Chunked Uploads

OxiCloud supports TUS-like chunked uploads for large files. Uploads are parallel, resumable, and have MD5 integrity checks.

How It Works

1. Client sends POST /api/files/upload/init with file metadata → receives an upload_id
2. Client splits the file into chunks and uploads them in parallel via POST /api/files/upload/chunk
3. Each chunk includes its index, MD5 hash, and the upload_id
4. When all chunks are uploaded, client calls POST /api/files/upload/complete
5. Server reassembles the file, verifies integrity, and runs deduplication

API Endpoints

Initialize Upload

POST /api/files/upload/init
Content-Type: application/json

{
  "file_name": "large-video.mp4",
  "folder_id": "folder-uuid",
  "total_size": 524288000,
  "chunk_size": 8388608,
  "total_chunks": 63
}

Upload Chunk

POST /api/files/upload/chunk
Content-Type: multipart/form-data

upload_id: "uuid"
chunk_index: 0
chunk_hash: "md5-hex"
file: <binary>

Complete Upload

POST /api/files/upload/complete
Content-Type: application/json

{
  "upload_id": "uuid"
}

Configuration

Parameter	Default	Description
Max parallel chunks	8	Concurrent chunk uploads
Min size for chunking	200 MB	Below this, single-shot upload is used
Chunk size	8 MB	Default chunk size

Frontend Behaviour

The OxiCloud web UI automatically selects chunked upload for large files. A progress bar shows overall completion and current chunk status.