Commit Graph

1215 Commits

Author SHA1 Message Date
Olaoluwa Osuntokun
773c831561
lnwallet: replace naive coin selection a size+fee aware version 2016-09-08 12:25:36 -07:00
Olaoluwa Osuntokun
6a1d8d0682
lnwallet: add a BtcWallet implementation of WalletController
This commit adds the first concrete implementation of the
WalletController interface: BtcWallet. This implementation is simply a
series of wrapper functions are the base btcwallet struct.

Additionally, for ease of use both the BlockChain IO and Signer
interface are also implemented by BtcWallet. Finally a new WalletDriver
implementation has been implemented, and will be register by the init()
method within this new package.
2016-09-08 12:25:32 -07:00
Olaoluwa Osuntokun
5449ba2b34
lnwallet: revamp interfaces, add BlockChainIO and Singer
This commit revamps the previous WalletController interface, edging it
closer to a more complete version.

Additionally, this commit also introduces two new interfaces:
BlockchainIO, and Singer along with a new factor driver struct, the
WalletDriver.

This BlockChainIO abstracts read-only access to the blockchain, while
the Singer interface abstracts the signing of inputs from the base
wallet paving the way to hardware wallets, air-gapped signing, etc.

Finally, in order to provide an easy method for selecting a particular
concrete implementation of a WalletController interface, the concept of
registering “WalletDriver”s has been introduced. A wallet driver is
essentially the encapsulation of a factory function capable of create a
new instance of a Wallet Controller.
2016-09-08 12:25:28 -07:00
Olaoluwa Osuntokun
a87ddeabdc
lnwallet: remove interaction with the btcutil.coinset package
This commit removes the wrapper functions used to rely on the coinset
package for coin selection. In a future commit the prior behavior will
be replaced by a custom coin selection implementation which estimates
the size of the funding transaction.
2016-09-08 12:25:24 -07:00
Olaoluwa Osuntokun
8bbd010f74
lnwallet: use the ChainNotifier interface throughout instead of BtcdNotifier
This commit refactors the code within lnwallet interacting with the
ChainNotifier to accept, and call against the implementation rather
than a single concrete implementation.

LightningWallet no longer creates it’s own BtcdNotifier implementation
doing construction, now instead accepting a pre-started `ChainNotifier`
interface.  All imports have been updated to reflect the new naming
scheme.
2016-09-01 19:13:19 -07:00
Olaoluwa Osuntokun
04e7a88a83
lnwallet: fix bug in lockTimeToSequence function
This commit fixes a bug in the lockTimeToSequence function when mapping
a block-based relative lock time to the proper sequence number.

Applying the mask isn’t necessary since the values are expected to be
blow 65K blocks.
2016-08-25 16:25:32 -07:00
Olaoluwa Osuntokun
4104a9bcde
lnwallet: never create zero-value outputs within the commitment transaction 2016-07-27 12:15:50 -07:00
Olaoluwa Osuntokun
c0614c0478
lnwallet: add basic tests for cooperative channel closure
This commit adds a basic test for cooperative channel closure. The
current test ensures correctness of the cooperative closure procedure
initiated by either the channel initiator, or the channel responder.
2016-07-27 11:32:35 -07:00
Olaoluwa Osuntokun
e01dd7f18d
lnwallet: properly make channelState an enum by using iota 2016-07-27 11:29:49 -07:00
Olaoluwa Osuntokun
8a56fbf196
lnwallet: switch name of package logger to avoid module collision 2016-07-27 11:29:07 -07:00
Olaoluwa Osuntokun
c8e58147b6
add glide dependency management for fully reproducible builds
This commit adds glide integration in order to make lnd builds fully
reproducible. Rather than using “go get” users should now manually pull down
the repo, use glide to fetch+install the dependancies, then manually install
all related binaries.

With this change we no longer have to chase dependancies making breaking API
changes under us. We can manually update the managed dependancies once a new
stable release of a defendant package is released.

Additionally, reproducible builds are a strong requirement in order to securely
distribute future major releases of lnd.
2016-07-22 18:53:35 -07:00
Olaoluwa Osuntokun
2bb65a3fb8
lnwallet: add PendingUpdates method to channel state machine
This commit adds a new method, “PendingUpdates” to the channel state
machine which is intended to be a source to give callers a hint as to
when an additional commitment signature should be sent independent of
any request/response book keeping.
2016-07-21 16:52:18 -07:00
Olaoluwa Osuntokun
4063171918
lnwallet: partition state update logs within channel state machine
This commit patrons the state update logs properly within the channel
state machine. This change fixes a number of bugs caused by treating a
central log as two logically distinct logs. Rather than having a bit
indicating if the entry is incoming/outgoing, an entry is added to a
remote or local log depending on which modification method is used.

As a result the code is much easier to follow due to separation of
concerts.

