65fd320aa6
The nodeBackend's netMap.Peers slice is frozen at the last full netmap install; the live per-peer state lives in the nodeBackend.peers map, updated by delta mutations. Three spots still read the stale slice or paid to materialize a fresh one: AppendMatchingPeers iterated netMap.Peers and re-looked-up each ID in the peers map (with a lock round-trip per peer), so peers added by a delta since the last full netmap were invisible to it. That affected its callers: taildrop's file-target list, exit node suggestions, and conn25's connector discovery. It now snapshots the peers map directly (sorted by node ID, matching the old netmap ordering). DebugPeerDiscoKeys read netMap.Peers and so returned stale disco keys after deltas. It now reads the peers map via the new nodeBackend.peerDiscoKeys. pingPeerAPI called NetMapWithPeers, building and sorting the full O(n) peer slice, just to linearly scan it for one IP. It now uses the nodeBackend's existing by-address index and the new O(1) PeerByID accessor, and passes the peers-free netmap to peerAPIBase, which only reads the self node's addresses. Updates #12542 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com> Change-Id: I2e57527d64733b4eb17006f896faaa907b1d128c
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 1.26. (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.