fix(transport): pin manual redirects at upstream dispatch - #4082
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Included review availability: Your plan provides up to 10 included reviews per hour; 8 remain after this review. 📝 WalkthroughWalkthroughThe change enforces manual redirect handling for credential-bearing upstream requests across shared transports and provider executors. Tests cover redirect statuses and targets. Reference documentation now describes the server redirect policy in multiple languages. ChangesUpstream redirect policy
Priority: ➖ Normal Estimated code review effort: 3 (Moderate) | ~25 minutes Merge Risk: ⚪ Minimal · up to Credential-bearing upstream requests now preserve redirect responses instead of automatically following them, including OAuth override dispatch. Covered paths prevent redirect-target requests while retaining expected response handling, so no current merge-blocking risk remains. Suggested reviewers: 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 60.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 20 functions across 20 files. (1 skipped: 1 unsupported.)
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🧩 Analysis chain🏁 Script executed: #!/bin/bash
set -euo pipefail
echo '== Revision and PR metadata =='
git rev-parse HEAD
git status --short
gh pr view 4082 --repo lidge-jun/opencodex --json baseRefOid,baseRefName,headRefOid,headRefName,files --jq '{baseRefOid,baseRefName,headRefOid,headRefName,files:[.files[].path]}'
base="$(gh pr view 4082 --repo lidge-jun/opencodex --json baseRefOid --jq .baseRefOid)"
echo "== Changed files against ${base} =="
git diff --name-status "$base"...HEAD
echo '== Diff (zero context) =='
git diff --unified=0 "$base"...HEAD
echo '== Fetch / dispatch / redirect sites in changed source files =='
git diff --name-only "$base"...HEAD \
| while IFS= read -r file; do
case "$file" in
*.ts|*.tsx|*.js|*.mjs|*.cjs)
echo "--- $file"
rg -n -C 5 -e '\bfetch\s*\(' -e '\bdispatch\s*\(' -e 'redirect\s*:' -e 'Location' -e 'Response' "$file" || true
;;
esac
done
echo '== AST outlines for changed runtime TypeScript source =='
git diff --name-only "$base"...HEAD \
| while IFS= read -r file; do
case "$file" in
*.ts)
echo "--- $file"
ast-grep outline "$file" --items all --type function,method,class --view compact || true
;;
esac
doneLength of output: 115573 🏁 Script executed: #!/bin/bash
set -euo pipefail
base="$(gh pr view 4082 --repo lidge-jun/opencodex --json baseRefOid --jq .baseRefOid)"
runtime_files=(
src/adapters/mimo-free.ts
src/images/loop.ts
src/images/xai-video-client.ts
src/lib/upstream-retry.ts
src/server/claude-messages.ts
src/server/images.ts
src/server/responses/fetch-helpers.ts
src/vision/anthropic-describe.ts
src/web-search/anthropic-executor.ts
src/web-search/loop.ts
)
echo '== Source diff with function context =='
git diff --unified=12 "$base"...HEAD -- "${runtime_files[@]}"
echo '== All source fetch calls with numbered enclosing context =='
for file in "${runtime_files[@]}"; do
echo "--- $file"
rg -n -C 14 --glob '*.ts' '\b(?:globalThis\.)?fetch\s*\(' "$file" || true
done
echo '== All source redirect and RequestInit reconstruction sites =='
for file in "${runtime_files[@]}"; do
echo "--- $file"
rg -n -C 10 -e 'redirect\s*:' -e 'RequestInit' -e '\.\.\.[[:alnum:]_?.]+' -e '\bexecutor\s*\(' "$file" || true
