pub(crate) async fn create_htlc(
funder: &Client,
claim_pk: &str,
expiration_delta: u64,
lock_flag: &str,
lock_value: &str,
) -> Result<(String, String)>Expand description
Fund an HTLC of one thousand sats locked to claim_pk, wait for the
funding transaction to be accepted and return the funding txid and the
contract JSON as the claimer receives them out of band.