Module lightning_signer::util::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

• 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.