异步dns组件 - react/dns

(要求Workerman版本>=3.3.6)

安装：

composer require react/dns

示例：

<?php
require_once __DIR__ . '/vendor/autoload.php';
use WorkermanWorker;
$worker = new Worker('text://0.0.0.0:6161');
$worker->onWorkerStart = function() {
    global   $dns;
    $loop    = Worker::getEventLoop();
    $factory = new ReactDnsResolverFactory();
    $dns     = $factory->create('8.8.8.8', $loop);
};
$worker->onMessage = function($connection, $host) {
    global $dns;
    $dns->resolve($host)->then(function($ip) use($host, $connection) {
        $connection->send("$host: $ip");
    },function($e) use($host, $connection){
        $connection->send("$host: {$e->getMessage()}");
    });
};
Worker::runAll();

文档：

https://github.com/reactphp/dns

注意：

1、所有的异步编码必须在onXXX回调中编写

2、异步客户端需要的$loop变量请使用Worker::getEventLoop();返回值