dohertj2
c95824a65d
Full read-only SDK (src/AVEVA.Historian.Client) implementing the CLAUDE.md required
surface against AVEVA Historian's binary WCF protocol — no native AVEVA runtime
dependency. All operations live-verified against a local Historian:
- ProbeAsync, ReadRawAsync, ReadAggregateAsync, ReadAtTimeAsync, ReadEventsAsync
- BrowseTagNamesAsync, GetTagMetadataAsync (17 native data-type codes mapped)
- GetConnectionStatusAsync, GetStoreForwardStatusAsync, GetSystemParameterAsync
- 108/108 unit + integration tests pass
Includes the reverse-engineering toolkit (tools/AVEVA.Historian.ReverseEngineering)
used to decode the protocol: WCF probes, IL inspection via dnlib, and IL-rewrite
instrumentation (instrument-wcf-{write,read}message etc.) plus the .NET Framework
trace harness (tools/AVEVA.Historian.NativeTraceHarness) for parity testing.
Sanitized handoff evidence under docs/reverse-engineering/. Native AVEVA binaries
(current/, aveva-install-x64/, aveva-install-x86/) are gitignored — fetch separately
from the AVEVA installer.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
24 lines
1.1 KiB
JSON
24 lines
1.1 KiB
JSON
{
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"GeneratedUtc": "2026-05-02T23:00:03Z",
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"Scenario": "native integrated history read",
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"Sanitized": true,
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"InstrumentedMethods": {
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"CServerClient.GetHandle": "0x060017F9",
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"HistorianClient.OpenConnection": "0x060055D8",
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"Query.StartDataQuery": "0x0600574B",
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"CRetrievalConnectionWCF.StartQuery2": "0x06004A0D",
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"CRetrievalConnectionWCF.GetNextQueryResultBuffer2": "0x06004A0E",
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"HistorianClient.GetNextRow<DataQueryResultRow>": "0x0600588D"
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},
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"ObservedValues": {
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"CServerClientGetHandleRecords": 0,
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"HistorianClientOpenConnectionHandle": 2,
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"StartDataQueryClientHandleCandidate": 2,
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"WcfStartQuery2ClientHandle": "<transient-redacted>",
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"WcfStartQuery2ServerQueryHandle": "<transient-redacted>",
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"WcfStartQuery2Success": 1,
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"WcfGetNextQueryResultBuffer2Success": 1
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},
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"Conclusion": "CServerClient.GetHandle is not called on this successful local history read path. The transient WCF retrieval client handle is therefore not obtained through this accessor; the next target should be direct field access or the virtual/calli path through CRetrieval.StartQuery2 and CSrvRetrievalConnection.StartQuery."
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}
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