diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp index 5cbdd1021..428531c3d 100644 --- a/src/wallet/rpcwallet.cpp +++ b/src/wallet/rpcwallet.cpp @@ -217,14 +217,8 @@ static void SetFeeEstimateMode(const CWallet& wallet, CCoinControl& cc, const Un if (!estimate_mode.isNull() && estimate_mode.get_str() != "unset") { throw JSONRPCError(RPC_INVALID_PARAMETER, "Cannot specify both estimate_mode and fee_rate"); } - CFeeRate fee_rate_in_sat_vb{CFeeRate(AmountFromValue(fee_rate), COIN)}; - if (override_min_fee) { - if (fee_rate_in_sat_vb <= CFeeRate(0)) { - throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("Invalid fee_rate %s (must be greater than 0)", fee_rate_in_sat_vb.ToString(FeeEstimateMode::SAT_VB))); - } - cc.fOverrideFeeRate = true; - } - cc.m_feerate = fee_rate_in_sat_vb; + cc.m_feerate = CFeeRate(AmountFromValue(fee_rate), COIN); + if (override_min_fee) cc.fOverrideFeeRate = true; // Default RBF to true for explicit fee_rate, if unset. if (cc.m_signal_bip125_rbf == nullopt) cc.m_signal_bip125_rbf = true; return; @@ -3148,11 +3142,7 @@ void FundTransaction(CWallet* const pwallet, CMutableTransaction& tx, CAmount& f if (options.exists("estimate_mode")) { throw JSONRPCError(RPC_INVALID_PARAMETER, "Cannot specify both estimate_mode and feeRate"); } - CFeeRate fee_rate(AmountFromValue(options["feeRate"])); - if (fee_rate <= CFeeRate(0)) { - throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("Invalid feeRate %s (must be greater than 0)", fee_rate.ToString(FeeEstimateMode::BTC_KVB))); - } - coinControl.m_feerate = fee_rate; + coinControl.m_feerate = CFeeRate(AmountFromValue(options["feeRate"])); coinControl.fOverrideFeeRate = true; } diff --git a/test/functional/rpc_fundrawtransaction.py b/test/functional/rpc_fundrawtransaction.py index f987867e6..8ee0ecab0 100755 --- a/test/functional/rpc_fundrawtransaction.py +++ b/test/functional/rpc_fundrawtransaction.py @@ -721,11 +721,17 @@ class RawTransactionsTest(BitcoinTestFramework): result2 = node.fundrawtransaction(rawtx, {"feeRate": 2 * self.min_relay_tx_fee}) result3 = node.fundrawtransaction(rawtx, {"fee_rate": 10 * btc_kvb_to_sat_vb * self.min_relay_tx_fee}) result4 = node.fundrawtransaction(rawtx, {"feeRate": 10 * self.min_relay_tx_fee}) + # Test that funding non-standard "zero-fee" transactions is valid. + result5 = self.nodes[3].fundrawtransaction(rawtx, {"fee_rate": 0}) + result6 = self.nodes[3].fundrawtransaction(rawtx, {"feeRate": 0}) + result_fee_rate = result['fee'] * 1000 / count_bytes(result['hex']) assert_fee_amount(result1['fee'], count_bytes(result2['hex']), 2 * result_fee_rate) assert_fee_amount(result2['fee'], count_bytes(result2['hex']), 2 * result_fee_rate) assert_fee_amount(result3['fee'], count_bytes(result3['hex']), 10 * result_fee_rate) assert_fee_amount(result4['fee'], count_bytes(result3['hex']), 10 * result_fee_rate) + assert_fee_amount(result5['fee'], count_bytes(result5['hex']), 0) + assert_fee_amount(result6['fee'], count_bytes(result6['hex']), 0) # With no arguments passed, expect fee of 141 satoshis. assert_approx(node.fundrawtransaction(rawtx)["fee"], vexp=0.00000141, vspan=0.00000001) @@ -752,19 +758,15 @@ class RawTransactionsTest(BitcoinTestFramework): node.fundrawtransaction, rawtx, {"estimate_mode": mode, "conf_target": n, "add_inputs": True}) self.log.info("Test invalid fee rate settings") - assert_raises_rpc_error(-8, "Invalid fee_rate 0.000 sat/vB (must be greater than 0)", - node.fundrawtransaction, rawtx, {"fee_rate": 0, "add_inputs": True}) - assert_raises_rpc_error(-8, "Invalid feeRate 0.00000000 BTC/kvB (must be greater than 0)", - node.fundrawtransaction, rawtx, {"feeRate": 0, "add_inputs": True}) for param, value in {("fee_rate", 100000), ("feeRate", 1.000)}: assert_raises_rpc_error(-4, "Fee exceeds maximum configured by user (e.g. -maxtxfee, maxfeerate)", node.fundrawtransaction, rawtx, {param: value, "add_inputs": True}) assert_raises_rpc_error(-3, "Amount out of range", - node.fundrawtransaction, rawtx, {"fee_rate": -1, "add_inputs": True}) + node.fundrawtransaction, rawtx, {param: -1, "add_inputs": True}) assert_raises_rpc_error(-3, "Amount is not a number or string", - node.fundrawtransaction, rawtx, {"fee_rate": {"foo": "bar"}, "add_inputs": True}) + node.fundrawtransaction, rawtx, {param: {"foo": "bar"}, "add_inputs": True}) assert_raises_rpc_error(-3, "Invalid amount", - node.fundrawtransaction, rawtx, {"fee_rate": "", "add_inputs": True}) + node.fundrawtransaction, rawtx, {param: "", "add_inputs": True}) self.log.info("Test