fix(streaming): carry three transport hardening PRs and close the reordered freeform wrapper gap - #5203
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Included review availability: Your plan provides up to 10 included reviews per hour; 1 remains after this review. 📝 WalkthroughWalkthroughThe pull request updates Responses freeform-wrapper streaming, Devin reasoning replay, Grok protobuf decoding, and hosted image-generation tool restoration. It also adds focused tests, documentation, and test-layout registrations. ChangesFreeform wrapper streaming
Devin reasoning replay
Grok protobuf decoding
Hosted tool restoration
Priority: ➖ Normal Estimated code review effort: 4 (Complex) | ~45 minutes Change: Bug fix · Severity of issue fixed: Medium Sequence Diagram(s)sequenceDiagram
participant DirectResponsesSSE
participant progressiveFreeformInput
participant scanFreeformWrapper
participant unwrapFreeformToolInput
DirectResponsesSSE->>progressiveFreeformInput: receive partial tool input
progressiveFreeformInput->>scanFreeformWrapper: classify JSON prefix
scanFreeformWrapper-->>progressiveFreeformInput: input, raw, or hold
progressiveFreeformInput->>DirectResponsesSSE: publish progressive delta or hold
DirectResponsesSSE->>progressiveFreeformInput: receive complete object
progressiveFreeformInput->>unwrapFreeformToolInput: unwrap completed wrapper
unwrapFreeformToolInput-->>DirectResponsesSSE: final tool input
🚥 Pre-merge checks | ✅ 3 | ❌ 2❌ Failed checks (1 warning, 1 inconclusive)
✅ Passed checks (3 passed)
Full details: Linked Issues checkExplanation For Resolution Provide the hosted execution result for Full details: Out of Scope Changes checkExplanation The PR includes changes unrelated to ✨ Finishing Touches📝 Generate docstrings
🧪 Generate unit tests (beta)
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| // Indices arrive in increasing order, so the first stripped container is already | ||
| // the minimum — tracking it directly avoids spreading an attacker-sized Set into | ||
| // Math.min's argument list. | ||
| let firstStrippedAdditionalToolsIndex: number | undefined; |
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The commit message explicitly says this change carries #5132, #5150, and #5140, but commit 3fe3dca9577baa76a6bff24dc46dcf9657a198b3 contains no Co-authored-by trailer. Referencing the source PRs in prose does not credit their author in GitHub’s contributor graph; add the original contributor’s trailer to the PR description or a branch commit so it survives the squash.
AGENTS.md reference: AGENTS.md:L337-L347
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The trailers are present. Co-authored-by: luvs01 <27862058+luvs01@users.noreply.github.com> is on each of the three carrying commits: c9893d2ca5 for #5132, 351ea99c87 for #5150, and c906f8128a for #5140. The fourth commit is this lane's own work, so it correctly carries none. .github/scripts/pr-carry-attribution.cjs is the gate AGENTS.md names for this, and hygiene passes on the current head.
The earlier hygiene failure on ba773dae6d was real, but it was not about credit. The Devin commit described protobuf fields as "#11" and "#12", and the carry-window regex read those as pull request references in this repository, then failed to resolve #11. They are written as "field 11" and "field 12" now.
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Inline comments:
In `@src/responses/progressive-freeform-input.ts`:
- Line 127: Update progressiveFreeformInput so the JSON.parse(args) fallback is
not executed for budget-exhausted, incomplete argument deltas; only parse after
authoritative argument completion, or preserve parser state across deltas. Keep
the existing completion repair path and preview behavior unchanged, and add
regression coverage for repeated closing braces after
MAX_FREEFORM_WRAPPER_SCAN_CHARS is exceeded.
In `@tests/providers/xai/grok-reset-coupons.test.ts`:
- Around line 139-209: Run bun run test:changed, bun run typecheck, and bun run
privacy:scan for this change, then report each command’s result. Do not run
platform-specific validation.
