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Olaoluwa Osuntokun 5dd7b157a0
lnwallet: fix race condition when forwarding by creating new pubkey
This commit fixes a race condition that would at times occur in the
htlcswitch.TestChannelLinkBidirectionalOneHopPayments test case. A race
condition would occur in the goroutine running ReceiveNewCommitment
compared with the grouting that would obtain the snapshot in order to
make a forwarding decision.

We fix this by creating a new public key for each new commitment
transaction such that we complete avoid the read/write race condition.
2017-06-19 17:43:57 +02:00
brontide multi: run all test instances in parallel 2017-06-17 01:00:07 +02:00
chainntnfs chainntnfs: fix vet error, don't pass lock by value 2017-06-07 17:07:33 -07:00
channeldb multi: run all test instances in parallel 2017-06-17 01:00:07 +02:00
cmd/lncli rpc: add signature to VerifyMessage response 2017-05-12 14:21:19 -07:00
contrib contrib: add basic bash completion for lncli 2017-01-29 18:12:53 -08:00
discovery multi: run all test instances in parallel 2017-06-17 01:00:07 +02:00
docker docker: update docker instructions to be aware of multi-chain config 2017-05-11 14:42:27 -07:00
docs docs: correct mistake in protoc version used 2017-06-07 16:52:58 -07:00
htlcswitch htlcswitch: log regular channel ID when registering channels 2017-06-19 16:39:45 +02:00
lnrpc rpcserver: add additional 'error' field in payment response 2017-05-31 11:06:08 -07:00
lnwallet lnwallet: fix race condition when forwarding by creating new pubkey 2017-06-19 17:43:57 +02:00
lnwire multi: run all test instances in parallel 2017-06-17 01:00:07 +02:00
routing multi: run all test instances in parallel 2017-06-17 01:00:07 +02:00
shachain multi: run all test instances in parallel 2017-06-17 01:00:07 +02:00
zpay32 multi: run all test instances in parallel 2017-06-17 01:00:07 +02:00
.gitignore git: add .DS_Store to .gitignore, remove obsolete entries 2017-05-04 17:39:15 -07:00
.travis.yml build: update travis to build against go 1.7.5 and go 1.8.3 2017-06-10 18:10:14 -07:00
breacharbiter.go htlcswicth: start use htlcswitch and channel link inside lnd 2017-05-31 11:06:08 -07:00
chainregistry.go chains: add default routing policy for current supported blockchains 2017-06-17 00:12:43 +02:00
config.go config: don't log to stderr if lnd.conf isn't found 2017-06-19 16:44:30 +02:00
doc.go add some daemon related skeleton files 2015-12-26 00:09:17 -06:00
features.go features: add temp feature bit for recent onion payload changes 2017-06-17 01:04:27 +02:00
fundingmanager.go test: ensure blocks are synchronized before opening channels, allow more time for sync payments 2017-06-19 15:53:52 +02:00
glide.lock build: re-generate hash for glide file 2017-06-19 14:42:57 +02:00
glide.yaml build: update glide to point to the latest version of lighting-onion 2017-06-10 18:15:31 -07:00
gotest.sh test: increase history size of race condition detector 2017-06-19 17:16:07 +02:00
invoiceregistry.go multi: replace usage of fastsha256 with crypto/sha256 2017-03-15 18:56:41 -07:00
LICENSE add copyright, license and discouragement in readme 2016-01-16 00:13:11 -08:00
lnd_test.go test: in async bi-di payment test wait for both sides to see the channel 2017-06-19 16:39:12 +02:00
lnd.go funding: use default routing policy when advertising initial channel routing policy 2017-06-17 00:15:38 +02:00
log.go log: add logger for new light client 2017-06-05 18:43:55 -07:00
networktest_test.go netharness: remove test for the node restart method 2016-11-16 12:46:45 -08:00
networktest.go test: ensure blocks are synchronized before opening channels, allow more time for sync payments 2017-06-19 15:53:52 +02:00
nodesigner.go nodesigner: compact sigs should reference compact pubkeys 2017-05-12 14:21:19 -07:00
params.go config: add litecoin testnet4 parameters to the set of RPC parameters 2017-05-02 19:57:52 -07:00
peer_test.go plasma: rough draft of peer struct 2015-12-20 15:16:38 -06:00
peer.go peer: ensure latest version of htlcswitch.Peer interface is implemented 2017-06-17 00:11:10 +02:00
README.md Fixing badges in README 2017-03-22 11:44:29 -07:00
release.sh build: add release script 2017-01-12 18:30:47 -08:00
rpcserver.go peer: ensure latest version of htlcswitch.Peer interface is implemented 2017-06-17 00:11:10 +02:00
server.go server: update to latest htlcswitch API changes 2017-06-17 00:10:22 +02:00
signal.go lnrpc+rpc+lnd: add new Stop command for gracefully shutting down lnd 2017-05-11 14:55:56 -07:00
utxonursery_test.go test: run utxo nursery tests serially 2017-06-19 14:28:19 +02:00
utxonursery.go rpc: non-existence of a nursery report is no longer an error 2017-05-14 19:20:31 -07:00
version.go lnd: bump version to 0.2.1-alpha 2017-04-07 18:10:45 +02:00

