Method MakeCollateralAmounts

src/darksend.cpp:1679–1720

Split up large inputs or create fee sized inputs

// Split up large inputs or create fee sized inputs
bool CDarkSendPool::MakeCollateralAmounts() {
    // make our change address
    CReserveKey reservekey(pwalletMain);

    CScript scriptChange;
    CPubKey vchPubKey;
    assert(reservekey.GetReservedKey(vchPubKey, false)); // should never fail, as we just unlocked
    scriptChange = GetScriptForDestination(vchPubKey.GetID());

    CWalletTx wtx;
    int64_t nFeeRet = 0;
    std::string strFail = "";
    std::vector<CRecipient> vecSend;

    CRecipient recipient = {scriptChange, (DARKSEND_COLLATERAL * 2) + DARKSEND_FEE, false};
    vecSend.push_back(recipient);

    CCoinControl* coinControl = NULL;
    int nChangePos = -1;
    //int32_t nChangePos;
    // try to use non-denominated and not mn-like funds
    //bool success = pwalletMain->CreateTransaction(vecSend, wtx, reservekey, nFeeRet, nChangePos, strFail, coinControl, ONLY_NONDENOMINATED_NOTMN);
    bool success = pwalletMain->CreateTransaction(vecSend, wtx, reservekey, nFeeRet, nChangePos, strFail, coinControl, ONLY_NONDENOMINATED_NOTMN);
    if (!success) {
        // if we failed (most likeky not enough funds), try to use denominated instead -
        // MN-like funds should not be touched in any case and we can't mix denominated without collaterals anyway
        //success = pwalletMain->CreateTransaction(vecSend, wtx, reservekey, nFeeRet, nChangePos, strFail, coinControl, ONLY_DENOMINATED);
        success = pwalletMain->CreateTransaction(vecSend, wtx, reservekey, nFeeRet, nChangePos, strFail, coinControl, ONLY_DENOMINATED);
        if (!success) {
            LogPrintf("MakeCollateralAmounts: Error - %s\n", strFail.c_str());
            return false;
        }
    }

    // use the same cachedLastSuccess as for DS mixinx to prevent race
    if (pwalletMain->CommitTransaction(wtx, reservekey))
        cachedLastSuccess = chainActive.Height();

    LogPrintf("MakeCollateralAmounts Success: tx %s\n", wtx.GetHash().GetHex().c_str());

    return true;
}

// Create denominations
bool CDarkSendPool::CreateDenominated(int64_t nTotalValue) {