FA-7721 / Connection lifecycle / Open access

Pool absolute lifetime is not reset by recent activity · case 01

Pool absolute lifetime is not reset by recent activity.

Verified by executionVariant 1 · 4 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

The faulty implementation uses `True` for the pool-absolute-lifetime-is-not-reset-by-recent-activity decision.

VERIFIED REPAIR

Apply the explicit pool-absolute-lifetime-is-not-reset-by-recent-activity contract, including the tested boundary and negative cases.

Unsuccessful approach: The attempted repair uses `now-created <= lifetime` and still violates a separate fixture.

Case contract

Bounded offline decision model: pool absolute lifetime is not reset by recent activity. Inputs are already validated protocol fields; the explicit fixtures define the supported policy, not a complete protocol implementation.

Why this case matters

This deterministic connection lifecycle model isolates the pool-absolute-lifetime-is-not-reset-by-recent-activity policy at a network component boundary.

1 / The failure

Exit 1

"""Failure Map reference implementation. Python standard library only."""
import json
import ipaddress
import re
from urllib.parse import urlsplit, urljoin
N = 1
observations = []
def solve(now, created, lifetime):
    return True
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
_fixtures = ["check('fixture 1', solve(100, 0, 100), False)", "check('fixture 2', solve(99, 0, 100), True)", "check('fixture 3', solve(0, 0, 0), False)", "check('fixture 4', solve(10, 5, 20), True)"]
for _line in _fixtures[N % len(_fixtures):] + _fixtures[:N % len(_fixtures)]:
    exec(_line)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)

Boundary fixture	Actual	Expected	Outcome
fixture 2	`True`	`True`	Passed
fixture 3	`True`	`False`	Failed
fixture 4	`True`	`True`	Passed
fixture 1	`True`	`False`	Failed

SHA-256 / bde5337070b1186d9dbb879f59b9dd8a5ec1b78488c8508aaa4b7b3e915e6a1f

2 / The unsuccessful fix

Exit 1

"""Failure Map reference implementation. Python standard library only."""
import json
import ipaddress
import re
from urllib.parse import urlsplit, urljoin
N = 1
observations = []
def solve(now, created, lifetime):
    return now-created <= lifetime
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
_fixtures = ["check('fixture 1', solve(100, 0, 100), False)", "check('fixture 2', solve(99, 0, 100), True)", "check('fixture 3', solve(0, 0, 0), False)", "check('fixture 4', solve(10, 5, 20), True)"]
for _line in _fixtures[N % len(_fixtures):] + _fixtures[:N % len(_fixtures)]:
    exec(_line)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)

Boundary fixture	Actual	Expected	Outcome
fixture 2	`True`	`True`	Passed
fixture 3	`True`	`False`	Failed
fixture 4	`True`	`True`	Passed
fixture 1	`True`	`False`	Failed

SHA-256 / 5d8b8bd4e5bb6fbba3668bf8abf81790bef5f3274eb994f94af047527dea0e3d

3 / The verified repair

Exit 0

"""Failure Map reference implementation. Python standard library only."""
import json
import ipaddress
import re
from urllib.parse import urlsplit, urljoin
N = 1
observations = []
def solve(now, created, lifetime):
    return now-created < lifetime
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
_fixtures = ["check('fixture 1', solve(100, 0, 100), False)", "check('fixture 2', solve(99, 0, 100), True)", "check('fixture 3', solve(0, 0, 0), False)", "check('fixture 4', solve(10, 5, 20), True)"]
for _line in _fixtures[N % len(_fixtures):] + _fixtures[:N % len(_fixtures)]:
    exec(_line)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)

Boundary fixture	Actual	Expected	Outcome
fixture 2	`True`	`True`	Passed
fixture 3	`False`	`False`	Passed
fixture 4	`True`	`True`	Passed
fixture 1	`False`	`False`	Passed

SHA-256 / bb0085cfc50f02100817e5a28eb6fb1134c78418aefe10fa77ea72f6b7747fff

Verification & scope

Bounded deterministic policy model over validated inputs; not a complete protocol stack or an interoperability claim. The five variants rotate the same explicit fixture set. This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.

Observations recorded using Python 3.12.14 at 2026-09-29T14:38:14.688058+00:00.

Case digest / 47ae7b0b8e3aaf15bed5a02ac198e1f91e086d7a0b0f121ee65487ddcf6f0824