Native AbCip runtime: STRING capacity, mistype churn, malformed-name device backoff #570

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2026-10-07T19:02:14-04:00

dohertj2 commented

2026-10-07 19:02:14 -04:00

Context: native .NET Allen-Bradley transport work (plan docs/plans/2026-10-07-native-ab-transport.md, branch feat/native-ab-transport, not yet merged). Parked as a Minor during per-task review — none of these block the plan.

Native AbCip tag runtime (NativeAbCipTagRuntime) follow-ups:

STRING capacity counts the alignment pad (84 vs the true 82).
A mistyped tag causes evict/re-create churn (throttled, but repeated).
A malformed tag name throws raw and puts the whole device into backoff — identical to libplctag (ErrorBadParam → BadConnection), but a per-tag BadConfigurationError would avoid blacking out healthy tags on the same device.
REAL decode over a 0xD4 (LWORD) type code is not checked.

Context: native .NET Allen-Bradley transport work (plan `docs/plans/2026-10-07-native-ab-transport.md`, branch `feat/native-ab-transport`, not yet merged). Parked as a Minor during per-task review — none of these block the plan. Native AbCip tag runtime (`NativeAbCipTagRuntime`) follow-ups: - [ ] STRING capacity counts the alignment pad (84 vs the true 82). - [ ] A mistyped tag causes evict/re-create churn (throttled, but repeated). - [ ] A malformed tag name throws raw and puts the whole device into backoff — identical to libplctag (`ErrorBadParam` → `BadConnection`), but a per-tag `BadConfigurationError` would avoid blacking out healthy tags on the same device. - [ ] REAL decode over a 0xD4 (LWORD) type code is not checked.

dohertj2 added the driver/abcip label 2026-10-07 19:02:14 -04:00

dohertj2 referenced this issue from a commit

2026-10-08 01:53:39 -04:00

fix(abcip): native runtime STRING capacity, mistype churn, malformed-name config error, LWORD type check; non-blocking lease release (#570, #579)

dohertj2 commented

2026-10-08 01:53:50 -04:00

Fixed: STRING capacity 82; existence-read type refusal no longer churns runtime/connection; malformed tag names → per-tag BadConfigurationError without device backoff or health change; 0xD1/0xD2/0xD4 type-checked by width. Residual: on the libplctag transport a name libplctag rejects still backs the device off (adapter unchanged). (merge 501f6ea4 on master, pushed 2026-10-08)

Fixed: STRING capacity 82; existence-read type refusal no longer churns runtime/connection; malformed tag names → per-tag BadConfigurationError without device backoff or health change; 0xD1/0xD2/0xD4 type-checked by width. Residual: on the libplctag transport a name libplctag rejects still backs the device off (adapter unchanged). (merge `501f6ea4` on master, pushed 2026-10-08)

dohertj2 closed this issue

2026-10-08 01:53:51 -04:00

dohertj2 referenced this issue

2026-10-08 02:31:08 -04:00

Ab.Transport: offline/simulator test gaps left by #565, #570, #579 #593

dohertj2 referenced this issue from a commit

2026-10-08 09:03:17 -04:00

fix(abcip): libplctag ErrorBadParam at tag create is a per-tag config error, no device backoff (#570, #593)

dohertj2 referenced this issue

2026-10-08 09:24:24 -04:00

Ab.Transport: offline/simulator test gaps left by #565, #570, #579 #593

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