Commit Graph

347 Commits

Author SHA1 Message Date
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
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
eeb2887fe9
lnwallet: segwit-ify all scripts and signing utils 2016-05-03 20:06:39 -07:00
Olaoluwa Osuntokun
1e35018e89 lnwallet: fix compile errors against btcd's segwit branch 2016-04-12 21:37:08 -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
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
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
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
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
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
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
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
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
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
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
c7d604fd0b lnwallet: use funcs in script_utils.go 2015-12-20 17:11:21 -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
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