DongHyeonkaandClaude Opus 5
b2963105a8
The keycloak project ended with four open questions that design could not
settle. A two-VM lab was built to answer them by measurement, and this is
that material: 26 experiments, 125 raw command outputs, 22 browser captures.
Follows the import procedure in README.md.
source/ the originating repository verbatim — 78 documents, 28 SVGs,
8 manifests, plus .source-revision recording the commit
final/ the SSOT
document.md 729 lines written from the 29 experiment documents, not
concatenated: what was predicted, what was measured, and
where the measurement itself was wrong
evidence/raw 125 outputs, flattened to <experiment>__<file> because
the originals collided (01-baseline.txt appeared three
times) and the audit only globs the top level
evidence/meta one per raw file; command and exitCode are null and the
README says why rather than inventing them
evidence/browser 22 captures
assets/ three diagrams through techviz
.techviz/ their VizSpecs
A separate project rather than an addition to keycloak: the B-layer answers
that project's four questions, but the A, C and D layers are about cluster
failure, SSO and operations, and one document.md should hold one subject.
The four question records there can point here through 관계.
Recorded rather than papered over: only three of the 28 diagrams were
remade. The repository forbids hand-drawn SVG and forbids titles inside the
canvas; all 28 originals carry both, so converting them is redrawing, not
reformatting. They stay in source/ and the gap is written into the document.
verify-pipeline.py passes. audit-records.py reports no issues.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
49 lines
2.1 KiB
Markdown
49 lines
2.1 KiB
Markdown
---
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kind: CONCEPT
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slug: adapter-inbound-web-c14
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title: forwarded 헤더를 해석하는 쪽은 피어를 검사하지 않는다
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topic: admission-budget-and-backpressure
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project: clean-architecture-backend-template
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status: 게시 전
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sourceRevision: 21234e38cdb9a926cbc92bb97a2aee2e4a7d2916
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rootTreeNode: concept:adapter-inbound-web-c14
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evidenceCapturedOn: 2026-09-01
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assets:
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- key: adapter-inbound-web-c14
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file: ../../../final/evidence/rendered/adapter-inbound-web-c14.svg
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evidence:
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- ../../../final/evidence/raw/adapter-inbound-web-c14.txt
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source:
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- 원본 분석 절은 analysis/14-adapter-inbound-web.md#L1098 이다.
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module: adapter-inbound-web
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---
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# forwarded 헤더를 해석하는 쪽은 피어를 검사하지 않는다
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신뢰 프록시 판정을 담은 `proxy` 패키지 421 LOC이 프로덕션 조립에 들어가지 않는다. 실제로 forwarded 헤더를 해석하는 것은 Spring Boot가 등록하는 필터이고, 그것은 피어가 신뢰된 프록시인지 검사하지 않는다.
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## 본문
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<!-- body:start -->
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신뢰 프록시 판정을 담은 타입들의 참조를 세면 프로덕션 경로가 없다.
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```text
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TrustedProxyPolicy 6 test 1 testkit
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NormalizedForwardedHeaders 4 main 8 test <- main 참조자는 proxy 패키지 내부
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ForwardedHeaderSanitizer 2 test 1 testkit
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```
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`proxy` 패키지 421 LOC이 프로덕션 조립에 들어가지 않는다.
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## 실제로 헤더를 해석하는 쪽
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실제로 forwarded 헤더를 해석하는 것은 Spring Boot의 `server.forward-headers-strategy=framework`(app-bootstrap `application.yml:321` 기본값)가 등록하는 `ForwardedHeaderFilter`/`ForwardedHeaderTransformer`이고, 그것은 **피어가 신뢰된 프록시인지 검사하지 않는다**. §32.2.
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## 분석 원문의 참조 집계
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:::evidence key="adapter-inbound-web-c14" alt="분석 문서 analysis/14-adapter-inbound-web.md 에서 이 기록의 근거 절을 그대로 잘라낸 15줄. 코드베이스를 측정한 것이 아니라 원본 판정이 무엇을 적었는지를 보여 준다." caption="analysis/14-adapter-inbound-web.md 발췌 — 15줄" zoom="true"
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:::
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<!-- body:end -->
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