Instead of just falling back to making a TCP query to an upstream DNS
server when the UDP query returns a truncated query, also start a TCP
query in parallel with the UDP query after a given race timeout. This
ensures that if the upstream DNS server does not reply over UDP (or if
the response packet is blocked, or there's an error), we can still make
queries if the server replies to TCP queries.
This also adds a new package, util/race, to contain the logic required for
racing two different functions and returning the first non-error answer.
Updates tailscale/corp#14809
Signed-off-by: Andrew Dunham <andrew@du.nham.ca>
Change-Id: I4311702016c1093b1beaa31b135da1def6d86316
Make the 'tailscale debug component-logs' command print the component names for
which extra logging can be turned on, for easier discoverability of debug
functions.
Updates #cleanup
Co-authored-by: Paul Scott <paul@tailscale.com>
Signed-off-by: Val <valerie@tailscale.com>
Implements the ability for the address-rewriting code to support rewriting IPv6 addresses.
Specifically, UpdateSrcAddr & UpdateDstAddr.
Signed-off-by: Tom DNetto <tom@tailscale.com>
Updates https://github.com/tailscale/corp/issues/11202
We had a misstep with the semantics when applying an optimization that
showed up in the roll into corp. This test ensures that case and related
cases must be retained.
Updates #9410
Updates #9601
Signed-off-by: James Tucker <james@tailscale.com>
This reverts commit ee90cd02fd.
The outcome is not identical for empty slices. Cloner really needs
tests!
Updates #9601
Signed-off-by: James Tucker <james@tailscale.com>
go-billy is held back at v5.4.1 in order to avoid a newly introduced
subdependency that is not compatible with plan9.
Updates #8043
Signed-off-by: James Tucker <james@tailscale.com>
1.50.0 switched containerboot from using `tailscale up`
to `tailscale login`. A side-effect is that a re-usable
authkey is now re-applied on every boot by `tailscale login`,
where `tailscale up` would ignore an authkey if already
authenticated.
Though this looks like it is changing the default, in reality
it is setting the default to match what 1.48 and all
prior releases actually implemented.
Fixes https://github.com/tailscale/tailscale/issues/9539
Fixes https://github.com/tailscale/corp/issues/14953
Signed-off-by: Denton Gentry <dgentry@tailscale.com>
These were missed when adding NodeCapMap and resulted
in tsnet binaries not being able to turn on funnel.
Fixes#9566
Signed-off-by: Maisem Ali <maisem@tailscale.com>
Ensure that when there is an event on a Tailscale managed Ingress or Service child resource, the right parent type gets reconciled
Updates tailscale/tailscale#502
Signed-off-by: Irbe Krumina <irbe@tailscale.com>
This PR ensures zombie foregrounds are shutdown if a new
ServeConfig is created that wipes the ongoing foreground ones.
For example, "tailscale serve|funnel reset|off" should close
all open sessions.
Updates #8489
Signed-off-by: Marwan Sulaiman <marwan@tailscale.com>
For loading testing & profiling the cost of full netmap updates.
Updates #1909
Change-Id: I0afdf5de9967f8d95c7f81d5b531ed1c92c3208f
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Update github.com/go-json-experiment/json to the latest version
and fix the build in light of some breaking API changes.
Updates #cleanup
Signed-off-by: Joe Tsai <joetsai@digital-static.net>
The test was sending SIGKILL to containerboot, which results in no
signal propagation down to the bash script that is running as a child
process, thus it leaks.
Minor changes to the test daemon script, so that it cleans up the socket
that it creates on exit, and spawns fewer processes.
Fixestailscale/corp#14833
Signed-off-by: James Tucker <james@tailscale.com>
In typical k8s setups, the MTU configured on the eth0 interfaces is typically 1500 which
results in packets being dropped when they make it to proxy pods as the tailscale0 interface
has a 1280 MTU.
As the primary use of this functionality is TCP, add iptables based MSS clamping to allow
connectivity.
Updates #502
Signed-off-by: Maisem Ali <maisem@tailscale.com>
It was tailscale.com/ts-tailnet-target-ip, which was pretty
redundant. Change it to tailscale.com/tailnet-ip.
Updates #502
Signed-off-by: Maisem Ali <maisem@tailscale.com>
Like PeerCapMap, add a field to `tailcfg.Node` which provides
a map of Capability to raw JSON messages which are deferred to be
parsed later by the application code which cares about the specific
capabilities. This effectively allows us to prototype new behavior
without having to commit to a schema in tailcfg, and it also opens up
the possibilities to develop custom behavior in tsnet applications w/o
having to plumb through application specific data in the MapResponse.
