检测 React PHP 客户端是否无法连接到服务器

Question

如何检测React PHP 客户端无法连接到服务器？我希望我在底部显示的虚构 else() 方法。我是否只需要等待一段合理的时间，如果没有 on data 事件发生，它就没有连接。

<?php

require 'vendor/autoload.php';

$loop = React\EventLoop\Factory::create();

$dnsResolverFactory = new React\Dns\Resolver\Factory();
$dns = $dnsResolverFactory->createCached('8.8.8.8', $loop);
$connector = new React\SocketClient\Connector($loop, $dns);

$connector->create('127.0.0.1', 1337)->then(function (React\Stream\Stream $stream) {
    $buffer = '';
    $stream->on('data', function ($data, $stream) use (&$buffer) {
    });
})
/*
->else(function () {
    //no connection?
});
*/

$loop->run();

Answer 1

<?php

require 'vendor/autoload.php';

$loop = React\EventLoop\Factory::create();

$dnsResolverFactory = new React\Dns\Resolver\Factory();
$dns = $dnsResolverFactory->createCached('8.8.8.8', $loop);
$connector = new React\SocketClient\Connector($loop, $dns);

$gotConnected=false;

$connector->create('127.0.0.1', 1337)->then(function (React\Stream\Stream $stream) use(&$gotConnected) {
    $gotConnected=true;
    $buffer = '';
    $stream->on('data', function ($data, $stream) use (&$buffer) {
    });
});

$loop->run();

echo($gotConnected?'Got connected':'Did not get connected');

Answer 2

看看 ReactPHP 的 PromiseInterface。为 then 使用第二个回调或使用 otherwise，这正是你的人为 else.

$connector->create('127.0.0.1', 1337)->then(function (React\Stream\Stream $stream) {
    $buffer = '';
    $stream->on('data', function ($data, $stream) use (&$buffer) {
        // ...
    });
}, function (Throwable $error) {
    // handle error here
});

检测 React PHP 客户端是否无法连接到服务器

Detecting if React PHP client cannot connect to server

php

sockets

reactphp