- HistorianTagExtendedPropertyProtocol.ParseResponse: fix the multi-property/
multi-group response shape captured live from the 2023 R2 server. The server
returns one group per property (the tag name repeats), each propertyCount=1, and
a uint16 searchability-flags trailer per property (0x0003 built-in, 0x0001 user-
added) — NOT the single-byte group trailer the old model assumed, which drifted
one byte per group and threw "expected 0x09 found 0x01" on any buffer with more
than one property. Now reads the per-property uint16 trailer (tolerates a legacy
1-byte tail). Fixes read-back on both WCF and gRPC. Adds GetTagExtendedPropertiesRaw
for future captures.
- HistorianGrpcStatusClient.GetConnectionStatusAsync (plan #5): synthesize connection
status from a measured gRPC handshake (OpenConnection yielding a storage-session
GUID => connected), mirroring the WCF synthesize-from-probe approach. Routed in
Historian2020ProtocolDialect on UseGrpc (the WCF path used the MDAS binding, which
can't reach the gRPC port).
- HistorianGrpcSqlClient: record the negative plan-#4 result — a HistoryService.
RegisterTags prime does NOT clear the server-side CSrvDbConnection fault (tried live
on both 0x402/0x401); the op stays bounded behind ProtocolEvidenceMissingException.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B6mcaT2PjRFKcogzp9UkfC
Wire the config operations that previously only worked over WCF onto RemoteGrpc,
reusing the proven 2020 byte serializers verbatim inside the protobuf bytes fields
(keyed by the Open2 session handle). Live-verified against a real 2023 R2 server
where noted.
Read ops (live-verified):
- GetRuntimeParameterAsync -> StatusService.GetRuntimeParameter (GETRP serializer)
- GetTagExtendedPropertiesAsync -> RetrievalService.GetTagExtendedPropertiesFromName
(GetTepByNm serializer + sequence paging; page-0 FillBufferFromVector is the
benign no-data terminator, matched to the WCF break-and-return-empty semantics)
Server-walled (bounded with captured evidence):
- ExecuteSqlCommandAsync -> RetrievalService.ExecuteSqlCommand. The request rides
the RPC but the server-side CSrvDbConnection.ExecuteSqlCommand faults
(IndexOutOfRange / native err 38) on a DB-connection precondition the pure
managed gRPC session doesn't establish (same class as OpenStorageConnection).
Surfaced as ProtocolEvidenceMissingException.
Write ops (tooled + routed, sandbox-gated — not run destructively live):
- EnsureTagAsync / DeleteTagAsync / RenameTagsAsync / AddTagExtendedPropertiesAsync
via HistoryService.EnsureTags / DeleteTags / StartJob / AddTagExtendedProperties
on a write-enabled (0x401) session, reusing the WCF golden serializers. The WCF
priming discovery-dance is omitted (the M3 gRPC write probe worked without it);
add it first if a live sandbox run is rejected.
Routed in Historian2020ProtocolDialect / HistorianClient on the RemoteGrpc branch.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B6mcaT2PjRFKcogzp9UkfC
Joseph Doherty