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