MAPG-203 add class for multiplayer internal connection (PHP-NodeJS TCP)

src/Multi/MultiConnector.php

@@ -0,0 +1,24 @@
+<?php namespace MapGuesser\Multi;
+
+class MultiConnector
+{
+    public function sendMessage(string $func, array $args = []): void
+    {
+        $message = json_encode([
+            'func' => $func,
+            'args' => $args
+        ]);
+
+        $connection = fsockopen($_ENV['MULTI_INTERNAL_HOST'], $_ENV['MULTI_INTERNAL_PORT']);
+        fwrite($connection, $message);
+        $response = '';
+        while (!feof($connection)) {
+            $response .= fgets($connection);
+        }
+        fclose($connection);
+
+        if ($response !== 'OK') {
+            throw new \Exception('Sending message failed with response: ' . $response);
+        }
+    }
+}