5 Commits

Author SHA1 Message Date
romanett 9b034f8291 Enable nullable reference types centrally; migrate all unset and annotations-only projects (#4700)
# Description

Nullable reference types are now enabled once, in `common.props`, and
every project in the repository builds warning-clean with them.

**Configuration**
- `<Nullable>enable</Nullable>` lives in `common.props`. All per-project
`<Nullable>` settings are removed: 178 project files (enable,
annotations, and the `disable` in the three Aot test projects).
- 419 per-file `#nullable enable`/`restore` directives and the 4
`#nullable disable` directives are removed.
- Kept on purpose:
- The 5 `<auto-generated>` schema files (`UANodeSet.cs`, `UA Type
Dictionary.cs`, `OPCBinarySchema.cs`, `SecuredApplication.cs`,
`PInvokeHelper.cs`) keep `#nullable enable`. The compiler ignores the
project setting in generated code, so the directive is required there.
- `tests/Opc.Ua.Interop.LegacyPeer` keeps `disable`. It builds against
the 1.5.378 packages and does not import the repository props.
- `docs/DeveloperGuide.md` and `.github/copilot-instructions.md` now
describe the central setting.

**Migration** (the 43 unset and 13 annotations-only projects, roughly
10k diagnostics)
- **Production code: annotated at the declarations.** Covers
`tools/Opc.Ua.SourceGeneration.Core`, `src/Opc.Ua.Lds.Server` and the
LDS sample.
- Members, parameters and returns are nullable where null actually
flows.
- Null-check helpers carry `[NotNullWhen]` (`IsNull`, `IsValidXmlName`,
`IsMethodTypeDesign`).
- `CoreUtils.Format`, `Utils.Format`, `ITemplateWriter.WriteLine` take
`params object?[]`. `Template.AddReplacement` takes `string?` (rendering
already skips null replacements).
- `IRegisteredServerStore.RegisterAsync` returns
`Task<RegistrationEntry?>`: it returns null when a registration is
removed.
- Dereferences backed by an invariant (for example, the validated model)
use `!`, so runtime behaviour is unchanged.
- **Behavioural changes in production code** (small, deliberate):
- `NodeSetToModelDesign` throws `InvalidOperationException` when the
file is not a NodeSet. Before, it threw a NullReferenceException on the
next line.
- `ModelDesignValidator` starts its lookup tables empty instead of null.
A redundant `if (m_nodes == null) return;` guard is gone.
- **Test code: minimal annotations.**
  - `?` on values that can be null, `!` where the test asserts non-null.
  - `= null!` for fixture members assigned in SetUp.
- `TryGetStructure<T>(out T? x)` where the inferred `T?` broke the
`IEncodeable` constraint.
- A few redundant `== null` checks on structs (`NodeId`, `ArrayOf<T>`)
folded into the adjacent `IsNull`/`Count` checks.

**Notes for reviewers**
- The diff is large (~1,500 files) but almost entirely mechanical: `?`,
`!` and directive removal. The non-annotation changes are listed above.
- Known follow-up, not done here:
`IModelDesign.Namespaces/TargetNamespace/NamespaceUris` stay
non-nullable even though the validator returns null before it loads a
dictionary. Making them nullable would ripple through every generator
call site.

## Related Issues

- Fixes #4439

## Checklist

- [ ] I have signed the
[CLA](https://opcfoundation.org/license/cla/ContributorLicenseAgreementv1.0.pdf)
and read the
[CONTRIBUTING](https://github.com/OPCFoundation/UA-.NETStandard/blob/master/CONTRIBUTING.md)
doc.
- [ ] I have added tests that prove my fix is effective or that my
feature works and increased code coverage.
- [x] I have added all necessary documentation.
- [x] I have verified that my changes do not introduce (new) build or
analyzer warnings.
- [ ] I ran **all** tests locally using the **UA.slnx** solution against
at least .net **framework** and .net **10**, and all passed.
- [ ] I fixed **all** failing and flaky tests in the CI pipelines and
**all** CodeQL warnings.
- [ ] I have addressed **all** PR feedback received.

