# Description Follow-up to #3978 based on the latest OPC UA CTT aggregate, matrix, Historical Access, Attribute, and Node Management runs. ## Aggregate run 16 - Ignore synthetic `BadBoundNotFound` raw-bound markers when feeding aggregate calculators. - Add direct and live historian regression coverage. ## Multi-dimensional Variant matrices - Fix `Variant.Copy()` so rank-2 Variant matrices preserve their payload and dimensions. - Enforce valid Variant matrix dimensions consistently across Binary, JSON, XML stream, and XML parser codecs. - Encoders return `BadEncodingError`; decoders return `BadDecodingError` for malformed matrix dimensions. - Add cross-codec valid/null/empty/malformed tests and a batched ReferenceServer Read regression. - Correct the previous CTT issue attribution: the invalid `Scalar_Static_Arrays2D_Variant` server encoding poisoned the batched CTT Read. ## Node Management AddNodes - Return `BadNodeIdRejected` for unsupported requested-NodeId namespaces. - Validate hierarchical ReferenceType source/target NodeClass constraints. - Document run-18 confirmation that all remaining 15 AddNodes errors are CTT project/script configuration issues. ## Historical Access and Attribute Services run 18 - Reject whitespace in `NumericRange` syntax with `BadIndexRangeInvalid`. - Add HistoryRead tests for operation-level invalid syntax and per-DataValue `BadIndexRangeNoData`. - Document CTT defects: - `012.js` expects `BadIndexRangeNoData` at the operation level instead of on returned DataValues; - `Err-012.js` uses a non-historizing node for an access-denied test; - generic Attribute array helpers omit NodeId[] and StatusCode[] conversion paths. ## Base Information model validation run 19 - Run the CTT main session as `sysadmin` over Basic256Sha256 SignAndEncrypt so SecurityAdmin RolePermissions and EncryptionRequired restrictions are both satisfied without weakening the server model. - Preserve predefined well-known NodeIds while making generated dynamic type and optional-child factories allocate compatible per-instance NodeIds, remap internal references, and update references from the owning subtree. - Materialize dynamic RoleType properties through generated helpers and keep role-child string NodeIds disjoint from numeric RoleManager root IDs. - Add net48/net10 regressions for generator output, NodeId allocation/reference remapping, DI mandatory children, dynamic roles, and low-privilege versus SecurityAdmin Browse visibility. - Document CTT defects for permission-unaware mandatory-child validation, the UA 1.04 reference model used against a UA 1.05 server, stale ServerDiagnostics cache, and the `ConformanceUnits` scalar/array mismatch. ## Related Issues - Follow-up to #3960 and #3978. ## Checklist - [x] I have signed the CLA and read the CONTRIBUTING document. - [x] Tests prove the fixes and improve coverage. - [x] Required CTT documentation is updated. - [x] Focused builds/tests introduce no warnings. - [x] Affected tests pass on .NET Framework and .NET 10. - [ ] CI and CodeQL are green. - [ ] All PR feedback is addressed. ## Latest CTT full run and A&C run 20 - Fix Monitor Value Change V2 `036.js`: an ambiguous `DataValue(StatusCode)` call encoded `BadIndexRangeNoData` as a Good value. - Prove all 19 configured matrix monitored items notify when the selected value actually changes; document the independent `042.js` script defects. - Rebase dynamic `CertificateExpired` / `TrustListOutOfDate` alarm roots and descendants, restore standard type declarations and ModellingRules, and expose the cross-node-manager references. - Deliver method-triggered events to every authorized Session, fixing the two-Session Confirm scenario. - Preserve locale-only `LocalizedText` values consistently across Binary, JSON, and XML and align Acknowledge/Confirm comment behavior and tests. - Document the remaining proven CTT defects for TransactionDiagnostics, SemanticChange, History `013`, PolicyId scope, A&C, durable subscriptions, and Subscription Minimum events. ## Base synchronization Merged `master` through `007cfaf90` (`#4010`, repository layout consolidation) and retained the matrix regression tests at their new `tests/` locations. ## Latest validation - Focused merged-tree tests pass on net10 and net48. - `Opc.Ua.Server` and `Quickstarts.Servers` Release builds complete with 0 warnings and 0 errors on net10 and net48. - The existing `DisableEnableViaTypeAndInstanceMethodNoEventsDuringDisabledAsync` timing test took its documented inconclusive timeout path after the layout merge; no test failure was reported. --------- Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com> Co-authored-by: Copilot <198982749+Copilot@users.noreply.github.com> Co-authored-by: romanett <romanett98@gmail.com>
OPC Foundation UA .NET Standard Reference Client
Introduction
The console reference client can be configured using several console parameters. Some of these parameters are explained in more detail below.
