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>
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>
Saves ~53 KB from the min build.
Updates #12614
Change-Id: I73f9544a9feea06027c6ebdd222d712ada851299
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Saves ~102 KB from the min build.
Updates #12614
Change-Id: Ie1d4f439321267b9f98046593cb289ee3c4d6249
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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>
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>
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>
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>
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>
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>
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>
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>
Saves 442 KB. Lock it with a new min test.
Updates #12614
Change-Id: Ia7bf6f797b6cbf08ea65419ade2f359d390f8e91
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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>
In Dec 2021 in d3d503d997 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>
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>
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>
Allow the user to access information about routes an app connector has
learned, such as how many routes for each domain.
Fixestailscale/corp#32624
Signed-off-by: Fran Bull <fran@tailscale.com>
It has nothing to do with logtail and is confusing named like that.
Updates #cleanup
Updates #17323
Change-Id: Idd34587ba186a2416725f72ffc4c5778b0b9db4a
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Now cmd/derper doesn't depend on iptables, nftables, and netlink code :)
But this is really just a cleanup step I noticed on the way to making
tsnet applications able to not link all the OS router code which they
don't use.
Updates #17313
Change-Id: Ic7b4e04e3a9639fd198e9dbeb0f7bae22a4a47a9
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
And yay: tsnet (and thus k8s-operator etc) no longer depends on
portlist! And LocalBackend is smaller.
Removes 50 KB from the minimal binary.
Updates #12614
Change-Id: Iee04057053dc39305303e8bd1d9599db8368d926
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This exports a number of things from the derp (generic + client) package
to be used by the new derpserver package, as now used by cmd/derper.
And then enough other misc changes to lock in that cmd/tailscaled can
be configured to not bring in tailscale.com/client/local. (The webclient
in particular, even when disabled, was bringing it in, so that's now fixed)
Fixes#17257
Change-Id: I88b6c7958643fb54f386dd900bddf73d2d4d96d5
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This commit modifies the k8s operator to wrap its logger using the logtail
logger provided via the tsnet server. This causes any logs written by
the operator to make their way to Tailscale in the same fashion as
wireguard logs to be used by support.
This functionality can also be opted-out of entirely using the
"TS_NO_LOGS_NO_SUPPORT" environment variable.
Updates https://github.com/tailscale/corp/issues/32037
Signed-off-by: David Bond <davidsbond93@gmail.com>
tsnet apps in particular never use the Linux DNS OSManagers, so they don't need
DBus, etc. I started to pull that all out into separate features so tsnet doesn't
need to bring in DBus, but hit this first.
Here you can see that tsnet (and the k8s-operator) no longer pulls in inotify.
Updates #17206
Change-Id: I7af0f391f60c5e7dbeed7a080346f83262346591
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
* tsnet,internal/client/tailscale: resolve OAuth into authkeys in tsnet
Updates #8403.
* internal/client/tailscale: omit OAuth library via build tag
Updates #12614.
Signed-off-by: Naman Sood <mail@nsood.in>
It doesn't really pull its weight: it adds 577 KB to the binary and
is rarely useful.
Also, we now have static IPs and other connectivity paths coming
soon enough.
Updates #5853
Updates #1278
Updates tailscale/corp#32168
Change-Id: If336fed00a9c9ae9745419e6d81f7de6da6f7275
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
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 <claus@tailscale.com>
This commit adds a new method to the tsnet.Server type named `Logger`
that returns the underlying logtail instance's Logf method.
This is intended to be used within the Kubernetes operator to wrap its
existing logger in a way such that operator specific logs can also be
sent to control for support & debugging purposes.
Updates https://github.com/tailscale/corp/issues/32037
Signed-off-by: David Bond <davidsbond93@gmail.com>
* cmd/tailscale/cli: use client/local instead of deprecated client/tailscale
Updates tailscale/corp#22748
Signed-off-by: Alex Chan <alexc@tailscale.com>
* derp: use client/local instead of deprecated client/tailscale
Updates tailscale/corp#22748
Signed-off-by: Alex Chan <alexc@tailscale.com>
---------
Signed-off-by: Alex Chan <alexc@tailscale.com>
This is step 4 of making syspolicy a build-time feature.
This adds a policyclient.Get() accessor to return the correct
implementation to use: either the real one, or the no-op one. (A third
type, a static one for testing, also exists, so in general a
policyclient.Client should be plumbed around and not always fetched
via policyclient.Get whenever possible, especially if tests need to use
alternate syspolicy)
Updates #16998
Updates #12614
Change-Id: Iaf19670744a596d5918acfa744f5db4564272978
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Step 3 in the series. See earlier cc532efc20 and d05e6dc09e.
This step moves some types into a new leaf "ptype" package out of the
big "settings" package. The policyclient.Client will later get new
methods to return those things (as well as Duration and Uint64, which
weren't done at the time of the earlier prototype).
Updates #16998
Updates #12614
Change-Id: I4d72d8079de3b5351ed602eaa72863372bd474a2
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This is step 2 of ~4, breaking up #14720 into reviewable chunks, with
the aim to make syspolicy be a build-time configurable feature.
Step 1 was #16984.
In this second step, the util/syspolicy/policyclient package is added
with the policyclient.Client interface. This is the interface that's
always present (regardless of build tags), and is what code around the
tree uses to ask syspolicy/MDM questions.
There are two implementations of policyclient.Client for now:
1) NoPolicyClient, which only returns default values.
2) the unexported, temporary 'globalSyspolicy', which is implemented
in terms of the global functions we wish to later eliminate.
This then starts to plumb around the policyclient.Client to most callers.
Future changes will plumb it more. When the last of the global func
callers are gone, then we can unexport the global functions and make a
proper policyclient.Client type and constructor in the syspolicy
package, removing the globalSyspolicy impl out of tsd.
The final change will sprinkle build tags in a few more places and
lock it in with dependency tests to make sure the dependencies don't
later creep back in.
Updates #16998
Updates #12614
Change-Id: Ib2c93d15c15c1f2b981464099177cd492d50391c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This is step 1 of ~3, breaking up #14720 into reviewable chunks, with
the aim to make syspolicy be a build-time configurable feature.
In this first (very noisy) step, all the syspolicy string key
constants move to a new constant-only (code-free) package. This will
make future steps more reviewable, without this movement noise.
There are no code or behavior changes here.
The future steps of this series can be seen in #14720: removing global
funcs from syspolicy resolution and using an interface that's plumbed
around instead. Then adding build tags.
Updates #12614
Change-Id: If73bf2c28b9c9b1a408fe868b0b6a25b03eeabd1
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
DERP writes go via TCP and the host OS will have plenty of buffer space.
We've observed in the wild with a backed up TCP socket kernel side
buffers of >2.4MB. The DERP internal queue being larger causes an
increase in the probability that the contents of the backbuffer are
"dead letters" - packets that were assumed to be lost.
A first step to improvement is to size this queue only large enough to
avoid some of the initial connect stall problem, but not large enough
that it is contributing in a substantial way to buffer bloat /
dead-letter retention.
Updates tailscale/corp#31762
Signed-off-by: James Tucker <james@tailscale.com>
I need a ringbuffer in the more traditional sense, one that has a notion
of item removal as well as tail loss on overrun. This implementation is
really a clearable log window, and is used as such where it is used.
Updates #cleanup
Updates tailscale/corp#31762
Signed-off-by: James Tucker <james@tailscale.com>
Brad Fitzpatrick
M. J. Fromberger
Claus Lensbøl
Fran Bull
Jordan Whited
David Bond
Naman Sood
Alex Chan
James Tucker
Patrick O'Doherty