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📒 Files selected for processing (17)
scripts/test-layout/layout.jsonsrc/adapters/devin.tssrc/adapters/openai-responses/image-gen.tssrc/grok/reset-coupons.tssrc/responses/apply-patch-envelope.tssrc/responses/freeform-wrapper-scan.tssrc/responses/progressive-freeform-input.tssrc/responses/reasoning-envelope.tsstructure/adapters/registry.mdstructure/transports/inventory.mdstructure/transports/responses.mdtests/adapters/bridge.test.tstests/fixtures/test-layout-expected.jsontests/providers/devin-hardening.test.tstests/providers/xai/grok-reset-coupons.test.tstests/responses/responses-freeform-wrapper-keys.test.tstests/responses/responses-hosted-tool-min-spread.test.ts
💤 Files with no reviewable changes (1)
- src/responses/apply-patch-envelope.ts
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preferConfiguredHostedTools collected the index of every stripped additional_tools container into a Set and spread it into Math.min to find the first one. The set size is request-controlled, so a body carrying enough additional_tools containers exceeds the engine argument-count limit and throws RangeError, aborting request normalization before dispatch. Indices arrive in increasing order, so the first stripped index is already the minimum, and a scalar captured during the same map pass replaces the reduction. The regression lives in its own file because tests/responses/openai-responses-passthrough.test.ts sits at its file-size ratchet cap. It covers the Math.min argument count and, added while carrying, the restoration target the original case could not separate: with a non-carrier at index 0 and an unstripped container at index 1, the hosted declaration must land in the container at index 2 and appear exactly once. Carried from #5132. Co-authored-by: luvs01 <27862058+luvs01@users.noreply.github.com>
The reset-coupon decoders trusted provider-controlled varints and length prefixes. decodeVarint accumulated with a 32-bit bitwise shift, so a six-byte varint could set the sign bit and return a NEGATIVE length; the length-delimited branches then did offset += bytesRead + len and moved the cursor BACKWARDS, which is a non-terminating loop on a hostile or corrupt gRPC-web body rather than merely a wrong value. A truncated varint returned its partial accumulation, and a declared length past the end silently produced a short subarray. decodeVarint now validates the offset, accumulates by multiplication so the value cannot wrap, throws once a part leaves the safe-integer range, and throws on a varint with no terminator instead of returning a partial value. It also enforces the ten-byte protobuf varint limit explicitly, because the safe-integer guard cannot stand in for a length bound: a continuation byte with no payload bits contributes a part of zero, which is a safe integer, so an arbitrarily long run of 0x80 decoded as a valid zero and an overlong zero length normalized a malformed body into an empty coupon list. The new decodeLength bounds every wire-type-2 field inside its enclosing message, and all three branches route through it. This turns a malformed response into a thrown error where it previously returned partially decoded coupons. Both callers in src/server/management/grok-coupon-routes.ts already wrap getGrokRemainingResets in try/catch and answer 502, and a new case asserts the throw at that boundary rather than only at the decoder, so the endpoint reports the upstream failure instead of acting on a tokenId recovered from garbage. Wire types 1 and 5 still stop iteration rather than throwing; that pre-existing silent drop is unchanged. Carried from #5150. Co-authored-by: luvs01 <27862058+luvs01@users.noreply.github.com>
assistantThinking concatenated every thinking block and independently picked the last available signature, so one block text rode ChatMessagePrompt field 11 paired with a different block signature at field 12. Cognition validates field 12 against the thinking it attests, so that pairing is an invalid replay. The blocks that reach this point are separately signed by construction: src/responses/parser.ts merges CONSECUTIVE unsigned reasoning parts into one, so more than one surviving text-bearing block means more than one real attestation. The pair is now only formed when it is real. Every block with text is still replayed at field 11, and field 12 is attached only when the text replayed IS the text that signature attests, which is the single-block case. Several independently signed blocks send the joined chain unsigned. Keeping only the final block instead would trade an invalid pairing for silently discarding reasoning the turn produced, which the history replay this function exists for cannot afford. A signature-only block, which the parser emits for an encrypted-only reasoning item, contributes neither text nor signature; the turn-dropping guard in mapOneMessage already keyed on reasoning.thinking, so no assistant turn changes its drop decision. The parser also parks a JSON.stringify of the whole reasoning item in the signature field of an UNSIGNED thinking part so the opaque item survives a same-provider round trip. That dump is provider state, not an attestation, and it was reaching field 12 verbatim. isProviderIssuedThinkingSignature now denies exactly that shape, and it lives in src/responses/reasoning-envelope.ts beside the representation it describes rather than as a private copy in one adapter. It stays a deny-list: field 12 is opaque, so an allow-list modelled on the base64 spelling of an Anthropic signature would drop a JWT-shaped or JSON-shaped token the service really issued. A counter-case test pins that those survive. Carried from #5140. Co-authored-by: luvs01 <27862058+luvs01@users.noreply.github.com>
The progressive decoder located a wrapper by comparing the buffer against the literal opening for each key it knew. unwrapFreeformToolInput decides the COMPLETED input with JSON.parse, which cares about neither property order nor how a name is spelled, so two spellings of the same wrapper matched nothing at all: {"metadata":1,"input":"cmd"} and a canonical key written with a \\u0069 escape both streamed the raw object as deltas and then completed as cmd. The routed path hid this behind its own hold for unrecognized objects; the direct Responses bridge published the wrapper syntax that completion then removed. This is the third spelling of the disagreement #5047 and #5129 closed for compact and whitespace wrappers.
