Three pieces, each verified on Android across WiFi/cellular switches:
- A sweep-aware backoff wrapper: the first retry after a disconnect
that follows a recent network-change mark comes after 200ms instead
of the randomized [0..1.6s] interval. Any other failure keeps the
unchanged spread, so the clients of a restarted server still scatter
their reconnects.
- The retry sleep wakes on OS network availability transitions
(nbgrpc.Retry): a disconnect that precedes the offline flag by a few
milliseconds no longer sleeps blindly through the recovery - the
loop parks on the netstate gate and resumes the moment the network
returns.
- The connection state is re-checked after WaitForStateChange: a dial
settling in Ready proceeds immediately instead of burning another
backoff round on an already-usable channel.
Measured after a network switch: management and signal recover in
270-470ms deterministically, down from a 312-1593ms lottery.
Stamp every registered connection and in-flight dial with a network
generation, bumped by MarkNetworkChange, which replaces the immediate
full sweep with one delayed by a configurable 500ms. The sweep then
cuts only registrations older than the last change: subsystems that
redialed on their own hold fresh-generation connections and survive,
so the callers no longer need cancellation logic around the sweep.
A connection inherits its dial's generation, because the socket was
bound to the network that was default when the dial started.
This fixes the sweep being cancelled by the engine's management-level
reconnect while the relay was still down, and lets the mobile
notifiers shrink to plain forwarders.
Replace the fixed 1.5s pre-dial sleep with a wait driven by the OS
availability verdict: while online only a 200ms settle window is spent
(the offline flag lands a few milliseconds after the disconnect that
triggered the reconnect), and while offline the guard waits for the
network to return, bounded by the same 1.5s budget as before. Without
an injected netState the behavior is unchanged.
Measured on Android: relay recovery after a network switch drops from
1.7-1.9s to under 500ms after the cut.
Rename ClientOption to Option in the management and signal client
packages so callers do not repeat the package name, and silence nilerr
on the offline-wait path where a cancelled context means shutdown
rather than a retryable failure.
e2e/harness documents itself as feature-agnostic, but three details
assumed the caller lives in this repo, so the terraform provider's
acceptance suite would otherwise carry a second harness for the same
product.
repoRoot took the first module root above the working directory as the
Docker build context, which from another module is the caller's own
root, with no combined/Dockerfile.multistage in it. It now requires that
ancestor to be this module, and otherwise asks the go tool for the
source: for a dependent, the extracted directory of the version it pins,
so the server matches the client library it was compiled against. That
lookup uses -mod=readonly, since automatic vendor mode otherwise reports
an empty Dir.
Geolocation was disabled unconditionally. Agent-network ingest does not
use it, but location-based posture checks need the database, and a rule
management cannot evaluate fails rather than passing.
StartClient pinned one network alias and set no hostname, so a second
agent could not start and a peer's name was arbitrary. Management
records that hostname, making it the peer's name in the API.
The client entrypoint is copied with an explicit mode: git tracks it
100755, but the module cache extracts 0444, so a dependent's build
produced a container exiting with "permission denied".
Adds CombinedOption, WithGeolocation, WithServerEnv, ClientOption and
WithClientName.
The effective state was computed under serverStateLock but published after
releasing it, so two transitions could reorder between compute and notify
and leave the listener on a state the notifier had already superseded,
e.g. NoNetwork surviving after the network came back.
Hold a publish lock across compute and notify on every publishing path.
- Align default names and reuse same environment variables
- With the uploads now targeting the same stable/yum paths as the GTK4
packages, two packages named netbird-ui with the same version and arch
would collide in the repo indexes. Give the GTK3 variant its own
package name and mark the two as conflicting alternatives.
---------
Co-authored-by: Zoltan Papp <zoltan.pmail@gmail.com>
The listener adapter introduced with the network state work turned a nil
listener into a non-nil peer.Listener holding a nil delegate, so the
notifier's nil check passed it through and setListener panicked on its
immediate OnAddressChanged callback. EngineRunner already forwards null,
so the path is reachable.
