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>
35 lines
1.4 KiB
Markdown
35 lines
1.4 KiB
Markdown
# WCF Status Evidence
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Commands:
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```powershell
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dotnet run --no-build --project tools\AVEVA.Historian.ReverseEngineering -- wcf-status localhost 32568
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dotnet run --no-build --project tools\AVEVA.Historian.ReverseEngineering -- wcf-status localhost 32568 Version
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```
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Confirmed:
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- The local status endpoint is `net.tcp://localhost:32568/Stat`.
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- `IStatusServiceContract2` is a static WCF contract named `Stat` in namespace
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`aa`. The managed definitions now include `GetSystemParameter`, `GETHI`,
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`PNGS`, and `PNGP`.
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- `GetInterfaceVersion` returns code `0`, version `0` on the local 2020
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install.
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- The decompiled `CStatusConnectionWCF.GetServerTime` implementation is a
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WCF-path stub that returns success without calling the `Stat` service. The
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managed direct call likewise returns code `0` with size `0` and no buffer.
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Observed sanitized localhost results:
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- `GetSystemTimeZoneName(handle: 0)` returns code `4` and no value.
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- `IsDBCaseSensitive(handle: 0)` returns code `4`.
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- `GetSystemParameter(handle: 0, "Version")` returns `false` with no error
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buffer.
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Interpretation:
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- `Stat` endpoint routing is confirmed, but status operations that require a
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real client handle are not usable until managed session open is solved.
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- `GetServerTime` should not be promoted into the public SDK as a real server
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time call from this WCF path; native evidence shows it is a no-op stub here.
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