Repair FastAPI Dependency Teardown Streaming Response

Repair FastAPI Dependency Teardown Streaming Response — SYNTHETIC EVIDENCE-LIMITED REVIEW

Case received

A streaming endpoint errors after headers are sent successfully.

Evidence register

• S1: FastAPI dependency lifecycle events and response streaming traces — PARTIAL / UNVERIFIED.
• S2: approved operating baseline / documented policy — NOT PROVIDED; REQUIRED TO VERIFY.
• S3: timestamped revision or change record — NOT PROVIDED; REQUIRED TO VERIFY.
• S4: accountable reviewer and approval evidence — NOT PROVIDED; REQUIRED TO VERIFY.

Investigation checks

1. Establish the identity, timestamp basis and revision lineage of FastAPI dependency lifecycle events and response streaming traces; document missing or contradictory records. — PENDING CORROBORATION.
2. Reconstruct the event sequence surrounding request scoped session closes before final generator iteration, citing exact record identifiers and independent checks. — PENDING CORROBORATION.
3. Compare the evidence with the approved baseline; test the competing explanations for: A streaming endpoint errors after headers are sent successfully. — PENDING CORROBORATION.
4. Draft a non-executing, owner-approved validation sequence and rejection criteria for stream dependency lifetime and disconnect test matrix. — PENDING CORROBORATION.

Deliverables

• time-aligned evidence index for FastAPI dependency lifecycle events and response streaming traces: DRAFT / INCOMPLETE until inputs are validated.
• exceptions and alternative hypotheses for request scoped session closes before final generator iteration: DRAFT / INCOMPLETE until inputs are validated.
• approval-gated stream dependency lifetime and disconnect test matrix and verification criteria: DRAFT / INCOMPLETE until inputs are validated.

Decision gate

INCOMPLETE — HUMAN REVIEW REQUIRED. Sources, scope, time basis and sign-off remain unverified. No live change or approval has occurred.