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Changelog

v1.2.0 — 2026-04-22

Added — Security Key Service (service 11, port 4851)

  • opcua-sks service — new classic OPC UA server instance that boots the shared TestServer image with OPCUA_ENABLE_SKS=true. Exposes the OPC UA Part 14 §8.4.2 GetSecurityKeys method under ns=1;s=TestServer/SecurityKeyService, letting PubSub subscriber-side clients (e.g. php-opcua/opcua-client-ext-pubsub's SksGroupKeyProvider) exercise the real RPC path against a live server instead of only MockClient.
  • SecurityKeyServiceBuilder under src/TestServer/AddressSpace/ — mirrors the existing builder pattern, self-contained, opt-in via EnableSks config flag so the other 10 server instances are unaffected.
  • Env-driven config — OPCUA_ENABLE_SKS, OPCUA_SKS_GROUP_ID, OPCUA_SKS_POLICY_URI, OPCUA_SKS_TOKEN_ID, OPCUA_SKS_SIGNING_KEY_HEX, OPCUA_SKS_ENCRYPTING_KEY_HEX, OPCUA_SKS_KEY_NONCE_HEX, OPCUA_SKS_TIME_TO_NEXT_KEY_MS, OPCUA_SKS_KEY_LIFETIME_MS. All off by default on the other services; on only for the dedicated opcua-sks service.
  • Action update — sks is a new option for the servers CSV input in action.yml.
  • Docs — new section "11. Security Key Service" in docs/servers.md, new row in the endpoint table of docs/ci-integration.md, new row in README.md "What's Inside".
  • Test-only scope — hardcoded keys, no caller authentication, no rotation scheduling, no revocation. Real SKS deployments are expected to do all of the above.

Added — PubSub publisher (service 12, port 4850)

  • opcua-pubsub service — new UA-.NETStandard UDP+UADP publisher built from src/TestPublisher/ (separate Dockerfile Dockerfile.publisher, separate .csproj against the OPCFoundation.NetStandard.Opc.Ua.PubSub NuGet package). Broadcasts a deterministic DataSet (counter / timestamp / sine-value) every 500 ms, bringing real UADP interop coverage for Part 14 subscriber-side clients (e.g. php-opcua/opcua-client-ext-pubsub).
  • Env-driven configuration — same OPCUA_* prefix convention as the TestServer services. OPCUA_URL, OPCUA_NETWORK_INTERFACE, OPCUA_PUBLISHER_ID, OPCUA_WRITER_GROUP_ID, OPCUA_DATASET_WRITER_ID, OPCUA_DATASET_NAME, OPCUA_PUBLISH_INTERVAL_MS, OPCUA_TICK_INTERVAL_MS, OPCUA_LOG_LEVEL — one image, reconfigure via compose env.
  • Networking — publisher + opcua-pubsub-relay sidecar pair. Publisher sends unicast UADP to the relay on a shared compose bridge (pubsub-net); the relay forwards each datagram to host.docker.internal:14850. Subscribers on the physical host listen on 127.0.0.1:14850 (or 0.0.0.0:14850). Works identically on Docker Engine bare-metal (GitHub Actions runners, CI) and Docker Desktop (Linux / macOS / Windows) — multicast over the VM boundary is sidestepped entirely.
  • Security — unsecured (mode None). For signed and encrypted PubSub streams subscribers pair this with the opcua-sks service (service 11) — full end-to-end secured publisher + SKS is planned follow-up work.
  • Action update — pubsub is a new option for the servers CSV input in action.yml.
  • Docs — new section "12. PubSub Publisher" in docs/servers.md, new row in the endpoint table of docs/ci-integration.md, new row in README.md "What's Inside".

Changed

  • Pinned UA-.NETStandard NuGet version to 1.5.378.134 (previously 1.5.*). The wildcard would auto-upgrade on every Docker build, which defeats the purpose of a stable interop counterpart: any upstream change to protocol semantics would silently break every client test run until someone noticed. Pinning makes NuGet upgrades an explicit decision.
    • Why 1.5.378.134 specifically: it is the latest stable (released 2026-03-26) that predates the "Secure channel enhancements 2025 11" rework in UA-.NETStandard master (commit d188383, merged 2026-04-16). That rework turns on strict OPC UA 1.05.4 ECC behaviour — first sequence number for ECC policies MUST be 0, with wrap at UInt32.MaxValue — and adds _AesGcm / _ChaChaPoly policy variants. A client speaking 1.05.3 ECC against a strict server would fail at the first message.
    • When to bump: once a client in the ecosystem (e.g. php-opcua/opcua-client) ships the 1.05.4 ECC fix, coordinate a bump here and in the client's integration tests in the same release train.

