FA-29306 / HTTP redirects / Open access
Report redirect failures with the failing phase and completed request context: rejected target not completed · case 01
Report redirect failures with the failing phase and completed request context: the rejected target not completed branch emits an incorrect decision.
ROOT CAUSE
The rejected-target-not-completed decision uses 'completed+[attempted]'; this violates the stipulated controller policy.
VERIFIED REPAIR
At this decision use 'completed', preserving the other controller outputs.
Unsuccessful approach: The partial repair uses 'completed[:-1] if rejected else completed' and still fails an explicit boundary or control.
Case contract
Report redirect failures with the failing phase and completed request context. The explicit fixture inputs and outputs define a bounded offline policy; request identity must accompany the decision.
Why this case matters
Models a redirect controller decision before following a target or exposing a redirect result.
1 / The failure
Exit 1"""Failure Map reference implementation. Python standard library only."""
import json
from urllib.parse import urlsplit, unquote, quote
import posixpath
import re
N = 1
observations = []
def solve(request, phase, code, completed, attempted, rejected, original):
return {'request': request, 'decision': [phase, original, attempted, completed+[attempted], code if code is not None else 'none', code is not None, completed[-1] if completed else None, phase in ('parse','policy'), completed, rejected or phase == 'parse']}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('fixture 1', solve('/requests/' + str(N) + '/0', 'parse', 'invalid-target', ['/a'], 'bad%', True, '/a'), {'request': '/requests/' + str(N) + '/0', 'decision': ['parse', '/a', 'bad%', ['/a'], 'invalid-target', True, '/a', True, ['/a'], True]})
check('fixture 2', solve('/requests/' + str(N) + '/1', 'policy', 'blocked', ['/a', '/b'], '/c', True, '/a'), {'request': '/requests/' + str(N) + '/1', 'decision': ['policy', '/a', '/c', ['/a', '/b'], 'blocked', True, '/b', True, ['/a', '/b'], True]})
check('fixture 3', solve('/requests/' + str(N) + '/2', 'dispatch', 'closed', ['/a'], '/b', False, '/a'), {'request': '/requests/' + str(N) + '/2', 'decision': ['dispatch', '/a', '/b', ['/a'], 'closed', True, '/a', False, ['/a'], False]})
check('fixture 4', solve('/requests/' + str(N) + '/3', 'response', 'body-error', [], '/x', False, '/x'), {'request': '/requests/' + str(N) + '/3', 'decision': ['response', '/x', '/x', [], 'body-error', True, None, False, [], False]})
check('fixture 5', solve('/requests/' + str(N) + '/4', 'complete', None, ['/a', '/b'], '/b', False, '/a'), {'request': '/requests/' + str(N) + '/4', 'decision': ['complete', '/a', '/b', ['/a', '/b'], 'none', False, '/b', False, ['/a', '/b'], False]})
check('fixture 6', solve('/requests/' + str(N) + '/5', 'policy', 'blocked', [], '/x', True, '/x'), {'request': '/requests/' + str(N) + '/5', 'decision': ['policy', '/x', '/x', [], 'blocked', True, None, True, [], True]})
check('fixture 7', solve('/requests/' + str(N) + '/6', 'parse', 'invalid-target', ['/z', '/a'], 'bad%', False, '/z'), {'request': '/requests/' + str(N) + '/6', 'decision': ['parse', '/z', 'bad%', ['/z', '/a'], 'invalid-target', True, '/a', True, ['/z', '/a'], True]})
