{"abstract":"Tunnel bytes bypass http transformation after upgrade.","category":"Proxy forwarding","checks":4,"contract":"Bounded offline decision model: tunnel bytes bypass http transformation after upgrade. Inputs are already validated protocol fields; the explicit fixtures define the supported policy, not a complete protocol implementation.","evaluation_group":"xh-tunnel-bytes-bypass-http-transformation-after-upgrade","failed_approach":"The attempted repair uses `payload` and still violates a separate fixture.","family":"xh-tunnel-bytes-bypass-http-transformation-after-upgrade","id":"FA-7016","implementations":{"attempt":{"sha256":"e2accf3d42beff6185c9d0a7c2315718a1ec9e7840090c3e58c986fdf18fd1e2","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(tunnel, payload, transform):\n    return payload\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\n_fixtures = [\"check('fixture 1', solve(True, 'abc', 'x'), 'abc')\", \"check('fixture 2', solve(False, 'abc', 'x'), 'xabc')\", \"check('fixture 3', solve(True, '', 'x'), '')\", \"check('fixture 4', solve(False, '', 'x'), 'x')\"]\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":"600d65f65ecdd5f8ce9c5505e105afd4281fcdcc3e2f17cfd438494fa31b17b0","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(tunnel, payload, transform):\n    return transform+payload\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\n_fixtures = [\"check('fixture 1', solve(True, 'abc', 'x'), 'abc')\", \"check('fixture 2', solve(False, 'abc', 'x'), 'xabc')\", \"check('fixture 3', solve(True, '', 'x'), '')\", \"check('fixture 4', solve(False, '', 'x'), 'x')\"]\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":"084629cb24f3add1f9236db2c14a435affc83ae9d9e9c64521488832a0643d2a","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(tunnel, payload, transform):\n    return payload if tunnel else transform+payload\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\n_fixtures = [\"check('fixture 1', solve(True, 'abc', 'x'), 'abc')\", \"check('fixture 2', solve(False, 'abc', 'x'), 'xabc')\", \"check('fixture 3', solve(True, '', 'x'), '')\", \"check('fixture 4', solve(False, '', 'x'), 'x')\"]\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-tunnel-bytes-bypass-http-transformation-after-upgrade","generated_at":"2026-09-29T14:38:07.655078+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"This deterministic proxy forwarding model isolates the tunnel-bytes-bypass-http-transformation-after-upgrade policy at a network component boundary.","repair":"Apply the explicit tunnel-bytes-bypass-http-transformation-after-upgrade contract, including the tested boundary and negative cases.","root_cause":"The faulty implementation uses `transform+payload` for the tunnel-bytes-bypass-http-transformation-after-upgrade decision.","sha256":"adabd2e66ee1acd0134b37f68244b88d487802bedb9649eeb82bb9f08640d7fe","title":"Tunnel bytes bypass http transformation after upgrade · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":37.72,"exit_code":1,"observations":[{"actual":"abc","check":"fixture 2","expected":"xabc","passed":false},{"actual":"","check":"fixture 3","expected":"","passed":true},{"actual":"","check":"fixture 4","expected":"x","passed":false},{"actual":"abc","check":"fixture 1","expected":"abc","passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 2\", \"actual\": \"abc\", \"expected\": \"xabc\", \"passed\": false}, {\"check\": \"fixture 3\", \"actual\": \"\", \"expected\": \"\", \"passed\": true}, {\"check\": \"fixture 4\", \"actual\": \"\", \"expected\": \"x\", \"passed\": false}, {\"check\": \"fixture 1\", \"actual\": \"abc\", \"expected\": \"abc\", \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":135.773,"exit_code":1,"observations":[{"actual":"xabc","check":"fixture 2","expected":"xabc","passed":true},{"actual":"x","check":"fixture 3","expected":"","passed":false},{"actual":"x","check":"fixture 4","expected":"x","passed":true},{"actual":"xabc","check":"fixture 1","expected":"abc","passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 2\", \"actual\": \"xabc\", \"expected\": \"xabc\", \"passed\": true}, {\"check\": \"fixture 3\", \"actual\": \"x\", \"expected\": \"\", \"passed\": false}, {\"check\": \"fixture 4\", \"actual\": \"x\", \"expected\": \"x\", \"passed\": true}, {\"check\": \"fixture 1\", \"actual\": \"xabc\", \"expected\": \"abc\", \"passed\": false}], \"passed\": false}\n"},"fixed":{"elapsed_ms":34.866,"exit_code":0,"observations":[{"actual":"xabc","check":"fixture 2","expected":"xabc","passed":true},{"actual":"","check":"fixture 3","expected":"","passed":true},{"actual":"x","check":"fixture 4","expected":"x","passed":true},{"actual":"abc","check":"fixture 1","expected":"abc","passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"fixture 2\", \"actual\": \"xabc\", \"expected\": \"xabc\", \"passed\": true}, {\"check\": \"fixture 3\", \"actual\": \"\", \"expected\": \"\", \"passed\": true}, {\"check\": \"fixture 4\", \"actual\": \"x\", \"expected\": \"x\", \"passed\": true}, {\"check\": \"fixture 1\", \"actual\": \"abc\", \"expected\": \"abc\", \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}