lnd.xprv/lnrpc/README.md

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lnrpc
=====
[![Build Status](http://img.shields.io/travis/lightningnetwork/lnd.svg)](https://travis-ci.org/lightningnetwork/lnd)
[![MIT licensed](https://img.shields.io/badge/license-MIT-blue.svg)](https://github.com/lightningnetwork/lnd/blob/master/LICENSE)
[![GoDoc](https://img.shields.io/badge/godoc-reference-blue.svg)](http://godoc.org/github.com/lightningnetwork/lnd/lnrpc)
This lnrpc package implements both a client and server for `lnd`s RPC system
which is based off of the high-performance cross-platform
[gRPC](http://www.grpc.io/) RPC framework. By default, only the Go
client+server libraries are compiled within the package. In order to compile
the client side libraries for other supported languages, the `protoc` tool will
need to be used to generate the compiled protos for a specific language.
The following languages are supported as clients to `lnrpc`: C++, Go, Node.js,
Java, Ruby, Android Java, PHP, Python, C#, Objective-C.
## Service: Lightning
The list of defined RPCs on the service `Lightning` are the following (with a brief
description):
* WalletBalance
* Returns the wallet's current confirmed balance in BTC.
* ChannelBalance
* Returns the daemons' available aggregate channel balance in BTC.
* GetTransactions
* Returns a list of on-chain transactions that pay to or are spends from
`lnd`.
* SendCoins
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* Sends an amount of satoshis to a specific address.
* ListUnspent
* Lists available utxos within a range of confirmations.
* SubscribeTransactions
* Returns a stream which sends async notifications each time a transaction
is created or one is received that pays to us.
* SendMany
* Allows the caller to create a transaction with an arbitrary fan-out
(many outputs).
* NewAddress
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* Returns a new address, the following address types are supported:
pay-to-witness-key-hash (p2wkh) and nested-pay-to-witness-key-hash
(np2wkh).
* SignMessage
* Signs a message with the node's identity key and returns a
zbase32 encoded signature.
* VerifyMessage
* Verifies a signature signed by another node on a message. The other node
must be an active node in the channel database.
* ConnectPeer
* Connects to a peer identified by a public key and host.
* DisconnectPeer
* Disconnects a peer identified by a public key.
* ListPeers
* Lists all available connected peers.
* GetInfo
* Returns basic data concerning the daemon.
* PendingChannels
* List the number of pending (not fully confirmed) channels.
* ListChannels
* List all active channels the daemon manages.
* OpenChannelSync
* OpenChannelSync is a synchronous version of the OpenChannel RPC call.
* OpenChannel
* Attempts to open a channel to a target peer with a specific amount and
push amount.
* CloseChannel
* Attempts to close a target channel. A channel can either be closed
cooperatively if the channel peer is online, or using a "force" close to
broadcast the latest channel state.
* SendPayment
* Send a payment over Lightning to a target peer.
* SendPaymentSync
* SendPaymentSync is the synchronous non-streaming version of SendPayment.
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* SendToRoute
* Send a payment over Lightning to a target peer through a route explicitly
defined by the user.
* SendToRouteSync
* SendToRouteSync is the synchronous non-streaming version of SendToRoute.
* AddInvoice
* Adds an invoice to the daemon. Invoices are automatically settled once
seen as an incoming HTLC.
* ListInvoices
* Lists all stored invoices.
* LookupInvoice
* Attempts to look up an invoice by payment hash (r-hash).
* SubscribeInvoices
* Creates a uni-directional stream which receives async notifications as
the daemon settles invoices
* DecodePayReq
* Decode a payment request, returning a full description of the conditions
encoded within the payment request.
* ListPayments
* List all outgoing Lightning payments the daemon has made.
* DeleteAllPayments
* Deletes all outgoing payments from DB.
* DescribeGraph
* Returns a description of the known channel graph from the PoV of the
node.
* GetChanInfo
* Returns information for a specific channel identified by channel ID.
* GetNodeInfo
* Returns information for a particular node identified by its identity
public key.
* QueryRoutes
* Queries for a possible route to a target peer which can carry a certain
amount of payment.
* GetNetworkInfo
* Returns some network level statistics.
* StopDaemon
* Sends a shutdown request to the interrupt handler, triggering a graceful
shutdown of the daemon.
* SubscribeChannelGraph
* Creates a stream which receives async notifications upon any changes to the
channel graph topology from the point of view of the responding node.
* DebugLevel
* Set logging verbosity of lnd programmatically
* FeeReport
* Allows the caller to obtain a report detailing the current fee schedule
enforced by the node globally for each channel.
* UpdateChannelPolicy
* Allows the caller to update the fee schedule and channel policies for all channels
globally, or a particular channel
## Service: WalletUnlocker
The list of defined RPCs on the service `WalletUnlocker` are the following (with a brief
description):
* CreateWallet
* Set encryption password for the wallet database.
* UnlockWallet
* Provide a password to unlock the wallet database.
## Installation and Updating
```bash
$ go get -u github.com/lightningnetwork/lnd/lnrpc
```
## Generate protobuf definitions
1. Download [v.3.4.0](https://github.com/google/protobuf/releases/tag/v3.4.0) of
`protoc` for your operating system and add it to your `PATH`.
For example, if using macOS:
```bash
$ curl -LO https://github.com/google/protobuf/releases/download/v3.4.0/protoc-3.4.0-osx-x86_64.zip
$ unzip protoc-3.4.0-osx-x86_64.zip -d protoc
$ export PATH=$PWD/protoc/bin:$PATH
```
2. Install `golang/protobuf` at commit `b5d812f8a3706043e23a9cd5babf2e5423744d30` (v1.3.1).
```bash
$ git clone https://github.com/golang/protobuf $GOPATH/src/github.com/golang/protobuf
$ cd $GOPATH/src/github.com/golang/protobuf
$ git reset --hard v1.3.1
$ make
```
3. Install 'genproto' at commit `a8101f21cf983e773d0c1133ebc5424792003214`.
```bash
$ go get google.golang.org/genproto
$ cd $GOPATH/src/google.golang.org/genproto
$ git reset --hard a8101f21cf983e773d0c1133ebc5424792003214
```
4. Install `grpc-ecosystem/grpc-gateway` at commit `f2862b476edcef83412c7af8687c9cd8e4097c0f`.
```bash
$ git clone https://github.com/grpc-ecosystem/grpc-gateway $GOPATH/src/github.com/grpc-ecosystem/grpc-gateway
$ cd $GOPATH/src/github.com/grpc-ecosystem/grpc-gateway
$ git reset --hard f2862b476edcef83412c7af8687c9cd8e4097c0f
$ go install ./protoc-gen-grpc-gateway ./protoc-gen-swagger
```
5. Run [`gen_protos.sh`](https://github.com/lightningnetwork/lnd/blob/master/lnrpc/gen_protos.sh) to generate new protobuf definitions.