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[Refactor] RTC Transport 인증·재연결 및 종료 전달 정책 정리 - #84
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📝 WalkthroughWalkthroughThe PR centralizes authenticated token handling, adds dynamic Socket.IO token resolution, clarifies RTC termination semantics, resets reconnect backoff after successful streams, and adds a viewer result-preparation state. ChangesRTC authentication and lifecycle
Estimated code review effort: 3 (Moderate) | ~30 minutes Merge Risk: 🔵 Low · up to Host termination now treats post-end result delivery and cleanup failures as non-fatal, but those failure paths lack executable regression coverage. A regression could incorrectly report termination failure or skip completion for affected hosts. Sequence Diagram(s)sequenceDiagram
participant Viewer
participant SSE
participant SessionController
participant Workspace
participant ResultQuery
Viewer->>SSE: subscribe to room events
SSE-->>SessionController: room ended event
SessionController->>Workspace: set isResultPending
Workspace-->>Viewer: show PREPARING_RESULT
SessionController->>ResultQuery: recover missing result
ResultQuery-->>Workspace: display result
🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 16.67% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 12 functions across 19 files. (5 skipped: 5 unsupported.) ✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Inline comments:
In `@src/features/rtc/host-controls/__tests__/rtc-host-controls.test.cjs`:
- Around line 212-220: Replace the source-text assertions in the termination
test with behavioral tests for the termination controller: use fake callbacks to
exercise result delivery, publisher cleanup, and room disconnect failures, then
assert the successful termination result, stage-specific onNonFatalError
diagnostics, cleanup order, and completion behavior for each case. Anchor the
changes to the existing use-rtc-host-termination-controller flow and preserve
the expectation that non-fatal errors do not invalidate termination.
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📒 Files selected for processing (24)
docs/architecture/adr-0008-rtc-reaction-socket-channel.mddocs/architecture/adr-0022-rtc-camera-session-and-livekit-lifecycle.mddocs/architecture/adr-0026-rtc-viewer-waiting-entry.mddocs/architecture/adr-0044-rtc-role-session-termination-lifecycle.mdpackage.jsonsrc/entities/rtc-room/api/rtc-room-query.tssrc/features/rtc/host-controls/__tests__/rtc-host-controls.test.cjssrc/features/rtc/host-controls/model/use-rtc-host-termination-controller.tssrc/features/rtc/host-controls/model/use-rtc-room-events.tssrc/features/rtc/host-controls/ui/rtc-host-livekit.tsxsrc/features/rtc/join-room/__tests__/rtc-join-room.test.cjssrc/features/rtc/join-room/model/use-rtc-viewer-entry.tssrc/features/rtc/join-room/model/use-rtc-viewer-session-controller.tssrc/features/rtc/join-room/ui/rtc-viewer-waiting.tsxsrc/features/rtc/reactions/__tests__/rtc-reaction-domain.test.cjssrc/features/rtc/reactions/api/socket-io-reaction-transport.tssrc/features/rtc/reactions/model/use-rtc-reaction-channel.tssrc/pages/camera/ui/rtc-viewer-page.tsxsrc/shared/api/__tests__/authenticated-fetch.test.cjssrc/shared/api/authenticated-fetch.tssrc/shared/api/index.tssrc/shared/api/upload-fetch-client.tssrc/shared/lib/jwt/decode-access-token.tssrc/widgets/rtc/session-workspace/ui/rtc-viewer-workspace.tsx
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🎯 작업 내용
Issue #44의 LiveKit / SSE / Socket.IO 실시간 통신 책임과 실패 경계를 재검증하고, 인증 만료 복구와 RTC 종료 시 Transport 간 경쟁 조건을 보완했습니다.
각 Transport는 역할과 lifecycle이 서로 달라 독립된 실패 경계를 유지하되, SSE 인증 복구와 Host 종료 성공 기준처럼 교차 책임이 필요한 구간만 명시적으로 정리했습니다.
✅ 주요 변경 사항
SSE 인증 및 재연결 정책 보완
refreshAuthSession()을 통해 access token 갱신 후 재요청인증 Fetch 책임 공통화
executeAuthenticatedFetch추가RTC 종료 결과 전달 정책 정리
endRoom()성공으로 변경ended가 Viewer에 먼저 도착해 LiveKit RPC handler가 제거되는 race가 발생해도 Host 종료 전체가 실패하지 않도록 보완ended를 수신하면 결과 fallback 경로를 통해 종료 결과 화면으로 전환Transport 실패 경계 및 Reaction 재연결 정리
테스트 및 문서화
🧪 확인 사항
📌 참고 사항
세 Transport를 하나의 공통 lifecycle로 통합하지 않고 독립된 실패 경계를 유지했습니다.
Host와 Viewer의 LiveKit 재연결 전략도 역할 차이에 따라 유지했습니다. Host는 Camera Publisher / Track lifecycle까지 함께 조율해야 하므로 앱 레벨 orchestration을 두고, Viewer는 연결 복구를 LiveKit SDK에 주로 위임합니다.
🟢 관련 이슈
Closes #44
Summary by CodeRabbit
New Features
Bug Fixes