{"abstract":"Hop timeout consumes time already spent in proxy.","category":"Proxy forwarding","checks":4,"contract":"Bounded offline decision model: hop timeout consumes time already spent in proxy. Inputs are already validated protocol fields; the explicit fixtures define the supported policy, not a complete protocol implementation.","contract_signature":"budget, elapsed","evaluation_group":"xh-hop-timeout-consumes-time-already-spent-in-proxy","failed_approach":"The attempted repair uses `budget-elapsed` and still violates a separate fixture.","family":"xh-hop-timeout-consumes-time-already-spent-in-proxy","id":"FA-7066","implementations":{"attempt":{"sha256":"043d2b8ff99d0cccf551f48e2bed35b79b59287c5dd3691b15191b8b14e77881","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport ipaddress\nimport re\nfrom urllib.parse import urlsplit, urljoin\nN = 1\nobservations = []\ndef solve(budget, elapsed):\n    return budget-elapsed\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\n_fixtures = [\"check('fixture 1', solve(10, 3), 7)\", \"check('fixture 2', solve(2, 5), 0)\", \"check('fixture 3', solve(0, 0), 0)\", \"check('fixture 4', solve(5, 5), 0)\"]\nfor _line in _fixtures[N % len(_fixtures):] + _fixtures[:N % len(_fixtures)]:\n    exec(_line)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"70b6bf884e52e789a27f9098d5103fb5dcaf7e4e70aed2e70c49a6472b8bdadb","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\nimport ipaddress\nimport re\nfrom urllib.parse import urlsplit, urljoin\nN = 1\nobservations = []\ndef solve(budget, elapsed):\n    return budget\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\n_fixtures = [\"check('fixture 1', solve(10, 3), 7)\", \"check('fixture 2', solve(2, 5), 0)\", \"check('fixture 3', solve(0, 0), 0)\", \"check('fixture 4', solve(5, 5), 0)\"]\nfor _line in _fixtures[N % len(_fixtures):] + _fixtures[:N % len(_fixtures)]:\n    exec(_line)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":"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.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"xh-hop-timeout-consumes-time-already-spent-in-proxy","generated_at":"2026-09-29T14:38:08.021128+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"This deterministic proxy forwarding model isolates the hop-timeout-consumes-time-already-spent-in-proxy policy at a network component boundary.","root_cause":"The faulty implementation uses `budget` for the hop-timeout-consumes-time-already-spent-in-proxy decision.","sha256":"1ce800388b3182f09adfa4bfe20c9a6a9404cdc40a43c5f70de94a091a8ac374","title":"Hop timeout consumes time already spent in proxy · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verified":true,"visibility":"public","verification":{"attempt":{"elapsed_ms":33.757,"exit_code":1,"observations":[{"actual":-3,"check":"fixture 2","expected":0,"passed":false},{"actual":0,"check":"fixture 3","expected":0,"passed":true},{"actual":0,"check":"fixture 4","expected":0,"passed":true},{"actual":7,"check":"fixture 1","expected":7,"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 2\", \"actual\": -3, \"expected\": 0, \"passed\": false}, {\"check\": \"fixture 3\", \"actual\": 0, \"expected\": 0, \"passed\": true}, {\"check\": \"fixture 4\", \"actual\": 0, \"expected\": 0, \"passed\": true}, {\"check\": \"fixture 1\", \"actual\": 7, \"expected\": 7, \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":34.81,"exit_code":1,"observations":[{"actual":2,"check":"fixture 2","expected":0,"passed":false},{"actual":0,"check":"fixture 3","expected":0,"passed":true},{"actual":5,"check":"fixture 4","expected":0,"passed":false},{"actual":10,"check":"fixture 1","expected":7,"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 2\", \"actual\": 2, \"expected\": 0, \"passed\": false}, {\"check\": \"fixture 3\", \"actual\": 0, \"expected\": 0, \"passed\": true}, {\"check\": \"fixture 4\", \"actual\": 5, \"expected\": 0, \"passed\": false}, {\"check\": \"fixture 1\", \"actual\": 10, \"expected\": 7, \"passed\": false}], \"passed\": false}\n"}},"member_only":{"stages":["fixed"],"fields":["implementations.fixed","verification.fixed","harness","repair"],"note":"The verified repair, its recorded checks, the repair description, and the scoring harness are available to members."}}