The "no new warnings" box covers net10.0 and net48: full non-incremental
builds of `UA.slnx`, `tools/SourceGeneration.slnx`,
`tools/MigrationAnalyzer.slnx` and the Aot test projects finished with 0
warnings and 0 errors under the repository's warnings-as-errors
settings. net9.0 and net8.0 also had no nullable diagnostics, but they
were not rebuilt after the final fixes. Tests have not been run locally
yet.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

---------

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-08 08:48:13 +02:00
Copilot e78c648295 Images CI: publish samples once natively and stop compiling under QEMU (#4679)
# Description

Images CI took 45–100 min per image. The arm64 half of every
`linux/amd64,linux/arm64` build ran `dotnet restore` and `dotnet
publish` in an arm64 SDK container under QEMU. For `refserver`, publish
took 8 min natively for amd64 and 92 min emulated for arm64. On top of
that, every one of the 10 matrix legs recompiled the whole stack.

The output is framework-dependent portable IL, so the compile is now
done once, natively. The image legs only copy files onto the
per-platform runtime base image.

### Dockerfiles (all 10)
- **SDK stage runs on the build platform.** The `build` stage is pinned
to `--platform=$BUILDPLATFORM`. `-p:UseAppHost=false` keeps an x64 app
host out of the arm64 image.
- **New `prebuilt` stage.** It is chosen with a global `ARG
PUBLISH_SOURCE`, which defaults to `build`. Local `docker build` and the
`docker-compose` files are unchanged.
  ```dockerfile
  FROM scratch AS prebuilt
  ARG PUBLISH_DIR=artifacts/docker/publish
  COPY ${PUBLISH_DIR}/ /app/publish/

  FROM ${PUBLISH_SOURCE} AS publish
  ```
- **Pump: final-stage `RUN`s moved to a native stage.** The `sed` on
`openssl.cnf` and the `mkdir`/`chown`/`chmod` steps now run in a
`$BUILDPLATFORM` `layout` stage. The final stage copies `/layout/` to
`/`, so `/app` and `/diag` keep the `$APP_UID:0` owner and `g=u` mode
they had before. `openssl.cnf` therefore comes from the build-platform
base image. It is a plain config file, so it is expected to match
between architectures.

### `docker-image.yml`
- **Single image list.** The image list lives once, in `env.IMAGES`
(image, project, Dockerfile). `discover` emits it as the matrix.
- **New `publish-samples` job.** It runs `dotnet publish` for each
sample sequentially, so shared libraries compile once. It uses the same
options and NBGV version properties as the Dockerfiles and uploads the
output as the `docker-publish` artifact.
- **`build-and-push-image` legs.** Each leg:
  - downloads the artifact;
- builds with `PUBLISH_SOURCE=prebuilt` and
`PUBLISH_DIR=artifacts/docker/publish/<image>`;
  - no longer uses `setup-qemu-action`;
  - is named `build-and-push-image (<image>)`.
- **`images summary`.** It now also fails when `publish-samples` fails.

### Docs
- `ContainerReferenceServer.md` describes the publish-once / copy-only
flow and the build arguments.
- `DeveloperGuide.md` mentions the `publish-samples` job in the Images
CI section.

Expected: one native publish of about 7 min, then 10 parallel
copy-and-push legs of a few minutes each. Not yet confirmed on CI: the
sandbox could not pull MCR base images, so the prebuilt multi-platform
builds were checked against a Debian-based stand-in base, and the
build-from-source path was not built.

## Related Issues

## Checklist

- [ ] I have signed the
[CLA](https://opcfoundation.org/license/cla/ContributorLicenseAgreementv1.0.pdf)
and read the
[CONTRIBUTING](https://github.com/OPCFoundation/UA-.NETStandard/blob/master/CONTRIBUTING.md)
doc.
- [ ] I have added tests that prove my fix is effective or that my
feature works and increased code coverage.
- [x] I have added all necessary documentation.
- [ ] I have verified that my changes do not introduce (new) build or
analyzer warnings.
- [ ] I ran **all** tests locally using the **UA.slnx** solution against
at least .net **framework** and .net **10**, and all passed.
- [ ] I fixed **all** failing and flaky tests in the CI pipelines and
**all** CodeQL warnings.
- [ ] I have addressed **all** PR feedback received.

