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Implement quality limit for ripple.

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This commit is contained in:
Arthur Britto
2012-09-03 14:15:31 -07:00
parent 61831eaa3c
commit 8910a3e14b
1 changed files with 8 additions and 2 deletions
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10
src/TransactionEngine.cpp
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@@ -3531,6 +3531,7 @@ TER TransactionEngine::doPayment(const SerializedTransaction& txn)
const uint32 uTxFlags = txn.getFlags();
const bool bCreate = isSetBit(uTxFlags, tfCreateAccount);
const bool bPartialPayment = isSetBit(uTxFlags, tfPartialPayment);
const bool bLimitQuality = isSetBit(uTxFlags, tfLimitQuality);
const bool bNoRippleDirect = isSetBit(uTxFlags, tfNoRippleDirect);
const bool bPaths = txn.getITFieldPresent(sfPaths);
const bool bMax = txn.getITFieldPresent(sfSendMax);
@@ -3731,7 +3732,8 @@ TER TransactionEngine::doPayment(const SerializedTransaction& txn)
STAmount saPaid;
STAmount saWanted;
LedgerEntrySet lesBase = mNodes; // Checkpoint with just fees paid.
LedgerEntrySet lesBase = mNodes; // Checkpoint with just fees paid.
uint64 uQualityLimit = STAmount::getRate(saDstAmount, saMaxAmount);
while (temUNCERTAIN == terResult)
{
@@ -3748,8 +3750,12 @@ TER TransactionEngine::doPayment(const SerializedTransaction& txn)
mNodes.swapWith(pspCur->lesEntries); // For the path, save ledger state.
if (!pspBest || (pspCur->uQuality && PathState::lessPriority(pspBest, pspCur)))
if ((!bLimitQuality || pspCur->uQuality <= uQualityLimit) // Quality is not limted or increment has allowed quality.
|| !pspBest // Best is not yet set.
|| (pspCur->uQuality && PathState::lessPriority(pspBest, pspCur))) // Current is better than set.
{
pspBest = pspCur;
}
}
if (pspBest)