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.
Synopsis
Declared in <util/rbf.h>
bool
SignalsOptInRBF(CTransaction const& tx);Description
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.
Return Value
true if any input signals opt‐in replaceability under BIP 125.
Parameters
Name |
Description |
tx |
The transaction whose input sequence numbers are inspected. |
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