Feature 106/107: option_simplified_update. #867
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This feature turns on a simplification of the current update scheme: 1. Turns are taken, with all updates settling before switching sides. 2. update_fee is always a separate commitment by itself. This is a fairly easy addition for existing implementations, but a much-reduced burden for new implementations. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Add update_noop, clean up whitespace and mark option requirements on yield msg.
1. Clarify what happens when optimistic implementation reconnects. 2. Assume we use quiescence for channel feature upgrade, so no complex reestablishment handling
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instagibbs
reviewed
Apr 28, 2022
| - During this node's turn: | ||
| - if it receives an update message or `commitment_signed`: | ||
| - if it has sent its own update or `commitment_signed`: | ||
| - MUST ignore the message |
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the remote node sends a commitment_signed during the local node's turn, after the local node has sent a commitment_signed message though? diagram, step (5) and the response (6)...
22 tasks
instagibbs
reviewed
May 6, 2022
| @@ -1119,6 +1232,8 @@ given in [BOLT #3](03-transactions.md#fee-calculation). | |||
| The node _responsible_ for paying the Bitcoin fee: | |||
| - SHOULD send `update_fee` to ensure the current fee rate is sufficient (by a | |||
| significant margin) for timely processing of the commitment transaction. | |||
| - if `option_simplified_update` is negotiated: | |||
| - MUST NOT mix `update_fee` with other updates in the same commitment. | |||
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does this mean any other updates, including other update_fee messages in same turn, or just update_fee vs all other update types?
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Good q! I think it means the former, but should be more explicit!
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This was referenced Aug 22, 2023
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This was referenced Sep 6, 2024
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This feature turns on a simplification of the current update scheme:
This is a fairly easy addition for existing implementations, but
a much-reduced burden for new implementations.