The prefix is now scanned as JSON instead of matched as text, in a new src/responses/freeform-wrapper-scan.ts. It answers only which wrapper the completed text will unwrap to: an own input with a string value streams progressively, because completion gives it precedence over everything else in the object whatever its position; an input with a non-string value, a text that is not an object, and an object JSON.parse can no longer accept publish their own bytes, because that is what completion returns for them; every other object holds until it parses, because a key that has not arrived can still change the answer. Property names are decoded with JSON.parse rather than by hand, since a second decoder beside it is how this defect arose.
That last rule narrows the direct bridge and the narrowing is deliberate. A parseable object that is not a wrapper now arrives in one delta when it closes, where it used to stream as it was generated. No prefix of it can be published safely, because input can still follow any property, and routed restoration has held exactly these bodies since #5047 — this is the two paths agreeing rather than a new restriction on one. Bodies that are not objects, which is what an exec program or a patch envelope looks like, are unaffected. structure/transports/responses.md states the cost rather than repeating the old claim that raw input is always progressive, and the bridge test comment that asserted the old timing is corrected.
Holding every undecided object subsumes the fallback keys, which only unwrap as the single string field and so are decidable by no prefix. freeformFallbackKeys existed solely to let the streaming side hold them and is removed with its last caller. Containers are walked with an explicit stack, not recursion, because the value being skipped is provider-controlled. Classification is clamped to MAX_FREEFORM_WRAPPER_SCAN_CHARS, and the release parse runs only where the scan actually SAW the object close. Every other hold stays held: an incomplete object has nothing to parse, and re-reading a budget-exhausted buffer on every delta whose last character happens to be a brace is quadratic work for a delta that would arrive in the same instant as the authoritative completion behind it. The previous code parsed the whole buffer on every delta once a fallback wrapper was committed.
Duplicate input keys and wrappers that turn invalid after a valid prefix was published remain the same bounded exceptions, now asserted through a reordered wrapper as well. The regression records the deltas a caller would receive and also the values the decoder PROPOSED that do not extend what was already published: both callers drop those, so a test that only mirrored the callers would stay green while the decoder proposed a retraction. It asserts liveness too, so satisfying agreement by holding everything fails, and it pins that an oversized value full of braces publishes nothing.
Closes #5151.
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리뷰 · 우선순위 70 / 80요청이 모델로 나가기 전과, 답이 돌아오는 길에 있는 버그 네 개를 한 PR에 모았습니다. 베이스는 이미지 도구를 되돌릴 때, 지운 칸의 번호를 Grok 쿠폰 응답의 길이 숫자는 비트 밀기라서, 길면 음수가 됐습니다. 음수만큼 커서가 뒤로 가면 읽기가 끝나지 않습니다. 이제 열 바이트를 넘기거나 안전한 정수 밖이면 에러를 던집니다. 그 에러를 받는 쪽은 이미 502로 답합니다. Devin은 생각 여러 개를 이어 붙이면서 서명은 마지막 것을 달았습니다. 글과 서명이 다른 덩어리의 것이면 서버가 거절합니다. 이제 글은 전부 다시 보내고, 서명은 덩어리가 하나이고 그 글에 대한 서명일 때만 붙입니다. 파서가 넣어 둔 자기 JSON은 서명으로 안 보냅니다. 자유 형식 도구의 미리보기는 리눅스와 윈도우 테스트는 통과했습니다. macOS 검사는 아직 안 끝났습니다. 본문은 로컬에서 테스트를 안 돌렸다고 적혀 있습니다. 아래 한 입력만 스캐너에 넣어 확인했습니다.
메인테이너의 판단이 필요한 지점 문자 객체가 래퍼가 아닐 때 한 덩어리로 보내는 변화는 본문에 적혀 있습니다. 직접 연결만 느려 보이고, 돌아가는 쪽과 맞춘 것입니다. 생각 덩어리가 둘 이상이면 서명을 뺍니다. 글은 줄바꿈으로 잇습니다. 서명이 틀린 쌍보다 안전하고, 서버가 서명을 여러 개 받을 칸은 없습니다.
너의 추천 252행은 문자열이 아닌 이 댓글은 grok-bot이 작성했습니다 |
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Summary
Four ordered commits on the streaming and transport path. Three of them land open contributor
pull requests after review; the fourth closes a preview/completion disagreement from #5151.
fix(responses): avoid spreading stripped tool indices into Math.minfix(grok): reject unsafe protobuf response lengthsfix(devin): preserve reasoning signature associationfix(responses): recognize reordered and escaped freeform wrapper keys1 — hosted-tool restoration.
preferConfiguredHostedToolscollected the index of everystripped
additional_toolscontainer into aSetand spread it intoMath.min. The set sizeis request-controlled, so a body with enough containers exceeds the engine argument-count limit
and throws
RangeError, aborting request normalization before dispatch. Indices arrive inincreasing order, so a scalar captured during the same map pass replaces the reduction. Added
during review: the original regression could not separate "first stripped container" from
"index 0", because every container in its fixture was stripped.
