Files
histsdk/docs/reverse-engineering/dnlib-historianclient-startdataquery-target-latest.json
dohertj2 c95824a65d Initial commit: managed .NET 10 AVEVA Historian SDK + reverse-engineering toolkit
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>
2026-05-04 06:31:48 -04:00

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{
"Path": "C:\\Users\\dohertj2\\Desktop\\histsdk\\current\\aahClientManaged.dll",
"Filter": "0x060055E4",
"IsILOnly": false,
"IsMixedMode": true,
"Methods": [
{
"DeclaringType": "\u003CModule\u003E",
"Name": {
"String": "HistorianClient.StartDataQuery",
"Data": "SGlzdG9yaWFuQ2xpZW50LlN0YXJ0RGF0YVF1ZXJ5",
"Length": 30,
"DataLength": 30
},
"Token": "0x060055E4",
"Rva": "0x004160C4",
"IsStatic": true,
"IsPublic": false,
"HasBody": true,
"InstructionCount": 80,
"Calls": [
{
"Offset": "0x0007",
"OpCode": "call",
"Operand": "std.shared_ptr\u003CQuery\u003E* modreq(System.Runtime.CompilerServices.IsUdtReturn) modopt(System.Runtime.CompilerServices.CallConvCdecl) \u003CModule\u003E::HistorianClient.StartQuery(HistorianClient* modopt(System.Runtime.CompilerServices.IsConst) modopt(System.Runtime.CompilerServices.IsConst),std.shared_ptr\u003CQuery\u003E*,System.UInt32 modopt(System.Runtime.CompilerServices.IsLong)*)",
"Token": "0x060055C4"
},
{
"Offset": "0x005C",
"OpCode": "call",
"Operand": "System.Boolean modopt(System.Runtime.CompilerServices.CallConvCdecl) \u003CModule\u003E::Query.StartDataQuery(Query* modopt(System.Runtime.CompilerServices.IsConst) modopt(System.Runtime.CompilerServices.IsConst),INSQL_QUERYTYPE,INSQL_QUERYFORMAT,HISTORIAN_SUMMARYTYPE,System.UInt32 modopt(System.Runtime.CompilerServices.IsLong),System.Char modopt(System.Runtime.CompilerServices.IsConst)**,System.UInt32 modopt(System.Runtime.CompilerServices.IsLong),System.Char modopt(System.Runtime.CompilerServices.IsConst)**,System.UInt64,System.UInt64,System.Double,System.Single,System.UInt32,System.Char modopt(System.Runtime.CompilerServices.IsConst)*,E_VERSIONTYPE,E_INTERPOLATIONTYPE,E_TIMESTAMPRULE,E_QUALITYRULE,System.Char modopt(System.Runtime.CompilerServices.IsConst)*,System.Char*,System.UInt16,System.Char*,System.UInt16,EValueSelector,E_AGGREGATIONTYPE,System.UInt32,System.Byte modopt(System.Runtime.CompilerServices.IsConst)*,System.Char modopt(System.Runtime.CompilerServices.IsConst)*,System.UInt16,CMetadataNamespace modopt(System.Runtime.CompilerServices.IsConst)* modopt(System.Runtime.CompilerServices.IsImplicitlyDereferenced),SRedundantEndpoint modopt(System.Runtime.CompilerServices.IsConst)* modopt(System.Runtime.CompilerServices.IsImplicitlyDereferenced),SRedundantEndpoint modopt(System.Runtime.CompilerServices.IsConst)* modopt(System.Runtime.CompilerServices.IsImplicitlyDereferenced),SError* modopt(System.Runtime.CompilerServices.IsImplicitlyDereferenced))",
"Token": "0x0600574B"
},
{
"Offset": "0x006A",
"OpCode": "call",
"Operand": "System.Void modopt(System.Runtime.CompilerServices.CallConvCdecl) \u003CModule\u003E::Query.EndQuery(Query* modopt(System.Runtime.CompilerServices.IsConst) modopt(System.Runtime.CompilerServices.IsConst))",
"Token": "0x0600574D"
},
{
"Offset": "0x007F",
"OpCode": "call",
"Operand": "System.Void \u003CModule\u003E::___CxxCallUnwindDtor(System.Void (System.Void*),System.Void*)",
"Token": "0x06005C0F"
},
{
"Offset": "0x0091",
"OpCode": "call",
"Operand": "System.Void modopt(System.Runtime.CompilerServices.CallConvCdecl) \u003CModule\u003E::std._Ref_count_base._Decref(std._Ref_count_base* modopt(System.Runtime.CompilerServices.IsConst) modopt(System.Runtime.CompilerServices.IsConst))",
"Token": "0x06000137"
}
]
}
]
}