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: romanett <7413710+romanett@users.noreply.github.com>
2026-10-06 14:21:44 +02:00
Marc Schier 4633aa7a34 Harden HA address-space hydration and replica-consistent NodeIds (#4445)
# Description

Follow-up to #4390 for distributed address-space ownership,
authoritative
hydration, and replica-consistent wire NodeIds. Tracks #4444.

Identity implementation: `a78d59067` (Server policy/lifecycle/adapter
seam) and
`07faf5cfd` (replica identity module, runtime wiring, examples and
proofs).

## Replica identity

- `UseReplicaNodeIdentity` / `ReplicaNodeIdFactory` reserve fixed shared
namespace
indexes before node-manager construction and reuse
`DefaultNodeIdFactory`.
  ApplicationUri and built-in diagnostics/configuration remain local.
- Replicated startup requires an explicit identity contract. Namespace
layout,
  deterministic mode, replica-set identity and writer policy must agree.
Standard factory views, replacement and registration preserve the
policy.
- Active/passive writer-assigned identities are replicated unchanged.
Independent
creation requires stable keys or explicit IDs. Live IDs and retained
tombstones
are reserved before writer allocation; no network/storage call runs in
`New`.
- Protected store descriptors use strong routing, including customized
hybrid
prefixes. Unknown legacy state and empty eventual scans cannot authorize
  automatic adoption. Verified-new hybrid provisioning is explicit.
- Active/active frames compare the descriptor before CRDT merge.
Rejected frames
are not reported as applied; incompatible admission remains at
ServiceLevel 0
  through the standard service-level wiring.
- Shared metadata validation covers type definitions, data types,
references,
permissions, NodeId/ExpandedNodeId/QualifiedName values,
arrays/matrices,
  DataValues and encodeable structures/arguments, without reflection.
- Runtime preparation hydrates retained IDs before replacement routes
publish.
Rebinding keeps the existing store/election or gossip transport/map and
attaches
to the new node-manager sources. Normal node-manager mutations,
including
  AddNodes, reach the cached local-address-space adapter.
- WoT materialization retains the stable configured factory. Samples
expose
genuinely factory-created nodes and a client `--identity` failover
workflow.

## Preserved HA repairs

The published `d99995003` and `79da74f14` fixes remain in place:

- Shared linearizable sequence/lease coordination; no pretend CAS on
CRDT and no
  private counter substituted for shared coordination.
- Strict authoritative record decoding, protected pending reservations,
safe
  snapshot publication and required delta retention.
- Accepted topology state controls authoritative membership; stale
deletion
  cannot remove a newer incarnation.
- Independent subtree attachment tracking and correct disposal of the
final
  snapshot task.
- Values wait for their topology, and parent tombstone horizons prevent
older
  descendant values crossing incarnations.

A new deterministic regression also covers writer hydration preparation:
temporary reconciliation removals must remain inbound application, not
be
recaptured as new shared deletion records.

## Validation

### Review feedback fixes

`3a682155b` addresses the active-node notification, WoT namespace-index
bounds,
and retired-manager XML documentation feedback. The address-space
adapter now
notifies listeners with the registered active node, and both WoT
managers reject
missing/out-of-range namespace indexes before ownership is established.

Targeted feedback validation passes on net10.0 and net48: 8
address-space adapter
cases and 74 WoT cases per framework, plus 17
hydration/gossip/live-client
integration cases on net10.0. The wrong-instance notification and
missing
namespace regressions were reproduced before the fixes.

