[Wallet] Prevent user from paying a non-sense fee

10 years ago · e7876b2979
parent ed3e5e468c
commit e7876b2979
1 changed files with 3 additions and 0 deletions
--- a/src/wallet.cpp
+++ b/src/wallet.cpp
@ -1633,6 +1633,9 @@ CAmount CWallet::GetMinimumFee(unsigned int nTxBytes, unsigned int nConfirmTarge
 {
    // payTxFee is user-set "I want to pay this much"
    CAmount nFeeNeeded = payTxFee.GetFee(nTxBytes);
+    // prevent user from paying a non-sense fee (like 1 satoshi): 0 < fee < minRelayFee
+    if (nFeeNeeded > 0 && nFeeNeeded < ::minRelayTxFee.GetFee(nTxBytes))
+        nFeeNeeded = ::minRelayTxFee.GetFee(nTxBytes);
    // User didn't set: use -txconfirmtarget to estimate...
    if (nFeeNeeded == 0)
        nFeeNeeded = pool.estimateFee(nConfirmTarget).GetFee(nTxBytes);