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 1 | {'decision': ['parse', '/a', 'bad%', ['/a', 'bad%'], 'invalid-target', True, '/a', True, ['/a'], True], 'request': '/requests/1/0'} | {'decision': ['parse', '/a', 'bad%', ['/a'], 'invalid-target', True, '/a', True, ['/a'], True], 'request': '/requests/1/0'} | Failed |
| fixture 2 | {'decision': ['policy', '/a', '/c', ['/a', '/b', '/c'], 'blocked', True, '/b', True, ['/a', '/b'], True], 'request': '/requests/1/1'} | {'decision': ['policy', '/a', '/c', ['/a', '/b'], 'blocked', True, '/b', True, ['/a', '/b'], True], 'request': '/requests/1/1'} | Failed |
| fixture 3 | {'decision': ['dispatch', '/a', '/b', ['/a', '/b'], 'closed', True, '/a', False, ['/a'], False], 'request': '/requests/1/2'} | {'decision': ['dispatch', '/a', '/b', ['/a'], 'closed', True, '/a', False, ['/a'], False], 'request': '/requests/1/2'} | Failed |
| fixture 4 | {'decision': ['response', '/x', '/x', ['/x'], 'body-error', True, None, False, [], False], 'request': '/requests/1/3'} | {'decision': ['response', '/x', '/x', [], 'body-error', True, None, False, [], False], 'request': '/requests/1/3'} | Failed |
| fixture 5 | {'decision': ['complete', '/a', '/b', ['/a', '/b', '/b'], 'none', False, '/b', False, ['/a', '/b'], False], 'request': '/requests/1/4'} | {'decision': ['complete', '/a', '/b', ['/a', '/b'], 'none', False, '/b', False, ['/a', '/b'], False], 'request': '/requests/1/4'} | Failed |
| fixture 6 | {'decision': ['policy', '/x', '/x', ['/x'], 'blocked', True, None, True, [], True], 'request': '/requests/1/5'} | {'decision': ['policy', '/x', '/x', [], 'blocked', True, None, True, [], True], 'request': '/requests/1/5'} | Failed |
| fixture 7 | {'decision': ['parse', '/z', 'bad%', ['/z', '/a', 'bad%'], 'invalid-target', True, '/a', True, ['/z', '/a'], True], 'request': '/requests/1/6'} | {'decision': ['parse', '/z', 'bad%', ['/z', '/a'], 'invalid-target', True, '/a', True, ['/z', '/a'], True], 'request': '/requests/1/6'} | Failed |
SHA-256 / 6337b0b971580c3592942d2b294e65e691603076967518743e6c0b840b2765e5
2 / The unsuccessful fix
Exit 1"""Failure Map reference implementation. Python standard library only."""
import json
from urllib.parse import urlsplit, unquote, quote
import posixpath
import re
N = 1
observations = []
def solve(request, phase, code, completed, attempted, rejected, original):
return {'request': request, 'decision': [phase, original, attempted, completed[:-1] if rejected else completed, code if code is not None else 'none', code is not None, completed[-1] if completed else None, phase in ('parse','policy'), completed, rejected or phase == 'parse']}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('fixture 1', solve('/requests/' + str(N) + '/0', 'parse', 'invalid-target', ['/a'], 'bad%', True, '/a'), {'request': '/requests/' + str(N) + '/0', 'decision': ['parse', '/a', 'bad%', ['/a'], 'invalid-target', True, '/a', True, ['/a'], True]})
check('fixture 2', solve('/requests/' + str(N) + '/1', 'policy', 'blocked', ['/a', '/b'], '/c', True, '/a'), {'request': '/requests/' + str(N) + '/1', 'decision': ['policy', '/a', '/c', ['/a', '/b'], 'blocked', True, '/b', True, ['/a', '/b'], True]})
