Module transaction_utils

Transaction utilities

Constants

MAX_VALUE_MSAT

The maximum value of an input or output in milli satoshi

MIN_CHAN_DUST_LIMIT_SATOSHIS

The minimum value of the dust limit in satoshis - for segwit in general This is also the minimum negotiated dust limit

MIN_DUST_LIMIT_SATOSHIS

The minimum value of the dust limit in satoshis - for p2wsh outputs (such as anchors)

Functions

create_spending_transaction

Create a spending transaction, helper function used in [KeysManagerClient::spend_spendable_outputs].

decode_commitment_number

Decode a commitment transaction and return the commitment number if it is a commitment tx

decode_commitment_tx

Decode a commitment transaction and return the outputs that we need to watch. Our main output index and any HTLC output indexes are returned.

maybe_add_change_output

Possibly adds a change output to the given transaction, always doing so if there are excess funds available beyond the requested feerate. Assumes at least one input will have a witness (ie spends a segwit output). Returns an Err(()) if the requested feerate cannot be met.