wallet: Set preset input sequence through coin control

1 files changed, 12 insertions, 3 deletions

diff --git a/src/wallet/spend.cpp b/src/wallet/spend.cpp
index c3fd695eb9..7ec2775fb1 100644
--- a/src/wallet/spend.cpp
+++ b/src/wallet/spend.cpp
@@ -1150,11 +1150,19 @@ static util::Result<CreatedTransactionResult> CreateTransactionInternal(
     // to avoid conflicting with other possible uses of nSequence,
     // and in the spirit of "smallest possible change from prior
     // behavior."
-    const uint32_t nSequence{coin_control.m_signal_bip125_rbf.value_or(wallet.m_signal_rbf) ? MAX_BIP125_RBF_SEQUENCE : CTxIn::MAX_SEQUENCE_NONFINAL};
+    bool use_anti_fee_sniping = true;
+    const uint32_t default_sequence{coin_control.m_signal_bip125_rbf.value_or(wallet.m_signal_rbf) ? MAX_BIP125_RBF_SEQUENCE : CTxIn::MAX_SEQUENCE_NONFINAL};
     for (const auto& coin : selected_coins) {
-        txNew.vin.emplace_back(coin->outpoint, CScript(), nSequence);
+        std::optional<uint32_t> sequence = coin_control.GetSequence(coin->outpoint);
+        if (sequence) {
+            // If an input has a preset sequence, we can't do anti-fee-sniping
+            use_anti_fee_sniping = false;
+        }
+        txNew.vin.emplace_back(coin->outpoint, CScript(), sequence.value_or(default_sequence));
+    }
+    if (use_anti_fee_sniping) {
+        DiscourageFeeSniping(txNew, rng_fast, wallet.chain(), wallet.GetLastBlockHash(), wallet.GetLastBlockHeight());
     }
-    DiscourageFeeSniping(txNew, rng_fast, wallet.chain(), wallet.GetLastBlockHash(), wallet.GetLastBlockHeight());
 
     // Calculate the transaction fee
     TxSize tx_sizes = CalculateMaximumSignedTxSize(CTransaction(txNew), &wallet, &coin_control);
@@ -1357,6 +1365,7 @@ bool FundTransaction(CWallet& wallet, CMutableTransaction& tx, CAmount& nFeeRet,
             // The input was not in the wallet, but is in the UTXO set, so select as external
             preset_txin.SetTxOut(coins[outPoint].out);
         }
+        preset_txin.SetSequence(txin.nSequence);
     }
 
     auto res = CreateTransaction(wallet, vecSend, nChangePosInOut, coinControl, false);