Finally, when attempting to sign a new update with an exhausted
renovation window a distinct error is returned in order to allow higher
level callers to properly back-off and handle the protocol event.
2016-07-21 16:50:38 -07:00
Olaoluwa Osuntokun
b60270f3f7
lnwallet: include htlcs to settle in returned set of htlc's to forward
This commit fixes a slight bug in the channel state machine’s code
executed when processing a revocation messages. With this commit after
processing a revocation, log entries which we should forward to the
downstream or upstream peer for settling/adding HTLC’s are now properly
returned.

The testa have also been updated to ensure to correct htlc’s are
returned “for forwarding”.
2016-07-16 18:12:49 -07:00
Olaoluwa Osuntokun
2c303a1879
lnwallet: AddHTLC now returns log index of created log entry 2016-07-16 18:02:09 -07:00
Olaoluwa Osuntokun
a14246c5bb
lnwallet: use two-value read from conf channel to detect closure 2016-07-14 16:17:10 -07:00
Olaoluwa Osuntokun
7dea354711
lnwallet: properly handle HTLC settles in channel state-machine
We no longer track HTLC’s by their r-hash within the log into the
index, as we may have multiple HTLC’s that can be redeemed by the same
pre-image. Instead we now use a separate index which is keyed by a
log-index.

Additionally, the SettleHTLC method now also returns the index of the
HTLC being settled which allows the remote party to quickly locate the
HTLC within their log.

This commit also introduces a few trace/debug log messages which will
likely be pruned in the near future
2016-07-12 17:35:57 -07:00
Olaoluwa Osuntokun
06f062e678
lnwallet: sync revocation state after receiving a revocation 2016-07-12 17:32:42 -07:00
Olaoluwa Osuntokun
14d669dfd1
lnwallet: decrease initial revocation window to 4 2016-07-12 17:31:01 -07:00
Olaoluwa Osuntokun
94c242073a
lnwallet: finish initial draft of LightningChannel state machine
This commit finishes the initial draft of the commitment state machine.
A full re-write of the prior protocol which combines aspects of the
former ‘lnstate’ package has replaced the prior un-finished
stop-and-wait protocol.

This new protocol is designed to operate in an asynchronous environment
and to facilitate non-blocking batched and pipelined updates to the
committed channel states. The protocol is also de-synchronized meaning
that either side can propose new commitment states independent of the
actions of the other party.

The state machine implemented is very similar to that of c-lightning,
however we allow multiple unrevoked commentates in order to minimize
blocking, and also to reduce latency across several hops in a
bi-directional setting.

The current implementation consists of 3 main data structures: a
commitment chain which consist of unrevoked commitment transactions
(one for each side), and a (mostly) append-only log of HTLC updates
shared between both sides. New commitments proposed index into the log
denoting which updates they include, this allows both parties to
progress chains independent of one another. Revoked commitments, reduce
the length of the chain by one, and free up space within the revocation
window.

At this point only basic tests are in place for the state machine,
however more extensive testing infrastructure along with formal proofs
using PlusCall are planned.
2016-07-05 17:02:03 -07:00
Olaoluwa Osuntokun
8775107454
lnwallet: keep commitments cold at all times, store sig instead
This commit changes prior behavior which stored a “hot” commitment
transaction, meaning one which all the sigScript fully assembled and
able to be broadcast.

Instead, we now store the current signature for our commitment
transaction as a separate field within the database and within memory.
As a result, this eliminates a class of bugs which would erroneously
broadcast a fully loaded commitment transaction, either leading to a
loss of funds, or suspending availability to funds for a period of
time.
2016-07-05 16:55:47 -07:00
Olaoluwa Osuntokun
f03122e697
lnwallet: correct comment in revoke derivation explanation 2016-07-05 16:49:27 -07:00
Olaoluwa Osuntokun
2c187209eb
lnwallet: update internal wallet reservations to use revoke keys
This update the wallet to implement the new single funder workflow
which uses revocation keys rather than revocation hashes for the
commitment transactions.
2016-06-30 12:13:50 -07:00
Olaoluwa Osuntokun
1b490c52ed
lnwallet: createCommitTx now a revocation key 2016-06-30 12:12:19 -07:00
Olaoluwa Osuntokun
d85719b5a7
lnwallet: add elkrem root derivation function
The derivation is current bed on an HKDF invocation using our private
key as the secret, and the node’s channel multi-sig key as the salt.
This scheme allows us to derive the key on the fly given data known to
only us and the remote node.

The current derivation is just a place-holder and will be re-visited at
a later time.
2016-06-30 12:09:42 -07:00
Olaoluwa Osuntokun
78346c81e7
lnwallet: update reservation workflow to revoke keys
With this commit, the reservation workflow for the single funder use
case is now aware of the usage of revocation keys.

The changes are relatively minor:
  * contributions now have RevocationKeys instead of RevocationHashes
  * CompleteReservationSingle now takes the initiators revocation key
2016-06-30 12:02:51 -07:00
Olaoluwa Osuntokun
f3a6f8ffe6
lnd: implement the sendcoins RPC request
This commit implements the “send coins” RPC request which was
introduced at both the lnrpc and command line level in a prior commit.

