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Directory >> /var/www/html/back/vendor/react/dns/src/Query/

File / Folder	Size	Action
.	-
CachingExecutor.php	2.672KB	edt ren
CancellationException.php	0.097KB	edt ren
CoopExecutor.php	3.352KB	edt ren
ExecutorInterface.php	1.427KB	edt ren
FallbackExecutor.php	1.679KB	edt ren
HostsFileExecutor.php	2.979KB	edt ren
Query.php	1.953KB	edt ren
RetryExecutor.php	2.763KB	edt ren
SelectiveTransportExecu...	3.048KB	edt ren
TcpTransportExecutor.php	13.635KB	edt ren
TimeoutException.php	0.085KB	edt ren
TimeoutExecutor.php	2.694KB	edt ren
UdpTransportExecutor.php	8.344KB	edt ren

<?php

namespace React\Dns\Query;

use React\Promise\Promise;

final class FallbackExecutor implements ExecutorInterface
{
    private $executor;
    private $fallback;

public function __construct(ExecutorInterface $executor, ExecutorInterface $fallback)
    {
        $this->executor = $executor;
        $this->fallback = $fallback;
    }

public function query(Query $query)
    {
        $cancelled = false;
        $fallback = $this->fallback;
        $promise = $this->executor->query($query);

return new Promise(function ($resolve, $reject) use (&$promise, $fallback, $query, &$cancelled) {
            $promise->then($resolve, function (\Exception $e1) use ($fallback, $query, $resolve, $reject, &$cancelled, &$promise) {
                // reject if primary resolution rejected due to cancellation
                if ($cancelled) {
                    $reject($e1);
                    return;
                }

// start fallback query if primary query rejected
                $promise = $fallback->query($query)->then($resolve, function (\Exception $e2) use ($e1, $reject) {
                    $append = $e2->getMessage();
                    if (($pos = strpos($append, ':')) !== false) {
                        $append = substr($append, $pos + 2);
                    }

// reject with combined error message if both queries fail
                    $reject(new \RuntimeException($e1->getMessage() . '. ' . $append));
                });
            });
        }, function () use (&$promise, &$cancelled) {
            // cancel pending query (primary or fallback)
            $cancelled = true;
            $promise->cancel();
        });
    }
}

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