### Identity implementation evidence

| Selected scope | net10.0 | net48 |
| --- | --- | --- |
| HA repair, identity, metadata, peer admission and real-client
identity/reload fixtures | 215 passed | 215 passed |
| Factory, fluent authoring/import, NodeManagement and address-space
adapter fixtures | 213 passed | 213 passed |
| WoT node-manager fixtures | 68 passed | 68 passed |

- Real UA-TCP clients compare full NodeIds/reference targets across
independent
servers in all four deterministic modes, with different manager/creation
order
and local allocations. Saved IDs work after endpoint failover and
restart.
- Real AddNodes-created IDs remain readable through successive live
manager
replacements in both replication modes, including nodes created after a
reload.
- Two process-level cases start three sample replicas, kill the serving
process,
verify a different serving ServerArray URI, and reuse cached
factory-generated
  IDs for Read and CreateMonitoredItems without remapping or rebrowsing.
- The identity/hydration scenario runs from the actual published win-x64
NativeAOT
  executable in the existing historian companion host.
- The focused writer-recapture regression was observed failing without
its fix,
  then passing. The real reload scenario was additionally repeated while
  diagnosing that race.
- Changed-file formatting/style/analyzers were applied. Existing CA1508,
CA1823,
CA1861 and CA1850 warnings in untouched upstream files were not
suppressed.

The selected checks above do not replace full-solution CI, coverage
gates or
maintainer review, and do not claim that the entire solution or every
native
platform was run. #4444 remains the tracking issue.

## Contract and consistency limits

Fixed identity does not make eventual payload reads linearizable. Hybrid
views
remain non-destructive, use explicit tombstones, and do not infer
empty-store
bootstrap or partition completion from absence. Compacted snapshots
require
authoritative storage. Failed/uncertain reservations require
reconciliation.

There is no automatic namespace-slot allocation, persistent logical-key
mapping
database, live renumbering, legacy-store wipe/adoption, or new hash
algorithm.
Opaque shared structures require a registered codec so their
namespace-bearing
fields can be validated. Application callbacks are still
application-owned.

## Related issues

- Tracks #4444.
- Follow-up to #4390.
- Builds on the merged NodeId factory (#4433), configure/seal (#4442)
and
  lifecycle/import (#4427) integration at `aedd3f738`.

## Checklist

- [ ] I have signed the CLA and read CONTRIBUTING.
- [x] Added targeted regression and integration tests.
- [x] Updated directly related API, HA, migration and sample
documentation.
- [x] Ran scoped formatting and the targeted framework checks listed
above.
- [ ] Full UA.slnx matrix and coverage gates completed.
- [ ] All CI and maintainer review completed.

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 9dbd9527-d818-47a0-984c-fbb1472d3d6b
2026-09-09 13:26:45 +02:00
Marc Schier 7411654c8d Complete OPC UA Part 11 Historical Access (#4390)
# Description

Completes the OPC UA Part 11 Historical Access work requested by #4387
and
the historian framework integration requested by #4400.

The conformance/evidence catalog covers all 37 released UACore 1.05
Historical Access profiles: 15 Server facets and 22 Client facets,
together
with the standard aggregate functions and their conformance units.
Server
facets are advertised only when the resolved providers expose their
required
interfaces and capabilities.

## Server and provider support

- Completes raw, modified, at-time, processed, annotation, structured,
and event history.
- Dispatches best-effort, bulk, and transactional updates with aligned
statuses, old values, diagnostics, and rollback state.
- Supports mixed history-update detail types and batched
structured/annotation operations.
- Uses composite identities and exclusive cursors for same-timestamp
structured, modified, and event values.
- Captures live data and events, installs historical configuration
objects, and emits typed audit payloads.
- Derives aggregate monitoring filters from per-node historian
capabilities and rejects unsupported processed aggregates before
provider dispatch.
- Supports tri-state `Historizing`: set, clear, or preserve
provider-owned state.

## Client support

- Exposes modified values together with `ModificationInfo`.
- Adds event-history reads and event insert/replace/update/delete
operations.
- Adds structured and annotation batching with strict response
validation.
- Shares continuation handling and release-on-abandon across read
families.
- Accepts inherited standard event fields rooted at event subtypes.

