bitcoin-s/docs/fee-provider/fee-provider.md
2020-07-08 10:22:59 -05:00

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fee-provider Fee Provider

Fee Provider

Bitcoin-S has a FeeProvider that is used to fetch fee rates. Currently, Bitcoin-s has a couple implemented, one being a BitcoindRpcClient, which will use estimateSmartFee to calculate a fee rate. Another uses bitcoiner.live's api to get a fee rate.

Any FeeProvider can be passed to a Wallet which will be used to calculate fees for transactions when one is not specified.

HttpFeeRateProvider

A HttpFeeRateProvider is a FeeProvider that uses an outside API to get fee rates. These can be hooked up to any website's API as long as you can provide a URI and a function to convert the response to a FeeUnit.

There also exists CachedHttpFeeRateProvider, which will cache the response for the cacheDuration as to prevent hitting request limits and save on api calls.

Checkout BitcoinerLiveFeeRateProvider's implementation for an example.