Код IT Загрузка примера кода…

Dart / Flutter main.dart 

import 'dart:io';

Future<void> main() async {
  final server = await HttpServer.bind(InternetAddress.loopbackIPv4, 8080);
  print('Слушаем http://127.0.0.1:8080');

  await for (final request in server) {
    if (request.uri.path == '/health') {
      request.response
        ..statusCode = HttpStatus.ok
        ..write('ok');
    } else {
      request.response.statusCode = HttpStatus.notFound;
    }
    await request.response.close();
  }
}

import 'dart:io';

Future<void> main() async {
  final server = await HttpServer.bind(InternetAddress.loopbackIPv4, 8080);
  print('Слушаем http://127.0.0.1:8080');

  await for (final request in server) {
    if (request.uri.path == '/health') {
      request.response
        ..statusCode = HttpStatus.ok
        ..write('ok');
    } else {
      request.response.statusCode = HttpStatus.notFound;
    }
    await request.response.close();
  }
}