Resumable Uploads

upup supports two resumable protocols.

Multipart

Multipart uploads use your configured uploadEndpoint or serverUrl. Core selects multipart for files above thresholdBytes.

tsx

<UpupUploader
    provider="aws"
    uploadEndpoint="/api/upload-token"
    resumable={{
        protocol: 'multipart',
        thresholdBytes: 5 * 1024 * 1024,
        chunkSizeBytes: 8 * 1024 * 1024,
    }}
/>

Your server must support:

txt

POST /multipart/init
POST /multipart/sign-part
POST /multipart/complete
POST /multipart/abort

tus

tus uploads use an external tus-compatible service directly.

tsx

<UpupUploader
    resumable={{
        protocol: 'tus',
        endpoint: 'https://uploads.example.com/files',
        retryDelays: [0, 1000, 3000, 5000],
    }}
/>

Configure only one upload target at a time: uploadEndpoint, serverUrl, or tus endpoint.