diff options
| -rw-r--r-- | src/miner.cpp | 16 | ||||
| -rw-r--r-- | src/wallet.cpp | 10 |
2 files changed, 23 insertions, 3 deletions
diff --git a/src/miner.cpp b/src/miner.cpp index 3ecf1609e1..8184705ab9 100644 --- a/src/miner.cpp +++ b/src/miner.cpp @@ -242,9 +242,21 @@ CBlockTemplate* CreateNewBlock(const CScript& scriptPubKeyIn) } if (fMissingInputs) continue; - // Priority is sum(valuein * age) / txsize + // Priority is sum(valuein * age) / modified_txsize unsigned int nTxSize = ::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION); - dPriority /= nTxSize; + unsigned int nTxSizeMod = nTxSize; + // In order to avoid disincentivizing cleaning up the UTXO set we don't count + // the constant overhead for each txin and up to 110 bytes of scriptSig (which + // is enough to cover a compressed pubkey p2sh redemption) for priority. + // Providing any more cleanup incentive than making additional inputs free would + // risk encouraging people to create junk outputs to redeem later. + BOOST_FOREACH(const CTxIn& txin, tx.vin) + { + unsigned int offset = 41U + min(110U, (unsigned int)txin.scriptSig.size()); + if (nTxSizeMod > offset) + nTxSizeMod -= offset; + } + dPriority /= nTxSizeMod; // This is a more accurate fee-per-kilobyte than is used by the client code, because the // client code rounds up the size to the nearest 1K. That's good, because it gives an diff --git a/src/wallet.cpp b/src/wallet.cpp index ddfd71efda..012dbef80a 100644 --- a/src/wallet.cpp +++ b/src/wallet.cpp @@ -1300,7 +1300,15 @@ bool CWallet::CreateTransaction(const vector<pair<CScript, int64> >& vecSend, strFailReason = _("Transaction too large"); return false; } - dPriority /= nBytes; + unsigned int nTxSizeMod = nBytes; + // See miner.c's dPriority logic for the matching network-node side code. + BOOST_FOREACH(const CTxIn& txin, (*(CTransaction*)&wtxNew).vin) + { + unsigned int offset = 41U + min(110U, (unsigned int)txin.scriptSig.size()); + if (nTxSizeMod > offset) + nTxSizeMod -= offset; + } + dPriority /= nTxSizeMod; // Check that enough fee is included int64 nPayFee = nTransactionFee * (1 + (int64)nBytes / 1000); |