60999df08f
In this commit, we add a new MultiFile struct. We'll use this struct in store the latest multi-channel backup on disk, swap it out atomically, and finally extract+unpack the contents of the multi-file. The format that's written to disk is the same as a regular Packed multi. The contents of this new file are meant to be used to safely implement an always up to date multi file on disk as a way for users to easily rsync or fsnotiy (when it changes) the backup state of their channels. We implement an atomic update and swap in the UpdateAndSwap. The method uses relies on the underlying file system supporting an atomic rename syscall. We first make a temporary backup file, write the latest contents to that, then swap the temp file with the main file using rename(2). This way, we ensure that we always have a single up to date file, if the protocol aborts before the rename, then we can detect this, remove the temp file, and attempt another swap. |
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| .github | ||
| aezeed | ||
| autopilot | ||
| brontide | ||
| build | ||
| chainntnfs | ||
| chanbackup | ||
| channeldb | ||
| cmd/lncli | ||
| contractcourt | ||
| contrib | ||
| discovery | ||
| docker | ||
| docs | ||
| htlcswitch | ||
| invoices | ||
| keychain | ||
| lncfg | ||
| lnpeer | ||
| lnrpc | ||
| lntest | ||
| lnwallet | ||
| lnwire | ||
| macaroons | ||
| make | ||
| multimutex | ||
| nat | ||
| netann | ||
| queue | ||
| routing | ||
| shachain | ||
| signal | ||
| sweep | ||
| ticker | ||
| tor | ||
| walletunlocker | ||
| watchtower | ||
| zpay32 | ||
| .gitignore | ||
| .travis.yml | ||
| breacharbiter_test.go | ||
| breacharbiter.go | ||
| chainparams.go | ||
| chainregistry.go | ||
| chancloser.go | ||
| config.go | ||
| doc.go | ||
| Dockerfile | ||
| fundingmanager_test.go | ||
| fundingmanager.go | ||
| go.mod | ||
| go.sum | ||
| LICENSE | ||
| lnd_test.go | ||
| lnd.go | ||
| log.go | ||
| logo.png | ||
| Makefile | ||
| mock.go | ||
| nursery_store_test.go | ||
| nursery_store.go | ||
| peer_test.go | ||
| peer.go | ||
| pilot.go | ||
| README.md | ||
| release.sh | ||
| rpcserver.go | ||
| sample-lnd.conf | ||
| server_test.go | ||
| server.go | ||
| subrpcserver_config.go | ||
| test_utils.go | ||
| utxonursery_test.go | ||
| utxonursery.go | ||
| witness_beacon.go | ||
Lightning Network Daemon
The Lightning Network Daemon (lnd) - is a complete implementation of a
Lightning Network node and currently deployed on
testnet3 - the Bitcoin Test Network. lnd has several pluggable back-end
chain services including btcd (a
full-node), bitcoind, and
neutrino (a new experimental light client). The project's codebase uses the
btcsuite set of Bitcoin libraries, and also
exports a large set of isolated re-usable Lightning Network related libraries
within it. In the current state lnd is capable of:
- Creating channels.
- Closing channels.
- Completely managing all channel states (including the exceptional ones!).
- Maintaining a fully authenticated+validated channel graph.
- Performing path finding within the network, passively forwarding incoming payments.
- Sending outgoing onion-encrypted payments through the network.
- Updating advertised fee schedules.
- Automatic channel management (
autopilot).
Lightning Network Specification Compliance
lnd fully conforms to the Lightning Network specification
(BOLTs). BOLT stands for:
Basis of Lightning Technology. The specifications are currently being drafted
by several groups of implementers based around the world including the
developers of lnd. The set of specification documents as well as our
implementation of the specification are still a work-in-progress. With that
said, the current status of lnd's BOLT compliance is:
- BOLT 1: Base Protocol
- BOLT 2: Peer Protocol for Channel Management
- BOLT 3: Bitcoin Transaction and Script Formats
- BOLT 4: Onion Routing Protocol
- BOLT 5: Recommendations for On-chain Transaction Handling
- BOLT 7: P2P Node and Channel Discovery
- BOLT 8: Encrypted and Authenticated Transport
- BOLT 9: Assigned Feature Flags
- BOLT 10: DNS Bootstrap and Assisted Node Location
- BOLT 11: Invoice Protocol for Lightning Payments
Developer Resources
The daemon has been designed to be as developer friendly as possible in order
to facilitate application development on top of lnd. Two primary RPC
interfaces are exported: an HTTP REST API, and a gRPC
service. The exported API's are not yet stable, so be warned: they may change
drastically in the near future.
An automatically generated set of documentation for the RPC APIs can be found at api.lightning.community. A set of developer resources including talks, articles, and example applications can be found at: dev.lightning.community.
Finally, we also have an active
Slack where protocol developers, application developers, testers and users gather to
discuss various aspects of lnd and also Lightning in general.
Installation
In order to build from source, please see the installation instructions.
Docker
To run lnd from Docker, please see the main Docker instructions
IRC
- irc.freenode.net
- channel #lnd
- webchat
Security
The developers of lnd take security very seriously. The disclosure of
security vulnerabilities helps us secure the health of lnd, privacy of our
users, and also the health of the Lightning Network as a whole. If you find
any issues regarding security or privacy, please disclose the information
responsibly by sending an email to security at lightning dot engineering,
preferably encrypted using our designated PGP key
(91FE464CD75101DA6B6BAB60555C6465E5BCB3AF) which can be found
here.