var path = require('path');
var grpc = require('@grpc/grpc-js');
var protoLoader = require('@grpc/proto-loader');
var reflection = require('@grpc/reflection');

var PROTO_PATH = [
  path.join(__dirname, '../protos/helloworld.proto'),
  require.resolve('@grpc/reflection/build/proto/grpc/reflection/v1/reflection.proto'),
  require.resolve('@grpc/reflection/build/proto/grpc/reflection/v1alpha/reflection.proto')
];

var server = new grpc.Server();
var packageDefinition = protoLoader.loadSync(PROTO_PATH);
var reflection = new reflection.ReflectionService(packageDefinition);
reflection.addToServer(server);

server.bindAsync('localhost:5000', grpc.ServerCredentials.createInsecure(), () => {
  server.start();
});