Updates #4217
Signed-off-by: Maisem Ali <maisem@tailscale.com>
This adds a new RawMessage type backed by string instead of the
json.RawMessage which is backed by []byte. The byte slice makes
the generated views be a lot more defensive than the need to be
which we can get around by using a string instead.
Updates #cleanup
Signed-off-by: Maisem Ali <maisem@tailscale.com>
And convert all callers over to the methods that check SelfNode.
Now we don't have multiple ways to express things in tests (setting
fields on SelfNode vs NetworkMap, sometimes inconsistently) and don't
have multiple ways to check those two fields (often only checking one
or the other).
Updates #9443
Change-Id: I2d7ba1cf6556142d219fae2be6f484f528756e3c
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
This PR fixes a bug to make sure that we don't allow two configs
exist with duplicate ports
Updates #8489
Signed-off-by: Marwan Sulaiman <marwan@tailscale.com>
The kube-apiserver proxy in the operator would only run in
auth proxy mode but thats not always desirable. There are
situations where the proxy should just be a transparent
proxy and not inject auth headers, so do that using a new
env var APISERVER_PROXY and deprecate the AUTH_PROXY env.
THe new env var has three options `false`, `true` and `noauth`.
Updates #8317
Signed-off-by: Maisem Ali <maisem@tailscale.com>
tailcfg.Node zero-value clone equality checks failed when I added a
[]*foo to the structure, as the zero value and it's clone contained a
different slice header.
Updates #9377
Updates #9408
Signed-off-by: James Tucker <james@tailscale.com>
This PR adds validations for the new new funnel/serve
commands under the following rules:
1. There is always a single config for one port (bg or fg).
2. Foreground configs under the same port cannot co-exists (for now).
3. Background configs can change as long as the serve type is the same.
Updates #8489
Signed-off-by: Marwan Sulaiman <marwan@tailscale.com>
This PR uses the etag/if-match pattern to ensure multiple calls
to SetServeConfig are synchronized. It currently errors out and
asks the user to retry but we can add occ retries as a follow up.
Updates #8489
Signed-off-by: Marwan Sulaiman <marwan@tailscale.com>
It became required as of 6e967446e4
Updates #8052
Change-Id: I08d100534254865293c1beca5beff8e529e4e9ac
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
General cleanup and additional test coverage of WIP code.
* use enum for serveType
* combine instances of ServeConfig access within unset
* cleanMountPoint rewritten into cleanURLPath as it only handles URL paths
* refactor and test expandProxyTargetDev
> **Note**
> Behind the `TAILSCALE_USE_WIP_CODE` flag
updates #8489
Signed-off-by: Tyler Smalley <tyler@tailscale.com>
I missed this in 343c0f1031 and I guess we don't have integration
tests for wasm. But it compiled! :)
Updates #fixup to a #cleanup
Change-Id: If147b90bab254d144ec851a392e8db10ab97f98e
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
It had exactly one user: netstack. Just have LocalBackend notify
netstack when here's a new netmap instead, simplifying the bloated
Engine interface that has grown a bunch of non-Engine-y things.
(plenty of rando stuff remains after this, but it's a start)
Updates #cleanup
Change-Id: I45e10ab48119e962fc4967a95167656e35b141d8
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
I missed connecting some controlknobs.Knobs pieces in 4e91cf20a8
resulting in that breaking control knobs entirely.
Whoops.
The fix in ipn/ipnlocal (where it makes a new controlclient) but to
atone, I also added integration tests. Those integration tests use
a new "tailscale debug control-knobs" which by itself might be useful
for future debugging.
Updates #9351
Change-Id: Id9c89c8637746d879d5da67b9ac4e0d2367a3f0d
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Previously two tsnet nodes in the same process couldn't have disjoint
sets of controlknob settings from control as both would overwrite each
other's global variables.
This plumbs a new controlknobs.Knobs type around everywhere and hangs
the knobs sent by control on that instead.
Updates #9351
Change-Id: I75338646d36813ed971b4ffad6f9a8b41ec91560
Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
Sometimes `go test` would exit and close its stdout before we started reading
it, and we would return that "file closed" error then forget to os.Exit(1).
Fixed to prefer the go test subprocess error and exit regardless of the type of
error.
Fixes#9334
Signed-off-by: Paul Scott <paul@tailscale.com>
Brad Fitzpatrick
Andrew Dunham
Val
Tom DNetto
James Tucker
Claire Wang
Maisem Ali
Denton Gentry
Andrea Barisani
Irbe Krumina
Marwan Sulaiman
Joe Tsai
Will Norris
Tyler Smalley
Tyler Smalley
Paul Scott