UA-.NETStandard Test Suite v1.0.0

This is the evolution of php-opcua/opcua-test-suite (v1.1.5), completely rewritten from Node.js/node-opcua to .NET 8.0/UA-.NETStandard.

Why the switch?

UA-.NETStandard is the reference implementation maintained directly by the OPC Foundation — the same organization that writes the OPC UA specification. This means protocol behavior, binary encoding, security handshakes, and session management
are as close to the spec as it gets. If your client works against this server, it will work against real industrial equipment.

What's included

• 8 pre-configured OPC UA servers via Docker Compose (ports 4840-4847) covering all security policies, authentication methods, and communication modes
• ~300 address space nodes including 21 scalar types, 20 array types, 3 multi-dimensional matrices, 3 analog items with range metadata
• 12 callable methods — arithmetic, string operations, arrays, async, error handling, multi-output, event generation
• 13 dynamic variables — counters, sine/sawtooth/triangle waves, random values, status cycling
• 3 event types with periodic emission + 3 alarm types (ExclusiveLimit, NonExclusiveLimit, OffNormal)
• 4 historical variables with HistoryRead support (1000ms recording, up to 10,000 samples)
• 2 extension objects with binary-encoded ExtensionObject values (TestPointXYZ, TestRangeStruct)
• Structured objects with nesting up to 10 levels deep
• Role-based access control — admin, operator, viewer roles with enforced write restrictions
• Real certificate validation on the strict server (port 4842) — untrusted certs are rejected
• 50 access control variables covering every combination of data type and access level
• 4 OPC UA Views for filtered browsing
• Auto-generated certificates (CA, server, client, self-signed, expired) via OpenSSL
• GitHub Actions composite action for one-line CI integration
• Comprehensive documentation with 19 reference docs + machine-readable AI reference

Migration from opcua-test-suite

This is a drop-in replacement. Same ports, same endpoints, same address space structure, same user accounts, same certificate layout. If your tests worked with opcua-test-suite, they work with this — just swap the Docker image.

The only notable differences:

• Namespace index 1 is now urn:opcua:testserver:nodes (was urn:opcua:test-server:<ServerName>)
• Extension object TypeIds are in namespace 3 (urn:opcua:test-server:custom-types)
• Historical data records at 1000ms (was 1000ms in node-opcua too)
• Server auto-generates its own application certificate via CheckApplicationInstanceCertificates()