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document-haness/docs/keycloak/final/assets/ap4-edge-trust-architecture/ap4-edge-trust-architecture.svg
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<title id="diagram-title">AP4는 공개 edge에서 session을 정제된 upstream identity로 바꾼다</title>
<desc id="diagram-description">왼쪽 외부 브라우저가 AP4_SESSION과 함께 AP4 deployment path의 공개 Nginx entry point를 호출한다. 같은 deployment path에서 Nginx는 host 비공개 oauth2-proxy의 internal /oauth2/auth endpoint에 subrequest를 보내 session을 검증하고 user와 email 결과를 받는다. 이어서 client가 보낸 동명 header를 덮어쓰고 Nginx-owned identity header와 internal token을 host 비공개 Spring upstream의 /edge/me로 전달한다. Upstream은 user header와 internal token을 함께 확인하며 JWT를 직접 입력으로 받지 않는다.</desc>
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