Drop the listener instead when it is nil, on Android and iOS alike.
pollUntil span a goroutine that looped forever when the condition never
held, which is exactly the path the test takes when it fails. Pass the
test context in and give up when it is done.
The connection and dial registries keyed on a bare uint64, which says
nothing about what the number identifies. Introduce sweepID so the maps,
the counter and the id fields state their intent. No behavior change.
Ticks taken while the OS reported no network were skipped, but they still
advanced the exponential backoff, so a peer could be tens of seconds from its
next attempt by the time connectivity returned. Recovery then depended on a
signal or relay event, which never arrives when both stayed up across the
outage, e.g. a short airplane mode toggle over Wi-Fi. A peer parked in ICE
hourly mode stayed there for the same reason.
React to the offline-to-online transition directly: re-arm the reconnect
ticker and reset the ICE retry state, so the peer retries at once. Add
netstate.Changed for callers that own a select loop and cannot block in Wait.
Move the Dial type and its Ctx/Release methods above the Sweeper in
netsweep.go, and relocate SetNetworkAvailable / NotifyNetworkChange below
GetTunSettings in the Android binding. Pure code moves, no behavior change.
WrapDialContext and WrapConn registered the dial and the connection
independently, so a sweep landing between the dial finishing and WrapConn
cancelled only the dial registration: the connection dialed on the old
network entered the fresh registry and survived the network change.
Replace the pair with a Dial handle. Sweep marks pending dials under the
sweeper mutex, and WrapConn decides under the same mutex: a swept dial's
connection is closed and ErrSwept returned, so the caller redials on the
new network; otherwise the connection transfers to the registry with no
window in between.
connPair closed the accepted connection right after the handshake, so the
reads in TestSweepClosesRegisteredConns failed on the peer's own close
rather than on the sweep. The test passed even with Sweep's close loop
removed. Hold the peer until cleanup so the read errors come from Sweep.
sweptConn embeds net.Conn, so it does not promote Protocol() from the
concrete relay connection. Asserting transportConn on the wrapper always
failed and left c.transport empty. Read the transport off the dialed
connection first, then wrap it.
People who only ever reach private services through the reverse proxy were
invisible to activity accounting. Active users are counted from user.LastLogin
or from the LastSeen of a peer they own, and neither column was written on the
proxy paths — so a person signing in via SSO to a proxied service, or a peer
serving one over the mesh, never showed up in the 24 hour numbers.
Both writes now happen where the proxy already authenticates:
- GenerateSessionToken stamps LastLogin after the session token is signed,
the same column and the same way the dashboard and device login paths do.
- ValidateTunnelPeer stamps the calling peer's LastSeen, the column its owner
activates through.
The policy lives in a new reverseproxy/activity manager rather than in the gRPC
service, matching the module layout the other reverse proxy domains use. It
skips what can never count — service users, embedded proxy peers and WASM
clients — and throttles peer writes to once an hour, well inside the window
accounting asks about and far above the proxy's five minute tunnel cache.
The peer write is a single indexed UPDATE that touches only
peer_status_last_seen. Connected and SessionStartedAt are left alone so the
session-ownership fencing MarkPeerConnectedIfNewerSession relies on is never
disturbed, and the timestamp comes from the database clock rather than the
caller, for the same reason the other status writers take it from there. The
caller's cutoff travels into the statement's WHERE, so concurrent requests for
one peer collapse into a single write instead of each acting on its own stale
read, and a peer that was never seen — NULL last seen, since Status is an
embedded pointer — still records its first activity.
Nothing outside the reverse proxy changes behaviour: the only addition
elsewhere is the RefreshPeerLastSeen store method the manager calls.
On a network switch (e.g. cellular to WiFi) the management, signal and
relay sockets stay bound to the old network and look alive until the OS
tears them down — measured at 5 seconds of dead air on Android, while
the UI kept claiming Connected. The Android client papered over this
with a full engine restart, paying for it with a torn-down TUN device
and discarded peer state.