done
echo '== Responses 3xx and Location relay paths =='
rg -n -C 12 -g '*.ts' -e '\b[Ll]ocation\b' -e '\bstatus\s*===?\s*3\d\d\b' -e '\bstatus\s*>=\s*300\b' src/server/responsesLength of output: 90772 🏁 Script executed: #!/bin/bash
set -euo pipefail
base="$(gh pr view 4082 --repo lidge-jun/opencodex --json baseRefOid --jq .baseRefOid)"
echo '== Changed test and documentation hunks =='
git diff --unified=10 "$base"...HEAD -- tests docs README.md 2>/dev/null || true
echo '== Provider dispatch override construction and consumers =='
rg -n -C 12 --glob '*.ts' \
-e 'dispatchOverride\s*:' \
-e 'dispatchOverride\b' \
-e '\bproviderFetch\s*\(' \
src tests
echo '== Header-timeout callers and final manualRedirect argument uses =='
rg -n -C 8 --glob '*.ts' \
-e '\bfetchWithHeaderTimeout\s*\(' \
-e 'manualRedirect' \
src tests
echo '== Native response header sanitizer and 3xx tests =='
rg -n -C 16 --glob '*.ts' \
-e 'function sanitizePassthroughHeaders' \
-e 'const sanitizePassthroughHeaders' \
-e 'sanitizePassthroughHeaders\s*=' \
-e '(?:3[0-9]{2}|Location|location).*(?:relay|passthrough|redirect)' \
src/server/responses testsLength of output: 199859 🏁 Script executed: #!/bin/bash
set -euo pipefail
echo '== Complete OAuth dispatch override =='
sed -n '4015,4095p' src/server/responses/core.ts
echo '== All provider fetch override selection sites in Responses core =='
rg -n -C 8 --glob '*.ts' \
-e '\.fetch\s*\?\?\s*execute' \
-e '\.fetch\s*\?\?\s*globalThis\.fetch' \
-e '\bfetchImpl\s*\(' \
src/server/responses/core.ts src/server/responses/fetch-helpers.ts
echo '== Tests of OAuth dispatch with a provider fetch override =='
rg -n -C 10 --glob '*.ts' \
-e 'oauthDispatch' \
-e 'selectionIsCurrent' \
-e 'dispatchOverride.*fetch' \
tests/responses tests/server tests/codex-integrationLength of output: 10362
Blocking: OAuth dispatch can bypass the final manual-redirect executorIn const response = await fetchImpl(destination, dispatchInit);
As a result, an OAuth provider with a per-provider Set the policy at this direct send boundary. For example: const response = await fetchImpl(destination, {
...dispatchInit,
redirect: "manual",
});Do not replace Add a regression case that enters the production The existing ✅ Action performedReview finished.
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리뷰 · 우선순위 73 / 80설명 이 PR은 자격 증명·본문을 실어 보내는 업스트림 HTTP 전송에 왜 필요한가. Bun(과 일반 fetch)은 3xx를 기본으로 따라간다. 교차 origin에서는 구체적으로 (1) 라인 - 이게 무슨 문제다 호환성 계약 - 동일 origin 리다이렉트도 더 이상 자동 follow 하지 않는다. 별칭 URL이 최종 API로 302/307 하던 설치는 최종 URL로 설정을 고쳐야 한다. 본문에 명시돼 있지만, 릴리스 노트/업그레이드 안내에 한 줄이 없으면 현장 장애로 보인다. 머지 전에 CHANGELOG 또는 providers 안내에 “리다이렉트 별칭 금지”를 넣을지 정해야 한다.
물리 전송 누락 점검 - Google/Kiro는 Draft 상태 - hygiene는 녹색이다. Ready로 올리기 전 체크박스·CI full green만 확인하면 된다. unsponsored_surface는 이번 파일 집합에서 게이트가 안 걸린 것으로 보인다(인증 파일 직접 수정 없음). 메인테이너의 판단이 필요한 지점
너의 추천 방향은 맞고 우선순위 높다. Draft 해제 + CI green 후 이 댓글은 grok-bot이 작성했습니다 |
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Inline comments:
In `@structure/04_transports-and-sidecars.md`:
- Around line 96-97: Update oauthDispatch so the final fetchImpl call always
receives redirect set to manual, including when route.provider.fetch is a custom
override, and add a regression test covering credential-bearing redirects.
