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Litecoin: IsDust() detection disabled, allows any valid dust to be relayed. The fees imposed on each dust txo is considered sufficient spam deterrant.

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This commit is contained in:
Warren Togami 2013-05-21 22:57:13 -10:00
parent bb88edbd0f
commit 0d1d058451
2 changed files with 5 additions and 10 deletions
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12
src/main.cpp
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@ -362,15 +362,9 @@ unsigned int LimitOrphanTxSize(unsigned int nMaxOrphans)
bool CTxOut::IsDust() const bool CTxOut::IsDust() const
{ {
// "Dust" is defined in terms of CTransaction::nMinRelayTxFee, // Litecoin: IsDust() detection disabled, allows any valid dust to be relayed.
// which has units satoshis-per-kilobyte. // The fees imposed on each dust txo is considered sufficient spam deterrant.
// If you'd pay more than 1/3 in fees return false;
// to spend something, then we consider it dust.
// A typical txout is 33 bytes big, and will
// need a CTxIn of at least 148 bytes to spend,
// so dust is a txout less than 54 uBTC
// (5430 satoshis) with default nMinRelayTxFee
return ((nValue*1000)/(3*((int)GetSerializeSize(SER_DISK,0)+148)) < CTransaction::nMinRelayTxFee);
} }
bool CTransaction::IsStandard() const bool CTransaction::IsStandard() const

3
src/test/transaction_tests.cpp
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@ -263,7 +263,8 @@ BOOST_AUTO_TEST_CASE(test_IsStandard)
BOOST_CHECK(t.IsStandard()); BOOST_CHECK(t.IsStandard());
t.vout[0].nValue = 5011; // dust t.vout[0].nValue = 5011; // dust
BOOST_CHECK(!t.IsStandard()); // Litecoin does not enforce isDust(). Per dust fees are considered sufficient as deterrant.
// BOOST_CHECK(!t.IsStandard());
t.vout[0].nValue = 6011; // not dust t.vout[0].nValue = 6011; // not dust
BOOST_CHECK(t.IsStandard()); BOOST_CHECK(t.IsStandard());