Introduce client/netsweep: connections register on dial and deregister
on close, and a sweep closes everything registered while aborting
in-flight dials through sweep-cancellable dial contexts. The aborted
dials matter: a relay dial started on the dying network would otherwise
hold the reconnect loop hostage for the QUIC handshake timeout. After a
sweep every failure surfaces as an ordinary read/write error and the
existing retry loops redial immediately on the new network.
The sweeper reaches the three long-lived connections through the same
options that carry the netstate gate: a gRPC dial option wraps the
management and signal transports (reconnects included), and the relay
client wraps its connection in one place for the picker, the guard and
foreign relays alike. Everything is nil-safe; platforms that inject no
sweeper are untouched.
Mobile clients expose the sweep as NotifyNetworkChange. Measured on
Android against the engine restart it replaces: recovery in 1.6s
instead of 3.2s, no Disconnected flash, and the TUN device, WireGuard
config and peer state survive.
Adding OnStateChanged to the gomobile interface forces every Swift
implementation to grow the method before the app builds again. Drop it
from the iOS binding for now — the adapter satisfies the internal
listener with a no-op and the legacy per-state callbacks keep firing —
so the app upgrades on its own schedule. The state constants stay
exported for that follow-up.
On mobile the client kept dialing management, signal, relay and peer
connections while the device had no usable network at all (airplane
mode), burning battery for attempts that cannot succeed. Stopping the
engine is not an option: tearing it down destroys the TUN device, and
traffic can leak outside the tunnel until it is rebuilt.
Add client/netstate, a small gate the platform feeds from its own
connectivity callbacks. Every reconnection loop waits on it instead of
retrying blindly, and resets its backoff when the network returns so
recovery is immediate. The state is injected through functional options
and consumers hold a *State that may be nil, so every platform that does
not report availability behaves exactly as before.
The relay quick-reconnect rechecks availability after its 1.5s wait: the
disconnect that triggers it is usually the first symptom of the network
going away, so the flag typically arrives while it sleeps.
Report the suspension to the UI as well. peer.Listener grows
OnStateChanged with a typed ClientState, re-exported across the gomobile
boundary as integer constants, and the notifier maps Connecting to a new
NoNetwork state while the OS reports no network, so mobile clients can
show "no network available" instead of a misleading "connecting".
Finally, exit the client retry loop cleanly when its context is
cancelled. backoff.WithContext surfaces the bare context error, which
callers could not distinguish from a real failure — on Android that
turned an engine restart into an unrecoverable error.
At proxy connect time, the declared cluster address is validated for
shape and checked for availability (`IsClusterAddressAvailable`), and
from then on the declaration is what routes the cluster's mappings to
the connection. Deployments that embed management through the
integrations seam may need a policy on that claim — deciding which
credential is allowed to declare which address.
This adds an optional `ProxyConnectAuthorizer` hook on
`ProxyServiceServer`, following the pattern of the existing `Set*` seams
(`SetServiceManager`, `SetAgentNetworkSynthesizer`,
`SetAgentNetworkLimitsService`, `SetProxyController`):
- A nil-able interface field plus `SetProxyConnectAuthorizer`, guarded
by the existing mutex.
- One call at the end of `validateProxyConnect`, so both
`GetMappingUpdate` and `SyncMappings` are covered by a single site.
- **Nothing installs it by default** — with the hook unset (always, in
this repo), behavior is byte-for-byte unchanged, which the tests pin.
Design details:
- The authorizer runs **last** — after input validation and the
availability check — and **outside** the account-scoped branch, so
management-wide tokens and token-less connects are also presented to it
rather than bypassing policy.
- The authorizer receives the presented `*types.ProxyAccessToken` (nil
when none), the proxy ID, and the declared address. Everything it needs
is already in the request/context; no proto or schema change.
- A plain error from the authorizer surfaces as `PermissionDenied`,
keeping an authorization rejection distinguishable from the
`AlreadyExists` used for address conflicts in proxy logs. A status error
passes through unchanged so implementations can pick their own code.
