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Cancel back outgoing dust htlcs before commitment is confirmed. #9068

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Cancel back outgoing dust htlcs before commitment is confirmed. #9068

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Commits on Oct 17, 2024

  1. contractcourt: improve robustness

    @ziggie1984
    ziggie1984 committed Oct 17, 2024
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  2. contratcourt: refactor resolving htlc logic 

    Refactor the part where we are failing back the incoming htlc
when the channel of the corresponding outgoing htlc is force
closed.
    @ziggie1984
    ziggie1984 committed Oct 17, 2024
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  3. contractcourt: enhance chainAction type 

    We distinguish between dangling and dust htlcs. This does not
change any logic but only introduces new types to later act on them
differently when we begin to fail dust htlcs earlier in a later
commit.
    @ziggie1984
    ziggie1984 committed Oct 17, 2024
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  4. multi: fix typo and add comment.

    @ziggie1984
    ziggie1984 committed Oct 17, 2024
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  5. contractcourt: Cancel dust htlcs prematurely 

    We will now cancel dust htlcs on the local/remote commits after
we decided to go onchain. This can be done because dust cannot
be enforced onchain and therefore there is no way to also reveil
the preimage onchain.
    @ziggie1984
    ziggie1984 committed Oct 17, 2024
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  6. contratcourt: dont consider dust htlc for anchor sweep 

    Now that we cancel dust htlcs prematurely even before the
commitment tx is confirmed we don't consider dust htlcs when
creating the cpfp transaction.
    @ziggie1984
    ziggie1984 committed Oct 17, 2024
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  7. itest: adopt itests for the new behavior 

    Now outgoing dust-htlcs are canceled back before the commitment
is confirmed onchain.
    @ziggie1984
    ziggie1984 committed Oct 17, 2024
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  8. docs: add release-notes for LND 19

    @ziggie1984
    ziggie1984 committed Oct 17, 2024
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