Meeting Notes 2022 07 25

Releases

• 0.0.109 (https://github.com/lightningdevkit/rust-lightning/milestone/25)
  • Java bindings good, swift bindings good
  • Swift packager also g2g, yay
• 0.0.110 (https://github.com/lightningdevkit/rust-lightning/milestone/27)
  • Few PRs on there, a few in review as well
  • Hopefully this week we can close out all of those and cut the release
  • No issues left aside from one, easy win there, doc fix 1606
  • Matt spent an afternoon hacking up a node.js peermanager socket impl, so if anyone’s using node.js, gr0kchain has one that prob works fine, but i wrote one and tried to be careful about doing it right. Will upload to npm w the next release, but if anyone wants to play around and see if it works that’d be great

Roadmap Progress

• Developer support
  • Messages from conor on discord:
    • “FYI, I added some setup instructions here - https://github.com/lightningdevkit/lightningdevkit.org/pull/133”
    • “Looking for help on Swift/iOS instructions - https://github.com/lightningdevkit/lightningdevkit.org/issues/135”
    • “Also have some incoming design work for case studies/showcases pages - https://www.figma.com/file/DrQtd4mLRi9MiZb4IzETB9/Lightning-dev-kit-site?node-id=1685%3A28550”
• Payment protocols
  • Working on get_route for OMs
  • Need to flip feature bit but may wanna do it conditionally depending on whether an OnionMessenger is present
  • Jeff to update draft PR soon
• Language bindings
  • Progress
• Taproot support
• Anchor outputs
  • Wilmer: been helping move review for 110 forward, last week worked on some htlc changes. So things are moving along
  • ETA first PR: can prob start putting stuff up already, also been wanting to get thru most of it so i don’t have any unnecessary changes put up
  • Have a few refactors that’ll be nice to start putting up

  • PRs total estimate: depends how aggressive i split up the refactors, a few could come out of those. If it’s a lot it most would be pretty trivial. Heavy ones would be actual crafting the events to spend the anchor output and htlc outputs.

  • Matt: a ton of small, trivial PRs is an easy way to get stuff landed
  • Ariard: first could open a draft PR with all the changes to get overall feedback
• Lightning Service Provider (LSP)
  • John carvalho: made progress on the spec. Mostly reached a consensus on how to proceed. There are some proposals for first initial spec, and people are cleaning these up on GH. progressing incrementally but well.
  • https://github.com/BitcoinAndLightningLayerSpecs/meetings
• Storing channels per peer
  • Viktortigerstrom PR
  • Would like to move short_to_chan_info out of channel state
  • Matt: we want a standalone lock on it
  • https://github.com/lightningdevkit/rust-lightning/pull/1507

Dependent Projects

• validating-lightning-signer (https://gitlab.com/lightning-signer/validating-lightning-signer)
  • Waiting on OMs v1 for ECDH keysinterface method
  • Will have a website soon
  • Replaced absolute fee policies w feerate relative policies, meaning we consider the size of the methods involved, which allows them to be much tighter
• Sensei (https://github.com/L2-Technology/sensei)
• Synonym (https://github.com/synonymdev/ldk-node-js)
  • Open sourced both gr0kchain’s work on nodejs ldk, which now includes keeping up w wasm in there too. We are still implementing our own RN ldk, but we also open sourced that as well. That’s in a more complete stage but in alpha, not fully tested. Noted some differentiations about how yo might be interested in it instead of BW’s LDK RN impl
  • https://github.com/synonymdev/react-native-ldk
  • https://github.com/synonymdev/ldk-node-js
  • Gr0kchain: matt helping me address stuff, atm just having an issue with nodejs’s event vs the way you work w async design pattern on the rust side, but will reach out if i’m blocked. Also implemented a docker container for building the bindings, noticed it’s useful, so if anyone’s interested in that it’s available.
  • Matt: i would like to look into that event thing today, bc that still seems weird to me.
  • Gr0kchain: got it to the point where inbound peers are connecting, outbound not working and logs uninformative. For inbound, get to a point where it halts and the best i can do is get a copy of lnd sample up, and comparing logs and using wireshark and seeing where the conversation is going.
  • Gr0kchain: will get you a tcpdump

Spec (https://github.com/lightning/bolts/issues/1007) - held 2022/07/18

• Channel update flags #996 or #999
• Grace period for older channel updates #1001
• Grace period for channel closes #1004
• Clarify coop close requirements #970
• Route blinding #765
• Onion messages #759
• Offers #798

Misc

• review begs?