The replacement transaction must pay more fees than the original transactions. The additional fees must pay for the replacement's bandwidth at or above the incremental relay feerate.
Declared in <policy/rbf.h>
std::optional<std::string>
PaysForRBF(
CAmount original_fees,
CAmount replacement_fees,
size_t replacement_vsize,
CFeeRate relay_fee,
Txid const& txid);error string if fees are insufficient, otherwise std::nullopt.
| Name | Description |
|---|---|
| original_fees [in] | Total modified fees of original transaction(s). |
| replacement_fees [in] | Total modified fees of replacement transaction(s). |
| replacement_vsize [in] | Total virtual size of replacement transaction(s). |
| relay_fee [in] | The node's minimum feerate for transaction relay. |
| txid [in] | Transaction ID, included in the error message if violation occurs. |