Store the per-account gateway endpoint as {domain, proxy_address} with a
global unique index on the full hostname; dedicated = (domain ==
proxy_address). Bootstrap becomes an explicit POST carrying exactly one
of proxy_address (server allocates an adjective-noun label beneath it)
or endpoint (claimed verbatim, address-first); provider create loses its
bootstrap side effect. PUT is a full replace with every field required —
the immutable identity fields must be echoed unchanged and a mismatch is
rejected with 422. A guarded DELETE releases the endpoint: refused with
412 while providers exist or a proxy is actively serving the endpoint
hostname (matched case-insensitively); re-creating bootstraps fresh. A
self-addressed pin excludes its address from the account's cluster allow
list, and the live mapping update path now addresses the serving proxy
from the synthesized service. Existing rows are migrated on all three
store engines.
## Describe your changes
The native_webview2loader build tag embedded Microsoft's
WebView2Loader.dll via //go:embed. Those DLLs are gitignored in the fork
and go mod vendor resolves embed patterns regardless of build
constraints, so vendoring the module failed on the missing files when
packaging for openSUSE.
The fork now removes that branch along with the go-winloader dependency,
which drops out of the module graph here. The default GoWebView2Loader
path is unaffected.
## Issue ticket number and link
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Required for anything that changes behavior. Link the issue (or the
validated
discussion it came from) that the NetBird team already agreed on. See
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## Stack
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### 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)
- [ ] I ran and tested this change locally — I did not rely on CI to
find out whether it works
- [ ] This PR has a single purpose (not a fix + refactor + feature in
one)
- [ ] This change is a trivial fix, **OR** it links an issue the NetBird
team agreed on beforehand. Changes to the public API, gRPC protocols,
functionality behavior, CLI / service flags, or new features always need
that agreement first. See
[CONTRIBUTING.md](https://github.com/netbirdio/netbird/blob/main/CONTRIBUTING.md#ticket-first-pr-second).
> 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:
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<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
* **Chores**
* Updated the application framework revision.
* Removed an unused dependency.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
## Describe your changes
The UI shells out to xdg-open to launch the external browser for the SSO
verification page, which the embedded webview cannot open inline, and to
reveal the debug bundle in the file manager.
client/ui/build/linux/nfpm/nfpm.yaml lists xdg-utils for every package
format, but the released packages are built from the goreleaser configs,
where it was missing: the GTK and WebKitGTK dependencies carried over
and xdg-utils did not. Add it to all four nfpm dependency lists.
## Issue ticket number and link
<!--
Required for anything that changes behavior. Link the issue (or the
validated
discussion it came from) that the NetBird team already agreed on. See
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## 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)
- [ ] I ran and tested this change locally — I did not rely on CI to
find out whether it works
- [ ] This PR has a single purpose (not a fix + refactor + feature in
one)
- [ ] This change is a trivial fix, **OR** it links an issue the NetBird
team agreed on beforehand. Changes to the public API, gRPC protocols,
functionality behavior, CLI / service flags, or new features always need
that agreement first. See
[CONTRIBUTING.md](https://github.com/netbirdio/netbird/blob/main/CONTRIBUTING.md#ticket-first-pr-second).
> 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/__
<!-- This is an auto-generated comment: release notes by coderabbit.ai
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## Summary by CodeRabbit
* **Bug Fixes**
* Added required desktop integration support to Debian and RPM packages.
* Ensured GTK3 packages include the same runtime support for opening
links and files through the system.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
A user in the Pending Approval state could complete SSO and reach any
SSO-protected reverse proxy service distributed to a group they belong
to, including the All Users group. The reverse proxy authorization path
checked the session token signature, that the user exists, that the
user's account matches the service's account, and group membership —
never the user's account status. The REST API (`permissions/manager.go`)
and peer registration both gate on that state, but the proxy gRPC
service does not go through the permissions manager, so neither gate
applied. A pending user is persisted as blocked and pending approval, so
blocked users reached those services the same way.
`ValidateSession` now denies on account status, reporting
`pending_approval` or `user_blocked` so the proxy access log and the
denied page carry the cause rather than a generic refusal.
