lightning.js

// setup lnd rpc
const config = require('./config');
var fs = require('fs');
var grpc = require('grpc');
var lnrpc = grpc.load('rpc.proto').lnrpc;
process.env.GRPC_SSL_CIPHER_SUITES = 'HIGH+ECDSA';
var lndCert;
if (process.env.TLSCERT) {
  lndCert = Buffer.from(process.env.TLSCERT, 'hex');
} else {
  lndCert = fs.readFileSync('tls.cert');
}
console.log('using tls.cert', lndCert.toString('hex'));
let sslCreds = grpc.credentials.createSsl(lndCert);
let macaroon;
if (process.env.MACAROON) {
  macaroon = process.env.MACAROON;
} else {
  macaroon = fs.readFileSync('admin.macaroon').toString('hex');
}
console.log('using macaroon', macaroon);
let 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);
module.exports = new lnrpc.Lightning(config.lnd.url, creds);