## Review hardening

- Registers DI-selected historians before node-manager reconciliation
and capability publication, while preserving provider ownership.
- Uses committed Raft read barriers for linearizable `TryGetAsync` and
`ScanAsync`.
- Keeps claimed continuation state immutable until a fresh successor is
saved, restoring the original after transient failures.
- Uses exact-incarnation compare-and-delete so delayed cleanup cannot
remove a restored same-ID continuation.
- Cleans up indeterminate initial and replacement saves, and propagates
shutdown cancellation through cleanup resolution.
- Preserves legacy continuation envelopes/cursors and distinct
annotation parent/property identities.
- Deletes every structured entry at a requested timestamp and uses the
complete modified-history ordering tuple.
- Shares native/fallback at-time and AnnotationCount calculations,
including reverse endpoints and cross-framework fractional intervals.
- Primes modified aggregate items before buffered live delivery and
deduplicates history/live overlap using provider-specific identities.
- Keeps committed Modify results successful while reporting priming
failures
  through the monitored item's notification queue.
- Keeps protected-notification state live-only for queues larger than
one.
Queue size one retains the newest notification without pinning errors or
transferring priority during resizing. Durable restore retains ordinary
definitions, last values/errors, and raw queues without recreating
priority.
- Isolates aggregate calculation, modification preparation, and
historical/live
handoff in `AggregationFilterHandler`, retaining existing
provider/factory
wiring and supported past-start behavior. The larger-queue protection
policy
  is unchanged pending the open review discussion.
- Uses one `IMonitoringFilter` owner for protocol filters or the
aggregation
handler, eliminating parallel effective-filter storage and retaining the
current definition during preparation. The original client filter stays
distinct.
- Integrates current master, retaining custom monitored-item creation
decisions and per-node history callbacks.

## Redundant-server alignment and samples

- Adds a protected shared historian with immutable segments, manifest
CAS publication, writer fencing, and restart recovery.
- Persists portable continuation state before exposing it to clients and
transfers ownership during mirrored-session takeover.
- Rejects eventual-consistency and active/active multi-writer historian
configurations rather than silently degrading.
- ReferenceServer and ConsoleReferenceClient demonstrate discovery,
paging, raw/modified/at-time/processed reads, annotation/structured
CRUD, event capture, and event CRUD.
- RedundantServer and RedundantClient demonstrate active/passive
history, continuation recovery after replica termination, and
post-promotion writes.
- Updates Historical Access, High Availability, profile, migration, and
sample documentation.

## Compatibility

- New 2.0 collection boundaries use `ArrayOf<T>` and public byte
payloads use `ByteString`.
- Removes the legacy public virtual
`SamplingGroupManager.CreateMonitoredItem` /
`ModifyMonitoredItem` entry points and protected creation factory, as
agreed
  in review. Migration guidance points to the monitored-item manager and
  construction-decision APIs.
- Retains established persisted formats and current write layouts.
Retired interim
notification-state formats (sample v2 / shared v4) are rejected, as
agreed in review.
- Keeps the historian integration compatible with .NET Framework and
NativeAOT.

## Validation

### Latest CI source repair

`73c619435` forwards the existing cancellation token at both
predefined-node
creation calls in the PR-added History event fixture. The merged
lifecycle
overload exposed these two CA2016 errors, which blocked History jobs,
the
solution build matrix, and CodeQL on GitHub and Azure. The exact
compiler
failure was reproduced locally; the repaired fixture passes 4/4
integration
cases on net10.0 and 4/4 on net48 with clean scoped diagnostics. No
assertions,
tests, coverage thresholds, or CI configuration were weakened.

The repaired History jobs on Linux/macOS and all four Azure solution
builds
now pass. The Windows all-TFM GitHub job instead lost its hosted
runner's
connection; no build log was recoverable, and GitHub recorded a
runner-loss
annotation rather than a compiler/test diagnostic. One unchanged retry
was
requested. Remaining checks are monitored with
`gh pr checks --watch --fail-fast --interval 30`; CI is not yet reported
as green.