A small refactoring has taken place w.r.t to sendmany+sendcoins in
order to eliminate some code duplication.
2016-06-29 11:31:34 -07:00
Olaoluwa Osuntokun
e22734f9cf
lnwallet: update HTLC+commitment scripts
This commit updates the previous HTLC and commitment scripts to their
current latest evolution.

The HTLC scripts have been optimized for space savings, the
functionality itself has remained relatively unchanged. A trade off was
made to add additional bytes into the sigScript in order to avoid
extraneous CHECKSIG’s. The rationale is that an extra 1-2 bytes in the
sigScript to guide execution, are worthwhile since they’re in the
witness, and witness data may be pruned in the near future.

The primary change is within the commitment transaction itself. Instead
of using revocation hashes, we now use signature based revocation. This
saves space in the Script, and optimizes away an extra hashing
operation. Elkrem/shachain is still used but, we now use the pre-images
to homomorphically derive a public key which the other party will be
able to sign with, once we disclose the pre-image itself.

Finally, we have switched to using SHA-256 everywhere uniformly for
both revocation hashes, and payment hashes. The rationale is that the
output of ripemd160 is too small for modern security margins, and that
other coins/chains are more likely to have SHA-256 implemented, than
ripemd160.

A set of tests has also been included which contain (mostly) exhaustive
tests of all possible redemption paths for both commitment and HTLC.
2016-06-27 11:35:32 -07:00
Olaoluwa Osuntokun
ac8736ff99
lnwallet: convert commitment no-delay output to p2wsh 2016-06-27 11:21:13 -07:00
Olaoluwa Osuntokun
05fb9b5a6d
lnwallet: payment and revocation hashes are now 32 bytes
This unifies some inconstancies across the code-base with hashes being
32 vs 20 bytes. All hashes, whether payment or revocation are now
uniformly 32 bytes everywhere. As a result, only OP_SHA256 will be used
within commitment and HTLC scripts. The rationale for using sha256
instead of hash160 for the HTLC payment pre-image is that alternative
chains are more likely to have sha256 implemented, rather than
ripemd160.

A forthcoming commit will update the current commitment, and HTLC
scripts.
2016-06-26 23:04:14 -07:00
Olaoluwa Osuntokun
77a006f03b
lnwallet: ChannelPoint() now returns a pointer to outpoint 2016-06-22 22:15:13 -07:00
Olaoluwa Osuntokun
e17bdf08ea
lnwallet: expose db channel deletion+snapshotting 2016-06-22 22:12:37 -07:00
Olaoluwa Osuntokun
31e5466692
lnd: introduce the fundingManager
This commit introduces the fundingManger which is used as a bridge
between the wallet’s internal ‘ChannelReservation’ workflow, and the
wire protocol’s funding messages.

 The funding manger is responsible for progressing the workflow, and
communicating any errors generated during the workflow back to the
source peer.
2016-06-21 13:13:49 -07:00
Olaoluwa Osuntokun
25577b6cd5
lnwallet: add test cases for single funder workflow
This commit adds additional test cases to test both cases (initiator vs
responder) for a single funder channel workflow. Additionally, the
previous dual funder tests have been extended in order to detect proper
funding channel broadcast, and the ChainNotifier’s role in notifying
upstream callers that a funding transaction has been embedded in the
chain at a sufficient depth.

At this point the tests certainly need to be cleaned up. bobNode should
be replaced with a second instance of the wallet modeling a remote
peer.
2016-06-21 13:13:45 -07:00
Olaoluwa Osuntokun
3a14fe8ba5
lnwallet: add support for single funder workflow
This commit modifies the existing workflow to add additional paths to
be used when on the responding side of a single funder workflow.

Additionally, several bugs encountered within the existing dual funder
workflow logic have been fixed, and modified to account for the wallet
being on the igniting side of a single funder workflow.
2016-06-21 13:13:41 -07:00
Olaoluwa Osuntokun
4a6a2d6cd4
lnwallet: correct inputs scripts for nested P2SH spend
The previous logic incorrectly assumed the returned address was already
a p2wkh address. Instead, a p2sh address was returned. So we now
correctly craft both the sigScript and witness stack for a nested p2sh
spend.
2016-06-21 13:13:33 -07:00
Olaoluwa Osuntokun
d52955b146
lnwallet: extract coin selection to distinct method
This is required since for single funder channels, we don’t contribute
any funds so we don’t need to select any change or coins for input into
the funding transaction.
2016-06-21 13:13:29 -07:00
Olaoluwa Osuntokun
e62fc414cb
lnwallet: add single funder workflow to ChannelReservation
This commit adds 3 methods to lnwallet.ChannelReservation intended to
facilitating a single funder channel workflow between two nodes. A
single funder workflow is characterized as the initiator committing all
the funds to a channel, with the responder only providing public keys,
and a revocation hash.

