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-rw-r--r--src/wallet/rpcwallet.cpp25
-rw-r--r--src/wallet/wallet.cpp43
-rw-r--r--src/wallet/wallet.h5
3 files changed, 56 insertions, 17 deletions
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index ee8c7548fc..f63ce1bb48 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -9,6 +9,7 @@
#include "consensus/validation.h"
#include "core_io.h"
#include "init.h"
+#include "httpserver.h"
#include "validation.h"
#include "net.h"
#include "policy/feerate.h"
@@ -30,10 +31,21 @@
#include <univalue.h>
+static const std::string WALLET_ENDPOINT_BASE = "/wallet/";
+
CWallet *GetWalletForJSONRPCRequest(const JSONRPCRequest& request)
{
- // TODO: Some way to access secondary wallets
- return vpwallets.empty() ? nullptr : vpwallets[0];
+ if (request.URI.substr(0, WALLET_ENDPOINT_BASE.size()) == WALLET_ENDPOINT_BASE) {
+ // wallet endpoint was used
+ std::string requestedWallet = urlDecode(request.URI.substr(WALLET_ENDPOINT_BASE.size()));
+ for (CWalletRef pwallet : ::vpwallets) {
+ if (pwallet->GetName() == requestedWallet) {
+ return pwallet;
+ }
+ }
+ throw JSONRPCError(RPC_INVALID_PARAMETER, "Requested wallet does not exist or is not loaded");
+ }
+ return ::vpwallets.size() == 1 || (request.fHelp && ::vpwallets.size() > 0) ? ::vpwallets[0] : nullptr;
}
std::string HelpRequiringPassphrase(CWallet * const pwallet)
@@ -2693,7 +2705,6 @@ UniValue fundrawtransaction(const JSONRPCRequest& request)
" \"changePosition\" (numeric, optional, default random) The index of the change output\n"
" \"includeWatching\" (boolean, optional, default false) Also select inputs which are watch only\n"
" \"lockUnspents\" (boolean, optional, default false) Lock selected unspent outputs\n"
- " \"reserveChangeKey\" (boolean, optional, default true) Reserves the change output key from the keypool\n"
" \"feeRate\" (numeric, optional, default not set: makes wallet determine the fee) Set a specific feerate (" + CURRENCY_UNIT + " per KB)\n"
" \"subtractFeeFromOutputs\" (array, optional) A json array of integers.\n"
" The fee will be equally deducted from the amount of each specified output.\n"
@@ -2732,7 +2743,6 @@ UniValue fundrawtransaction(const JSONRPCRequest& request)
CCoinControl coinControl;
int changePosition = -1;
bool lockUnspents = false;
- bool reserveChangeKey = true;
UniValue subtractFeeFromOutputs;
std::set<int> setSubtractFeeFromOutputs;
@@ -2752,7 +2762,7 @@ UniValue fundrawtransaction(const JSONRPCRequest& request)
{"changePosition", UniValueType(UniValue::VNUM)},
{"includeWatching", UniValueType(UniValue::VBOOL)},
{"lockUnspents", UniValueType(UniValue::VBOOL)},
- {"reserveChangeKey", UniValueType(UniValue::VBOOL)},
+ {"reserveChangeKey", UniValueType(UniValue::VBOOL)}, // DEPRECATED (and ignored), should be removed in 0.16 or so.
