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vendor/symfony/var-dumper/Server/Connection.php

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+<?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;
+
+    /**
+     * @var resource|null
+     */
+    private $socket;
+
+    /**
+     * @param string                     $host             The server host
+     * @param ContextProviderInterface[] $contextProviders Context providers indexed by context name
+     */
+    public function __construct(string $host, array $contextProviders = [])
+    {
+        if (!str_contains($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(int $t, string $m)
+    {
+        // no-op
+    }
+
+    private function createSocket()
+    {
+        set_error_handler([self::class, 'nullErrorHandler']);
+        try {
+            return stream_socket_client($this->host, $errno, $errstr, 3);
+        } finally {
+            restore_error_handler();
+        }
+    }
+}