This commit modifies both the Sphinx packet generation and processing
for recent updates to the API.
With the version 1 Sphinx specification, the payment hash is now
included in the MACs in order to thwart any potential replay attacks.
As a result, any attempts to replay previous HTLC packets MUST re-use
the same payment hash, meaning that the first-hop node can simply
settle the HTLC immediately, thwarting the attacker.
Additionally, within the Sphinx packet, each hop now gets a per-hop
payload which contains the necessary details (CTLV value, fee, etc) for
the node to successfully forward the payment. This per-hop payload is
protected by a packet-wide MAC.
This commit adds a few workarounds in order to concurrently support the
REST proxy as well as the regular gRPC interface. Additionally,
concrete support for the following RPC calls has been added:
GetTransactions, SubscriptTransactions, SubscribeInvoices, and
NewWitnessAddress.
This commit removes the previous HTLC timeout in message in favor of a
HTLC cancel message. Within the protocol, a timeout message would never
be sent backwards along the route as in the case of an HTLC timeout
before/after the grace period, the course of action taken would be to
broadcast the current commitment transaction unilaterally on-chain.
LIGHT-131, LIGHT-140, LIGHT-138
`lncli showroutingtable` may output routing table as image.
Use graphviz for graph rendering.
Add explicit version dependency for tools. Add error checking.
LIGHT-138, LIGHT-141. Due to some issues in sending/receiving parts of lnd,
messages with zero length are not sent. So added some mock content to
NeighborAck. Moved sender/receiver from routing message to wrap message
which contains lnwire routing message.
LIGHT-133, LIGHT-138 Make output of `lncli showrouting table` in
two different formats: table and json.
Instead of sending serialized routing table send list of channels.
This commit integrates BitFury's current routing functionality into lnd. The
primary ochestration point for the routing sub-system in the routingMgr. The
routingMgr manages all persistent and volatile state related to routing within
the network.
Newly opened channels, either when the initiator or responder are inserted into
the routing table once the channel is fully open. Once new links are inserted
the routingMgr can then perform path selection in order to locate an "optimal"
path to a target destination.
With this commit a revocation message now carries 3 items:
1. A pre-image revoking the lowest unrevoked commitment transaction
in the commitment chain.
2. A new key which extends the current revocation window by 1. This
key is to be used for new commitment transactions.
3. A new hash which also extends the current revocation window by 1.
This hash is to be used for new HTLC revocation hashes.
This commit updates the CommitSignature message to match the latest
version of the state-machine protocol. The log index specifies up to
which index in the receiver’s HTLC log the sender’s signature covers.
We now enforce that the site of all revocation pre-images+hashes (used
for HTLC’s) are now 32-bytes.
Additionally, all payment pre-images are now required to be 32-bytes
not he wire. There also exists a Script level enforcement of the
payment pre-image size at a lower level.
This commit serves to unify the sizes of all hashes/pre-images across
the codebase.
This commit updates the messages sent during a single funder workflow
to utilize revocation keys rather than revocation hashes. This now
matches the latest updates to the commitment transaction.
The changes to the workflow are as follows:
* the response message now carries the responder’s revocation key
* the complete message now carries the initiator’s revocation key
Once the initiator receives the response message, it can construct both
versions of the commitment transaction as it now knows the responder’s
commitment key. The initiator then sends their initial revocation key
over to the responder allowing it to construct the commitment
transactions and give the initiator a sig for their version.
This commit modifies most of the wire messages to uniquely identify any
*active* channels by their funding output. This allows the wire
protocol to support funding transactions which open several channels in
parallel.
Any pending channels created by partial completion of the funding
workflow are to be identified by a uint64 initialized by both sides as
follows: the initiator of the connection starts from 0, while the
listening node starts from (1 << 63). These pending channel identifiers
are expected to be monotonically increasing with each new funding
workflow between two nodes. This identifier is volatile w.r.t to each
connection initiation.
This commit adds some cursory documentation along wit minor field
modifications to all messages which deal with adding HTLC’s, or
updating remote commitment transactions.
The messages for dual funding of channel is left purposefully
undocumented as all initial negotiations will be single funder by
default.
A revamp of the testing infrastructure of lnwire will be committed in
the near future.
The SFOP is the final message sent during the single funding channel
negotiation protocol. Once Alice sends the SFOP message to Bob, Bob
will then commit resources to watching and updating the newly created
channel with Alice.
This commit adds some additional documentation in the form of comments
to the start of the revised single funder workflow.
A primary change lies in the introduction of the exchange of Channel
Derivation Points (CDP’s) for both sides. Using CDP’s we can derive
channel authentication proofs which are both unforgettable and binding.
This commit adds the SingleFundingSignComplete message to the single
funder transaction workflow. This marks the second to last message sent
in the workflow. The message transports Bob’s signature for the
commitment transaction, allowing Alice to broadcast the funding
transaction as she can now refund her inputs.
This commit adds the SingleFundingComplete message to the single funder
channel workflow. This is the 3rd message sent in the workflow,
traveling from Alice to Bob once Alice is able to construct the final
commitment transaction.
* Added description in lnwire/README.md for state machine
* Figured out mutex stuff...
* Started the State Machine (using dummy functions for net/db)
* Minor corrections in wire protocol (changed some names/types)
- Renamed StagingID to HTLCKey of type HTLCKey (uint64)
* Structs and wire messages for HTLCs
* Wire protocol for a state machine with no blocking(!!!)
(I will write the state machine)
TL;DR: Can do multiple HTLC modifications in-flight, dead simple wire
protocol. Both sides can update their Commitments unliaterally without
waiting for the other party's signature. Will have basic/preliminary
notes in the README
* Added **swp to .gitignore because of vim annoyances
* FundingSignAccept and FundingSingComplete had *[]btcec.Signature and
instead it's now []*btcec.Signature to match other slice types.
* Refactored lnwire's when doing readElement/writeElement on slices
* Added field
* Renamed FundingAmount and ReserveAmount to specify in FundingRequest
and FundingResponse that it is for RequesterFundingAmount or
ResponderFundingAmount
* Added PaymentAmount field to FundingRequest
* Added MinDepth field to FundingRequest and FundingResponse
* Fixed .Serialize() to show inputs/etc. only if there are fields
available (prevents trying to dereference nil value)
* Add a bunch of Validate() conditions
* MASSIVE REFACTOR of tests (removed tons of redundancy)
Running "go test -v" will show the serialization and deserialization.
Doing the rest of the wire stuff should be *much* faster since I figured
everything out...
