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Olaoluwa Osuntokun c986e52da7
funding+server: ensure we cancel all reservations when a peer disconnects
In this commit, we fix an existing issue that could at times cause an
inconsistent view between the set of total coins, and the set of segwit
coins in the wallet of the node. This could be caused by initiating a
funding flow, but then the funding negotiation breaking down somewhere
along the lines. In this case, us or the other peer will disconnect.
When we initiate funding flows, we lock coins exclusively, to ensure
that concurrent funding flows don’t end up double spending the same
coin. Before this commit, we wouldn’t ever unlock those coins. As a
result, our view of available coins would be skewed.

The walletbalance call would show all the coins, but when adding the
—witness_only flag, some coins would be missing, or gone all together.
This is because the former call actually scans the txstore and manually
tallies the amount of available coins, while the latter looks at the
sent of available outputs, which is filtered based on which coins are
locked.

To remedy this, we now ensure that when a peer disconnects, we wipe all
existing reservations which will return any locked outputs to the set
of available outputs for funding flows.
2017-11-26 14:08:53 -06:00
autopilot autopilot: shuffle set of candidates using Fisher–Yates before selecting 2017-10-30 18:55:55 -07:00
brontide brontide: within tests, listen on localhost rather than all interfaces 2017-11-01 15:30:57 -07:00
chainntnfs chainntnfs: Use the new ConcurrentQueue in btcd notifier. 2017-11-16 15:15:22 -08:00
channeldb channeldb: extend ChannelConfig with new HtlcBasePoint key 2017-11-16 20:00:01 -08:00
cmd/lncli cmd/lncli: add new --target_conf and --sat_per_byte args for relevant commands 2017-11-23 23:10:14 -06:00
contrib contrib: add basic bash completion for lncli 2017-01-29 18:12:53 -08:00
discovery discovery: add additional comments to TestDeDuplicatedAnnouncements 2017-11-15 18:25:33 -08:00
docker docker/lnd: start container w/o prompting user for wallet passphrase 2017-10-30 18:40:51 -07:00
docs docs/go-fuzz: rename wirefuzz.md to README.md 2017-10-05 18:30:26 -07:00
htlcswitch htlcswitch: within link, with each new block, check to see if commit fee should change 2017-11-23 23:10:19 -06:00
lnrpc cmd/lncli: add new --target_conf and --sat_per_byte args for relevant commands 2017-11-23 23:10:14 -06:00
lnwallet lnwallet: add IsInitiator and CommitFeeRate methods to LightningChannel 2017-11-23 23:10:18 -06:00
lnwire lnwire: the FeeSatoshis field in the ClosingSigned message is now btcutil.Amount 2017-11-23 23:10:03 -06:00
macaroons macaroons: rename PermissionsConstraint to AllowConstraint 2017-09-19 16:46:20 -07:00
routing routing/chainview: remove possibility of deadlock in shutdown of blockEventQueue 2017-11-16 16:01:21 -08:00
shachain shachain: Add two missing test cases from the BOLT spec. 2017-10-05 16:54:38 -07:00
walletunlocker walletunlocker: don't utilize the macaroon authentication service 2017-10-19 19:46:48 -07:00
zpay32 rpc: properly interpret and parse cltvDelta from payreqs (if exists) 2017-10-22 18:37:00 -07:00
.gitignore git: add .DS_Store to .gitignore, remove obsolete entries 2017-05-04 17:39:15 -07:00
.travis.yml travis.yml: build btcd version from glide.yaml for use in integration tests 2017-11-20 14:22:15 -08:00
breacharbiter_test.go breacharbiter: update tests to add chainHash to retributionInfo in test data 2017-11-10 19:51:09 -08:00
breacharbiter.go breacharbiter: also cancel the channel's observer in case of close, or hand-off 2017-11-23 23:10:16 -06:00
chainparams.go chainparams: ensure target chain checkpoints are properly set 2017-09-01 03:17:28 -07:00
