package org.klomp.snark;
import net.i2p.data.ByteArray;
/**
* Callback used to fetch data
* @since 0.8.2
*/
interface DataLoader
{
/**
* This is the callback that PeerConnectionOut calls to get the data from disk
* @return bytes or null for errors
*/
public ByteArray loadData(int piece, int begin, int length);
}