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Stable client operation identity over retries: Admission consumption violates retry transition semantics · case 04

Admission consumption violates retry transition semantics

Member previewVariant 4 · 3 implementations · 6 checks per implementation

Case contract

begin(provided key or None,body) starts a logical operation and advances a local operation serial. Generated key is operation serial; explicit keys including zero remain exact. send(body) first sends only matching snapshotted body. uncertain authorizes a resend; reject is terminal; success is terminal. Retried sends reuse the initial key. Return sent key/body pairs or refusal reason.

Why this case matters

Offline deterministic model of HTTP request retries.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
1	`[[1, 4], [1, 4], [1, 4], [1, 4]]`	`[[1, 4], [1, 4], "blocked", "blocked"]`	Failed

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