To see all available parameters call console reference client with the parameter -h.
Supported transport profiles
The client picks the wire transport automatically from the serverUrl
scheme. The OPC UA spec aliases the URL scheme to the
TransportProfileUri
on the negotiated endpoint:
| URL scheme | TransportProfileUri | OPC UA Part 6 reference |
|---|---|---|
opc.tcp:// |
uatcp-uasc-uabinary |
§7.4.2 |
opc.https:// (or https://) with binary body |
https-uabinary |
§7.4.4 |
opc.https:// (or https://) with application/opcua+uajson body |
https-uajson |
§7.4.5 |
opc.wss:// (or wss://) with opcua+uacp sub-protocol |
uawss-uasc-uabinary |
§7.5.2 |
opc.wss:// (or wss://) with opcua+uajson sub-protocol |
uawss-uajson |
§7.5.2 |
Examples:
# UA-TCP (default)
dotnet ConsoleReferenceClient.dll opc.tcp://localhost:62541/Quickstarts/ReferenceServer
# WSS+uacp (binary UA SecureChannel over TLS WebSocket)
dotnet ConsoleReferenceClient.dll opc.wss://localhost:62543/Quickstarts/ReferenceServer
# HTTPS (binary)
dotnet ConsoleReferenceClient.dll opc.https://localhost:62543/Quickstarts/ReferenceServer
The reference server (ConsoleReferenceServer) advertises the
opc.tcp://, opc.https:// and opc.wss:// endpoints by default; see
docs/Transports.md for the full server
configuration story (TLS certificates, mutual TLS, JSON sub-protocol
restrictions, etc.).
Reverse Connect
The OPC UA reverse connect feature allows an OPC UA server to initiate the connection to a client, rather than the traditional model where clients connect to servers. This is particularly useful in scenarios where the server is behind a firewall or NAT, making it difficult for clients to directly connect to it.
How to use Reverse Connect
To enable reverse connect mode, specify the client endpoint URL using the --rc or --reverseconnect parameter:
dotnet ConsoleReferenceClient.dll --rc=opc.tcp://localhost:65300 opc.tcp://localhost:62541/Quickstarts/ReferenceServer
The client will start a reverse connect listener on the specified endpoint (e.g., opc.tcp://localhost:65300) and wait for the server to connect to it.
Example: Client and Server with Reverse Connect
-
Start the client with reverse connect listener on port 65300:
dotnet ConsoleReferenceClient.dll --rc=opc.tcp://localhost:65300 opc.tcp://localhost:62541/Quickstarts/ReferenceServer -
In a separate terminal, start the server with reverse connect to the client:
dotnet ConsoleReferenceServer.dll --rc=opc.tcp://localhost:65300 -a
The server will establish a reverse connection to the client endpoint, and the client will use this connection to communicate with the server.
How to specify User Identity
Username & Password
Specify as console parameters:
-un YourUsername
-up YourPassword
Certificate
Place your user certificate in the TrustedUserCertificatesStore (the path can be found in the client configuration XML). Make sure to include an accessible private key with the certificate.
Specify console parameters:
-uc Thumbprint (of the user certificate to select)
-ucp Password (of the user certificates private key (optional))