4002caec69
In this commit, we add the glue infrastructure to make the sub RPC server system work properly. Our high level goal is the following: using only the lnrpc package (with no visibility into the sub RPC servers), the RPC server is able to find, create, run, and manage the entire set of present and future sub RPC servers. In order to achieve this, we use the reflect package and build tags heavily to permit a loosely coupled configuration parsing system for the sub RPC servers. We start with a new `subRpcServerConfigs` struct which is _always_ present. This struct has its own group, and will house a series of sub-configs, one for each sub RPC server. Each sub-config is actually gated behind a build flag, and can be used to allow users on the command line or in the config to specify arguments related to the sub-server. If the config isn't present, then we don't attempt to parse it at all, if it is, then that means the RPC server has been registered, and we should parse the contents of its config. The `subRpcServerConfigs` struct has two main methods: `PopulateDependancies` and `FetchConfig`. The `PopulateDependancies` is used to dynamically locate and set the config fields for each new sub-server. As the config may not actually have any fields (if the build flag is off), we use the reflect pacakge to determine if things are compiled in or not, then if so, we dynamically set each of the config parameters. The `PopulateDependancies` method implements the `lnrpc.SubServerConfigDispatcher` interface. Our goal is to allow sub servers to look up their actual config in this main config struct. We achieve this by using reflect to look up the target field _as if it were a key in a map_. If the field is found, then we check if it has any actual attributes (it won't if the build flag is off), if it is, then we return it as we expect it to be populated already. |
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| .github | ||
| aezeed | ||
| autopilot | ||
| brontide | ||
| build | ||
| chainntnfs | ||
| channeldb | ||
| cmd/lncli | ||
| contractcourt | ||
| contrib | ||
| discovery | ||
| docker | ||
| docs | ||
| htlcswitch | ||
| keychain | ||
| lncfg | ||
| lnpeer | ||
| lnrpc | ||
| lntest | ||
| lnwallet | ||
| lnwire | ||
| macaroons | ||
| make | ||
| multimutex | ||
| nat | ||
| queue | ||
| routing | ||
| shachain | ||
| signal | ||
| sweep | ||
| ticker | ||
| tor | ||
| walletunlocker | ||
| watchtower | ||
| zpay32 | ||
| .gitignore | ||
| .travis.yml | ||
| breacharbiter_test.go | ||
| breacharbiter.go | ||
| chainparams.go | ||
| chainregistry.go | ||
| chan_series.go | ||
| chancloser.go | ||
| config.go | ||
| doc.go | ||
| Dockerfile | ||
| fundingmanager_test.go | ||
| fundingmanager.go | ||
| go.mod | ||
| go.sum | ||
| invoiceregistry.go | ||
| LICENSE | ||
| lnd_test.go | ||
| lnd.go | ||
| log.go | ||
| logo.png | ||
| Makefile | ||
| mock.go | ||
| nodesigner.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.