chainregistry.go chains+server: if not in simnet mode, use BtcdFeeEstimator 2017-11-23 23:10:12 -06:00
chancloser.go chancloser: add new state machine to handle details of cooperative channel closure 2017-11-23 23:10:08 -06:00
config.go config+pathfind_test+notifications_test: format and fix newVertex import 2017-11-15 16:50:19 -08:00
doc.go add some daemon related skeleton files 2015-12-26 00:09:17 -06:00
fundingmanager_test.go funding: poll or database state instead of using timeouts in tests 2017-10-25 13:17:22 -07:00
fundingmanager.go funding+server: ensure we cancel all reservations when a peer disconnects 2017-11-26 14:08:53 -06:00
glide.lock build: update to latest btcd 2017-11-23 23:32:50 -06:00
glide.yaml build: update to latest btcd 2017-11-23 23:32:50 -06:00
gotest.sh build: move check of the ports to integration tests 2017-11-09 16:38:58 -08:00
invoiceregistry.go htlcswitch: face race condition in unit tests by returning invoice 2017-11-11 16:09:29 -08:00
LICENSE add copyright, license and discouragement in readme 2016-01-16 00:13:11 -08:00
lnd_test.go lnd_test: extends force closure test to test for outgoing htlc incubation 2017-11-16 16:16:00 -08:00
lnd.go lnd: revert back to prior default wallet public passphrase 2017-10-19 19:53:28 -07:00
log.go log: add logger for the autopilot package 2017-08-10 21:39:47 -07:00
logo.png README: add logo to top portion of page 2017-09-29 14:06:31 -07:00
mock.go funding+utxonursery+breacharbiter: use new FeeEstimator API 2017-11-23 23:10:13 -06:00
networktest_test.go netharness: remove test for the node restart method 2016-11-16 12:46:45 -08:00
networktest.go networktest: wait for channel to become active before attempting close 2017-11-20 14:21:57 -08:00
nodesigner.go nodeSigner: add method for signing already hashed data 2017-09-27 12:25:45 +02:00
nursery_store_test.go nursery_store_test: adds basic tests for state changes 2017-11-16 16:16:04 -08:00
nursery_store.go nursery_store: tracks last graduated and adds HeightsBelowOrEqual 2017-11-16 16:16:04 -08:00
peer_test.go peer: update cooperative closure unit tests to latest negotiation policy 2017-11-23 23:10:15 -06:00
peer.go peer: set FeeEstimator in ChannelLinkConfig when creating link 2017-11-23 23:10:21 -06:00
pilot.go funding+utxonursery+breacharbiter: use new FeeEstimator API 2017-11-23 23:10:13 -06:00
README.md README: add checkbox to BOLT #2 compatibility 2017-11-10 19:51:15 -08:00
release.sh build: add release script 2017-01-12 18:30:47 -08:00
rpcserver.go chains+server: if not in simnet mode, use BtcdFeeEstimator 2017-11-23 23:10:12 -06:00
sample-lnd.conf lnd: add sample config file 2017-11-11 18:58:06 -08:00
server.go funding+server: ensure we cancel all reservations when a peer disconnects 2017-11-26 14:08:53 -06:00
signal.go lnrpc+rpc+lnd: add new Stop command for gracefully shutting down lnd 2017-05-11 14:55:56 -07:00
test_utils.go peer: update cooperative closure unit tests to latest negotiation policy 2017-11-23 23:10:15 -06:00
utxonursery_test.go utxonursery_test: extends test vectors for nursery store 2017-11-15 18:49:13 -08:00
utxonursery.go funding+utxonursery+breacharbiter: use new FeeEstimator API 2017-11-23 23:10:13 -06:00
version.go lnd+cmd/lncli: bump to version 0.3 2017-08-23 11:57:01 -07:00

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 testnet3 - the Bitcoin Test Network. lnd has several pluggable back-end chain services including btcd (a full-node) 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 doesn't yet fully conform to the Lightning Network specification (BOLTs). 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
  • 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.

IRC

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

Further reading