Configuration

Every knob has a default. Driver-wide knobs go to with_config, and per-chain ones go with the chain to with_chain:

Rust

let driver = Driver::new(ctx, client, store)
    .with_config(Config {
        poll_interval: Duration::from_secs(5),
        ..Config::default()
    })
    .with_chain(
        Chain::Bitcoin,
        esplora,
        ChainConfig {
            max_fee_rate: 50.0,
            ..ChainConfig::bitcoin()
        },
    )?;

TypeScript

const driver = new Driver(ctx, client, store)
  .withConfig({ pollInterval: 5 })
  .withChain(Chain.Bitcoin, esplora, { maxFeeRate: 50 });

Driver

Knob	Default	Effect
funding_timeout	24 h	From creation, the latest a swap with nothing on chain is canceled. The invoice's expiry or the server's cancel ends it sooner.
poll_interval	15 s	The longest a swap goes unchecked without a server signal.
server_timeout	30 s	How long a server call may go unanswered before it counts as an outage.
fee_conf_target	3 blocks	The confirmation target of every fee estimate.
fee_rate_cache_ttl	30 s	How long a fee estimate is reused. Zero reads it every pass.
refund_timeout	1 h	How long an ended SwapIn is still watched for late deposits.
max_htlc_hold	1008 blocks	The longest a SwapOut's hold invoice may hold the payment. A swap whose invoice holds longer is refused at creation.

Per chain

Knob	Bitcoin	Liquid	Effect
min_confs	3	2	The depth a SwapOut's funds reach before the preimage goes out, and a spend reaches before it ends a swap.
claim_margin	252	2520	The CSV, in blocks, that must remain when a SwapOut's preimage goes out.
max_refund_csv	1008	10080	The longest CSV accepted on a SwapIn deposit. A swap with a longer one is refused at creation.
max_fee_rate	100	1	The highest fee rate any spend pays, in sat/vB. A SwapOut holds its preimage while the estimate is above it.
block_time	600 s	60 s	The expected block interval, to compare a block deadline with a clock one.