Make the service build, run, and install on Linux as a first-class
target while keeping the Windows Service + Event Log behaviour intact.
- Build: drop the hardcoded win-x64 RID — single-file publish now works
for any RID. publish.ps1 gains -Rid; new publish.sh for Linux hosts.
- Diagnostics: DiagnosticSinkSelector picks the Error+ sink per host —
Windows Event Log under the SCM, local syslog under systemd
(Serilog.Sinks.SyslogMessages), none for interactive runs. The
EventLog truncation helper is extracted so it is testable cross-OS.
- Host: Program.cs registers AddSystemd() alongside AddWindowsService().
- Config: a RID-conditioned appsettings template ships Windows or Unix
paths; both templates are schema-validated by a test.
- Install: systemd unit (Type=exec) plus install.sh / uninstall.sh.
Also fixes two cross-platform bugs found while testing: install.ps1
and uninstall.ps1 used New-EventLog / Remove-EventLog (absent in
PowerShell 7), and the E2E sim launcher hardcoded Windows venv paths.
- Docs updated across README, CLAUDE.md, and docs/ for dual-platform.
413 tests pass on Windows; 374 (all non-simulator) on Linux.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Adds the mbproxy service end-to-end. Phases 00-08 implement the
production-ready single-listener / 1:1-backend transparent Modbus TCP
proxy with bidirectional BCD rewriting for the ~54-PLC DL205/DL260
fleet. Phase 9 replaces the connection layer with a single backend
socket per PLC plus MBAP TxId rewriting, lifting the H2-ECOM100's
4-concurrent-client cap as an operational ceiling.
Phase 9 additions of note:
- PlcMultiplexer + UpstreamPipe + TxIdAllocator + CorrelationMap
- InFlightRequest with IReadOnlyList<InterestedParty> (load-bearing
for Phase 10 read coalescing — do not collapse to a single field)
- Per-request watchdog: surfaces Modbus exception 0x0B to upstream
on BackendRequestTimeoutMs, defending against lost responses,
dead-PLC paths, and pymodbus 3.13.0's concurrent-multiplexed-
request bug (its ServerRequestHandler.last_pdu state race)
- Status DTO + HTML gain inFlight / maxInFlight / txIdWraps /
disconnectCascades / queueDepth (Tier 1.6 in docs/kpi.md)
Tests: 263 unit + 38 E2E. Multiplexer correctness under truly
concurrent backend traffic is proved against a stub backend in
PlcMultiplexerTests; MultiplexerE2ETests paces requests so pymodbus
3.13's single-PDU framer stays in known-good mode.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Joseph Doherty