### Latest base integration

`bd52e5fea` merges upstream `master` at `da7412c42`. The lifecycle
conflict
retains upstream's shared cancellation-aware registration helper and the
historian behavior. The hosted-historian fixture forwards its existing
token
to the new lifecycle overload. GDS project renames and all three AOT
test
hosts are retained, with their project references resolving after the
merge.

| Integrated scope | net10.0 | net48 |
| --- | --- | --- |
| Server lifecycle, fluent authoring/import, historian, monitored-item
and hosting regressions | 732 passed | 732 passed |
| NodeState lifecycle regressions | 216 passed | 216 passed |
| Automatically merged Raft client fixtures | 28 passed | 28 passed |

No selected tests failed or were skipped. The manually resolved files
pass
scoped formatting/analyzer checks. One CA1861 warning remains in the
incoming
`NodeSetImportIntegrationTests.cs`; that file is byte-identical to
upstream
master and was not rewritten or suppressed during integration.

### Latest feedback follow-up

`102954eaa` replaces split filter references with the shared
`IMonitoringFilter`
contract implemented by protocol filters and `AggregationFilterHandler`.
Targeted server regressions pass **103/103 on net10.0 and 103/103 on
net48**;
scoped formatting/analyzers are clean, and the updated XML-documentation
inventory has zero gaps across 188 non-generated PR C# files.

`93c5b5db8` renames `AggregationFilterHandler`, makes it the owner of
the
server-revised aggregate filter while preserving the original client
filter,
and removes the retired interim notification-state readers. Server
regressions
pass **101/101** and shared-store regressions **64/64**, on both net10.0
and
net48, with no failures or skips. Runtime-file formatting/analyzers are
clean.

`5ccf45630` completes the public/internal XML-documentation sweep. The
Roslyn
inventory finds zero undocumented eligible declarations across all 186
non-generated PR C# files; the 110-file documentation slice changes only
XML
comments and spacing. `f17765475` applies the three requested Markdown
edits.

### Earlier feedback follow-ups

`a53950737` removes single-slot notification pinning and extracts
aggregate
implementation from MonitoredItem. Targeted sampling, aggregate
modification,
history/live handoff, queue/lifecycle, restore, and serialization cases
pass
**101/101 on net10.0 and 101/101 on net48**, without failures or skips.
Scoped formatting/analyzers are clean; the focused review found no
significant
issues. The final formatted monitored-item fixtures also pass 45/45 on
net48.

The preceding `b21555568` removes the legacy sampling API bridge and
durable
notification-priority state. Its targeted Server cases passed 97/97 and
shared
subscription-store cases passed 64/64 on each framework. The broader
evidence
below remains pinned to its original tested commit, not attributed to
these
follow-ups.

### Earlier integrated-implementation validation

Validated implementation commit: **`3efae597f`**. The following commit,
`f6dbefb1c`, only adds two explanatory comment lines for the final
standards
review; it changes no executable code.

| Scope | net10.0 | net48 |
| --- | --- | --- |
| Server | 5,187 passed; 56 skipped | Affected surface: 2,160 passed; 1
reproduced baseline failure; 56 skipped |
| Client | 2,202 passed; 2 skipped | 2,204 passed; 5 skipped |
| History integration | 519 passed; 21 skipped | 519 passed; 21 skipped
|
| Redundancy server | 641 passed | 641 passed |
| Redundancy client | 124 passed | 124 passed |
| Core shared-store regression suite | 23 passed | 23 passed |

All six affected samples passed non-incremental Release/net10.0 builds
with
zero warnings and errors: ConsoleReferenceClient,
ConsoleReferenceServer,
RedundantServer, RedundantClient, MinimalBoilerServer, and
PumpDeviceIntegrationServer.

The published self-contained win-x64 NativeAOT executable is 116,924,928
bytes and has no CLR header or managed runtime dependency. Direct
execution
passed **HistoryAotTests 3/3** and **RaftAotTests 2/2**.