`GenerateSessionToken` refuses to mint a token for such a user at all,
so the browser never receives a session cookie and the OIDC callback can
tell the user why instead of showing "Service configuration error".
`ValidateUserGroupAccess` and `ValidateTunnelPeer` close the same gap;
for the tunnel path this covers a user blocked after their peer was
registered, since peer group membership alone kept mesh-origin access
open.
A single helper produces both the denied reason for the RPC responses
and the sentinel error for the error-returning callers, so the four
entry points cannot drift apart. A user the store cannot resolve is
denied rather than passed through.
One thing deliberately left out: session cookies are validated locally
by the proxy against the service public key with no management
round-trip, so a cookie issued before a user is blocked stays valid
until it expires (24h by default). That is a revocation-propagation
problem rather than this authorization gap, and every option for it
(per-request validation with a cache, short-lived tokens with refresh,
push-based revocation) changes the proxy hot path or the
proxy/management protocol. Worth its own ticket.
## Describe your changes
`recordConnectionMetrics` mapped only `conntype.Relay` to `relay` and
let a `default` branch
record everything else as `ice`. That silently included `ICETurn` — an
ICE connection through
a TURN server, which
[`conn.isRelayed`](https://github.com/netbirdio/netbird/blob/main/client/internal/peer/conn.go#L788-L795)
itself counts as relayed — and `None`, the transient state set when the
relay drops
([conn.go:632](https://github.com/netbirdio/netbird/blob/main/client/internal/peer/conn.go#L632))
or the peer state is reset
([conn.go:757](https://github.com/netbirdio/netbird/blob/main/client/internal/peer/conn.go#L757)).
Both were reported as direct peer-to-peer, so the `ice` share overstated
direct connections on
every platform.
The mapping now lists every priority explicitly and emits `ice_p2p`,
`ice_turn`, `relay` or
`unknown`. The new values deliberately do not reuse `ice` to avoid
ambuguity.
## Issue ticket number and link
No public issue. Found while reviewing the first production sample of
client metrics: 38% of iOS
connection events were tagged `ice` on a platform that forces relay by
default, which traced back
to the `default` branch at
[client/internal/peer/conn.go#L963-L968](https://github.com/netbirdio/netbird/blob/main/client/internal/peer/conn.go#L963-L968).
## Stack
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### 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 metrics documentation only, in
`client/internal/metrics/infra/README.md`: the four
`connection_type` values with their derivation, and a note that pre-fix
`ice` samples are not
comparable with `ice_p2p`. No public API, CLI or configuration change,
so no netbirdio/docs PR.
### Docs PR URL (required if "docs added" is checked)
Paste the PR link from https://github.com/netbirdio/docs here:
N/A
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
## Summary by CodeRabbit
* **New Features**
* Connection metrics now distinguish direct peer-to-peer, TURN-assisted,
relay, and unknown connection types.
* Metrics include clearer connection and peer identification details.
* **Documentation**
* Updated connection timing metric values, traffic semantics, priority
behavior, and historical data guidance.
* **Bug Fixes**
* Unset or unrecognized connection priorities are no longer incorrectly
classified as peer-to-peer.
* Unknown-transport metrics are skipped to prevent misleading connection
data.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
The migration wizard detected the community deployment only by the
Docker Hub image prefix (netbirdio/netbird-server), so deployments
installed from the ghcr.io mirror failed with "Could not find a service
running netbirdio/netbird-server*".
This broadens the server and dashboard detection to also accept
ghcr.io/netbirdio/... images. The regexes are anchored at the tag/digest
separator so Enterprise images (netbird-server-cloud, dashboard-cloud)
are still rejected, an already-migrated deployment must not be detected
as a community one. Error messages updated to mention both forms.
## Describe your changes
The Conn struct is reused across lazy-connection deactivate/activate.
