/// A basic server that prints "Hello, world!" library performance.hello; import 'dart:io'; Future main() { return HttpServer.bind('127.0.0.1', 3000, shared: true).then((server) { print('Listening at http://${server.address.address}:${server.port}'); server.listen((request) { if (request.uri.path == '/') { request.response.write('Hello, world!'); } request.response.close(); }); }); }