boolean visitPieceMessage(PieceMessage message) {

        peer.downloadedBlocksCount++; //
        peer.data[message.blockIndex] = message.data;

        Peer[] checkin = new Peer[peer.peers2BlocksMap.size()];
        peer.peers2BlocksMap.keySet().toArray(new PeerInterface[peer.peers2BlocksMap.keySet().size()]);

        for (Peer uzel: checkin){
            uzel.have(peer, message.blockIndex);
        }

        for (byte[] check: peer.data){
            if (check == null){
            return false;
            }
        }
    return true;
    }