The workflow remains the same for the initiator of the funding
transaction, however for the responder, the following methods are
instead called in order:
  * .ProcessSingleConribution()
  * .CompleteSingleContribution()
  * .FinalizeReservation()

These methods are required for the responder as they are never able to
construct the full funding transaction, and only receive the out point
of the funding transaction once available.
2016-06-21 13:13:26 -07:00
Olaoluwa Osuntokun
45236fa092
lnwallet: implement cooperative closure for LightningChannel
A cooperative closure of a LightningChannel proceeds in two steps.
First, the party who wishes to close the channel sends a signature for
the closing transaction. Next, the responder reconstructs the closing
transaction identically as the initiator did using a canonical
input/output ordering, and the currently settled balance within the
channel. At this point, the responder then broadcasts the closure
transaction. It is the responsibility of the initiator to watch for
this transaction broadcast within the network to clean up any resources
they committed to the active channel.
2016-06-21 13:13:22 -07:00
Olaoluwa Osuntokun
27e6839060
lnwallet: publicly export constructor for LightningChannel 2016-06-21 13:13:18 -07:00
Olaoluwa Osuntokun
507520cda9
lnwallet: move channelState from channeldb to channel.go 2016-06-21 13:13:14 -07:00
Olaoluwa Osuntokun
fcff17c336
multi: change all imports to roasbeef's forks
This commit will allow the general public to build lnd without jumping
through hoops setting up their local git branches nicely with all of
our forks.
2016-05-15 17:22:37 +03:00
Olaoluwa Osuntokun
c6eedafb9a
lnwallet: update reservation workflow to be segwitty
Only nested p2sh or pure witness outputs are used when selecting coins
for inputs to a funding transaction.

The funding transaction output now uses p2wsh rather than regular p2sh.

All tests have been updated accordingly.
2016-05-03 20:06:58 -07:00
Olaoluwa Osuntokun
4b4c0f73b0
lnwallet: add ListUnspentWitness for funding tx coin selection 2016-05-03 20:06:49 -07:00
Olaoluwa Osuntokun
0e74672797
lnwallet: use InputScripts struct within ChannelReservation
This allows the reservation workflow to support pure witness program
outputs, as well as witness programs nested within p2sh.
2016-05-03 20:06:44 -07:00
Olaoluwa Osuntokun
eeb2887fe9
lnwallet: segwit-ify all scripts and signing utils 2016-05-03 20:06:39 -07:00
Olaoluwa Osuntokun
163eb8dcb8
lnwallet: remove FundingType enum
Removing as segwit is now the path forward.
2016-05-03 20:06:30 -07:00
Tadge Dryja
71231c477c make imports lowercase 2016-04-30 20:24:57 -07:00
Olaoluwa Osuntokun
1a96e4f7a6 lnwallet: default to p2wkh address for generated change+delivery addresses 2016-04-24 20:27:56 -07:00
Olaoluwa Osuntokun
0e607c1939 lnwallet: during shutdown properly wait for all goroutines to exit 2016-04-24 12:39:43 -07:00
Olaoluwa Osuntokun
1e35018e89 lnwallet: fix compile errors against btcd's segwit branch 2016-04-12 21:37:08 -07:00
Olaoluwa Osuntokun
f9a8dcbc9c lnwallet: add ListUnspentWitness to WalletController
This method has been added in order to allow lnd to collect eligible
unspent witness programs outputs from the wallet controller for use as
inputs to the funding transaction.

Additionally, the change address functions now also specify whether the
generated change address should be payable to a witness program or not.
2016-04-12 21:36:41 -07:00
Olaoluwa Osuntokun
10d52611cd lnwallet: introduce WalletController interface as a "base wallet"
The WalletController will serve as a layer of separation between “base”
Bitcoin wallet logic, and the higher level Lightning Network logic. As
a result LightningWallet will no behave as an overly wallet, relying on
the lower wallet for basic services such as new address, signing etc.