Lightning Network Daemon

Build Status MIT licensed Irc Godoc Coverage Status

The Lightning Network Daemon (lnd) - is a complete implementation of a Lightning Network node and currently deployed on testnet4 - the Bitcoin Test Network. It utilizes an upcoming upgrade to Bitcoin: Segregated Witness (segwit). The project's codebase uses the btcsuite set of Bitcoin libraries, and is currently dependant on btcd. 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

Lightning Network Specification Compliance

lnd doesn't yet fully conform to the Lightning Network specification (BOLT's). BOLT stands for: Basic of Lightning Technologies. 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, lnd the current status of lnd's BOLT compliance is:

  • BOLT 1: Base Protocol
    • lnd currently utilizes a distinct wire format which was created before the emgergence of the current draft of BOLT specifications. We don't have an init message, but we do have analogues to all the other defined message types.
  • BOLT 2: Peer Protocol for Channel Management
    • lnd implements all the functionality defined within the document, however we currently use a different set of wire messages. Additionally,lnd uses a distinct commitment update state-machine and doesn't yet support dynamically updating commitment fees.
  • BOLT 3: Bitcoin Transaction and Script Formats
    • lnd currently uses a commitment design from a prior iteration of the protocol. Revocation secret generation is handled by elkrem and our scripts are slightly different.
  • 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

Installation

In order to build from source, the following build dependencies are required:

  • Go: Installation instructions can be found here.

    It is recommended to add $GOPATH/bin to your PATH at this point. Note: If you are building with Go 1.5, then you'll need to enable the vendor experiment by setting the GO15VENDOREXPERIMENT environment variable to 1. If you're using Go 1.6 or later, then it is safe to skip this step.

  • Glide: This project uses Glide to manage dependencies as well as to provide reproducible builds. To install Glide, execute the following command (assumes you already have Go properly installed):

    $ go get -u github.com/Masterminds/glide
    
  • btcd: This project currently requires btcd with segwit support, which is not yet merged into the master branch. Instead, roasbeef maintains a fork with his segwit implementation applied. To install, please see the installation instructions.

With the preliminary steps completed, to install lnd, lncli, and all related dependencies run the following commands:

$ git clone https://github.com/lightningnetwork/lnd $GOPATH/src/github.com/lightningnetwork/lnd
$ cd $GOPATH/src/github.com/lightningnetwork/lnd
$ glide install
$ go install . ./cmd/...

Updating

To update your version of lnd to the latest version run the following commands:

$ cd $GOPATH/src/github.com/lightningnetwork/lnd
$ git pull && glide install
$ go install . ./cmd/...

Tests

To check that lnd was installed properly run the following command:

go install; go test -v -p 1 $(go list ./... | grep -v  '/vendor/')

IRC

  • irc.freenode.net
  • channel #lnd
  • webchat

Further reading