Close
cancels the WireGuard watcher (via wgWatcherCancel, and ctxCancel also
tears
down its context) but left conn.wgWatcher pointing at the stopped
instance.
enableWgWatcherIfNeeded skips while conn.wgWatcher is non-nil, so the
next Open
never started a fresh watcher: once a lazy connection had idled and
woken, the
peer ran with no watcher at all — no WireGuard handshake-timeout
detection and
none of the escalation that depends on it.
Clear conn.wgWatcher and conn.wgWatcherCancel in Close so the next Open
re-arms
a fresh watcher.
## Issue ticket number and link
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Required for anything that changes behavior. Link the issue (or the
validated
discussion it came from) that the NetBird team already agreed on. See
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## Stack
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### 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)
- [ ] I ran and tested this change locally — I did not rely on CI to
find out whether it works
- [ ] This PR has a single purpose (not a fix + refactor + feature in
one)
- [ ] This change is a trivial fix, **OR** it links an issue the NetBird
team agreed on beforehand. Changes to the public API, gRPC protocols,
functionality behavior, CLI / service flags, or new features always need
that agreement first. See
[CONTRIBUTING.md](https://github.com/netbirdio/netbird/blob/main/CONTRIBUTING.md#ticket-first-pr-second).
> 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/__
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* Improved connection cleanup by fully releasing WireGuard watcher
resources when a connection closes.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
The community and enterprise bootstrap scripts now generate a dedicated
`server.auth.sessionCookieEncryptionKey` from 32 random bytes for fresh
installations.
The key is Base64-encoded, persisted independently from the datastore
encryption key, and reused from the generated configuration after
restarts.
The community script now also creates `config.yaml` with mode `0600`
before writing it, matching the existing enterprise behavior.
The server already supports the session cookie encryption key, but the
bootstrap scripts left it unset.
This adds defense-in-depth for newly generated deployments while
preserving the existing server-side nonce validation.
Because this only changes newly generated configuration, existing
installations and sessions are unchanged.
A focused regression test checks key presence, decoded length,
separation from the datastore key, YAML placement, and file mode for
both scripts.
It is included in the infrastructure workflow.
## Describe your changes
The relay client's reconnect backoff was constructed without a
`RandomizationFactor`
([guard.go:156-165](https://github.com/netbirdio/netbird/blob/main/shared/relay/client/guard.go#L156-L165)),
so it kept the zero value: every client that lost the same relay server
retried on the identical 2/4/8/16/32/60, potentially in waves.
It was the only exponential backoff in the codebase without a
randomization factor.
Use `backoff.DefaultRandomizationFactor`, as random factor.
## Issue ticket number and link
No public issue. Found while reviewing the relay reconnect path for the
client-metrics review:
22k relay reconnection events in 24h, and the shared transport's own
retry schedule was
identical across all clients.
## 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 retry-timing change with no user-visible surface: no CLI flag,
configuration option
or API field is added or altered, and the mean reconnect delay is
unchanged.
### Docs PR URL (required if "docs added" is checked)
Paste the PR link from https://github.com/netbirdio/docs here:
N/A
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **Bug Fixes**
* Improved reconnect timing to distribute repeated connection attempts
more evenly and reduce synchronized retry spikes.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
## Describe your changes
A group could be deleted while a reverse proxy service still referenced
it, silently breaking the service's access control: private services
list groups in `access_groups` as the peer allowlist, and SSO bearer
auth distributes tokens to `distribution_groups`.
Group deletion now runs through the same linkage validation as routes,
policies, and agent network policies: deleting a group that backs a
private service allowlist or an enabled bearer-auth distribution list
fails with a `GroupLinkError` naming the service domain. Disabled bearer
configs and stale `access_groups` on non-private services are inert and
do not block deletion.
Tests cover both linked cases in single and bulk deletion, and pin the
non-blocking cases. The test account seeds decoy services ahead of the
linked ones so the check is proven to scan the full service list.
Block deleting a group referenced as a source group by an agent network
policy, and drop unresolvable groups from synthesised private-service
ACLs. A deleted group survived in agent_network_policies.source_groups
and was carried into the injected in-memory policy, where network-map
assembly resolved it to a nil group and panicked on every proxy peer
sync.