Within this higher level lies the awareness of channel types, chain
monitoring, HTLCs, and so on.
2016-03-24 16:19:57 -07:00
Olaoluwa Osuntokun
7420503c7a lnwallet: publicly export WaddrmgrEncryptorDecryptor 2016-03-24 14:32:44 -07:00
Olaoluwa Osuntokun
082a8a34e3 lnwallet: update tests and workflow to new OpenChannel struct 2016-03-24 00:01:35 -07:00
Olaoluwa Osuntokun
983294c444 lnwallet: set OpenChannel's internal db pointer 2016-03-24 00:01:17 -07:00
Olaoluwa Osuntokun
4b16763f4d lnwallet: update channel.go to new OpenChannel fields
Simply to compile, channel.go will be replaced with lnstate soon
enough.
2016-03-24 00:00:59 -07:00
Olaoluwa Osuntokun
fe6d71e95e lnwallet: accept channeldb as a param in constructor
lnwallet is no longer responsible for creating/opening channeldb. The
call is now expected to do so.
2016-03-22 18:48:18 -07:00
Olaoluwa Osuntokun
8feb86c4aa multi: create lnd's logging infrastructure 2016-03-22 18:43:10 -07:00
mkl
e07086a523 Integrate basic configuration functionality 2016-03-22 13:28:56 -07:00
Olaoluwa Osuntokun
1944003fde lnwallet: update to use new btcdnotify.NewBtcdNotifier API 2016-02-26 17:38:31 -08:00
Olaoluwa Osuntokun
25c1b7a491 lnwallet: update chainNotifier assignment to new BtcdNotifier constructor 2016-02-26 17:38:31 -08:00
Tadge Dryja
0d3639435f can sync with segnet in hard mode
lots of changes but they seem to work
2016-02-15 22:13:17 -08:00
Olaoluwa Osuntokun
ab16933575 lnwallet: commit tx should have final sequence num 2016-02-05 20:24:32 -08:00
Olaoluwa Osuntokun
81a4887d11 lnwallet: move lockTimeToSequence to script_utils.go 2016-02-05 20:24:17 -08:00
Olaoluwa Osuntokun
fa05ee9a22 lnwallet: move pubKey comparison for funding output spend into spendMultiSig func
* This change makes the spendMultiSig function testable independent of
the reservation workflow.
2016-02-05 12:33:22 -08:00
Olaoluwa Osuntokun
4632894562 lnwallet: move teardown of rpctest before setup to ensure proper cleanup
* Previously, if the call to SetUp(..) returned an error, then the test
harness would fail to stop the running bcd process, and clean up the
test directories. This would cause any subsequent tests to fail. This
commit remedies this scenario.
2016-02-05 12:32:23 -08:00
Olaoluwa Osuntokun
1a8ae48807 lnwallet: point rpctest at my in-progress fork+branch
Fixes compilation issues for those not using my laptop :)
2016-02-03 12:05:53 -08:00
Olaoluwa Osuntokun
daeecd5fc0 lnwallet: nuke most of setup.go, no longer needed w/ wallet.Loader 2016-02-03 12:01:45 -08:00
Olaoluwa Osuntokun
b3cdc6167f lnwallet: switch over to using btcwallet's new Loader type
Allows us to remove a lot of duplicated code pertaining to wallet
setup. We also gain hooks into the wallet to trigger callbacks once the
wallet is created/opened.
2016-02-03 12:01:45 -08:00
Olaoluwa Osuntokun
92c14c99c3 lnwallet: update tests to utilize the in-progress btcsuite/btcd/rpctest package
Instead of creating “fake” utxos for bob, and alice. We now employ a
dedicated mining node to hand out utxos, and generate blocks with hand
picked transactions.
2016-02-03 12:01:44 -08:00
Olaoluwa Osuntokun
7bebefbd8f lnwallet: fix script bug, ensure sigScript is set before verification 2016-02-03 12:01:44 -08:00
Olaoluwa Osuntokun
74ee5334f4 lnwallet: allow configurable net param for wallet create/open 2016-02-03 12:01:44 -08:00
Olaoluwa Osuntokun
98bbd314a7 lnwallet: add active Bitcoin network to config 2016-02-03 12:01:44 -08:00
Olaoluwa Osuntokun
80ce49a883 lnwallet: update btcwallet and chain.Client to new upstream API's
A major change for btcwallet adding a new RPC wallet, refactoring parts
of the wallet, and introducing new functionality has been introduced.
This commit updates lnwallet to the API changes. A future commit will
change lnwallet to use some of the new functionality such as the
notification server, etc.
2016-02-03 12:01:44 -08:00
Olaoluwa Osuntokun
034cbef66d lnwallet: avoid goroutines waiting for channel open indefinitely blocking
Select over the quit channel in order to shutdown goroutines waiting
for funding txn confirmations. Without this we may leak goroutines
which are blocked forever if the process isn’t exiting when the walet
is signaled to shutdown.
2016-02-03 12:01:44 -08:00
Olaoluwa Osuntokun
20d471a766 lnwalelt: add note for balance update ntfs 2016-02-03 12:01:44 -08:00
Olaoluwa Osuntokun
d96cf0ec64 lnwallet: fix receiver htlc script
* Fixes a bug in script_utils.go. CSV instead of CLTV was being used