check('fixture 3', solve('/requests/' + str(N) + '/2', 'dispatch', 'closed', ['/a'], '/b', False, '/a'), {'request': '/requests/' + str(N) + '/2', 'decision': ['dispatch', '/a', '/b', ['/a'], 'closed', True, '/a', False, ['/a'], False]})
check('fixture 4', solve('/requests/' + str(N) + '/3', 'response', 'body-error', [], '/x', False, '/x'), {'request': '/requests/' + str(N) + '/3', 'decision': ['response', '/x', '/x', [], 'body-error', True, None, False, [], False]})
check('fixture 5', solve('/requests/' + str(N) + '/4', 'complete', None, ['/a', '/b'], '/b', False, '/a'), {'request': '/requests/' + str(N) + '/4', 'decision': ['complete', '/a', '/b', ['/a', '/b'], 'none', False, '/b', False, ['/a', '/b'], False]})
check('fixture 6', solve('/requests/' + str(N) + '/5', 'policy', 'blocked', [], '/x', True, '/x'), {'request': '/requests/' + str(N) + '/5', 'decision': ['policy', '/x', '/x', [], 'blocked', True, None, True, [], True]})
check('fixture 7', solve('/requests/' + str(N) + '/6', 'parse', 'invalid-target', ['/z', '/a'], 'bad%', False, '/z'), {'request': '/requests/' + str(N) + '/6', 'decision': ['parse', '/z', 'bad%', ['/z', '/a'], 'invalid-target', True, '/a', True, ['/z', '/a'], True]})
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 1 | {'decision': ['parse', '/a', 'bad%', [], 'invalid-target', True, '/a', True, ['/a'], True], 'request': '/requests/1/0'} | {'decision': ['parse', '/a', 'bad%', ['/a'], 'invalid-target', True, '/a', True, ['/a'], True], 'request': '/requests/1/0'} | Failed |
| fixture 2 | {'decision': ['policy', '/a', '/c', ['/a'], 'blocked', True, '/b', True, ['/a', '/b'], True], 'request': '/requests/1/1'} | {'decision': ['policy', '/a', '/c', ['/a', '/b'], 'blocked', True, '/b', True, ['/a', '/b'], True], 'request': '/requests/1/1'} | Failed |
| fixture 3 | {'decision': ['dispatch', '/a', '/b', ['/a'], 'closed', True, '/a', False, ['/a'], False], 'request': '/requests/1/2'} | {'decision': ['dispatch', '/a', '/b', ['/a'], 'closed', True, '/a', False, ['/a'], False], 'request': '/requests/1/2'} | Passed |
| fixture 4 | {'decision': ['response', '/x', '/x', [], 'body-error', True, None, False, [], False], 'request': '/requests/1/3'} | {'decision': ['response', '/x', '/x', [], 'body-error', True, None, False, [], False], 'request': '/requests/1/3'} | Passed |
| fixture 5 | {'decision': ['complete', '/a', '/b', ['/a', '/b'], 'none', False, '/b', False, ['/a', '/b'], False], 'request': '/requests/1/4'} | {'decision': ['complete', '/a', '/b', ['/a', '/b'], 'none', False, '/b', False, ['/a', '/b'], False], 'request': '/requests/1/4'} | Passed |
| fixture 6 | {'decision': ['policy', '/x', '/x', [], 'blocked', True, None, True, [], True], 'request': '/requests/1/5'} | {'decision': ['policy', '/x', '/x', [], 'blocked', True, None, True, [], True], 'request': '/requests/1/5'} | Passed |
| fixture 7 | {'decision': ['parse', '/z', 'bad%', ['/z', '/a'], 'invalid-target', True, '/a', True, ['/z', '/a'], True], 'request': '/requests/1/6'} | {'decision': ['parse', '/z', 'bad%', ['/z', '/a'], 'invalid-target', True, '/a', True, ['/z', '/a'], True], 'request': '/requests/1/6'} | Passed |
SHA-256 / 89f6f672062affe3ebcfa1c13918a3347acf2fca61fcf1be00b88b41389d000e
3 / The verified repair
Exit 0"""Failure Map reference implementation. Python standard library only."""
