Transfer at Once
With the transfer-at-once method, you can upload and download an object body in one go.
If a transfer is stopped for some reason, the transfer needs to start again.
You can receive notifications for the progress state and the transfer completion with a callback. However, you cannot cancel the transfer on your mobile app once the transfer starts. Use this transfer method when you transfer small files on a stable network.
When an upload is finished, the previous data will be replaced with the new data and automatically deleted. If multiple uploads to the same object body occur simultaneously, the last uploaded data will remain; there is no optimistic lock feature for object bodies.
The maximum size of an object body that the transfer-at-once method can handle is 100 MB. For the server stability, we kindly ask you to finish one upload request in about one minute.