{"abstract":"Early final response stops request body forwarding.","category":"Proxy forwarding","checks":4,"contract":"Bounded offline decision model: early final response stops request body forwarding. Inputs are already validated protocol fields; the explicit fixtures define the supported policy, not a complete protocol implementation.","evaluation_group":"xh-early-final-response-stops-request-body-forwarding","failed_approach":"The attempted repair uses `0 if final else sent+queued` and still violates a separate fixture.","family":"xh-early-final-response-stops-request-body-forwarding","id":"FA-7026","implementations":{"attempt":{"sha256":"fccc7a4b2cf381e9ee96d8ea2c7c9e62ce49c44b64fff1ab9cc1be3cfcf257f6","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(final, queued, sent):\n    return 0 if final else sent+queued\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\n_fixtures = [\"check('fixture 1', solve(True, 10, 3), 3)\", \"check('fixture 2', solve(False, 10, 3), 13)\", \"check('fixture 3', solve(True, 0, 0), 0)\", \"check('fixture 4', solve(False, 0, 2), 2)\"]\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":"cf2127027c5a6b7b7cd057b63358d1ab105a0a0a30075f86515ab998f2f5a672","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(final, queued, sent):\n    return sent+queued\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\n_fixtures = [\"check('fixture 1', solve(True, 10, 3), 3)\", \"check('fixture 2', solve(False, 10, 3), 13)\", \"check('fixture 3', solve(True, 0, 0), 0)\", \"check('fixture 4', solve(False, 0, 2), 2)\"]\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"},"fixed":{"sha256":"4b2366b1f26fd2869b7c17a23473693959bb3dd8f44bab1b3ecf13adfb90777d","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(final, queued, sent):\n    return sent if final else sent+queued\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\n_fixtures = [\"check('fixture 1', solve(True, 10, 3), 3)\", \"check('fixture 2', solve(False, 10, 3), 13)\", \"check('fixture 3', solve(True, 0, 0), 0)\", \"check('fixture 4', solve(False, 0, 2), 2)\"]\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-early-final-response-stops-request-body-forwarding","generated_at":"2026-09-29T14:38:07.765422+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"This deterministic proxy forwarding model isolates the early-final-response-stops-request-body-forwarding policy at a network component boundary.","repair":"Apply the explicit early-final-response-stops-request-body-forwarding contract, including the tested boundary and negative cases.","root_cause":"The faulty implementation uses `sent+queued` for the early-final-response-stops-request-body-forwarding decision.","sha256":"02370cbad8925477a6d744d2e9b58d71465de0c4c9e232dbdb96ec009dae8bed","title":"Early final response stops request body forwarding · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":31.276,"exit_code":1,"observations":[{"actual":13,"check":"fixture 2","expected":13,"passed":true},{"actual":0,"check":"fixture 3","expected":0,"passed":true},{"actual":2,"check":"fixture 4","expected":2,"passed":true},{"actual":0,"check":"fixture 1","expected":3,"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 2\", \"actual\": 13, \"expected\": 13, \"passed\": true}, {\"check\": \"fixture 3\", \"actual\": 0, \"expected\": 0, \"passed\": true}, {\"check\": \"fixture 4\", \"actual\": 2, \"expected\": 2, \"passed\": true}, {\"check\": \"fixture 1\", \"actual\": 0, \"expected\": 3, \"passed\": false}], \"passed\": false}\n"},"broken":{"elapsed_ms":32.686,"exit_code":1,"observations":[{"actual":13,"check":"fixture 2","expected":13,"passed":true},{"actual":0,"check":"fixture 3","expected":0,"passed":true},{"actual":2,"check":"fixture 4","expected":2,"passed":true},{"actual":13,"check":"fixture 1","expected":3,"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 2\", \"actual\": 13, \"expected\": 13, \"passed\": true}, {\"check\": \"fixture 3\", \"actual\": 0, \"expected\": 0, \"passed\": true}, {\"check\": \"fixture 4\", \"actual\": 2, \"expected\": 2, \"passed\": true}, {\"check\": \"fixture 1\", \"actual\": 13, \"expected\": 3, \"passed\": false}], \"passed\": false}\n"},"fixed":{"elapsed_ms":38.062,"exit_code":0,"observations":[{"actual":13,"check":"fixture 2","expected":13,"passed":true},{"actual":0,"check":"fixture 3","expected":0,"passed":true},{"actual":2,"check":"fixture 4","expected":2,"passed":true},{"actual":3,"check":"fixture 1","expected":3,"passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 2\", \"actual\": 13, \"expected\": 13, \"passed\": true}, {\"check\": \"fixture 3\", \"actual\": 0, \"expected\": 0, \"passed\": true}, {\"check\": \"fixture 4\", \"actual\": 2, \"expected\": 2, \"passed\": true}, {\"check\": \"fixture 1\", \"actual\": 3, \"expected\": 3, \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}