So we have a documented & tested way to check whether we're in
netstack mode. To be used by future commits.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
For discovery when an explicit hostname/IP is known. We'll still
also send it via control for finding peers by a list.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The concrete type being encoded changed from a value to pointer
earlier and this was never adjusted.
(People don't frequently use TS_DEBUG_MAP to see requests, so it went
unnoticed until now.)
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
IPv4 and IPv6 both work remotely, but IPv6 doesn't yet work from the
machine itself due to routing mysteries.
Untested yet on iOS, but previous prototype worked on iOS, so should
work the same.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Now callers (wgengine/monitor) don't need to mutate the state to remove
boring interfaces before calling State.Equal. Instead, the methods
to remove boring interfaces from the State are removed, as is
the reflect-using Equal method itself, and in their place is
a new EqualFiltered method that takes a func predicate to match
interfaces to compare.
And then the FilterInteresting predicate is added for use
with EqualFiltered to do the job that that wgengine/monitor
previously wanted.
Now wgengine/monitor can keep the full interface state around,
including the "boring" interfaces, which we'll need for peerapi on
macOS/iOS to bind to the interface index of the utunN device.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We have it already but threw it away. But macOS/iOS code will
be needing the interface index, so hang on to it.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
So we can empty import the guts of cmd/tailscaled from another
module for go mod tidy reasons.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This adds an easy and portable way for us to document how to get
your Tailscale IP address.
$ tailscale ip
100.74.70.3
fd7a:115c:a1e0:ab12:4843:cd96:624a:4603
$ tailscale ip -4
100.74.70.3
$ tailscale ip -6
fd7a:115c:a1e0:ab12:4843:cd96:624a:4603
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
e.g.
$ tailscale ping 1.1.1.1
exit node found but not enabled
$ tailscale ping 10.2.200.2
node "tsbfvlan2" found, but not using its 10.2.200.0/24 route
$ sudo tailscale up --accept-routes
$ tailscale ping 10.2.200.2
pong from tsbfvlan2 (100.124.196.94) via 10.2.200.34:41641 in 1ms
$ tailscale ping mon.ts.tailscale.com
pong from monitoring (100.88.178.64) via DERP(sfo) in 83ms
pong from monitoring (100.88.178.64) via DERP(sfo) in 21ms
pong from monitoring (100.88.178.64) via [2604:a880:4:d1::37:d001]:41641 in 22ms
This necessarily moves code up from magicsock to wgengine, so we can
look at the actual wireguard config.
Fixes#1564
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Add proto to flowtrack.Tuple.
Add types/ipproto leaf package to break a cycle.
Server-side ACL work remains.
Updates #1516
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Mash up some code from ffcli and std's flag package to make a default
usage func that's super explicit for those not familiar with the Go
style flags. Only show double hyphens in usage text (but still accept both),
and show default values, and only show the proper usage of boolean flags.
Fixes#1353Fixes#1529
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The direct client already logs it in JSON form. Then it's immediately
logged again in an unformatted dump, so this removes that unformatted
one.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This reverts the revert commit 84aba349d9.
And changes us to use inet.af/netstack.
Updates #1518
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
In f45a9e291b (2021-03-04), I tried to bump CurrentMapRequestVersion
to 12 but only documented the meaning of 12 but forgot to actually
increase it from 11.
Mapver 11 was added in ea49b1e811 (2021-03-03).
Fix this in its own commit so we can cherry-pick it to the 1.6 release
branch.
Should help iOS battery life on NEProvider.wake/skip events
with useless route updates that shouldn't cause re-STUNs.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We strip them control-side anyway, and we already strip IPv4 link
local, so there's no point uploading them. And iOS has a ton of them,
which results in somewhat silly amount of traffic in the MapRequest.
We'll be doing same-LAN-inter-tailscaled link-local traffic a
different way, with same-LAN discovery.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
To atone for 1d7f9d5b4a, the revert of 4224b3f731.
At least it's fast again, even if it's shelling out to cmd.exe (once now).
Updates #1478
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
gVisor fixed their google/gvisor#1446 so we can include gVisor mode
on 32-bit machines.
A few minor upstream API changes, as normal.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
We basically already had the RIB-parsing Go code for this in both
net/interfaces and wgengine/monitor, for other reasons.
Fixes#1426Fixes#1471
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
So a region can be used if needed, but won't be STUN-probed or used as
its home.
This gives us another possible debugging mechanism for #1310, or can
be used as a short-term measure against DERP flip-flops for people
equidistant between regions if our hysteresis still isn't good enough.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This reverts commit 08949d4ef1.
I think this code was aspirational. There's no code that sets up the
appropriate NAT code using pfctl/etc. See #911 and #1475.
Updates #1475
Updates #911
No server support yet, but we want Tailscale 1.6 clients to be able to respond
to them when the server can do it.
Updates #1310
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
There was a logical race where Conn.Rebind could acquire the
RebindingUDPConn mutex, close the connection, fail to rebind, release
the mutex, and then because the mutex was no longer held, ReceiveIPv4
wouldn't retry reads that failed with net.ErrClosed, letting that
error back to wireguard-go, which would then stop running that receive
IP goroutine.
Instead, keep the RebindingUDPConn mutex held for the entirety of the
replacement in all cases.
Updates tailscale/corp#1289
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
interfaces.State.String tries to print a concise summary of the
network state, removing any interfaces that don't have any or any
interesting IP addresses. On macOS and iOS, for instance, there are a
ton of misc things.
But the link monitor based its are-there-changes decision on
interfaces.State.Equal, which just used reflect.DeepEqual, including
comparing all the boring interfaces. On macOS, when turning wifi on or off, there
are a ton of misc boring interface changes, resulting in hitting an earlier
check I'd added on suspicion this was happening:
[unexpected] network state changed, but stringification didn't
This fixes that by instead adding a new
interfaces.State.RemoveUninterestingInterfacesAndAddresses method that
does, uh, that. Then use that in the monitor. So then when Equal is
used later, it's DeepEqualing the already-cleaned version with only
interesting interfaces.
This makes cmd/tailscaled debug --monitor much less noisy.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Windows was only running the localapi on the debug port which was a
stopgap at the time while doing peercreds work. Removed that, and
wired it up correctly, with some more docs.
More clean-up to do after 1.6, moving the localhost TCP auth code into
the peercreds package. But that's too much for now, so the docs will
have to suffice, even if it's at a bit of an awkward stage with the
newly-renamed "NotWindows" field, which still isn't named well, but
it's better than its old name of "Unknown" which hasn't been accurate
since unix sock peercreds work anyway.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
So the control server can test whether a client's actually present.
Most clients are over HTTP/2, so these pings (to the same host) are
super cheap.
This mimics the earlier goroutine dump mechanism.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Previously the CLI could only find the HTTP auth token when running
the CLI outside the sandbox, not like
/Applications/Tailscale.app/Contents/MacOS/Tailscale when that was
from the App Store.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
The debub subcommand was moved in
6254efb9ef because the monitor brought
in tons of dependencies to the cmd/tailscale binary, but there wasn't
any need to remove the whole subcommand itself.
Add it back, with a tool to dump the local daemon's goroutines.
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Not beautiful, but I'm debugging connectivity problems on
NEProvider.sleep+wake and need more clues.
Updates #1426
Updates tailscale/corp#1289
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
