I7001e57fe7b508605930c5b141a061b6fb908733 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2024-04-26health, all: remove health.Global, finish plumbing health.TrackerBrad Fitzpatrick1-0/+4
Updates #11874 Updates #4136 Change-Id: I414470f71d90be9889d44c3afd53956d9f26cd61 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-08-04control: use tstime instead of time (#8595)Claire Wang1-0/+5
Updates #8587 Signed-off-by: Claire Wang <claire@tailscale.com>
2023-05-01control/controlclient: use dnscache.Resolver for Noise clientAndrew Dunham1-0/+5
This passes the *dnscache.Resolver down from the Direct client into the Noise client and from there into the controlhttp client. This retains the Resolver so that it can share state across calls instead of creating a new resolver. Updates #4845 Updates #6110 Signed-off-by: Andrew Dunham <andrew@du.nham.ca> Change-Id: Ia5d6af1870f3b5b5d7dd5685d775dcf300aec7af
2023-04-20all: avoid repeated default interface lookupsMihai Parparita1-0/+3
On some platforms (notably macOS and iOS) we look up the default interface to bind outgoing connections to. This is both duplicated work and results in logspam when the default interface is not available (i.e. when a phone has no connectivity, we log an error and thus cause more things that we will try to upload and fail). Fixed by passing around a netmon.Monitor to more places, so that we can use its cached interface state. Fixes #7850 Updates #7621 Signed-off-by: Mihai Parparita <mihai@tailscale.com>
2023-02-08control/controlhttp: don't require valid TLS cert for Noise connectionBrad Fitzpatrick1-3/+3
We don't require any cert at all for Noise-over-plaintext-port-80-HTTP, so why require a valid cert chain for Noise-over-HTTPS? The reason we use HTTPS at all is to get through firewalls that allow tcp/443 but not tcp/80, not because we need the security properties of TLS. Updates #3198 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
2023-01-27all: update copyright and license headersWill Norris1-3/+2
This updates all source files to use a new standard header for copyright and license declaration. Notably, copyright no longer includes a date, and we now use the standard SPDX-License-Identifier header. This commit was done almost entirely mechanically with perl, and then some minimal manual fixes. Updates #6865 Signed-off-by: Will Norris <will@tailscale.com>
2022-09-23tailcfg, control/controlhttp, control/controlclient: add ControlDialPlan ↵Andrew Dunham1-0/+7
field (#5648) * tailcfg, control/controlhttp, control/controlclient: add ControlDialPlan field This field allows the control server to provide explicit information about how to connect to it; useful if the client's link status can change after the initial connection, or if the DNS settings pushed by the control server break future connections. Change-Id: I720afe6289ec27d40a41b3dcb310ec45bd7e5f3e Signed-off-by: Andrew Dunham <andrew@tailscale.com>
2022-09-16control/controlhttp: move Dial options into options struct (#5661)Andrew Dunham1-0/+65
This turns 'dialParams' into something more like net.Dialer, where configuration fields are public on the struct. Split out of #5648 Change-Id: I0c56fd151dc5489c3c94fb40d18fd639e06473bc Signed-off-by: Andrew Dunham <andrew@tailscale.com>
2022-06-02control/controlhttp: allow client and server to communicate over WebSocketsMihai Parparita1-0/+20
We can't do Noise-over-HTTP in Wasm/JS (because we don't have bidirectional communication), but we should be able to do it over WebSockets. Reuses derp WebSocket support that allows us to turn a WebSocket connection into a net.Conn. Updates #3157 Signed-off-by: Mihai Parparita <mihai@tailscale.com>