Function bitcoin_rbf::signals_opt_inrbf

pub fn signals_opt_inrbf(tx: &Transaction) -> bool

| Check whether the sequence numbers | on this transaction are signaling opt-in | to replace-by-fee, according to BIP | 125. Allow opt-out of transaction replacement | by setting nSequence > | | MAX_BIP125_RBF_SEQUENCE (SEQUENCE_FINAL-2) | on all inputs. | | SEQUENCE_FINAL-1 is picked to still | allow use of nLockTime by non-replaceable | transactions. All inputs rather than | just one is for the sake of multi-party | protocols, where we don’t want a single | party to be able to disable replacement | by opting out in their own input. |