v1.1.0 — 2026-04-10

ECC Security Policies

  • 2 new server instances for Elliptic Curve Cryptography (ECC) security policies (ports 4848-4849).
  • Server 9 — ECC NIST (opcua-ecc-nist, port 4848): ECC_nistP256 and ECC_nistP384 policies with NIST P-256/P-384 curves.
  • Server 10 — ECC Brainpool (opcua-ecc-brainpool, port 4849): ECC_brainpoolP256r1 and ECC_brainpoolP384r1 policies (European BSI standard).
  • ECC certificates auto-generated by UA-.NETStandard SDK via ApplicationCertificates collection with CertificateType mapping.
  • Updated GitHub Actions composite action (action.yml) with ecc-nist, ecc-brainpool server options.
  • Updated CI compose overrides (docker-compose.ci.yml) for the 2 new services.
  • Upgraded to .NET 10.0 runtime and SDK.

v1.0.0 — 2026-04-02

Initial Release

Complete rewrite of the OPC UA test server suite from Node.js/node-opcua to .NET 8.0/UA-.NETStandard.

Server Infrastructure

  • 8 pre-configured server instances via Docker Compose covering all major OPC UA security policies, modes, and authentication methods (ports 4840-4847).
  • .NET 8.0 runtime (Alpine) with OPCFoundation.NetStandard.Opc.Ua.Server 1.5.x.
  • Auto-generated certificates via OpenSSL (CA, server, client, self-signed, expired) on first startup.
  • Server auto-generates its own application certificate via CheckApplicationInstanceCertificates().
  • ApplicationUri: urn:opcua:testserver:nodes for all server instances.
  • Health check support via --health CLI argument.

Address Space (~300 nodes)

  • 21 scalar data types (Boolean through LocalizedText) in read/write and read-only variants.
  • 20 array types + 14 empty arrays + 6 read-only arrays.
  • 3 multi-dimensional matrices (3x3 Double, 2x4 Int32, 2x3x4 Byte).
  • 12 methods — arithmetic, string ops, arrays, async, error handling, event generation.
  • 13 dynamic variables — counters, sine/sawtooth/triangle waves, random values, status cycling.
  • 3 custom event types with periodic emission.
  • 3 alarm types — ExclusiveLimit, NonExclusiveLimit, OffNormal.
  • 4 historical variables with HistoryRead support (1000ms recording interval, up to 10,000 samples).
  • Structured objects with nesting up to 10 levels deep.
  • 2 extension object variables with binary-encoded ExtensionObject values (namespace 3: urn:opcua:test-server:custom-types).
  • 50 access control variables covering every combination of type and access level.
  • 4 OPC UA Views for filtered browsing.

Namespaces

  • ns=0: http://opcfoundation.org/UA/ (standard)
  • ns=1: urn:opcua:testserver:nodes (all custom nodes)
  • ns=2: http://opcfoundation.org/UA/DI/
  • ns=3: urn:opcua:test-server:custom-types (extension object types and encodings)
  • ns=4: http://opcfoundation.org/UA/Diagnostics

Authentication & Access Control

  • 4 user accounts with role-based permissions (admin, operator, viewer, test).
  • Role-based write protection on OperatorLevel variables (admin/operator can write, viewer cannot).
  • Operation limits on no-security server: MaxNodesPerRead=5, MaxNodesPerWrite=5.

Security

  • All 6 OPC UA security policies: None, Basic128Rsa15, Basic256, Basic256Sha256, Aes128_Sha256_RsaOaep, Aes256_Sha256_RsaPss.
  • All 3 security modes: None, Sign, SignAndEncrypt.
  • Certificate authentication with CA trust chain.
  • Auto-accept mode for quick encrypted testing.

CI/CD

  • GitHub Actions composite action (action.yml) for one-step CI integration.
  • Docker image published to ghcr.io/php-opcua/uanetstandard-test-suite.
  • CI-optimized compose file (docker-compose.ci.yml) with no-restart policy.

Documentation

  • Full documentation suite in docs/ covering setup, servers, authentication, security, address space, data types, methods, dynamic variables, events, alarms, historical data, structures, extension objects, access control, views, testing guide, CI integration, customization, and AI reference.
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