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-rw-r--r--src/wallet/wallet.cpp15
-rw-r--r--src/wallet/wallet.h3
2 files changed, 15 insertions, 3 deletions
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index a8ef6d9511..4c10ea0edb 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -40,6 +40,7 @@ CFeeRate payTxFee(DEFAULT_TRANSACTION_FEE);
unsigned int nTxConfirmTarget = DEFAULT_TX_CONFIRM_TARGET;
bool bSpendZeroConfChange = DEFAULT_SPEND_ZEROCONF_CHANGE;
bool fSendFreeTransactions = DEFAULT_SEND_FREE_TRANSACTIONS;
+bool fWalletRbf = DEFAULT_WALLET_RBF;
const char * DEFAULT_WALLET_DAT = "wallet.dat";
const uint32_t BIP32_HARDENED_KEY_LIMIT = 0x80000000;
@@ -2362,11 +2363,17 @@ bool CWallet::CreateTransaction(const vector<CRecipient>& vecSend, CWalletTx& wt
// Fill vin
//
- // Note how the sequence number is set to max()-1 so that the
- // nLockTime set above actually works.
+ // Note how the sequence number is set to non-maxint so that
+ // the nLockTime set above actually works.
+ //
+ // BIP125 defines opt-in RBF as any nSequence < maxint-1, so
+ // we use the highest possible value in that range (maxint-2)
+ // to avoid conflicting with other possible uses of nSequence,
+ // and in the spirit of "smallest posible change from prior
+ // behavior."
BOOST_FOREACH(const PAIRTYPE(const CWalletTx*,unsigned int)& coin, setCoins)
txNew.vin.push_back(CTxIn(coin.first->GetHash(),coin.second,CScript(),
- std::numeric_limits<unsigned int>::max()-1));
+ std::numeric_limits<unsigned int>::max() - (fWalletRbf ? 2 : 1)));
// Sign
int nIn = 0;
@@ -3246,6 +3253,7 @@ std::string CWallet::GetWalletHelpString(bool showDebug)
strUsage += HelpMessageOpt("-spendzeroconfchange", strprintf(_("Spend unconfirmed change when sending transactions (default: %u)"), DEFAULT_SPEND_ZEROCONF_CHANGE));
strUsage += HelpMessageOpt("-txconfirmtarget=<n>", strprintf(_("If paytxfee is not set, include enough fee so transactions begin confirmation on average within n blocks (default: %u)"), DEFAULT_TX_CONFIRM_TARGET));
strUsage += HelpMessageOpt("-usehd", _("Use hierarchical deterministic key generation (HD) after BIP32. Only has effect during wallet creation/first start") + " " + strprintf(_("(default: %u)"), DEFAULT_USE_HD_WALLET));
+ strUsage += HelpMessageOpt("-walletrbf", strprintf(_("Send transactions with full-RBF opt-in enabled (default: %u)"), DEFAULT_WALLET_RBF));
strUsage += HelpMessageOpt("-upgradewallet", _("Upgrade wallet to latest format on startup"));
strUsage += HelpMessageOpt("-wallet=<file>", _("Specify wallet file (within data directory)") + " " + strprintf(_("(default: %s)"), DEFAULT_WALLET_DAT));
strUsage += HelpMessageOpt("-walletbroadcast", _("Make the wallet broadcast transactions") + " " + strprintf(_("(default: %u)"), DEFAULT_WALLETBROADCAST));
@@ -3486,6 +3494,7 @@ bool CWallet::ParameterInteraction()
nTxConfirmTarget = GetArg("-txconfirmtarget", DEFAULT_TX_CONFIRM_TARGET);
bSpendZeroConfChange = GetBoolArg("-spendzeroconfchange", DEFAULT_SPEND_ZEROCONF_CHANGE);
fSendFreeTransactions = GetBoolArg("-sendfreetransactions", DEFAULT_SEND_FREE_TRANSACTIONS);
+ fWalletRbf = GetBoolArg("-walletrbf", DEFAULT_WALLET_RBF);
return true;
}
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index 7a771350cb..61aff6e45a 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -37,6 +37,7 @@ extern CFeeRate payTxFee;
extern unsigned int nTxConfirmTarget;
extern bool bSpendZeroConfChange;
extern bool fSendFreeTransactions;
+extern bool fWalletRbf;
static const unsigned int DEFAULT_KEYPOOL_SIZE = 100;
//! -paytxfee default
@@ -53,6 +54,8 @@ static const bool DEFAULT_SPEND_ZEROCONF_CHANGE = true;
static const bool DEFAULT_SEND_FREE_TRANSACTIONS = false;
//! -txconfirmtarget default
static const unsigned int DEFAULT_TX_CONFIRM_TARGET = 2;
+//! -walletrbf default
+static const bool DEFAULT_WALLET_RBF = false;
//! Largest (in bytes) free transaction we're willing to create
static const unsigned int MAX_FREE_TRANSACTION_CREATE_SIZE = 1000;
static const bool DEFAULT_WALLETBROADCAST = true;