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clarify that nodes may support early mutual close

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Pierre-Marie Padiou 2018-01-10 15:08:47 +01:00 • committed by Christian Decker
parent 815182ea26
commit 46c454cb56
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7
02-peer-protocol.md
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@ -412,6 +412,9 @@ along with the `scriptpubkey` it wants to be paid to.
#### Requirements
A sending node:
- if it hasn't sent a `funding_created` (if it is a funder) or a `funding_signed` (if it is a fundee):
- MUST NOT send a `shutdown`
- MAY send a `shutdown` before a `funding_locked`, i.e. before the funding transaction has reached `min_depth`.
- if there are updates pending on the receiving node's commitment transaction:
- MUST NOT send a `shutdown`.
- MUST NOT send an `update_add_htlc` after a `shutdown`.
@ -427,8 +430,12 @@ A sending node:
4. `OP_0` `32` 32-bytes (version 0 pay to witness script hash)
A receiving node:
- if it hasn't received a `funding_signed` (if it is a funder) or a `funding_created` (if it is a fundee):
- SHOULD fail the connection
- if the `scriptpubkey` is not in one of the above forms:
- SHOULD fail the connection.
- if it hasn't sent a `funding_locked` yet:
- MAY reply to a `shutdown` message with a `shutdown`
- once there are no outstanding updates on the peer, UNLESS it has already sent a `shutdown`:
- MUST reply to a `shutdown` message with a `shutdown`
- if both nodes advertised the `option_upfront_shutdown_script` feature, and the receiving node received a non-zero-length `shutdown_scriptpubkey` in `open_channel` or `accept_channel`, and that `shutdown_scriptpubkey` is not equal to `scriptpubkey`: