Brendan Creane
e906e6934d
Since aa5da2e5f, a peer that control adds to a running client arrives as a
netmap delta rather than a full netmap. The delta path never re-resolved
the exit node prefs. An exit node selected by IP before it was in the
netmap stayed unresolved, and an auto exit node stayed on the blackhole
route, until tailscaled restarted or a full netmap arrived.
Re-resolve the exit node in UpdateNetmapDelta when the delta can change
the result. Any upserted peer qualifies while an ExitNodeIP is set. An
exit node being upserted or coming online qualifies while an auto exit
node is unresolved. The selected auto exit node going offline, losing its
exit routes, or being removed qualifies once one is selected. The last
case replaces the separate offline check, so the exit node is resolved
once per delta. The auto exit node check walks every peer, so it only
runs in those cases.
On the delta path, the resolved prefs ride in the same Notify as the peer
changes, sent while b.mu is held. resolveExitNodeLocked no longer sends a
Notify; its callers do. The full-netmap path still sends the prefs in a
separate Notify after the netmap.
Fixes #22012
Updates #22206
Signed-off-by: Brendan Creane <bcreane@gmail.com>
Tailscale
Private WireGuard® networks made easy
Overview
This repository contains the majority of Tailscale's open source code.
Notably, it includes the tailscaled daemon and
the tailscale CLI tool. The tailscaled daemon runs on Linux, Windows,
macOS, and to varying degrees
on FreeBSD and OpenBSD. The Tailscale iOS and Android apps use this repo's
code, but this repo doesn't contain the mobile GUI code.
Other Tailscale repos of note:
- the Android app is at https://github.com/tailscale/tailscale-android
- the Synology package is at https://github.com/tailscale/tailscale-synology
- the QNAP package is at https://github.com/tailscale/tailscale-qpkg
- the Chocolatey packaging is at https://github.com/tailscale/tailscale-chocolatey
For background on which parts of Tailscale are open source and why, see https://tailscale.com/opensource/.
Using
We serve packages for a variety of distros and platforms at https://pkgs.tailscale.com.
Other clients
The macOS, iOS, and Windows clients use the code in this repository but additionally include small GUI wrappers. The GUI wrappers on non-open source platforms are themselves not open source.
Building
We always require the latest Go release, currently Go 1.27. (While we build releases with our Go fork, its use is not required.)
go install tailscale.com/cmd/tailscale{,d}
If you're packaging Tailscale for distribution, use build_dist.sh
instead, to burn commit IDs and version info into the binaries:
./build_dist.sh tailscale.com/cmd/tailscale
./build_dist.sh tailscale.com/cmd/tailscaled
If your distro has conventions that preclude the use of
build_dist.sh, please do the equivalent of what it does in your
distro's way, so that bug reports contain useful version information.
Bugs
Please file any issues about this code or the hosted service on the issue tracker.
Contributing
PRs welcome! But please file bugs. Commit messages should reference bugs.
We require Developer Certificate of
Origin
Signed-off-by lines in commits.
See commit-messages.md (or skim git log) for our commit message style.
About Us
Tailscale is primarily developed by the people at https://github.com/orgs/tailscale/people. For other contributors, see:
- https://github.com/tailscale/tailscale/graphs/contributors
- https://github.com/tailscale/tailscale-android/graphs/contributors
Legal
WireGuard is a registered trademark of Jason A. Donenfeld.