2 — Grok reset-coupon protobuf.
decodeVarintaccumulated with a 32-bit bitwise shift, soa six-byte varint could set the sign bit and return a negative length; the length-delimited
branches then moved the cursor backwards, which is a non-terminating loop on a hostile or
corrupt gRPC-web body rather than merely a wrong value. Decoding now validates the offset,
accumulates by multiplication, rejects values outside the safe-integer range, and bounds every
length-delimited field inside its enclosing message. Added during review: an explicit ten-byte
varint limit, because a continuation byte with no payload bits contributes a part of zero — a
safe integer — so an arbitrarily long run of
0x80decoded as a valid zero, and an overlongzero length normalized a malformed body into an empty coupon list. A malformed response now
throws where it previously returned partially decoded coupons; both callers in
src/server/management/grok-coupon-routes.tsalready answer 502, and a new case asserts thethrow at that boundary rather than only at the decoder.
3 — Devin reasoning replay.
assistantThinkingconcatenated every thinking block whileindependently picking the last available signature, so one block's text rode
ChatMessagePromptfield 11 paired with a different block's signature at field 12. Every blockwith text is still replayed; field 12 is attached only when the text replayed is the text
that signature attests, which is the single-block case. Changed during review: the submitted
form kept the pair by replaying only the final block, which trades an invalid pairing for
silently discarding reasoning the turn produced. Also changed: the parser parks a
JSON.stringify(reasoningItem)on unsigned thinking parts and it was reaching field 12verbatim; the predicate that denies it now lives in
src/responses/reasoning-envelope.tsbeside the representation it describes, and stays a deny-list because field 12 is opaque — an
allow-list modelled on Anthropic's base64 spelling would drop a JWT-shaped or JSON-shaped token
the service really issued. A counter-case test pins that those survive.
4 — reordered and escaped freeform wrapper keys. The progressive decoder located a wrapper
by comparing the buffer against the literal opening for each key it knew.
unwrapFreeformToolInputdecides the completed input withJSON.parse, which cares aboutneither property order nor how a name is spelled, so
{"metadata":1,"input":"cmd"}and acanonical key written with a
\u0069escape both streamed the raw object as deltas and thencompleted as
cmd. The routed path hid this behind its own hold for unrecognized objects; thedirect Responses bridge published the wrapper syntax that completion then removed. The prefix is
now scanned as JSON instead of matched as text.
One consequence deserves a reviewer's attention because it narrows existing behaviour. A
parseable object that is not a wrapper (
{"code":1}) now reaches the direct bridge in onedelta when the object closes, where it previously streamed as it arrived. No prefix of it can
be published safely, because
inputcan still follow any property. Routed restoration has heldexactly these bodies since #5047, so this is the two paths agreeing rather than a new
restriction on one, and bodies that are not objects — which is what an
execprogram or a patchenvelope looks like — are unaffected.
structure/transports/responses.mdstates the costinstead of repeating the old claim that raw input is always progressive.
Scope notes:
freeformFallbackKeysis removed because holding every undecided object subsumesit and it had no other caller. No file-size-ratchet cap is touched; the new regression is a
sibling file registered in both test-layout inventories.
Verification
No local execution of any kind was performed on this branch. No test suite, no individual
test file, no
typecheck, nobuild, noinstall, and noocxinvocation. Every claim belowcomes from static reasoning against the source, and all runtime evidence must come from
exact-head hosted CI on this pull request.
What was verified statically:
unwrapFreeformToolInputinsrc/responses/apply-patch-envelope.tsread as the oracle forevery classification the new scanner returns, case by case, including non-objects, non-string
input, trailing garbage, unparseable escapes, and literal control characters.scanValue/scanFreeformWrapperargued from the clampand from the fact that every successful transition strictly advances the cursor.
tests/adapters/bridge.test.ts,tests/responses/responses-custom-tool-stream-consistency.test.tsandtests/responses/responses-tool-conformance.test.tswere read for regressions; everyobject-shaped fixture there arrives in a single chunk, so their concatenations are unchanged.
The one comment that asserted the old timing is corrected in place.
git merge-tree --write-tree origin/dev HEADreports no conflict againstdbaad90ab1.no-execution rule. Their findings produced the "added/changed during review" items above: the
ten-byte varint bound, the Devin text-loss and predicate-placement changes, the
first-stripped-container assertion, the documentation correction, the recorded-retraction and
liveness assertions in the new regression, and the scan reporting which limit it hit so a hold
that ran out of buffer skips the parse entirely.
Checklist
Closes #5151.
Summary by CodeRabbit