  within the timeout clause of the receivers HTLC (sender can reclaim
the HTLC).
2016-02-03 12:01:44 -08:00
Olaoluwa Osuntokun
0ce4fb1294 lnwallet: properly set transaction version on commit txs 2016-02-03 12:01:44 -08:00
Tadge Dryja
2815afebb7 update imports to github 2016-01-16 10:45:54 -08:00
Olaoluwa Osuntokun
07b0d5ca3e lnwallet: once the reservation workflow is complete, wait then open the payment channel
* Hooks into the ChainNotifier infrastructure to receive a notification
once the funding transaction gets enough notifications.
* Still need to set up the notification grouting within a
LightningChannel to watch for uncooperative closures, and broadcasts
and revoked channel states.
2016-01-14 23:58:04 -08:00
Olaoluwa Osuntokun
6e0cfaf7ec lnwallet: re-introduce rpc calls during channel reservation workflow
* In preparation for regression testing once nodetest is finished.
* These sections we’re previously uncommented to allow for testing the
wallet without a full-node hooked up.
2016-01-14 23:58:04 -08:00
Olaoluwa Osuntokun
cf65aaa2c9 lnwallet: have wallet return db so it can be closed during shutdown
* Also remove some extra print statements from debugging
* Separate out logic to create wallet from creating an ID
2016-01-14 23:57:54 -08:00
Olaoluwa Osuntokun
f52b8370bc lnwallet: populate the update totem during channel initialization 2016-01-14 23:56:11 -08:00
Olaoluwa Osuntokun
27744a3582 lnwallet: add logic for adding/removing HTLCs
* Updates to the channel are made atomic, and consistent via a proxy
object: “ChannelUpdate” which encapsulates an update transaction. Only
one update transaction may be outstanding at any time.
* Update transactions are initiated via AddHTLC or SettleHTLC.
* Once a transaction has been begun, in order to complete the update
the transaction must first be presented with a signature from the
counter-party for our new version of the commitment tx
(VerifyNewCommitmentSigs), and finally to atomically commit the
transaction, the counterparty’s pre-image to their previous revocation
hash must be validate (Commit).
2016-01-14 23:56:10 -08:00
Olaoluwa Osuntokun
895d70e79f lnwallet: add funding tx p2sh output to lnchannel
* Allows for quick access to the pkScript when signing new commitment
transactions.
2016-01-14 23:56:10 -08:00
Olaoluwa Osuntokun
3fe82f475f lnwallet: correctly adjust cleared funds during AddHTLC
* When adding an HTLC, the update to settled balances are to the side
sending the HTLC.
2016-01-14 23:56:10 -08:00
Olaoluwa Osuntokun
7ec419bde5 lnwallet: add docstrings to script_utils.go 2016-01-14 23:56:10 -08:00
Olaoluwa Osuntokun
f257690788 lnwallet: finish docstrings within coin select code 2016-01-14 23:56:10 -08:00
Olaoluwa Osuntokun
b2cb33c3c2 lnwallet: add documentation to ChannelReservation
* Workflow along with expected call orders have been documented.
* With this, the initial iteration of ChannelReservation is mostly
complete.
* However, there are still some unfinished steps internally within the
wallet related to processing. Such as factoring proper tx fees,
splitting fees, some node interaction etc.
2016-01-14 23:56:10 -08:00
Tadge Dryja
19233dc42d wallet creation works, takes 11 seconds 2016-01-14 23:56:09 -08:00
Tadge Dryja
726ba629f5 ok now it works. Sortof. Still hangs, but hangs later, after writing pkh. 2016-01-14 23:56:09 -08:00
Olaoluwa Osuntokun
1772108544 lnwallet: start of HTLC update logic
* moved sorting of transaction outside of createCommitTx also us to add
HTLC’s before sorting
* On the fence about the proxy object design, will re-visit once we
start to implement the p2p code.
2016-01-14 23:56:09 -08:00
Olaoluwa Osuntokun
5a7b98a9e4 lnwallet: remove CLTV funding tx gen 2016-01-14 23:56:09 -08:00
Olaoluwa Osuntokun
41f4992218 lnwallet: add utils to generate HTLC scripts, split up commit output scripts 2016-01-14 23:56:08 -08:00
Olaoluwa Osuntokun
c41f7d1a7d lnwallet: update to 20 byte revocation hashes 2016-01-14 23:56:08 -08:00
Tadge Dryja
cb32ab1fb9 identify where it freezes. in btcwallet/walletdb/interface.go:271 2016-01-14 23:56:08 -08:00
Tadge Dryja
8504362c5e trying to store id pkh. Doesn't work; wallet creation never completes 2016-01-14 23:56:08 -08:00
Tadge Dryja
e70c6aa367 trying to store private identity key. Doesn't work. 2016-01-14 23:56:08 -08:00
Olaoluwa Osuntokun
a5f0d3e56e lnwallet: require TLS for rpc client 2015-12-29 21:52:20 -06:00
Olaoluwa Osuntokun
ace1aca43c lnwallet: actually connect the rpc client... 2015-12-29 21:08:56 -06:00
