Joseph Doherty
9b8133f725
Extends AsbClient with one-way operation support (`IsOneWay = true`
in IASBIDataV2) plus the KeepAlive and Read operations.
Client API additions:
* `send_envelope_one_way(env)` — frames in SizedEnvelope, writes,
returns immediately. No response read. Mirrors WCF's IsOneWay
semantics for KeepAlive / Disconnect / AuthenticateMe.
* `send_signed_envelope_one_way(action, body, force_hmac)` —
one-way variant that runs the body through F23's authenticator
signing path so the ConnectionValidator header is attached.
* `keep_alive()` — sends an empty `KeepAliveRequest` with default
signing. Used to keep the channel alive past the WCF inactivity
timeout (30s default at `MxAsbDataClient.cs:683`).
* `read(items)` — sends a signed Read envelope, decodes
ReadResponse with both Status and Values arrays.
Operations API additions:
* `build_keep_alive_request_body()` — empty wrapper element +
asb.contracts.messages namespace. Mirror of `AsbContracts.cs:117`
(`public sealed class KeepAlive : ConnectedRequest;`).
* `ReadResponse { status: Vec<ItemStatus>, values: Vec<RuntimeValue> }`
per `AsbContracts.cs:169-179`.
* `decode_read_response(body_tokens)` — pulls both ASBIData
payloads, decodes Status as ItemStatus[], decodes Values via
`decode_runtime_value_array` (4-byte int32 count + per-element
`RuntimeValue::decode` from F24).
5 new tests:
* KeepAlive body shape (empty wrapper, correct namespace).
* ReadResponse decoder round-trip with both Status and Values.
* ReadResponse decoder graceful handling when Values is absent
(returns empty vec).
* End-to-end client::keep_alive — peer drains SizedEnvelope but
doesn't respond; client returns Ok().
* End-to-end client::read — peer responds with synthetic
ReadResponse, client recovers Values[0].timestamp_binary == 1234
and Values[0].status round-trip.
Stubbed for next F25 iterations:
* AsbClient::connect — DH Connect + AuthenticateMe handshake. Needs
ConnectRequest / ConnectResponse builders (regular WCF XML, not
the IAsbCustomSerializableType fast-path).
* Write / PublishWriteComplete / CreateSubscription /
AddMonitoredItems / Publish / Disconnect operation wrappers.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
mxaccess (Rust port)
Native Rust replacement for AVEVA / Wonderware MXAccess. See ../design/ for
the architectural specification, ../src/ for the .NET reference (the
executable spec), and ../CLAUDE.md for project-wide rules.
Status
M0 — Workspace skeleton. Stub types compile; nothing is implemented yet.
See ../design/60-roadmap.md for the M0–M6 milestone plan.
Layout
rust/
Cargo.toml workspace root
rust-toolchain.toml 1.85 stable
crates/
mxaccess-codec/ pure protocol codec, no I/O
mxaccess-galaxy/ Galaxy SQL resolver (tiberius)
mxaccess-rpc/ DCE/RPC + NTLMv2 + OXID + OBJREF
mxaccess-callback/ INmxSvcCallback RPC server
mxaccess-nmx/ INmxService2 client
mxaccess-asb-nettcp/ net.tcp framing (MC-NMF + MC-NBFX/NBFS)
mxaccess-asb/ IASBIDataV2 client
mxaccess/ async session + Transport trait + public API
mxaccess-compat/ LMXProxyServer-shaped facade
Build
cargo build --workspace
cargo test --workspace
cargo clippy --workspace -- -D warnings
cargo fmt --check
Live probes
. ..\tools\Setup-LiveProbeEnv.ps1
cargo test -p mxaccess --features live -- --ignored
The setup script fetches credentials from Infisical via
wwtools/secrets/Get-Secret.ps1. Never inline plaintext credentials.
License
MIT — see ../LICENSE.