Final standards and specification reviews found no confirmed outstanding
high/medium functional gaps or hard standards violations. The remaining
constructor-purpose clarification is addressed in `f6dbefb1c`.

### Reproduced baseline exceptions

The net48 hosted-startup timeout also reproduces in a pristine worktree
at
the previous PR head, `24cf1416d`, in

`RegisterPostStartRegistriesWiresHistorianAndAliasStoresOnPlainServerAsync`,
with the same subsequent certificate-leak assertion. The corresponding
renamed case fails before startup in the reviewed branch as well. This
is
reported separately from the net48 affected-surface results, not counted
as
a passing full Server suite. The net48 matrix selected the historian,
aggregate, monitored-item, fluent, and continuation surfaces and
excluded
the Hosting namespace.

`DurableDataValueQueueVerifyReferenceBatchingAsync` failed at item 1000
in
the net48 affected-surface run and passed its single isolated rerun. The
same
failure at the same assertion reproduces on pristine `849e16acc`; the
test,
sample queue, queue factory, and batch persistor are unchanged. The
original
failure remains in the table rather than being erased by the rerun.

### CI source repairs

- `4be7eb8f7` keeps diagnostics/configuration managers out of
distributed
address-space replication. Those managers inherit the source interface,
but their live server state and redundancy metadata must remain
replica-local.
  The ownership regression passes on net10.0 and net48, and all nine
  redundancy sample CI tests pass locally.
- `d17f467b3` completes the sample startup repair: core managers are
also
replica-local; the startup banner no longer advertises readiness before
initialization; the producer starts after distributed services; and
native
Raft startup no longer forces disruptive extra elections. The full
sample
suite passed 9/9, with initialized `RedundancySupport=Hot`, and focused
  Raft/address-space regressions passed 8/8 and 3/3.
- `81b0b72be` moves the unchanged distributed-historian NativeAOT
scenario
into a smaller, always-run companion executable to bound Apple's linker
input. All 137 AOT tests remain present; the moved test and helpers are
  unchanged. GitHub and Azure publish/run both native executables, with
separate result directories where they share a job. The companion passed
actual Windows NativeAOT execution. Linux and Intel macOS CI passed both
  executables, but this split alone did not fix ARM64 macOS linking.
The remaining historian graph is rooted by ReferenceServer startup, not
just the relocated test. No test exclusion or speculative linker setting
  was added to conceal it.
- `8a5842913` isolates the independent MCP test graph into an always-run
native host. The existing MCP source and assembly leak hooks are linked
  unchanged, and evaluated compiler inputs prove exactly one owner for
  every test source: 133 main + 3 MCP + 1 historian = 137 declarations.
All three hosts run on every AOT platform. The main Windows native
object
is 9.35% smaller; both changed publishes had zero diagnostics. MCP
passed
  3/3; the identical main executable passed 133/133 on one unfiltered
followup after two initial endpoint-discovery connection failures, which
  remain recorded in the local evidence.
- The previous Intel macOS job successfully published and executed its
native
tests, then failed on artifact-upload DNS (`ENOTFOUND`). No upload gate,
  shared environment setting, or cache configuration was disabled.

The first repair round also encountered the unrelated
`MetricsAreEmittedForChannelLifetimeAsync` timing failure on macOS Core.
Neither that test nor channel-manager code is changed by this PR, and
its
assertions remain intact. It passed unchanged on the final repair head.

On `d17f467b3`, the Linux and macOS redundancy sample jobs pass; the
remaining
failure was ARM64 Apple's `too many large addends` assertion. The
verified
upstream relocation-anchor fix (dotnet/runtime#124721, backport
dotnet/runtime#132171) is not present in the shipping ILCompiler
10.0.11.
An experimental multi-module probe failed and was rejected, not added to
CI.
On `8a5842913`,

[`aot-macos-latest`](https://github.com/OPCFoundation/UA-.NETStandard/actions/runs/34102158680/job/101678934057)
successfully publishes and executes all three native hosts on ARM64:
136 main runtime cases, 1 historian case, and 3 MCP cases, with no
skips.
The previous Apple linker blocker is resolved. Linux NativeAOT also
passes.
No assertion, test, shared environment setting, cache, or required gate
was
weakened.

