Lightning Specification Meeting 2022/07/04 #1007

The meeting will take place on Monday 2022/07/04 at 8pm UTC (5:30am Adelaide time) on Libera Chat IRC #lightning-dev. It is open to the public.

A video link is available for higher bandwidth communication: https://meet.jit.si/Lightning-Spec-Meeting

Pull Request Review

• Channel update flags BOLT #7: Make channel_update always have htlc_maximum_msat. #996 or Bolt7: add channel update flag for scid alias #999
• Grace period for older channel updates Add grace period for older channel parameters #1001
• Grace period for channel closes gossip: delay considering a channel edge deleted for 12-blocks #1004
• Clarify coop close requirements BOLT#02: clarify coop close requirements #970
• Route blinding Route Blinding (Feature 24/25) #765
• Onion messages BOLT 7: Onion message support (features 38/39) #759
• Offers Offers #798
• Add dust exposure threshold Add a max_dust_htlc_exposure_msat #919
• Taproot extension-bolt: simple taproot channels (feature 80/81) #995

Waiting for interop

• Handle update_fee during shutdown BOLT 2: forget the check about update_* messages, and check what must not happens during shutdown #972
• Graph dump on gossip_timestamp_filter Inconsistent behavior around graph dump on gossip_timestamp_filter. #980
• Dual funding interactive-tx: Add dual-funding flow, using the interactive tx protocol (feature 28/29) #851
• Websocket transport websocket address type: allow transport over RFC6455 #891
• Don't force close until error is received after channel_reestablish Nodes shouldn't publish their commitment when receiving outdated channel_reestablish #934
• Dynamic DNS support in gossip messages BOLT 7: add gossip address descriptor type DNS hostname #911

Long Term Updates

• Liquidity ads option_will_fund: liquidity ads #878
• Splicing Splice draft (feature 62/63) #863
• Simplified commitment Feature 106/107: option_simplified_update. #867
• Hold htlcs before forwarding Async Payments: Add the ability to hold HTLCs before forwarding (FEAT 52/53) #989
• Trampoline routing Trampoline Routing (2021 edition) (Feature 56/57) #829 and Trampoline onion format (Feature 56/57) #836
• Upfront payments / DoS protection Hold fees #843
• Peer storage backup Peer backup storage (feature 40/41/42/43) #881
• Anonymous gossip

Backlog

The following are topics that we should discuss at some point, so if we have time to discuss them great, otherwise they slip to the next meeting.

• lnprototest (https://github.com/rustyrussell/lnprototest)