Preserve the documented guarantee in structure/04_transports-and-sidecars.md
lines 96-97, docs-site/src/content/docs/reference/proxy-formats.md line 25,
docs-site/src/content/docs/fr/reference/proxy-formats.md line 25,
docs-site/src/content/docs/zh-cn/reference/proxy-formats.md line 24, and
docs-site/src/content/docs/zh-tw/reference/proxy-formats.md line 19; update
those statements only as needed to match the enforced behavior.
In `@tests/videos/xai-video-client.test.ts`:
- Around line 32-33: Type the conditional promise in the test before calling
catch so its awaited result is represented as the expected error shape when
asserting error.status. Update the result declaration around submitVideoJob and
pollVideoJob, preserving the existing submit/poll behavior and catch handling.
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📒 Files selected for processing (27)
docs-site/src/content/docs/fr/reference/proxy-formats.mddocs-site/src/content/docs/ja/reference/proxy-formats.mddocs-site/src/content/docs/ko/reference/proxy-formats.mddocs-site/src/content/docs/reference/proxy-formats.mddocs-site/src/content/docs/ru/reference/proxy-formats.mddocs-site/src/content/docs/tr/reference/proxy-formats.mddocs-site/src/content/docs/zh-cn/reference/proxy-formats.mddocs-site/src/content/docs/zh-tw/reference/proxy-formats.mdsrc/adapters/mimo-free.tssrc/images/loop.tssrc/images/xai-video-client.tssrc/lib/upstream-retry.tssrc/server/claude-messages.tssrc/server/images.tssrc/server/responses/fetch-helpers.tssrc/vision/anthropic-describe.tssrc/web-search/anthropic-executor.tssrc/web-search/loop.tsstructure/04_transports-and-sidecars.mdtests/images/loop.test.tstests/lib/credential-redirect-guard.test.tstests/providers/mimo-free-provider.test.tstests/server/server-images.test.tstests/videos/xai-video-client.test.tstests/vision/vision-anthropic.test.tstests/web-search/web-search-anthropic.test.tstests/web-search/web-search.test.ts
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🧩 Analysis chain🏁 Script executed: #!/bin/bash
set -euo pipefail
expected='4e5d3ceea248eb5c758990ccb22e61274dbbb8a9'
actual="$(git rev-parse HEAD)"
echo "HEAD=$actual"
if [ "$actual" != "$expected" ]; then
echo "ERROR: expected $expected" >&2
exit 1
fi
base="$(gh pr view 4082 --repo lidge-jun/opencodex --json baseRefOid --jq .baseRefOid)"
echo "BASE=$base"
echo '== Changed files =='
git diff --name-status "$base...HEAD"
echo '== OAuth direct-send fix and context =='
rg -n -C 22 --glob '*.ts' \
-e '\boauthDispatch\b' \
-e '\bfetchImpl\s*\(' \
-e 'dispatchInit' \
src/server/responses/core.ts
echo '== fetch helper dispatch policy =='
ast-grep outline src/server/responses/fetch-helpers.ts --items all --type function --view compact
rg -n -C 16 --glob '*.ts' \
-e '\bproviderFetch\b' \
-e '\bhttpFetch\b' \
-e '\bfetchWithHeaderTimeout\b' \
-e 'redirect\s*:' \
src/server/responses/fetch-helpers.ts
echo '== OAuth production-path regression candidates =='
rg -n -C 18 --glob '*.ts' \
-e '\boauthDispatch\b' \
-e 'provider-rebuilt' \
-e 'redirect:\s*["'\'']follow["'\'']' \
-e 'redirect:\s*["'\'']manual["'\'']' \
tests
echo '== Changed runtime source diff =='
git diff --unified=18 "$base...HEAD" -- \
src/adapters/mimo-free.ts \
src/images/loop.ts \
src/images/xai-video-client.ts \
src/lib/upstream-retry.ts \
src/server/claude-messages.ts \
src/server/images.ts \
src/server/responses/core.ts \
src/server/responses/fetch-helpers.ts \
src/vision/anthropic-describe.ts \
src/web-search/anthropic-executor.ts \
src/web-search/loop.ts
echo '== Direct fetch sends in changed runtime TypeScript files =='
git diff --name-only "$base...HEAD" -- 'src/**/*.ts' |
