# Complete - m-performance-hotspot-optimization/11+10_dart_isolate_transport_path

## 완료 일시

2026-06-06

## 요약

Dart TCP/WS transport 수신 경로를 gateway-backed receive coordinator로 연결한 구현을 1회 리뷰했고 최종 판정은 PASS다.

## 루프 이력

| Plan | Review | Verdict | 메모 |
|------|--------|---------|------|
| `plan_cloud_G08_0.log` | `code_review_cloud_G08_0.log` | PASS | TCP/WS IO/web 수신 경로 전환, communicator gateway backlog 보정, focused stress/performance 검증이 계획 범위를 충족했다. |

## 구현/정리 내용

- `ProtobufClient` TCP 수신 path를 inline `PacketBase.fromBuffer` decode 대신 `onReceivedFrame` gateway-backed coordinator로 전환했다.
- `WsProtobufClient` IO/web 수신 path를 동일한 coordinator contract로 전환하고 web conditional export의 sync fallback을 유지했다.
- gateway decode와 dispatch 병목을 분리해 `_gatewayBacklog`로 stalled handler 상황의 transport backpressure를 보존했다.

## 최종 검증

- `dart analyze lib/src/protobuf_client.dart lib/src/ws_protobuf_client_io.dart lib/src/ws_protobuf_client_web.dart lib/src/communicator.dart` - PASS; No issues found.
- `dart test test/socket_test.dart test/communicator_test.dart -r expanded` - PASS; 67 tests passed.
- `dart compile js test/browser_ws_import_compile.dart -o /tmp/proto_socket_browser_ws_import_compile.js` - PASS; JavaScript output generated.
- `bash agent-ops/skills/project/run-proto-socket-test-matrix/scripts/run_stress.sh --quick --lang dart --transport tcp,ws --profile roundtrip,payload` - PASS; 12 rows, required skips 0, stability violations 0; result=`agent-test/runs/20260606-045133-proto-socket-stress-quick.md`.
- `bash agent-ops/skills/project/run-proto-socket-test-matrix/scripts/run_performance.sh --quick` - PASS; same-language/cross-language/typescript-gateway all PASS, regression SKIPPED; result=`agent-test/runs/20260606-045148-proto-socket-performance-quick.md`.

## Roadmap Completion

- Milestone: `agent-roadmap/milestones/performance-hotspot-optimization.md`
- Completed task ids:
  - `dart-isolate-real-path`: PASS; evidence=`agent-task/archive/2026/06/m-performance-hotspot-optimization/11+10_dart_isolate_transport_path/plan_cloud_G08_0.log`, `agent-task/archive/2026/06/m-performance-hotspot-optimization/11+10_dart_isolate_transport_path/code_review_cloud_G08_0.log`; verification=`dart test test/socket_test.dart test/communicator_test.dart -r expanded`, `dart compile js test/browser_ws_import_compile.dart -o /tmp/proto_socket_browser_ws_import_compile.js`, `bash agent-ops/skills/project/run-proto-socket-test-matrix/scripts/run_stress.sh --quick --lang dart --transport tcp,ws --profile roundtrip,payload`, `bash agent-ops/skills/project/run-proto-socket-test-matrix/scripts/run_performance.sh --quick`
- Not completed task ids: 없음

## 잔여 Nit

- 없음

## 후속 작업

- 없음