Olaoluwa Osuntokun
b3e821c4d2 lnwallet: make KeyGenMtx public, roc server needs to synchronize 2015-12-29 17:09:32 -06:00
Olaoluwa Osuntokun
e07e7cfec9 lnwallet: actually add the config file 2015-12-29 16:04:23 -06:00
Olaoluwa Osuntokun
7640e57cdc lnwallet: add dirty config 2015-12-29 15:59:57 -06:00
Olaoluwa Osuntokun
f1717b9620 lnwallet: embed btwallet within LightningWallet, exposes all methods publicly
* As a result in order to not over-shadow the Start/Stop methods of
btcwallet.Wallet, the Start/Stop methods on LightningWallet have been
renamed to Startup/Shutdown.
2015-12-29 12:45:31 -06:00
Olaoluwa Osuntokun
bc7bdcd22b lnwallet: remove draft wire structs from reservation.go, now lives in lnwire 2015-12-29 00:00:29 -06:00
Olaoluwa Osuntokun
1c4887e746 lnwallet: drop some comments upon script_utils.go 2015-12-29 00:00:29 -06:00
Olaoluwa Osuntokun
7648fee903 lnwallet: note to future roasbeef 2015-12-29 00:00:29 -06:00
Olaoluwa Osuntokun
ef7a2aa553 lnwallet: properly set sequence number in tx for CSV usage 2015-12-29 00:00:29 -06:00
Olaoluwa Osuntokun
774192ecc7 lnwallet: store their commit sig in channel reservation 2015-12-29 00:00:29 -06:00
Olaoluwa Osuntokun
1fd1d87e34 lnwallet/tests: include csv delay in channel reservation init, add doc strings 2015-12-29 00:00:29 -06:00
Olaoluwa Osuntokun
b95eb25595 lnwallet: generate a commitment transaction signature fo bob in wallet_test.go 2015-12-29 00:00:29 -06:00
Olaoluwa Osuntokun
9840585757 lnwallet: actually use 'amount' parameter 2015-12-29 00:00:29 -06:00
Olaoluwa Osuntokun
6eb77b02c2 lnwallet: add comments to wallet.go 2015-12-29 00:00:29 -06:00
Olaoluwa Osuntokun
8ca8eb60fb lnwallet: verify received commitment tx signature is valid 2015-12-29 00:00:29 -06:00
Olaoluwa Osuntokun
695a1e6c45 lnwallet: sign the REDEEMSCRIPT not the p2sh script :) 2015-12-29 00:00:28 -06:00
Olaoluwa Osuntokun
17f37cc254 lnwallet: shutdown rpc connection during stoppage 2015-12-29 00:00:28 -06:00
Olaoluwa Osuntokun
36e7c38812 lnwallet: introduce mutex around coin selection logic 2015-12-29 00:00:28 -06:00
Olaoluwa Osuntokun
7874357384 lnwallet: remove unused struct 2015-12-29 00:00:28 -06:00
Olaoluwa Osuntokun
4fdb2763e6 channeldb: create new channeldb package, update lnwallet to use new API
* Initial draft of brain dump of chandler. Nothing yet set in stone.
* Will most likely move the storage of all structs to a more “column”
oriented approach. Such that, small updates like incrementing the total
satoshi sent don’t result in the entire struct being serialized and
written.
* Some skeleton structs for other possible data we might want to store
are also included.
* Seem valuable to record as much data as possible for record keeping,
visualization, debugging, etc. Will need to set up a time+space+dirty
cache to ensure performance isn’t impacted too much.
2015-12-26 12:35:15 -06:00
Olaoluwa Osuntokun
d7a1c5d337 lnwallet: check for nil buckets during fetch in channeldb 2015-12-26 00:12:31 -06:00
Olaoluwa Osuntokun
3e2a753271 lnwallet: touch config smelly 2015-12-26 00:11:39 -06:00
Olaoluwa Osuntokun
0307f321ad lnwallet: switch LightningChannel struct to use channeldb instead of raw namespace 2015-12-26 00:08:04 -06:00
Olaoluwa Osuntokun
890ceecc1a lnwallet: csv delay is a uint32, fill forgotten fields in channel state 2015-12-26 00:07:30 -06:00
Olaoluwa Osuntokun
b4e33587b1 lnwallet: switch to using channeldb 2015-12-26 00:05:55 -06:00
Olaoluwa Osuntokun
ff92efe7df lnwallet: add node's ID to reservation workflow 2015-12-26 00:05:07 -06:00
Olaoluwa Osuntokun
4bb526854a lnwallet: fix bug don't set TheirCommitSig twice 2015-12-26 00:03:53 -06:00
Olaoluwa Osuntokun
e345f72d69 lnwallet: implement FetchOpenChannel and PutOpenChannel 2015-12-25 18:00:44 -06:00
Olaoluwa Osuntokun
1386d798f5 lnwallet: add tests for serialization of OpenChannelState 2015-12-25 17:00:53 -06:00
Olaoluwa Osuntokun
8e5f028eea lnwallet: create channeldb.go add serialization methods for OpenChannel 2015-12-25 17:00:20 -06:00
Olaoluwa Osuntokun
5840786922 lnwallet: save redeemScript in channel state 2015-12-24 12:42:29 -06:00
Olaoluwa Osuntokun
15f15bb3af rename revocation package to shachain
* Constructors now also more in line with “Effective Go”
2015-12-24 12:42:03 -06:00
Olaoluwa Osuntokun
07646d05db move channel state struct to channeldb.go
* All fields are now publicly exported
2015-12-24 12:41:15 -06:00
Olaoluwa Osuntokun
a4762b818f Merge branch 'master' of li.lan:labs/plasma 2015-12-22 22:39:28 -06:00