while IFS= read -r file; do
echo "--- $file"
rg -n -C 8 --glob '*.ts' '\b(?:globalThis\.)?fetch\s*\(' "$file" || true
doneLength of output: 38749 🏁 Script executed: #!/bin/bash
set -euo pipefail
base='8026405d9a527085b3c972dc8630abf8fe3b0441'
echo '== Focused diff: OAuth fix and regression =='
git diff --unified=35 "$base...HEAD" -- \
src/server/responses/core.ts \
tests/adapters/anthropic/anthropic-quota-dispatch.test.ts \
tests/lib/credential-redirect-guard.test.ts
echo '== Regression test symbols and complete local contexts =='
rg -n -C 30 --glob '*.ts' \
-e 'oauth.*redirect' \
-e 'redirect.*oauth' \
-e 'selectionIsCurrent' \
-e 'custom.*fetch' \
-e 'provider-rebuilt' \
tests/adapters/anthropic/anthropic-quota-dispatch.test.ts \
tests/lib/credential-redirect-guard.test.ts
echo '== Core types and direct dispatch control flow =='
sed -n '3985,4088p' src/server/responses/core.ts
sed -n '1,280p' src/server/responses/fetch-helpers.ts
echo '== Runtime diff only =='
git diff --unified=10 "$base...HEAD" -- \
src/adapters/mimo-free.ts \
src/images/loop.ts \
src/images/xai-video-client.ts \
src/lib/upstream-retry.ts \
src/server/claude-messages.ts \
src/server/images.ts \
src/server/responses/fetch-helpers.ts \
src/vision/anthropic-describe.ts \
src/web-search/anthropic-executor.ts \
src/web-search/loop.ts
echo '== Direct fetch call inventory in changed runtime files =='
for file in \
src/adapters/mimo-free.ts \
src/images/loop.ts \
src/images/xai-video-client.ts \
src/lib/upstream-retry.ts \
src/server/claude-messages.ts \
src/server/images.ts \
src/server/responses/core.ts \
src/server/responses/fetch-helpers.ts \
src/vision/anthropic-describe.ts \
src/web-search/anthropic-executor.ts \
src/web-search/loop.ts
do
echo "--- $file"
rg -n -C 10 --glob '*.ts' '\b(?:globalThis\.)?fetch\s*\(' "$file" || true
doneLength of output: 77885 🏁 Script executed: #!/bin/bash
set -euo pipefail
base='8026405d9a527085b3c972dc8630abf8fe3b0441'
echo '== Image and web-search requestFetch construction and sends =='
rg -n -C 18 --glob '*.ts' \
-e '\brequestFetch\b' \
-e '\bfetchForRequest\b' \
-e '\bfetchImpl\b' \
src/images/loop.ts src/web-search/loop.ts
echo '== OAuth regression: complete test and related helpers =='
sed -n '1,260p' tests/adapters/anthropic/anthropic-quota-dispatch.test.ts
rg -n -C 16 --glob '*.ts' \
-e 'function handleResponses\b' \
-e 'export.*handleResponses\b' \
-e '\bfetchResponse\b' \
-e '\bresolveAdapter\b' \
src/server/responses src/server/adapter-resolve.ts src/adapters
echo '== Native Responses and compact 3xx/Location ownership =='
rg -n -C 12 --glob '*.ts' \
-e '\b[Ll]ocation\b' \
-e '\bstatus\s*>=\s*300\b' \
-e '\bstatus\s*===\s*3' \
src/server/responses
echo '== Full changed-file summary and changed lines outside expected areas =='
git diff --stat "$base...HEAD"
git diff --check "$base...HEAD"
git diff --unified=3 "$base...HEAD" -- \
tests/images/loop.test.ts \
tests/providers/mimo-free-provider.test.ts \
tests/server/server-images.test.ts \
tests/videos/xai-video-client.test.ts \
tests/vision/vision-anthropic.test.ts \
tests/web-search/web-search-anthropic.test.ts \
tests/web-search/web-search.test.ts \
structure/04_transports-and-sidecars.md \
docs-site/src/content/docs/reference/proxy-formats.mdLength of output: 110491
I found no new findings. The prior blocking OAuth issue is fixed. In The regression in I also verified the shared executor policy in
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Ingwannu
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Reviewed current head 4e5d3ce against dev@8026405d9. Approving the scoped server-side manual-redirect policy change.
