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Echo channel_type in accept_channel

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One argument for adding a feature bit for channel types was to make things
more explicit and remove ambiguity.

When sending `open_channel`, we require funders to include a `channel_type`,
so it would make sense to require fundees to echo that `channel_type`
back to explicitly confirm that they're ok with this `channel_type`.
This commit is contained in:
t-bast 2022-02-28 23:40:31 +01:00 committed by neil saitug
parent e60d594abf
commit 32a76e80c7
1 changed files with 4 additions and 2 deletions
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6
02-peer-protocol.md
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@ -348,8 +348,8 @@ The sender:
avoid double-spending of the funding transaction. avoid double-spending of the funding transaction.
- MUST set `channel_reserve_satoshis` greater than or equal to `dust_limit_satoshis` from the `open_channel` message. - MUST set `channel_reserve_satoshis` greater than or equal to `dust_limit_satoshis` from the `open_channel` message.
- MUST set `dust_limit_satoshis` less than or equal to `channel_reserve_satoshis` from the `open_channel` message. - MUST set `dust_limit_satoshis` less than or equal to `channel_reserve_satoshis` from the `open_channel` message.
- if it sets `channel_type`: - if `option_channel_type` was negotiated:
- MUST set it to the `channel_type` from `open_channel` - MUST set `channel_type` to the `channel_type` from `open_channel`
The receiver: The receiver:
- if `minimum_depth` is unreasonably large: - if `minimum_depth` is unreasonably large:
@ -360,6 +360,8 @@ The receiver:
- MUST reject the channel. - MUST reject the channel.
- if `channel_type` is set, and `channel_type` was set in `open_channel`, and they are not equal types: - if `channel_type` is set, and `channel_type` was set in `open_channel`, and they are not equal types:
- MUST reject the channel. - MUST reject the channel.
- if `option_channel_type` was negotiated but the message doesn't include a `channel_type`:
- MAY reject the channel.
Other fields have the same requirements as their counterparts in `open_channel`. Other fields have the same requirements as their counterparts in `open_channel`.