311dd3839d
Replace Conn.peers (sorted views.Slice) with peersByID, a map[tailcfg.NodeID]tailcfg.NodeView. The only caller that needed the sorted slice (the disco message receive path's binary search) becomes a single map lookup. Drop nodesEqual. Add Conn.UpsertPeer / Conn.RemovePeer for O(1) single-peer endpoint work. RemovePeer also performs a targeted single-disco-key cleanup (previously that scan was O(discoInfo)). Extract the shared per-peer upsert body as upsertPeerLocked; still used by SetNetworkMap's bulk path. SetNetworkMap is documented as the bulk / initial / self-change path; UpsertPeer and RemovePeer are preferred for single-peer changes. Make the relay server set update O(1) per peer: add serverUpsertCh / serverRemoveCh to relayManager with matching run-loop handlers. UpsertPeer / RemovePeer evaluate the per-peer relay predicate locally and dispatch upsert or remove. The full-rebuild updateRelayServersSet stays for the initial netmap, filter changes, and fallback. Move the hasPeerRelayServers atomic from Conn onto relayManager, next to the serversByNodeKey map it summarizes. The run loop is now the single writer and needs no back-pointer to Conn; endpoint's two hot-path readers take one extra hop to de.c.relayManager.hasPeerRelayServers but the cost is the same atomic load. No callers use UpsertPeer/RemovePeer yet; a subsequent change will plumb per-peer add/remove through the incremental map update path. Updates #12542 Change-Id: If6a3442fe29ccbd77890ea61b754a4d1ad6ef225 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.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 1.26. (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.