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Channel reestablish: wait for/send error message when behind #7625

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bitromortac opened this issue Jan 11, 2022 · 0 comments
Open

Channel reestablish: wait for/send error message when behind #7625

bitromortac opened this issue Jan 11, 2022 · 0 comments

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@bitromortac
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bitromortac commented Jan 11, 2022 •
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Upon channel reestablishment, if a peer is behind the state it should be, the other peer force closes on the late peer.

There are discussions about the order of events and error messages:
lightning/bolts#942
lightning/bolts#932

If I understand correctly, the late peer should first send an error message and only then, the ahead peer closes. We neither send error messages nor wait on receiving them:

electrum/electrum/lnpeer.py

Line 1059 in bdbd593

if they_are_ahead:

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