Commit Graph

18 Commits

Author SHA1 Message Date
Riccardo Manfrin
2f268c8141 [client] fix stale routing peer on overlapping-prefix network removal (#6799)
## Describe your changes

The AllowedIPs reference counter
([refcounter/types.go#L9](https://github.com/netbirdio/netbird/blob/e1a24376a/client/internal/routemanager/refcounter/types.go#L9))
was keyed only by prefix and stored a single active peer set by
the first registrar, never swapped. When two networks advertised the
same prefix via different routing peers, removing the one whose peer was
installed in WireGuard left the prefix pointing at the removed peer
instead of the
surviving one — traffic kept flowing to the old peer until a manual
`netbird down/up`.

Made the AllowedIPs counter peer-aware: it tracks a per-peer reference
count per prefix plus the installed peer, and swaps WireGuard to a
surviving peer when the active one releases its last reference (removes
the prefix when
none remain). `Decrement` now takes the peer key so the exact
incremented peer is released; the static handler records its selected
routing peer like the dynamic and DNS handlers already did. The generic
`Counter` (routes,
  exclusion, ipset) is unchanged.

  ## Issue ticket number and link

No public issue — reported internally (routes not updating without
`netbird down/up` when two networks share a subnet). Root cause is the
prefix-only key at

[refcounter/types.go#L9](https://github.com/netbirdio/netbird/blob/e1a24376a/client/internal/routemanager/refcounter/types.go#L9).

  ## Stack

  <!-- branch-stack -->

  ### Checklist
  - [x] Is it a bug fix
  - [ ] Is a typo/documentation fix
  - [ ] Is a feature enhancement
  - [ ] It is a refactor
  - [x] Created tests that fail without the change (if possible)

> By submitting this pull request, you confirm that you have read and
agree to the terms of the [Contributor License
Agreement](https://github.com/netbirdio/netbird/blob/main/CONTRIBUTOR_LICENSE_AGREEMENT.md).

  ## Documentation
  Select exactly one:

  - [ ] I added/updated documentation for this change
  - [x] Documentation is **not needed** for this change (explain why)

Internal client-side routing fix. No public API, CLI, or config change —
only the WireGuard AllowedIPs hand-off when overlapping-prefix networks
are removed.

  ### Docs PR URL (required if "docs added" is checked)
  Paste the PR link from https://github.com/netbirdio/docs here:

  N/A

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<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit

* **Bug Fixes**
* Improved routing behavior when multiple peers share the same Allowed
IP by making Allowed IP reference tracking peer-aware.
* Allowed IPs now correctly decrement using the active peer key and
transfer to another surviving active peer when the current peer is
removed.
* Prevented stale routing and incorrect reference cleanup during route
and DNS-driven teardown.

* **Tests**
* Added/extended coverage for peer handoffs, repeated references,
non-active peer removal, flushing behavior, and self-healing after swap
add/remove failures.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
2026-07-28 14:10:58 +09:00
Zoltan Papp
b6cd8944b1 [client] Fix nil context panic in iOS dynamic route resolver (#6848)
## Describe your changes

getIPsFromResolver passed a nil context to ExchangeWithFallback, which
net.Dialer.DialContext rejects with panic("nil context"). On iOS this
crashed the whole network extension (SIGABRT) ~2 seconds after connect
whenever the network map contained a domain-based (dynamic) route, as
the resolver goroutine panicked on its first DNS query.

Passing nil used to be a documented input of ExchangeWithFallback ("If
the passed context is nil, this will use Exchange instead of
ExchangeContext") since #3632. 9ed2e2a5b (#5971) removed the nil-context
branch, but this iOS-only caller was not updated — it never fails CI
since route_ios.go only builds with GOOS=ios. Broken since v0.71.1.

Pass a context bounded by the existing dialTimeout instead, matching the
dnsinterceptor pattern (context.Background() + timeout).

Captured panic (netbird.err):
  panic: nil context
  net.(*Dialer).DialContext -> miekg/dns ExchangeContext ->
nbdns.ExchangeWithFallback(nil, ...) ->
dynamic.(*Route).getIPsFromResolver
  route_ios.go:35


## Issue ticket number and link

## Stack

<!-- branch-stack -->

### Checklist
- [x] Is it a bug fix
- [ ] Is a typo/documentation fix
- [ ] Is a feature enhancement
- [ ] It is a refactor
- [ ] Created tests that fail without the change (if possible)
- [ ] This change does **not** modify the public API, gRPC protocols,
functionality behavior, CLI / service flags, or introduce a new feature
— **OR** I have discussed it with the NetBird team beforehand (link the
issue / Slack thread in the description). See
[CONTRIBUTING.md](https://github.com/netbirdio/netbird/blob/main/CONTRIBUTING.md#discuss-changes-with-the-netbird-team-first).

> By submitting this pull request, you confirm that you have read and
agree to the terms of the [Contributor License
Agreement](https://github.com/netbirdio/netbird/blob/main/CONTRIBUTOR_LICENSE_AGREEMENT.md).