The important control is at the physical HTTP executor, not only the initial RequestInit: providerFetch passes a manual-pinning executor to rebuilt dispatches, and the OAuth dispatch branch pins manual again after selecting a provider fetch override. Header/attempt deadline helpers and the changed direct image/video/search/MiMo sends retain it. applyUpstreamRecoveryInit preserves that option, so the existing reset retry does not silently remove the guard. Google/Kiro reach the changed attempt-deadline helper.
I read the changed runtime paths and regression assertions. The common matrix checks five redirect statuses, both same-origin and cross-origin destinations, zero target sends, and original status/Location preservation. The OAuth rebuild, CCA, MiMo replay, image/video and sidecar assertions cover the relevant alternate sends. Contributor CI 34316070177 has all 26 jobs successful at this exact head; that is separate from the incomplete local test:changed run described in the PR.
This is an intentional compatibility change even for same-origin redirects: operators need final API URLs. The documentation preserves the other boundary accurately: native Responses/compact may still relay 3xx/Location, and client-side following is not controlled by this patch. This review does not claim protection from arbitrary custom executor code or a repository-wide audit.
No local reproduction, real credential use or live provider traffic was performed during my verification. Existing passing exact-head hosted checks were used. Human-controlled integration remains subject to repository requirements; this approval does not merge or deploy the change.
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Maintainer integration into dev at exact head |
3 participants
Summary
Apply the manual redirect policy already documented in #1471 consistently to built-in model, image, video and search sends. A provider redirect must remain a response for its owner instead of causing Bun to resend the request before that owner can inspect it.
Pin
redirect: "manual"at the final provider executor, including dispatch overrides, header deadlines, Google/Kiro retries, MiMo bootstrap and authentication replay, CCA images, Anthropic sidecars, xAI video and direct image/search loops. Eleven runtime files change, mostly one option per physical send. The existing fetch-helper import boundary and public function arity are preserved; its legacy redirect argument is documented as ignored.Observable behavior
Locationrelay contract. Other response owners retain their current error handling. Client-side redirect following is a separate boundary and is not claimed to be eliminated here.The transport contract and all eight proxy-format reference locales document the same behavior.
Verification
Full author CI: current HEAD run, 26/26 jobs passed. The preceding runtime HEAD also passed all 26 jobs; the final commit changes one test assertion and clarifies comments/documentation.
Based on dev
8026405d9a527085b3c972dc8630abf8fe3b0441, current HEAD4e5d3ceea248eb5c758990ccb22e61274dbbb8a9, with Bun 1.4.2.initwithredirect: "follow"before a custom provider fetch. The final OAuth executor now pins manual after that rebuild. Two production-path regressions failed before the fix; the quota/common suites then passed 97 tests and 502 assertions. The final video assertion change passed all four redirect cases and 16 assertions.git diff --checkpassed. Documentation built 425 pages; the new section was read back from all eight generated reference pages.test:changedselected 846 of 1153 files and hit its 900-second limit after recording 6,909 passes, 102 failures and 16 skips. Many failures reported Windows watchdog timeouts, but they are not all classified as baseline. That incomplete local run is not presented as passing; the final current-head cross-platform CI above completed successfully.Checklist
Review readiness checklist
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All CI tests are green on my local testing.
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Summary by CodeRabbit
Bug Fixes
Locationheaders.Documentation