Fee Tx Builder
The BumpFeeTxBuilder is used to bump the fee on a transaction that has been broadcast and has its RBF flag set to true.
Explicitly tells the wallet that it is allowed to reduce the amount of the output matching this scriptPubKey in order to bump the transaction fee. Without specifying this the wallet will attempt to find a change output to shrink instead. Note that the output may shrink to below the dust limit and therefore be removed. If it is preserved then it is currently not guaranteed to be in the same position as it was originally. Returns an error if scriptPubkey can’t be found among the recipients of the transaction we are bumping.
Enable signaling RBF with a specific nSequence value. This can cause conflicts if the wallet's descriptors contain an "older" (OP_CSV) operator and the given
nsequence is lower than the CSV value. If the
nsequence is higher than
0xFFFFFFFD an error will be thrown, since it would not be a valid nSequence to signal RBF.