{"feeRate", UniValueType()}, // will be checked below
{"subtractFeeFromOutputs", UniValueType(UniValue::VARR)},
{"replaceable", UniValueType(UniValue::VBOOL)},
@@ -2779,9 +2789,6 @@ UniValue fundrawtransaction(const JSONRPCRequest& request)
if (options.exists("lockUnspents"))
lockUnspents = options["lockUnspents"].get_bool();
- if (options.exists("reserveChangeKey"))
- reserveChangeKey = options["reserveChangeKey"].get_bool();
-
if (options.exists("feeRate"))
{
coinControl.m_feerate = CFeeRate(AmountFromValue(options["feeRate"]));
@@ -2830,7 +2837,7 @@ UniValue fundrawtransaction(const JSONRPCRequest& request)
CAmount nFeeOut;
std::string strFailReason;
- if (!pwallet->FundTransaction(tx, nFeeOut, changePosition, strFailReason, lockUnspents, setSubtractFeeFromOutputs, coinControl, reserveChangeKey)) {
+ if (!pwallet->FundTransaction(tx, nFeeOut, changePosition, strFailReason, lockUnspents, setSubtractFeeFromOutputs, coinControl)) {
throw JSONRPCError(RPC_WALLET_ERROR, strFailReason);
}
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 458c54774f..223790aa40 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -57,6 +57,8 @@ CFeeRate CWallet::minTxFee = CFeeRate(DEFAULT_TRANSACTION_MINFEE);
*/
CFeeRate CWallet::fallbackFee = CFeeRate(DEFAULT_FALLBACK_FEE);
+CFeeRate CWallet::m_discard_rate = CFeeRate(DEFAULT_DISCARD_FEE);
+
const uint256 CMerkleTx::ABANDON_HASH(uint256S("0000000000000000000000000000000000000000000000000000000000000001"));
/** @defgroup mapWallet
@@ -2471,7 +2473,7 @@ bool CWallet::SignTransaction(CMutableTransaction &tx)
return true;
}
-bool CWallet::FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, int& nChangePosInOut, std::string& strFailReason, bool lockUnspents, const std::set<int>& setSubtractFeeFromOutputs, CCoinControl coinControl, bool keepReserveKey)
+bool CWallet::FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, int& nChangePosInOut, std::string& strFailReason, bool lockUnspents, const std::set<int>& setSubtractFeeFromOutputs, CCoinControl coinControl)
{
std::vector<CRecipient> vecSend;
@@ -2493,8 +2495,13 @@ bool CWallet::FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, int& nC
if (!CreateTransaction(vecSend, wtx, reservekey, nFeeRet, nChangePosInOut, strFailReason, coinControl, false)) {
return false;
}
- if (nChangePosInOut != -1)
+
+ if (nChangePosInOut != -1) {
tx.vout.insert(tx.vout.begin() + nChangePosInOut, wtx.tx->vout[nChangePosInOut]);
+ // we dont have the normal Create/Commit cycle, and dont want to risk reusing change,
+ // so just remove the key from the keypool here.
+ reservekey.KeepKey();
+ }
// Copy output sizes from new transaction; they may have had the fee subtracted from them
for (unsigned int idx = 0; idx < tx.vout.size(); idx++)
@@ -2515,13 +2522,21 @@ bool CWallet::FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, int& nC
}
}
- // optionally keep the change output key
- if (keepReserveKey)
- reservekey.KeepKey();
return true;
}
+static CFeeRate GetDiscardRate(const CBlockPolicyEstimator& estimator)
+{
+ unsigned int highest_target = estimator.HighestTargetTracked(FeeEstimateHorizon::LONG_HALFLIFE);
+ CFeeRate discard_rate = estimator.estimateSmartFee(highest_target, nullptr /* FeeCalculation */, false /* conservative */);
+ // Don't let discard_rate be greater than longest possible fee estimate if we get a valid fee estimate
+ discard_rate = (discard_rate == CFeeRate(0)) ? CWallet::m_discard_rate : std::min(discard_rate, CWallet::m_discard_rate);
+ // Discard rate must be at least dustRelayFee
+ discard_rate = std::max(discard_rate, ::dustRelayFee);
+ return discard_rate;
+}
+
bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletTx& wtxNew, CReserveKey& reservekey, CAmount& nFeeRet,
int& nChangePosInOut, std::string& strFailReason, const CCoinControl& coin_control, bool sign)
{
@@ -2621,6 +2636,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletT
CTxOut change_prototype_txout(0, scriptChange);
size_t change_prototype_size = GetSerializeSize(change_prototype_txout, SER_DISK, 0);
+ CFeeRate discard_rate = GetDiscardRate(::feeEstimator);
nFeeRet = 0;
bool pick_new_inputs = true;
CAmount nValueIn = 0;
@@ -2688,7 +2704,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletT
// Never create dust outputs; if we would, just
// add the dust to the fee.
- if (IsDust(newTxOut, ::dustRelayFee))
+ if (IsDust(newTxOut, discard_rate))
{
nChangePosInOut = -1;
nFeeRet += nChange;
@@ -2768,7 +2784,7 @@ bool CWallet::CreateTransaction(const std::vector<CRecipient>& vecSend, CWalletT
// (because of reduced tx size) and so we should add a
// change output. Only try this once.