min fee rate checks are bypassed with fundrawtxn, e.g. a fee_rate under 1 sat/vB is allowed") node.fundrawtransaction(rawtx, {"fee_rate": 0.99999999, "add_inputs": True}) diff --git a/test/functional/rpc_psbt.py b/test/functional/rpc_psbt.py index 498197b5e..5840801b0 100755 --- a/test/functional/rpc_psbt.py +++ b/test/functional/rpc_psbt.py @@ -192,26 +192,27 @@ class PSBTTest(BitcoinTestFramework): assert_approx(res1["fee"], 0.055, 0.005) res2 = self.nodes[1].walletcreatefundedpsbt(inputs, outputs, 0, {"feeRate": 0.1, "add_inputs": True}) assert_approx(res2["fee"], 0.055, 0.005) + self.log.info("Test min fee rate checks with walletcreatefundedpsbt are bypassed, e.g. a fee_rate under 1 sat/vB is allowed") res3 = self.nodes[1].walletcreatefundedpsbt(inputs, outputs, 0, {"fee_rate": 0.99999999, "add_inputs": True}) assert_approx(res3["fee"], 0.00000381, 0.0000001) res4 = self.nodes[1].walletcreatefundedpsbt(inputs, outputs, 0, {"feeRate": 0.00000999, "add_inputs": True}) assert_approx(res4["fee"], 0.00000381, 0.0000001) + self.log.info("Test min fee rate checks with walletcreatefundedpsbt are bypassed and that funding non-standard 'zero-fee' transactions is valid") + for param in ["fee_rate", "feeRate"]: + assert_equal(self.nodes[1].walletcreatefundedpsbt(inputs, outputs, 0, {param: 0, "add_inputs": True})["fee"], 0) + self.log.info("Test invalid fee rate settings") - assert_raises_rpc_error(-8, "Invalid fee_rate 0.000 sat/vB (must be greater than 0)", - self.nodes[1].walletcreatefundedpsbt, inputs, outputs, 0, {"fee_rate": 0, "add_inputs": True}) - assert_raises_rpc_error(-8, "Invalid feeRate 0.00000000 BTC/kvB (must be greater than 0)", - self.nodes[1].walletcreatefundedpsbt, inputs, outputs, 0, {"feeRate": 0, "add_inputs": True}) for param, value in {("fee_rate", 100000), ("feeRate", 1)}: assert_raises_rpc_error(-4, "Fee exceeds maximum configured by user (e.g. -maxtxfee, maxfeerate)", self.nodes[1].walletcreatefundedpsbt, inputs, outputs, 0, {param: value, "add_inputs": True}) assert_raises_rpc_error(-3, "Amount out of range", - self.nodes[1].walletcreatefundedpsbt, inputs, outputs, 0, {"fee_rate": -1, "add_inputs": True}) + self.nodes[1].walletcreatefundedpsbt, inputs, outputs, 0, {param: -1, "add_inputs": True}) assert_raises_rpc_error(-3, "Amount is not a number or string", - self.nodes[1].walletcreatefundedpsbt, inputs, outputs, 0, {"fee_rate": {"foo": "bar"}, "add_inputs": True}) + self.nodes[1].walletcreatefundedpsbt, inputs, outputs, 0, {param: {"foo": "bar"}, "add_inputs": True}) assert_raises_rpc_error(-3, "Invalid amount", - self.nodes[1].walletcreatefundedpsbt, inputs, outputs, 0, {"fee_rate": "", "add_inputs": True}) + self.nodes[1].walletcreatefundedpsbt, inputs, outputs, 0, {param: "", "add_inputs": True}) self.log.info("- raises RPC error if both feeRate and fee_rate are passed") assert_raises_rpc_error(-8, "Cannot specify both fee_rate (sat/vB) and feeRate (BTC/kvB)", diff --git a/test/functional/wallet_send.py b/test/functional/wallet_send.py index 376cfdec6..192e9065e 100755 --- a/test/functional/wallet_send.py +++ b/test/functional/wallet_send.py @@ -302,10 +302,16 @@ class WalletSendTest(BitcoinTestFramework): self.test_send(from_wallet=w0, to_wallet=w1, amount=1, conf_target=v, estimate_mode=mode, expect_error=(-3, "Expected type number for conf_target, got {}".format(k))) - # Test setting explicit fee rate just below the minimum. + # Test setting explicit fee rate just below the minimum and at zero. self.log.info("Explicit fee rate raises RPC error 'fee rate too low' if fee_rate of 0.99999999 is passed") self.test_send(from_wallet=w0, to_wallet=w1, amount=1, fee_rate=0.99999999, expect_error=(-4, "Fee rate (0.999 sat/vB) is lower than the minimum fee rate setting (1.000 sat/vB)")) + self.test_send(from_wallet=w0, to_wallet=w1, amount=1, arg_fee_rate=0.99999999, + expect_error=(-4, "Fee rate (0.999 sat/vB) is lower than the minimum fee rate setting (1.000 sat/vB)")) + self.test_send(from_wallet=w0, to_wallet=w1, amount=1, fee_rate=0, + expect_error=(-4, "Fee rate (0.000 sat/vB) is lower than the minimum fee rate setting (1.000 sat/vB)")) + self.test_send(from_wallet=w0, to_wallet=w1, amount=1, arg_fee_rate=0, + expect_error=(-4, "Fee rate (0.000 sat/vB) is lower than the minimum fee rate setting (1.000 sat/vB)")) # TODO: Return hex if fee rate is below -maxmempool # res = self.test_send(from_wallet=w0, to_wallet=w1, amount=1, conf_target=0.1, estimate_mode="sat/b", add_to_wallet=False)