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Add support for funding_fee_credit #2875

Merged
merged 2 commits into from
Sep 26, 2024
Merged

Add support for funding_fee_credit #2875

merged 2 commits into from
Sep 26, 2024

Commits on Sep 25, 2024

  1. Add funding_fee_credit feature 

    We add an optional feature that lets on-the-fly funding clients accept
payments that are too small to pay the fees for an on-the-fly funding.
When that happens, the payment amount is added as "fee credit" without
performing an on-chain operation. Once enough fee credit has been
obtained, we can initiate an on-chain operation to create a channel or
a splice by paying part of the fees from the fee credit.

This feature makes more efficient use of on-chain transactions by
trusting that the seller will honor our fee credit in the future. The
fee credit takes precedence over other ways of paying the fees (from
the channel balance or future HTLCs), which guarantees that the fee
credit eventually converges to 0.
    @t-bast
    t-bast committed Sep 25, 2024
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  2. test fixup

    @pm47
    pm47 authored Sep 25, 2024
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