diff options
| -rw-r--r-- | src/wallet/rpcwallet.cpp | 42 |
1 files changed, 25 insertions, 17 deletions
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp index b62fbeb10e..9ae36653b8 100644 --- a/src/wallet/rpcwallet.cpp +++ b/src/wallet/rpcwallet.cpp @@ -2739,6 +2739,10 @@ UniValue bumpfee(const JSONRPCRequest& request) throw JSONRPCError(RPC_MISC_ERROR, "Transaction does not have a change output"); } + // signature sizes can vary by a byte, so add 1 for each input when calculating the new fee + int64_t txSize = GetVirtualTransactionSize(*(wtx.tx)); + const int64_t maxNewTxSize = txSize + wtx.tx->vin.size(); + // optional parameters bool specifiedConfirmTarget = false; int newConfirmTarget = nTxConfirmTarget; @@ -2764,10 +2768,11 @@ UniValue bumpfee(const JSONRPCRequest& request) } } else if (options.exists("totalFee")) { totalFee = options["totalFee"].get_int64(); - if (totalFee <= 0) { - throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid totalFee (cannot be <= 0)"); - } else if (totalFee > maxTxFee) { - throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid totalFee (cannot be higher than maxTxFee)"); + CAmount requiredFee = CWallet::GetRequiredFee(maxNewTxSize); + if (totalFee < requiredFee ) { + throw JSONRPCError(RPC_INVALID_PARAMETER, + strprintf("Insufficient totalFee (cannot be less than required fee %s)", + FormatMoney(requiredFee))); } } @@ -2776,10 +2781,6 @@ UniValue bumpfee(const JSONRPCRequest& request) } } - // signature sizes can vary by a byte, so add 1 for each input when calculating the new fee - int64_t txSize = GetVirtualTransactionSize(*(wtx.tx)); - const int64_t maxNewTxSize = txSize + wtx.tx->vin.size(); - // calculate the old fee and fee-rate CAmount nOldFee = wtx.GetDebit(ISMINE_SPENDABLE) - wtx.tx->GetValueOut(); CFeeRate nOldFeeRate(nOldFee, txSize); @@ -2794,24 +2795,31 @@ UniValue bumpfee(const JSONRPCRequest& request) nNewFee = totalFee; nNewFeeRate = CFeeRate(totalFee, maxNewTxSize); } else { - // use the user-defined payTxFee if possible, otherwise use smartfee / fallbackfee - if (!specifiedConfirmTarget && payTxFee.GetFeePerK() != 0) { - nNewFeeRate = payTxFee; - } else { - nNewFeeRate = mempool.estimateSmartFee(newConfirmTarget); + // if user specified a confirm target then don't consider any global payTxFee + if (specifiedConfirmTarget) { + nNewFee = CWallet::GetMinimumFee(maxNewTxSize, newConfirmTarget, mempool, CAmount(0)); } - if (nNewFeeRate.GetFeePerK() == 0) { - nNewFeeRate = CWallet::fallbackFee; + // otherwise use the regular wallet logic to select payTxFee or default confirm target + else { + nNewFee = CWallet::GetMinimumFee(maxNewTxSize, newConfirmTarget, mempool); } + nNewFeeRate = CFeeRate(nNewFee, maxNewTxSize); + // new fee rate must be at least old rate + minimum incremental relay rate if (nNewFeeRate.GetFeePerK() < nOldFeeRate.GetFeePerK() + ::incrementalRelayFee.GetFeePerK()) { nNewFeeRate = CFeeRate(nOldFeeRate.GetFeePerK() + ::incrementalRelayFee.GetFeePerK()); + nNewFee = nNewFeeRate.GetFee(maxNewTxSize); } - - nNewFee = nNewFeeRate.GetFee(maxNewTxSize); } + // Check that in all cases the new fee doesn't violate maxTxFee + if (nNewFee > maxTxFee) { + throw JSONRPCError(RPC_MISC_ERROR, + strprintf("Specified or calculated fee %s is too high (cannot be higher than maxTxFee %s)", + FormatMoney(nNewFee), FormatMoney(maxTxFee))); + } + // check that fee rate is higher than mempool's minimum fee // (no point in bumping fee if we know that the new tx won't be accepted to the mempool) // This may occur if the user set TotalFee or paytxfee too low, if fallbackfee is too low, or, perhaps, |