Append one checksummed bounded transfer chunk

PATCH 
/api/v1/uploads/:upload_id

The per-request chunk budget bounds memory and retry cost; it is not a whole-document limit. A successful response advances Upload-Offset only after the chunk is durable.

Request

Responses

204

Chunk durably appended; Upload-Offset is the next position

400

The multipart shape or Idempotency-Key is malformed

401

The opaque credential is absent, ambiguous, malformed, expired, revoked, or invalid

403

The browser mutation did not originate from this application, or the authenticated member lacks the required permission

409

Duplicate content is disallowed, or an idempotency key was reused for a different request

412

The strong revision precondition is stale

413

A configured streaming body or per-file size limit was exceeded. A transport-level rejection may omit the JSON body.

415

The file is not one of the explicitly supported actual content types

421

The Host authority is not allowed by the loopback deployment profile

460

The supplied chunk checksum did not match

503

A required core dependency is unavailable; retry with bounded backoff