payload := []byte(`<?xml version="1.0" encoding="UTF-8"?><Progress><BytesScanned>` +
		strconv.FormatInt(bytesScanned, 10) + `</BytesScanned><BytesProcessed>` +
		strconv.FormatInt(bytesProcessed, 10) + `</BytesProcessed><BytesReturned>` +
		strconv.FormatInt(bytesReturned, 10) + `</BytesReturned></Stats>`)
	return genMessage(progressHeader, payload)
}

// Refer genStatsHeader().