MTConnect: detect Agent loss sooner; clamp the raised sample count to the Agent's bufferSize #846

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2026-11-11T03:27:29-05:00

dohertj2 commented

2026-11-11 03:27:29 -05:00

From the #823/#825 gate.

During an Agent outage values stay Good-but-stale for ~94–118 s until the comms-loss watchdog fires (documented contract). A refused connection is a definite loss and could mark BadNoCommunication immediately.
The adaptive raised-count ceiling (16× SampleCount) can exceed the Agent's bufferSize, now known from /probe (#825); clamp it.
Housekeeping: the shared fixture's fixture_writeback item holds an injected GATE823-OVR-* value from the gate.

From the #823/#825 gate. - During an Agent outage values stay Good-but-stale for ~94–118 s until the comms-loss watchdog fires (documented contract). A refused connection is a definite loss and could mark BadNoCommunication immediately. - The adaptive raised-count ceiling (16× SampleCount) can exceed the Agent's `bufferSize`, now known from /probe (#825); clamp it. - Housekeeping: the shared fixture's `fixture_writeback` item holds an injected `GATE823-OVR-*` value from the gate.

dohertj2 added the type:feature priority:p3 labels 2026-11-11 03:27:29 -05:00

dohertj2 referenced this issue from a commit

2026-11-11 05:24:24 -05:00

feat(mtconnect): refused Agent connections mark values BadNoCommunication after a short confirmation; clamp the raised sample count to the Agent's bufferSize (#846)

dohertj2 referenced this issue from a commit

2026-11-11 05:24:24 -05:00

Merge #839 #846 Heidenhain alarms + MTConnect comms loss

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2026-11-11 05:24:24 -05:00

fix(mtconnect): name the comms-loss status constant so the status-code parity guard can see it (#846)

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2026-11-11 05:24:28 -05:00

MTConnect: live-gate the refused-connection fast path; expose CommsLossConfirmMs in the AdminUI #852

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2026-11-11 05:24:31 -05:00

MTConnect: end-to-end gate through a deployed server and OPC UA client (adapter stop, Agent restart, stalled stream) #823

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2026-11-11 05:24:32 -05:00

MTConnect: deploy-time warning when SampleCount >= the Agent's buffer size #825

dohertj2 commented

2026-11-11 05:24:40 -05:00

Done (19ffb3c9, fc3a39b1). Pushed to master in d1b6cad2. A refused Agent connection marks subscribed values BadNoCommunication after CommsLossConfirmMs (default 2000 ms; 0 = immediate; negative = off); timeouts/resets keep the watchdog contract. The adaptive raised sample count is clamped to the Agent's bufferSize. Fixture fixture_writeback reset to UNAVAILABLE. Follow-up: #852.

Done (`19ffb3c9`, `fc3a39b1`). Pushed to master in `d1b6cad2`. A refused Agent connection marks subscribed values BadNoCommunication after `CommsLossConfirmMs` (default 2000 ms; 0 = immediate; negative = off); timeouts/resets keep the watchdog contract. The adaptive raised sample count is clamped to the Agent's `bufferSize`. Fixture `fixture_writeback` reset to UNAVAILABLE. Follow-up: #852.

dohertj2 closed this issue

2026-11-11 05:24:40 -05:00

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Reference: dohertj2/lmxopcua#846