Olaoluwa Osuntokun
882e7640d5 lnwallet: update tests to switch to new workflow 2015-12-22 22:32:18 -06:00
Olaoluwa Osuntokun
d24831dc29 lnwallet: update workflow around contributions 2015-12-22 22:31:17 -06:00
Olaoluwa Osuntokun
e762d328fa lnwallet: add ChannelContribution, finalize ChannelReservation API/workflow
* Final workflow has been greatly simplified.
* Interaction is now:
   * init
   * add contribution
   * complete
2015-12-22 22:30:11 -06:00
Olaoluwa Osuntokun
b606804934 lnwallet: add comments to fields of OpenChannelState 2015-12-22 22:27:33 -06:00
Joseph Poon
55c8710cb9 Minor optimization in script opcodes 2015-12-22 16:45:21 -08:00
Olaoluwa Osuntokun
36ec5b4927 lnwallet: update tests to AddContribution API change 2015-12-21 15:55:17 -06:00
Olaoluwa Osuntokun
829f67f33e lnwallet: CompleteReservation now includes sig for commit tx 2015-12-21 15:54:33 -06:00
Olaoluwa Osuntokun
584fc9b620 lnwallet: AddFunds is now AddContribution, accounts for commitment tx
* Contribution from remote host necessary to construct the initial
commitment transaction is now also expected
* All message structs and handlers updated accordingly
* AddContribution now also generates both commitment tnxs, and
generates a signature for their version of the commitment transaction
2015-12-21 15:53:34 -06:00
Olaoluwa Osuntokun
e7e546af9a lnwallet/reservation: fundingLockTime is int64 track their revoke hash 2015-12-21 15:49:57 -06:00
Olaoluwa Osuntokun
d7d569b267 lnwallet: track their current commitment sig in channel state 2015-12-21 15:49:34 -06:00
Olaoluwa Osuntokun
b9a6155021 lnwallet: add field to track current out-of-chain revocation hash 2015-12-20 21:48:56 -06:00
Olaoluwa Osuntokun
8cbbba14a4 lnwallet: assume symmetric initial channel balance 2015-12-20 21:48:45 -06:00
Olaoluwa Osuntokun
6d006ac79c lnwallet: sort inputs/outputs in commit tx 2015-12-20 21:47:57 -06:00
Olaoluwa Osuntokun
d3fe04ab9b lnwallet: add function to locate script index to script_utils.go 2015-12-20 21:47:29 -06:00
Olaoluwa Osuntokun
34e35fe2d5 lnwallet: set commit tnx related info in ChannelReservation
* Future commit will ditch all the thread-safe “getter” like methods.
We’re all adults just make sure to grab the lock.
* All wallet mutation funcs will also document which fields are set
after completion of the request
* Set shaChain, delivery address, commitment key
2015-12-20 17:13:14 -06:00
Olaoluwa Osuntokun
c7d604fd0b lnwallet: use funcs in script_utils.go 2015-12-20 17:11:21 -06:00
Olaoluwa Osuntokun
30523d7db3 lnwallet: import badge's script utils in new file 2015-12-20 17:10:24 -06:00
Olaoluwa Osuntokun
093bbf40ad lnwallet: track some more stats in channel state 2015-12-20 15:17:13 -06:00
Olaoluwa Osuntokun
d2e3b376ea lnwallet: re-name package to lnwallet, though it was? 2015-12-20 00:00:50 -06:00
Olaoluwa Osuntokun
61f5772c40 lnwallet: re-use same wallet instance across tests
* btcwallet still rather slow to create/open, due to scrypt derivation
2x?
2015-12-18 21:48:55 -06:00
Olaoluwa Osuntokun
29d381ad21 lnwallet: adapt tests to field changes 2015-12-18 21:47:47 -06:00
Olaoluwa Osuntokun
420e34cc91 lnwallet: forgot some field name changes 2015-12-18 21:43:37 -06:00
Olaoluwa Osuntokun
a689595054 lnwallet: comment out lnwire-like serialization stuff for now 2015-12-18 21:42:49 -06:00
Olaoluwa Osuntokun
2f7a801dcb lnwallet: embed channel state within ChannelReservation 2015-12-18 21:39:51 -06:00
Olaoluwa Osuntokun
6bb37448f0 lnwallet: add num updates and delivery addresses to channel state
* move utility funds to bottom of file
2015-12-18 21:35:40 -06:00
Olaoluwa Osuntokun
6af4aaf71b lnwallet: separate channel state into new struct
* Will be integrated into ChannelReservation also
* This is the struct that will be persisted to disk
2015-12-18 15:37:13 -06:00
Joseph Poon
39b100b865 Serialize Funding Request and script for CLTV-only 2015-12-18 11:29:35 -08:00
Olaoluwa Osuntokun
feb00e04c4 lnwallet: add fun to create initial Commitment Tx
* Forgot we assume mal fix, need to go back and update the reservation
workflow
2015-12-16 22:58:49 -06:00
Olaoluwa Osuntokun
48c1c39dc9 lnwallet: add skeleton for LightningChannel
* pretty much same as strux/lchannel.go
* Too beefy atm, added note to bring back old CompleteReservation
struct
2015-12-16 22:58:01 -06:00
Olaoluwa Osuntokun
ddb74258ff lnwallet: import tadge's p2shify func 2015-12-16 22:55:52 -06:00
Olaoluwa Osuntokun
147748d178 rename wallet to lnwallet 2015-12-16 14:51:59 -06:00