The same CI run reports a separate macOS Sessions teardown failure: all
662 executed tests pass, but the global leak assertion detects one
undisposed certificate. The MCP partition changes no runtime, Sessions,
or
test-fixture code. A single unchanged diagnostic rerun is queued once
GitHub
permits rerunning that job; the failure is not suppressed or counted as
green.
Other CI checks are still pending.

## Related issues

- Fixes #4387
- Fixes #4400

## Checklist

- [ ] I have signed the CLA and read the contributing guide.
- [x] I have added regression tests and directly related documentation.
- [x] I have retained working reference and redundant-server sample
wiring.
- [x] Final validation and review evidence is complete, including the
baseline exceptions above.
- [ ] All required CI checks pass; the fail-fast rerun for `73c619435`
is pending.

---------

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>
Copilot-Session: 9dbd9527-d818-47a0-984c-fbb1472d3d6b
2026-09-08 11:32:23 +02:00
Copilot d525bc3f28 Bound reconnect cleanup and organize samples by domain (#4276)
# Description

This PR fixes bounded ManagedSession reconnect cleanup and reorganizes
the sample applications into domain-focused folders.

## Reconnect cleanup

- Bounds reconnect integration cleanup with independent 30-second close
and dispose limits.
- Sends `CloseSession` through the awaited transport request path during
`Session.DisposeAsync`.
- Preserves explicit `Session.CloseAsync` behavior that waits for or
cancels outstanding publish requests.
- Covers the disposal request path with a regression test.

## Sample organization

- `samples/OpenUsd`: `GeneratorServer`, `SiteCompositionServer`
- `samples/Redundancy`: `RedundantClient`, `RedundantServer`,
`RedundantPubSub`
- `samples/Isa95`: `MinimalIsa95Server`
- `samples/MinimalApi`: `MinimalBoilerServer`, `MinimalCalcServer`,
`MinimalClient`
- `samples/DI`: `PumpDeviceIntegrationServer`
- `samples/Lds`: `ConsoleLdsServer`
- `samples/Reference`: `ConsoleReferenceClient`,
`ConsoleReferenceServer`
- `samples/PubSub`: `ConsoleReferencePubSubClient`

`UA.slnx` now exposes the same requested domain groups. Project
references, tests, runtime sample probes, CI workflows, Dockerfiles,
Compose files, helper scripts, and documentation were updated to the new
paths. `samples/Robotics/MinimalRobotServer` remains under `Robotics`.

## Validation

- `dotnet build UA.slnx`
- 3 Redundancy short-haul sample tests
- 70 DI sample tests
- 914 OpenUSD tests
- 1 WotCon model-materialization test
- 137 AOT tests
- `docker compose config` for all 6 moved Redundancy Compose files

## Related Issues

- Fixes #4273

## Checklist

- [ ] I have signed the
[CLA](https://opcfoundation.org/license/cla/ContributorLicenseAgreementv1.0.pdf)
and read the
[CONTRIBUTING](https://github.com/OPCFoundation/UA-.NETStandard/blob/master/CONTRIBUTING.md)
doc.
- [x] I have added tests that prove my fix is effective or that my
feature works and increased code coverage.
- [x] I have added all necessary documentation.
- [x] I have verified that my changes do not introduce new build or
analyzer warnings.
- [x] I built the complete `UA.slnx` solution locally.
- [ ] I ran all tests locally against at least .NET Framework and .NET
10.
- [ ] I fixed all failing and flaky tests in the CI pipelines and all
CodeQL warnings.
- [x] I have addressed all PR feedback received.

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: marcschier <11168470+marcschier@users.noreply.github.com>
Co-authored-by: Marc Schier <mschier@microsoft.com>
Co-authored-by: Marc Schier <marcschier@users.noreply.github.com>
Copilot-Session: a2c2838f-74ae-4997-a1d4-50574d9e0636
2026-08-21 04:35:47 +00:00