CAmount fee_needed_for_change = GetMinimumFee(change_prototype_size, coin_control, ::mempool, ::feeEstimator, nullptr);
- CAmount minimum_value_for_change = GetDustThreshold(change_prototype_txout, ::dustRelayFee);
+ CAmount minimum_value_for_change = GetDustThreshold(change_prototype_txout, discard_rate);
CAmount max_excess_fee = fee_needed_for_change + minimum_value_for_change;
if (nFeeRet > nFeeNeeded + max_excess_fee && nChangePosInOut == -1 && nSubtractFeeFromAmount == 0 && pick_new_inputs) {
pick_new_inputs = false;
@@ -3808,6 +3824,9 @@ std::string CWallet::GetWalletHelpString(bool showDebug)
strUsage += HelpMessageOpt("-keypool=<n>", strprintf(_("Set key pool size to <n> (default: %u)"), DEFAULT_KEYPOOL_SIZE));
strUsage += HelpMessageOpt("-fallbackfee=<amt>", strprintf(_("A fee rate (in %s/kB) that will be used when fee estimation has insufficient data (default: %s)"),
CURRENCY_UNIT, FormatMoney(DEFAULT_FALLBACK_FEE)));
+ strUsage += HelpMessageOpt("-discardfee=<amt>", strprintf(_("The fee rate (in %s/kB) used to discard change (to fee) if it would be dust at this fee rate (default: %s) "
+ "Note: We will always discard up to the dust relay fee and a discard fee above that is limited by the longest target fee estimate"),
+ CURRENCY_UNIT, FormatMoney(DEFAULT_DISCARD_FEE)));
strUsage += HelpMessageOpt("-mintxfee=<amt>", strprintf(_("Fees (in %s/kB) smaller than this are considered zero fee for transaction creation (default: %s)"),
CURRENCY_UNIT, FormatMoney(DEFAULT_TRANSACTION_MINFEE)));
strUsage += HelpMessageOpt("-paytxfee=<amt>", strprintf(_("Fee (in %s/kB) to add to transactions you send (default: %s)"),
@@ -4133,6 +4152,16 @@ bool CWallet::ParameterInteraction()
_("This is the transaction fee you may pay when fee estimates are not available."));
CWallet::fallbackFee = CFeeRate(nFeePerK);
}
+ if (IsArgSet("-discardfee"))
+ {
+ CAmount nFeePerK = 0;
+ if (!ParseMoney(GetArg("-discardfee", ""), nFeePerK))
+ return InitError(strprintf(_("Invalid amount for -discardfee=<amount>: '%s'"), GetArg("-discardfee", "")));
+ if (nFeePerK > HIGH_TX_FEE_PER_KB)
+ InitWarning(AmountHighWarn("-discardfee") + " " +
+ _("This is the transaction fee you may discard if change is smaller than dust at this level"));
+ CWallet::m_discard_rate = CFeeRate(nFeePerK);
+ }
if (IsArgSet("-paytxfee"))
{
CAmount nFeePerK = 0;
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index 574fd8710d..bcd7e4b4ee 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -45,6 +45,8 @@ static const unsigned int DEFAULT_KEYPOOL_SIZE = 1000;
static const CAmount DEFAULT_TRANSACTION_FEE = 0;
//! -fallbackfee default
static const CAmount DEFAULT_FALLBACK_FEE = 20000;
+//! -m_discard_rate default
+static const CAmount DEFAULT_DISCARD_FEE = 10000;
//! -mintxfee default
static const CAmount DEFAULT_TRANSACTION_MINFEE = 1000;
//! minimum recommended increment for BIP 125 replacement txs
@@ -949,7 +951,7 @@ public:
* Insert additional inputs into the transaction by
* calling CreateTransaction();
*/
- bool FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, int& nChangePosInOut, std::string& strFailReason, bool lockUnspents, const std::set<int>& setSubtractFeeFromOutputs, CCoinControl, bool keepReserveKey = true);
+ bool FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, int& nChangePosInOut, std::string& strFailReason, bool lockUnspents, const std::set<int>& setSubtractFeeFromOutputs, CCoinControl);
bool SignTransaction(CMutableTransaction& tx);
/**
@@ -969,6 +971,7 @@ public:
static CFeeRate minTxFee;
static CFeeRate fallbackFee;
+ static CFeeRate m_discard_rate;
/**
* Estimate the minimum fee considering user set parameters
* and the required fee
generated by cgit v1.2.3 (git 2.26.2) at 2024-10-08 18:31:30 +0000