import json
from urllib.parse import urlsplit, unquote, quote
import posixpath
import re
N = 1
observations = []
def solve(request, phase, code, completed, attempted, rejected, original):
return {'request': request, 'decision': [phase, original, attempted, completed, code if code is not None else 'none', code is not None, completed[-1] if completed else None, phase in ('parse','policy'), completed, rejected or phase == 'parse']}
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('fixture 1', solve('/requests/' + str(N) + '/0', 'parse', 'invalid-target', ['/a'], 'bad%', True, '/a'), {'request': '/requests/' + str(N) + '/0', 'decision': ['parse', '/a', 'bad%', ['/a'], 'invalid-target', True, '/a', True, ['/a'], True]})
check('fixture 2', solve('/requests/' + str(N) + '/1', 'policy', 'blocked', ['/a', '/b'], '/c', True, '/a'), {'request': '/requests/' + str(N) + '/1', 'decision': ['policy', '/a', '/c', ['/a', '/b'], 'blocked', True, '/b', True, ['/a', '/b'], True]})
check('fixture 3', solve('/requests/' + str(N) + '/2', 'dispatch', 'closed', ['/a'], '/b', False, '/a'), {'request': '/requests/' + str(N) + '/2', 'decision': ['dispatch', '/a', '/b', ['/a'], 'closed', True, '/a', False, ['/a'], False]})
check('fixture 4', solve('/requests/' + str(N) + '/3', 'response', 'body-error', [], '/x', False, '/x'), {'request': '/requests/' + str(N) + '/3', 'decision': ['response', '/x', '/x', [], 'body-error', True, None, False, [], False]})
check('fixture 5', solve('/requests/' + str(N) + '/4', 'complete', None, ['/a', '/b'], '/b', False, '/a'), {'request': '/requests/' + str(N) + '/4', 'decision': ['complete', '/a', '/b', ['/a', '/b'], 'none', False, '/b', False, ['/a', '/b'], False]})
check('fixture 6', solve('/requests/' + str(N) + '/5', 'policy', 'blocked', [], '/x', True, '/x'), {'request': '/requests/' + str(N) + '/5', 'decision': ['policy', '/x', '/x', [], 'blocked', True, None, True, [], True]})
check('fixture 7', solve('/requests/' + str(N) + '/6', 'parse', 'invalid-target', ['/z', '/a'], 'bad%', False, '/z'), {'request': '/requests/' + str(N) + '/6', 'decision': ['parse', '/z', 'bad%', ['/z', '/a'], 'invalid-target', True, '/a', True, ['/z', '/a'], True]})
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 1 | {'decision': ['parse', '/a', 'bad%', ['/a'], 'invalid-target', True, '/a', True, ['/a'], True], 'request': '/requests/1/0'} | {'decision': ['parse', '/a', 'bad%', ['/a'], 'invalid-target', True, '/a', True, ['/a'], True], 'request': '/requests/1/0'} | Passed |
| fixture 2 | {'decision': ['policy', '/a', '/c', ['/a', '/b'], 'blocked', True, '/b', True, ['/a', '/b'], True], 'request': '/requests/1/1'} | {'decision': ['policy', '/a', '/c', ['/a', '/b'], 'blocked', True, '/b', True, ['/a', '/b'], True], 'request': '/requests/1/1'} | Passed |
| fixture 3 | {'decision': ['dispatch', '/a', '/b', ['/a'], 'closed', True, '/a', False, ['/a'], False], 'request': '/requests/1/2'} | {'decision': ['dispatch', '/a', '/b', ['/a'], 'closed', True, '/a', False, ['/a'], False], 'request': '/requests/1/2'} | Passed |
| fixture 4 | {'decision': ['response', '/x', '/x', [], 'body-error', True, None, False, [], False], 'request': '/requests/1/3'} | {'decision': ['response', '/x', '/x', [], 'body-error', True, None, False, [], False], 'request': '/requests/1/3'} | Passed |
| fixture 5 | {'decision': ['complete', '/a', '/b', ['/a', '/b'], 'none', False, '/b', False, ['/a', '/b'], False], 'request': '/requests/1/4'} | {'decision': ['complete', '/a', '/b', ['/a', '/b'], 'none', False, '/b', False, ['/a', '/b'], False], 'request': '/requests/1/4'} | Passed |
| fixture 6 | {'decision': ['policy', '/x', '/x', [], 'blocked', True, None, True, [], True], 'request': '/requests/1/5'} | {'decision': ['policy', '/x', '/x', [], 'blocked', True, None, True, [], True], 'request': '/requests/1/5'} | Passed |
| fixture 7 | {'decision': ['parse', '/z', 'bad%', ['/z', '/a'], 'invalid-target', True, '/a', True, ['/z', '/a'], True], 'request': '/requests/1/6'} | {'decision': ['parse', '/z', 'bad%', ['/z', '/a'], 'invalid-target', True, '/a', True, ['/z', '/a'], True], 'request': '/requests/1/6'} | Passed |
SHA-256 / 57c5841b0a92b1cfb17b555fae4303a39a42f0f62f8c1cb839e48c41e6f3e6fc
Verification & scope
Stipulated offline redirect policy, not a complete HTTP, browser, URL, cache, or security implementation. Numbered variants vary request correlation identity. 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 2026-09-29T14:41:41.972716+00:00.
Case digest / 48c47976a409c699babccc7deb68559211361323d7843121923cfc56c95cff5b