diff options
Diffstat (limited to 'src/wallet.cpp')
| -rw-r--r-- | src/wallet.cpp | 51 |
1 files changed, 41 insertions, 10 deletions
diff --git a/src/wallet.cpp b/src/wallet.cpp index daca7ac04b..318a1388d2 100644 --- a/src/wallet.cpp +++ b/src/wallet.cpp @@ -18,8 +18,12 @@ using namespace std; // Settings CFeeRate payTxFee(DEFAULT_TRANSACTION_FEE); +unsigned int nTxConfirmTarget = 1; bool bSpendZeroConfChange = true; +/** Fees smaller than this (in satoshi) are considered zero fee (for transaction creation) */ +CFeeRate CWallet::minTxFee = CFeeRate(10000); // Override with -mintxfee + ////////////////////////////////////////////////////////////////////////////// // // mapWallet @@ -1273,6 +1277,7 @@ bool CWallet::CreateTransaction(const vector<pair<CScript, int64_t> >& vecSend, return false; } + wtxNew.fTimeReceivedIsTxTime = true; wtxNew.BindWallet(this); CMutableTransaction txNew; @@ -1292,7 +1297,7 @@ bool CWallet::CreateTransaction(const vector<pair<CScript, int64_t> >& vecSend, BOOST_FOREACH (const PAIRTYPE(CScript, int64_t)& s, vecSend) { CTxOut txout(s.second, s.first); - if (txout.IsDust(CTransaction::minRelayTxFee)) + if (txout.IsDust(::minRelayTxFee)) { strFailReason = _("Transaction amount too small"); return false; @@ -1353,7 +1358,7 @@ bool CWallet::CreateTransaction(const vector<pair<CScript, int64_t> >& vecSend, // Never create dust outputs; if we would, just // add the dust to the fee. - if (newTxOut.IsDust(CTransaction::minRelayTxFee)) + if (newTxOut.IsDust(::minRelayTxFee)) { nFeeRet += nChange; reservekey.ReturnKey(); @@ -1393,19 +1398,31 @@ bool CWallet::CreateTransaction(const vector<pair<CScript, int64_t> >& vecSend, } dPriority = wtxNew.ComputePriority(dPriority, nBytes); - // Check that enough fee is included - int64_t nPayFee = payTxFee.GetFee(nBytes); - bool fAllowFree = AllowFree(dPriority); - int64_t nMinFee = GetMinFee(wtxNew, nBytes, fAllowFree, GMF_SEND); - if (nFeeRet < max(nPayFee, nMinFee)) + int64_t nFeeNeeded = GetMinimumFee(nBytes, nTxConfirmTarget, mempool); + + if (nFeeRet >= nFeeNeeded) + break; // Done, enough fee included. + + // Too big to send for free? Include more fee and try again: + if (nBytes > MAX_FREE_TRANSACTION_CREATE_SIZE) { - nFeeRet = max(nPayFee, nMinFee); + nFeeRet = nFeeNeeded; continue; } - wtxNew.fTimeReceivedIsTxTime = true; + // Not enough fee: enough priority? + double dPriorityNeeded = mempool.estimatePriority(nTxConfirmTarget); + // Not enough mempool history to estimate: use hard-coded AllowFree. + if (dPriorityNeeded <= 0 && AllowFree(dPriority)) + break; + + // Small enough, and priority high enough, to send for free + if (dPriority >= dPriorityNeeded) + break; - break; + // Include more fee and try again. + nFeeRet = nFeeNeeded; + continue; } } } @@ -1513,6 +1530,20 @@ string CWallet::SendMoneyToDestination(const CTxDestination& address, int64_t nV return SendMoney(scriptPubKey, nValue, wtxNew); } +int64_t CWallet::GetMinimumFee(unsigned int nTxBytes, unsigned int nConfirmTarget, const CTxMemPool& pool) +{ + // payTxFee is user-set "I want to pay this much" + int64_t nFeeNeeded = payTxFee.GetFee(nTxBytes); + // User didn't set: use -txconfirmtarget to estimate... + if (nFeeNeeded == 0) + nFeeNeeded = pool.estimateFee(nConfirmTarget).GetFee(nTxBytes); + // ... unless we don't have enough mempool data, in which case fall + // back to a hard-coded fee + if (nFeeNeeded == 0) + nFeeNeeded = minTxFee.GetFee(nTxBytes); + return nFeeNeeded; +} + |