walletkit: add SubmitPackage client method#280
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Add WalletKit.SubmitPackage, wrapping lnd's new WalletKit.SubmitPackage RPC. It serializes the topologically-sorted transactions, forwards the optional per-tx max fee rate (nil uses the node default), and maps the proto response back to the btcjson.SubmitPackageResult callers expect.
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Summary
Adds
WalletKitClient.SubmitPackage, wrapping lnd's newWalletKit.SubmitPackageRPC. It serializes the topologically-sorted transactions, forwards an optional
per-transaction max fee rate (
niluses the node default), and maps the protoresponse back to the
btcjson.SubmitPackageResultcallers expect.This lets a zero-fee v3/TRUC parent be relayed via its fee-paying CPFP child
(bitcoind's
submitpackage) without the caller needing a separate connectionto the chain backend.
TODO before un-drafting
go.modfrom the forkreplacesto released lnd / btcwallet versions.