dlink_httpdns 3.0.0

HttpDNS Flutter Plugin

example/lib/main.dart

import 'package:dlink_httpdns/dns_info.dart';
import 'package:dlink_httpdns/dns_info_callback.dart';
import 'package:dlink_httpdns/httpdns_config.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'dart:async';

import 'package:dlink_httpdns/dlink_httpdns.dart';

class MyDNSInfoCallback extends DNSInfoCallback {
  @override
  void onSuccess(DNSInfo info) {
    if (kDebugMode) {
      print("getDNSInfoAsync success info:$info");
    }
  }

  @override
  void onFailed(String message) {
    if (kDebugMode) {
      print("getDNSInfoAsync failed message:$message");
    }
  }
}

void main() {
  runApp(const MyApp());
}

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override
  void initState() {
    super.initState();
    createDNS(['HOST1','HOST2']);
  }

  Future<void> createDNS(List<String> hosts) async {
    DLinkHttpDNS dns = DLinkHttpDNS();
    HttpDNSConfig config = HttpDNSConfig('ACCOUNT_ID', enableLog: kDebugMode);

    /// Please call the create method before using DLinkHttpDNS.
    await dns.create(config);

    /// Set the domain name that needs to be pre-resolved.
    dns.setPreResolveHosts(hosts);

    Future.delayed(const Duration(seconds: 4), () async {
      /// This method only queries the cache and returns the resolution result in the cache, which may return an empty result.
      /// If there is no resolution result in the cache or the resolution result in the cache has expired,
      /// the domain name resolution will be performed in the worker thread.
      /// After the resolution is successful, the cache will be updated for the next call to domain name resolution.
      DNSInfo? info = await dns.getDNSInfoFromCache(hosts[0]);
      if (kDebugMode) {
        print('getDNSInfoFromCache info:$info');
      }
    });

    /// This method first queries the cache.
    /// If there is an available resolution result in the cache, the resolution result is immediately returned through the callback.
    /// If there is no available resolution result in the cache, the domain name resolution will be performed in the worker thread,
    /// and the resolution result will be returned through the callback after the domain name resolution is completed or the timeout period is reached.
    dns.getDNSInfoAsync(hosts[0], callback: MyDNSInfoCallback());

    /// This method first queries the cache.
    /// If there is an available resolution result in the cache, the resolution result is returned immediately.
    /// If there is no available resolution result in the cache, the thread currently calling the resolution will be blocked and the domain name resolution will be performed in the thread.
    /// The resolution result will be returned after the domain name resolution is completed, or an empty result will be returned after the timeout period is reached.
    DNSInfo? info = await dns.getDNSInfoSync(hosts[0]);
    if (kDebugMode) {
      print('getDNSInfoSync info:$info');
    }
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Plugin example app'),
        ),
      ),
    );
  }
}