Joseph Doherty
9dfd1937c2
Implements the 13 record types from `[MS-NMF]` §2.2 (Version, Mode, Via, KnownEncoding, ExtensibleEncoding, Unsized/SizedEnvelope, End, Fault, UpgradeRequest/Response, PreambleAck, PreambleEnd) over a `net.tcp` channel. Includes the `Multibyte Int31` length codec (LEB128-style 7-bit groups over a 31-bit unsigned range, max 5 bytes; rejects negative input and overflow), plus an `encode_preamble` helper that emits the canonical ASB connect record sequence (`Version 1.0 → Duplex → Via $uri → BinaryWithDictionary → PreambleEnd`). Pure codec — no I/O. Encoders write into a `Vec<u8>`; decoders parse from a `&[u8]` slice and return the consumed-byte count alongside the record. Higher-level connect/request/response orchestration stays in the M5 ASB client (`mxaccess-asb`, F25). 24 new unit tests cover round-trip for every record type, multibyte-int31 boundary cases (0, 1, 127, 128, 16383, 16384, 200, i32::MAX), preamble emission against the canonical ASB sequence, byte-layout pinning for Version/Mode/KnownEncoding, and rejection of unknown record/mode/encoding bytes plus truncated sized-envelope frames. 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.