Upload one or more Chunks for a given Device to chunks.memfault.com.

Chunks must be sent in sequential order. The device serial is used to identify the device.

Single chunk upload:

Use Content-Type: application/octet-stream with Content-Length required. Chunks can be Base64-encoded by adding Content-Encoding: base64.

Multiple chunks upload:

Use Content-Type: multipart/mixed; boundary=<boundary> to send multiple chunks in one request.

POST /api/v0/chunks/{device_serial}
Content-Type: multipart/mixed; boundary=boundary_value

--boundary_value
Content-Type: application/octet-stream
Content-Length: <chunk_size>

<chunk_data>
--boundary_value--

---

Return Value

• 202 Accepted — Chunks queued for processing.
• 400 Bad Request — Malformed request.
• 403 Forbidden — Project Key missing or invalid.
• 411 Length Required — Content-Length header missing.
• 413 Payload Too Large — Chunk exceeds maximum size.
• 415 Unsupported Media Type — Unsupported Content-Type.
• 429 Too Many Requests — Rate limited; retry after the Retry-After header interval.
• 503 Service Unavailable — Retry after the Retry-After header interval.