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'); var server = new grpc.Server(); var packageDefinition = protoLoader.loadSync(PROTO_PATH); var proto = grpc.loadPackageDefinition(packageDefinition); var reflection = new reflection.ReflectionService(packageDefinition); reflection.addToServer(server); server.addService(proto.helloworld.Greeter.service, { sayHello: (call, callback) => { callback(null, { message: 'Hello' }) } }); server.bindAsync('localhost:5000', grpc.ServerCredentials.createInsecure(), () => { server.start(); });