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148 lars 1
<?php
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/*
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 * This file is part of the Symfony package.
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 *
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 * (c) Fabien Potencier <fabien@symfony.com>
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 *
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 * For the full copyright and license information, please view the LICENSE
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 * file that was distributed with this source code.
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 */
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namespace Symfony\Component\VarDumper\Server;
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use Symfony\Component\VarDumper\Cloner\Data;
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use Symfony\Component\VarDumper\Dumper\ContextProvider\ContextProviderInterface;
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/**
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 * Forwards serialized Data clones to a server.
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 *
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 * @author Maxime Steinhausser <maxime.steinhausser@gmail.com>
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 */
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class Connection
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{
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    private string $host;
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    private array $contextProviders;
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    /**
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     * @var resource|null
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     */
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    private $socket;
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    /**
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     * @param string                     $host             The server host
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     * @param ContextProviderInterface[] $contextProviders Context providers indexed by context name
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     */
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    public function __construct(string $host, array $contextProviders = [])
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    {
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        if (!str_contains($host, '://')) {
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            $host = 'tcp://'.$host;
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        }
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        $this->host = $host;
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        $this->contextProviders = $contextProviders;
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    }
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    public function getContextProviders(): array
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    {
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        return $this->contextProviders;
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    }
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    public function write(Data $data): bool
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    {
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        $socketIsFresh = !$this->socket;
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        if (!$this->socket = $this->socket ?: $this->createSocket()) {
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            return false;
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        }
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        $context = ['timestamp' => microtime(true)];
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        foreach ($this->contextProviders as $name => $provider) {
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            $context[$name] = $provider->getContext();
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        }
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        $context = array_filter($context);
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        $encodedPayload = base64_encode(serialize([$data, $context]))."\n";
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        set_error_handler([self::class, 'nullErrorHandler']);
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        try {
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            if (-1 !== stream_socket_sendto($this->socket, $encodedPayload)) {
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                return true;
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            }
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            if (!$socketIsFresh) {
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                stream_socket_shutdown($this->socket, \STREAM_SHUT_RDWR);
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                fclose($this->socket);
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                $this->socket = $this->createSocket();
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            }
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            if (-1 !== stream_socket_sendto($this->socket, $encodedPayload)) {
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                return true;
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            }
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        } finally {
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            restore_error_handler();
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        }
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        return false;
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    }
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    private static function nullErrorHandler(int $t, string $m)
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    {
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        // no-op
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    }
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    private function createSocket()
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    {
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        set_error_handler([self::class, 'nullErrorHandler']);
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        try {
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            return stream_socket_client($this->host, $errno, $errstr, 3);
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        } finally {
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            restore_error_handler();
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        }
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    }
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}