void PeerWireClient::sendBlock(int piece, int offset, const QByteArray &data)
{
    QByteArray block;

    char message[] = {0, 0, 0, 1, 7};
    toNetworkData(9 + data.size(), &message[0]);
    block += QByteArray(message, sizeof(message));

    char numbers[4 * 2];
    toNetworkData(piece, &numbers[0]);
    toNetworkData(offset, &numbers[4]);
    block += QByteArray(numbers, sizeof(numbers));
    block += data;

    BlockInfo blockInfo;
    blockInfo.pieceIndex = piece;
    blockInfo.offset = offset;
    blockInfo.length = data.size();
    blockInfo.block = block;

    pendingBlocks << blockInfo;
    pendingBlockSizes += block.size();

    if (pendingBlockSizes > 32 * 16384) {
        chokePeer();
        unchokePeer();
        return;
    }
    emit readyToTransfer();
}