## Documentation
Select exactly one:

- [ ] I added/updated documentation for this change
- [x] Documentation is **not needed** for this change (explain why)

### Docs PR URL (required if "docs added" is checked)
Paste the PR link from https://github.com/netbirdio/docs here:

https://github.com/netbirdio/docs/pull/__

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<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit

* **Bug Fixes**
* Fixed iOS dynamic DNS resolution by ensuring DNS queries use a proper
resolver context instead of a nil one.
* Improved DNS resolution reliability by propagating
cancellation/timeouts through all domain IP lookups, including fallback
system resolver queries.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
2026-07-21 13:37:29 +02:00
Viktor Liu
205ebcfda2 [management, client] Add IPv6 overlay support (#5631) 2026-05-07 11:33:37 +02:00
Viktor Liu
d71a82769c [client,management] Rewrite the SSH feature (#4015) 2025-11-17 17:10:41 +01:00
Viktor Liu
1d5e871bdf [misc] Move shared components to shared directory (#4286)
Moved the following directories:

```
  - management/client → shared/management/client
  - management/domain → shared/management/domain
  - management/proto → shared/management/proto
  - signal/client → shared/signal/client
  - signal/proto → shared/signal/proto
  - relay/client → shared/relay/client
  - relay/auth → shared/relay/auth
```

and adjusted import paths
2025-08-05 15:22:58 +02:00
Viktor Liu
77ec32dd6f [client] Implement dns routes for Android (#3989) 2025-07-04 16:43:11 +02:00
Viktor Liu
03f600b576 [client] Fallback to TCP if a truncated UDP response is received from upstream DNS (#3632) 2025-04-08 13:41:13 +02:00
Viktor Liu
87e600a4f3 [client] Automatically register match domains for DNS routes (#3614) 2025-04-07 15:18:45 +02:00
Maycon Santos
c02e236196 [client,management] add netflow support to client and update management (#3414)
adds NetFlow functionality to track and log network traffic information between peers, with features including:

- Flow logging for TCP, UDP, and ICMP traffic
- Integration with connection tracking system
- Resource ID tracking in NetFlow events
- DNS and exit node collection configuration
- Flow API and Redis cache in management
- Memory-based flow storage implementation
- Kernel conntrack counters and userspace counters
- TCP state machine improvements for more accurate tracking
- Migration from net.IP to netip.Addr in the userspace firewall
2025-03-20 17:05:48 +01:00
Zoltan Papp
96de928cb3 Interface code cleaning (#3358)
Code cleaning in interfaces files
2025-02-21 10:19:38 +01:00
Viktor Liu
ddc365f7a0 [client, management] Add new network concept (#3047)
---------

Co-authored-by: Pascal Fischer <32096965+pascal-fischer@users.noreply.github.com>
Co-authored-by: bcmmbaga <bethuelmbaga12@gmail.com>
Co-authored-by: Maycon Santos <mlsmaycon@gmail.com>
Co-authored-by: Zoltan Papp <zoltan.pmail@gmail.com>
2024-12-20 11:30:28 +01:00
Zoltan Papp
fd67892cb4 [client] Refactor/iface pkg (#2646)
Refactor the flat code structure
2024-10-02 18:24:22 +02:00
Bethuel Mmbaga
ff7863785f [management, client] Add access control support to network routes (#2100) 2024-10-02 13:41:00 +02:00
Zoltan Papp
5ac6f56594 [relay] Replace the iface to interface (#2473)
Replace the iface to interface
2024-08-29 21:31:19 +02:00
pascal-fischer
501fd93e47 Fix DNS resolution for routes on iOS (#2378) 2024-08-02 18:43:00 +02:00
Viktor Liu
57624203c9 Allow route updates even if some domains failed resolution (#2368) 2024-08-01 18:38:19 +02:00
Viktor Liu
628673db20 Lower retry interval on dns resolve failure (#2176) 2024-06-24 11:55:07 +02:00
Maycon Santos
4fec709bb1 Release 0.28.0 (#2092)
* compile client under freebsd (#1620)

Compile netbird client under freebsd and now support netstack and userspace modes.
Refactoring linux specific code to share same code with FreeBSD, move to *_unix.go files.

Not implemented yet:

Kernel mode not supported
DNS probably does not work yet
Routing also probably does not work yet
SSH support did not tested yet
Lack of test environment for freebsd (dedicated VM for github runners under FreeBSD required)
Lack of tests for freebsd specific code
info reporting need to review and also implement, for example OS reported as GENERIC instead of FreeBSD (lack of FreeBSD icon in management interface)
Lack of proper client setup under FreeBSD
Lack of FreeBSD port/package

* Add DNS routes (#1943)

Given domains are resolved periodically and resolved IPs are replaced with the new ones. Unless the flag keep_route is set to true, then only new ones are added.
This option is helpful if there are long-running connections that might still point to old IP addresses from changed DNS records.

* Add process posture check (#1693)

Introduces a process posture check to validate the existence and active status of specific binaries on peer systems. The check ensures that files are present at specified paths, and that corresponding processes are running. This check supports Linux, Windows, and macOS systems.


Co-authored-by: Evgenii <mail@skillcoder.com>
Co-authored-by: Pascal Fischer <pascal@netbird.io>
Co-authored-by: Zoltan Papp <zoltan.pmail@gmail.com>
Co-authored-by: Viktor Liu <17948409+lixmal@users.noreply.github.com>
Co-authored-by: Bethuel Mmbaga <bethuelmbaga12@gmail.com>
2024-06-13 13:24:24 +02:00