GetNetworkInfo

GetNetworkInfo returns some basic stats about the known channel graph from the point of view of the node.

Source: lightning.proto

gRPC

rpc GetNetworkInfo (NetworkInfoRequest) returns (NetworkInfo);

REST

HTTP Method	Path
GET	/v1/graph/info

Code Samples

gRPC

Javascript

const fs = require('fs');
const grpc = require('@grpc/grpc-js');
const protoLoader = require('@grpc/proto-loader');

const GRPC_HOST = 'localhost:10009'
const MACAROON_PATH = 'LND_DIR/data/chain/bitcoin/regtest/admin.macaroon'
const TLS_PATH = 'LND_DIR/tls.cert'

const loaderOptions = {
  keepCase: true,
  longs: String,
  enums: String,
  defaults: true,
  oneofs: true,
};
const packageDefinition = protoLoader.loadSync('lightning.proto', loaderOptions);
const lnrpc = grpc.loadPackageDefinition(packageDefinition).lnrpc;
process.env.GRPC_SSL_CIPHER_SUITES = 'HIGH+ECDSA';
const tlsCert = fs.readFileSync(TLS_PATH);
const sslCreds = grpc.credentials.createSsl(tlsCert);
const macaroon = fs.readFileSync(MACAROON_PATH).toString('hex');
const macaroonCreds = grpc.credentials.createFromMetadataGenerator(function(args, callback) {
  let metadata = new grpc.Metadata();
  metadata.add('macaroon', macaroon);
  callback(null, metadata);
});
let creds = grpc.credentials.combineChannelCredentials(sslCreds, macaroonCreds);
let client = new lnrpc.Lightning(GRPC_HOST, creds);
let request = {};
client.getNetworkInfo(request, function(err, response) {
  console.log(response);
});
// Console output:
//  {
//    "graph_diameter": <uint32>,
//    "avg_out_degree": <double>,
//    "max_out_degree": <uint32>,
//    "num_nodes": <uint32>,
//    "num_channels": <uint32>,
//    "total_network_capacity": <int64>,
//    "avg_channel_size": <double>,
//    "min_channel_size": <int64>,
//    "max_channel_size": <int64>,
//    "median_channel_size_sat": <int64>,
//    "num_zombie_chans": <uint64>,
//  }

Python

import codecs, grpc, os
# Generate the following 2 modules by compiling the lightning.proto with the grpcio-tools.
# See https://github.com/lightningnetwork/lnd/blob/master/docs/grpc/python.md for instructions.
import lightning_pb2 as lnrpc, lightning_pb2_grpc as lightningstub

GRPC_HOST = 'localhost:10009'
MACAROON_PATH = 'LND_DIR/data/chain/bitcoin/regtest/admin.macaroon'
TLS_PATH = 'LND_DIR/tls.cert'

# create macaroon credentials
macaroon = codecs.encode(open(MACAROON_PATH, 'rb').read(), 'hex')
def metadata_callback(context, callback):
  callback([('macaroon', macaroon)], None)
auth_creds = grpc.metadata_call_credentials(metadata_callback)
# create SSL credentials
os.environ['GRPC_SSL_CIPHER_SUITES'] = 'HIGH+ECDSA'
cert = open(TLS_PATH, 'rb').read()
ssl_creds = grpc.ssl_channel_credentials(cert)
# combine macaroon and SSL credentials
combined_creds = grpc.composite_channel_credentials(ssl_creds, auth_creds)
# make the request
channel = grpc.secure_channel(GRPC_HOST, combined_creds)
stub = lightningstub.LightningStub(channel)
request = lnrpc.NetworkInfoRequest()
response = stub.GetNetworkInfo(request)
print(response)
# {
#    "graph_diameter": <uint32>,
#    "avg_out_degree": <double>,
#    "max_out_degree": <uint32>,
#    "num_nodes": <uint32>,
#    "num_channels": <uint32>,
#    "total_network_capacity": <int64>,
#    "avg_channel_size": <double>,
#    "min_channel_size": <int64>,
#    "max_channel_size": <int64>,
#    "median_channel_size_sat": <int64>,
#    "num_zombie_chans": <uint64>,
# }

REST

Javascript

const fs = require('fs');
const request = require('request');

const REST_HOST = 'localhost:8080'
const MACAROON_PATH = 'LND_DIR/data/chain/bitcoin/regtest/admin.macaroon'

let options = {
  url: `https://${REST_HOST}/v1/graph/info`,
  // Work-around for self-signed certificates.
  rejectUnauthorized: false,
  json: true,
  headers: {
    'Grpc-Metadata-macaroon': fs.readFileSync(MACAROON_PATH).toString('hex'),
  },
}
request.get(options, function(error, response, body) {
  console.log(body);
});
// Console output:
//  {
//    "graph_diameter": <integer>, // <uint32> 
//    "avg_out_degree": <number>, // <double> 
//    "max_out_degree": <integer>, // <uint32> 
//    "num_nodes": <integer>, // <uint32> 
//    "num_channels": <integer>, // <uint32> 
//    "total_network_capacity": <string>, // <int64> 
//    "avg_channel_size": <number>, // <double> 
//    "min_channel_size": <string>, // <int64> 
//    "max_channel_size": <string>, // <int64> 
//    "median_channel_size_sat": <string>, // <int64> 
//    "num_zombie_chans": <string>, // <uint64> 
//  }

Python

import base64, codecs, json, requests

REST_HOST = 'localhost:8080'
MACAROON_PATH = 'LND_DIR/data/chain/bitcoin/regtest/admin.macaroon'
TLS_PATH = 'LND_DIR/tls.cert'

url = f'https://{REST_HOST}/v1/graph/info'
macaroon = codecs.encode(open(MACAROON_PATH, 'rb').read(), 'hex')
headers = {'Grpc-Metadata-macaroon': macaroon}
r = requests.get(url, headers=headers, verify=TLS_PATH)
print(r.json())
# {
#    "graph_diameter": <uint32>,
#    "avg_out_degree": <double>,
#    "max_out_degree": <uint32>,
#    "num_nodes": <uint32>,
#    "num_channels": <uint32>,
#    "total_network_capacity": <int64>,
#    "avg_channel_size": <double>,
#    "min_channel_size": <int64>,
#    "max_channel_size": <int64>,
#    "median_channel_size_sat": <int64>,
#    "num_zombie_chans": <uint64>,
# }

Shell

$ lncli getnetworkinfo --help

NAME:
   lncli getnetworkinfo - Get statistical information about the current state of the network.

USAGE:
   lncli getnetworkinfo [arguments...]

CATEGORY:
   Channels

DESCRIPTION:
   Returns a set of statistics pertaining to the known channel graph

Messages

lnrpc.NetworkInfoRequest

Source: lightning.proto

note

This request has no parameters.

lnrpc.NetworkInfo

Source: lightning.proto

Field	gRPC Type	REST Type
graph_diameter	uint32	integer
avg_out_degree	double	number
max_out_degree	uint32	integer
num_nodes	uint32	integer
num_channels	uint32	integer
total_network_capacity	int64	string
avg_channel_size	double	number
min_channel_size	int64	string
max_channel_size	int64	string
median_channel_size_sat	int64	string
num_zombie_chans The number of edges marked as zombies.	uint64	string