Channel Establishment for V3 Channels #3792
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Useful for the commits that follow where we add more downgrade tests.
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| @@ -16153,22 +16154,28 @@ mod tests { | |||
| } | |||
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| #[test] | |||
| fn test_anchors_zero_fee_htlc_tx_fallback() { | |||
| fn test_anchors_zero_fee_htlc_tx_downgrade() { | |||
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Congrats, you touched it, now you get to move it out of channelmanager into some other test-specific file that isn't 15000 lines of code 😂
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Done this in a follow up in #3797 so that move + format can be reviewed separately.
lightning/src/util/config.rs
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| /// back to a `anchors_zero_fee_htlc` (if [`Self::negotiate_anchors_zero_fee_htlc_tx`] | ||
| /// is set) or `static_remote_key` channel. | ||
| /// | ||
| /// *Implies [`Self::negotiate_anchors_zero_fee_htlc_tx`].* |
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These are in conflict - one says we'll fall back if its set, the other says that its implied (ie always set) if we set this flag.
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✅ Added second reviewer: @valentinewallace |
To allow testing along the way in this PR, turn on negotiation of zero fee channels. Co-authored-by: Matt Corallo <git@bluematt.me>
Sender: MUST set `feerate_per_kw` to zero Receiver: MUST fail the channel if `feerate_per_kw` != 0 Co-authored-by: Matt Corallo <git@bluematt.me>
Like anchor channels, these channels require that the user reserves a UTXO to bump the channel. If we automatically accept this channel type and the user does not have such reserve available, they are at risk of losing funds because they cannot fee bump the channel.
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Removed conflicting docs statement + opened followup for test separation (felt wrong to do move+format in the same PR, happy to include if we want it in here). |
This PR updates the channel establishment flow to allow and validate V3 channels (behind
testflag).