fix: remove mentioning of BIP-125

src/init.cpp

@@ -747,7 +747,7 @@ void SetupServerArgs(ArgsManager& argsman)
 
     argsman.AddArg("-acceptnonstdtxn", strprintf("Relay and mine \"non-standard\" transactions (%sdefault: %u)", "testnet/regtest only; ", !testnetChainParams->RequireStandard()), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::NODE_RELAY);
     argsman.AddArg("-dustrelayfee=<amt>", strprintf("Fee rate (in %s/kB) used to define dust, the value of an output such that it will cost more than its value in fees at this fee rate to spend it. (default: %s)", CURRENCY_UNIT, FormatMoney(DUST_RELAY_TX_FEE)), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::NODE_RELAY);
-    argsman.AddArg("-incrementalrelayfee=<amt>", strprintf("Fee rate (in %s/kB) used to define cost of relay, used for mempool limiting and BIP 125 replacement. (default: %s)", CURRENCY_UNIT, FormatMoney(DEFAULT_INCREMENTAL_RELAY_FEE)), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::NODE_RELAY);
+    argsman.AddArg("-incrementalrelayfee=<amt>", strprintf("Fee rate (in %s/kB) used to define cost of relay, used for mempool limiting. (default: %s)", CURRENCY_UNIT, FormatMoney(DEFAULT_INCREMENTAL_RELAY_FEE)), ArgsManager::ALLOW_ANY | ArgsManager::DEBUG_ONLY, OptionsCategory::NODE_RELAY);
     argsman.AddArg("-bytespersigop", strprintf("Equivalent bytes per sigop in transactions for relay and mining (default: %u)", DEFAULT_BYTES_PER_SIGOP), ArgsManager::ALLOW_ANY, OptionsCategory::NODE_RELAY);
     argsman.AddArg("-datacarrier", strprintf("Relay and mine data carrier transactions (default: %u)", DEFAULT_ACCEPT_DATACARRIER), ArgsManager::ALLOW_ANY, OptionsCategory::NODE_RELAY);
     argsman.AddArg("-datacarriersize", strprintf("Maximum size of data in data carrier transactions we relay and mine (default: %u)", MAX_OP_RETURN_RELAY), ArgsManager::ALLOW_ANY, OptionsCategory::NODE_RELAY);
@@ -1255,8 +1255,7 @@ bool AppInitParameterInteraction(const ArgsManager& args)
     int64_t nMempoolSizeMin = args.GetIntArg("-limitdescendantsize", DEFAULT_DESCENDANT_SIZE_LIMIT) * 1000 * 40;
     if (nMempoolSizeMax < 0 || nMempoolSizeMax < nMempoolSizeMin)
         return InitError(strprintf(_("-maxmempool must be at least %d MB"), std::ceil(nMempoolSizeMin / 1000000.0)));
-    // incremental relay fee sets the minimum feerate increase necessary for BIP 125 replacement in the mempool
-    // and the amount the mempool min fee increases above the feerate of txs evicted due to mempool limiting.
+    // incremental relay fee sets the amount the mempool min fee increases above the feerate of txs evicted due to mempool limiting.
     if (args.IsArgSet("-incrementalrelayfee")) {
         if (std::optional<CAmount> inc_relay_fee = ParseMoney(args.GetArg("-incrementalrelayfee", ""))) {
             ::incrementalRelayFee = CFeeRate{inc_relay_fee.value()};

src/policy/policy.h

@@ -33,7 +33,7 @@ static constexpr unsigned int MAX_P2SH_SIGOPS{15};
 static constexpr unsigned int MAX_STANDARD_TX_SIGOPS{4000};
 /** Default for -maxmempool, maximum megabytes of mempool memory usage */
 static constexpr unsigned int DEFAULT_MAX_MEMPOOL_SIZE{300};
-/** Default for -incrementalrelayfee, which sets the minimum feerate increase for mempool limiting or BIP 125 replacement **/
+/** Default for -incrementalrelayfee, which sets the minimum feerate increase for mempool limiting **/
 static constexpr unsigned int DEFAULT_INCREMENTAL_RELAY_FEE{1000};
 /** Default for -bytespersigop */
 static constexpr unsigned int DEFAULT_BYTES_PER_SIGOP{20};

src/wallet/test/wallet_tests.cpp

@@ -49,7 +49,6 @@ extern RPCHelpMan addmultisigaddress();
 // Ensure that fee levels defined in the wallet are at least as high
 // as the default levels for node policy.
 static_assert(DEFAULT_TRANSACTION_MINFEE >= DEFAULT_MIN_RELAY_TX_FEE, "wallet minimum fee is smaller than default relay fee");
-static_assert(WALLET_INCREMENTAL_RELAY_FEE >= DEFAULT_INCREMENTAL_RELAY_FEE, "wallet incremental fee is smaller than default incremental relay fee");
 
 BOOST_FIXTURE_TEST_SUITE(wallet_tests, WalletTestingSetup)
 

src/wallet/wallet.h

@@ -99,8 +99,6 @@ static const CAmount DEFAULT_CONSOLIDATE_FEERATE{1000}; // 10 sat/vbyte
 static const CAmount DEFAULT_MAX_AVOIDPARTIALSPEND_FEE = 0;
 //! discourage APS fee higher than this amount
 constexpr CAmount HIGH_APS_FEE{COIN / 10000};
-//! minimum recommended increment for BIP 125 replacement txs
-static const CAmount WALLET_INCREMENTAL_RELAY_FEE = 5000;
 //! Default for -spendzeroconfchange
 static const bool DEFAULT_SPEND_ZEROCONF_CHANGE = true;
 //! Default for -walletrejectlongchains

test/functional/test_framework/messages.py

@@ -40,7 +40,7 @@
 COIN = 100000000  # 1 btc in satoshis
 MAX_MONEY = 21000000 * COIN
 
-BIP125_SEQUENCE_NUMBER = 0xfffffffd  # Sequence number that is BIP 125 opt-in and BIP 68-opt-out
+BIP125_SEQUENCE_NUMBER = 0xfffffffd  # Sequence number that is BIP 125 opt-in and BIP 68-opt-out -- not used in DASH
 SEQUENCE_FINAL = 0xffffffff  # Sequence number that disables nLockTime if set for every input of a tx
 
 MAX_PROTOCOL_MESSAGE_LENGTH = 3 * 1024 * 1024  # Maximum length of incoming protocol messages