lnd/docs/release-notes/release-notes-0.19.0.md

Release Notes

• Bug Fixes
• New Features
  • Functional Enhancements
  • RPC Additions
  • lncli Additions
• Improvements
  • Functional Updates
  • RPC Updates
  • lncli Updates
  • Breaking Changes
  • Performance Improvements
• Technical and Architectural Updates
  • BOLT Spec Updates
  • Testing
  • Database
  • Code Health
  • Tooling and Documentation

Bug Fixes

• Fixed a bug to correctly propagate mission control and debug level config values to the main LND config struct so that the GetDebugInfo response is accurate.

• Fixed a bug where we would not signal an error when trying to bump a non-anchor channel but instead report a successful cpfp registration although no fee bumping is possible for non-anchor channels anyways.

• Fixed a bug where a negative fee limit for SendPaymentV2 would lead to omitting the fee limit check.

• Use the required route blinding feature-bit for invoices containing blinded paths.

• Fix a bug that prevented a graceful shutdown of LND during the main chain backend sync check in certain cases.

• Fixed a bug where dust htlcs although not being able to be resolved onchain were not canceled back before the commitment tx was confirmed causing potentially force closes of the incoming channel.

• Fixed a bug found in the mission control store that can block the shutdown process of LND.

• Make sure the RPC clients used to access the chain backend are properly shutdown.

• Fixed a bug where the peer may block the shutdown process of lnd.

• Fixed a case where the confirmation notification may be missed.

• Make the contract resolutions for the channel arbitrator optional

New Features

• Support for experimental endorsement signal relay was added. This signal has no impact on routing, and is deployed experimentally to assist ongoing channel jamming research.

• Add initial support for quiescence. This is a protocol gadget required for Dynamic Commitments and Splicing that will be added later.

Functional Enhancements

• Add ability to paginate wallet transactions.

RPC Additions

• Add a new rpc endpoint BumpForceCloseFee which moves the functionality soley available in the lncli to LND hence making it more universal.

• The walletrpc.FundPsbt RPC method now has an option to specify the fee as sat_per_kw which allows for more precise fees.

• The walletrpc.FundPsbt method now has a new option to specify the maximum fee to output amounts ratio.

lncli Additions

• A pre-generated macaroon root key can now be specified in lncli create and lncli createwatchonly to allow for deterministic macaroon generation.

• The lncli wallet fundpsbt sub command now has a --sat_per_kw flag to specify more precise fee rates.

• The lncli wallet fundpsbt command now has a --max_fee_ratio argument to specify the max fees to output amounts ratio.

Improvements

Functional Updates

• Allow the compression of logs during rotation with ZSTD via the logging.file.compressor startup argument.

• The SCB file now [contains more data][https://github.com/lightningnetwork/lnd/pull/8183] that enable a last resort rescue for certain cases where the peer is no longer around.

• LND updates channel.backup file at shutdown time.

RPC Updates

• Some RPCs that previously just returned an empty response message now at least return a short status message to help command line users to better understand that the command was executed successfully and something was executed or initiated to run in the background. The following CLI commands now don't just return an empty response ({}) anymore:
  • lncli wallet releaseoutput (WalletKit.ReleaseOutput RPC)
  • lncli wallet accounts import-pubkey (WalletKit.ImportPublicKey RPC)
  • lncli wallet labeltx (WalletKit.LabelTransaction RPC)
  • lncli sendcustom (Lightning.SendCustomMessage RPC)
  • lncli connect (Lightning.ConnectPeer RPC)
  • lncli disconnect (Lightning.DisconnectPeer RPC)
  • lncli stop (Lightning.Stop RPC)
  • lncli deletepayments (Lightning.DeleteAllPaymentsResponse RPC)
  • lncli abandonchannel (Lightning.AbandonChannel RPC)
  • lncli restorechanbackup (Lightning.RestoreChannelBackups RPC)
  • lncli verifychanbackup (Lightning.VerifyChanBackup RPC)
• The ForwardInterceptor's MODIFY option will merge any custom range TLVs provided with the existing set of records on the HTLC, overwriting any conflicting values with those supplied by the API.

lncli Updates

Code Health

• Add retry logic for watchtower block fetching with a max number of attempts and exponential back-off.

• Moved profile related config settings to its own dedicated group. The old ones still work but will be removed in a future release.

• Update to use structured logging. This also introduces a new --logging.console.disable option to disable logs being written to stdout and a new --logging.file.disable option to disable writing logs to the standard log file. It also adds --logging.console.no-timestamps and --logging.file.no-timestamps which can be used to omit timestamps in log messages for the respective loggers. The new --logging.console.call-site and --logging.file.call-site options can be used to include the call-site of a log line. The options for this include "off" (default), "short" (source file name and line number) and "long" (full path to source file and line number). Finally, the new --logging.console.style option can be used under the dev build tag to add styling to console logging.

• Add max files and max file size options to the logging config namespace under new --logging.file.max-files and --logging.files.max-file-size options. The old options (--maxlogfiles and --maxlogfilesize) will still work but deprecation notices have been added and they will be removed in a future release. The defaults values for these options have also been increased from max 3 log files to 10 and from max 10 MB to 20 MB.

• Deprecate dust-threshold config option and introduce a new option channel-max-fee-exposure which is unambiguous in its description. The underlying functionality between those two options remain the same.

Breaking Changes

Performance Improvements

• Log rotation can now use ZSTD

Technical and Architectural Updates

BOLT Spec Updates

• Add new lnwire messages for the Gossip 1.75 protocol.

Testing

Database

• Migrate the mission control store to use a more minimal encoding for payment attempt routes as well as use pure TLV encoding.

• Migrate the mission control store so that results are namespaced. All existing results are written to the "default" namespace.

Code Health

• A code refactor that moves all the graph related DB code out of the channeldb package and into the graph/db package.

Tooling and Documentation

• Improved lncli create command help text by replacing the word argument with input in the command description, clarifying that the command requires interactive inputs rather than arguments.

• Fixed a few misspellings of "broadcast" in the code base, specifically the lncli peers updatenodeannouncement command documentation.

Contributors (Alphabetical Order)

• Abdullahi Yunus
• Animesh Bilthare
• Boris Nagaev
• Carla Kirk-Cohen
• CharlieZKSmith
• Elle Mouton
• George Tsagkarelis
• hieblmi
• Keagan McClelland
• Oliver Gugger
• Pins
• Viktor Tigerström
• Yong Yu
• Ziggie