show post form when the node own this room only

src/Controller/ModuleController.php

@@ -129,6 +129,27 @@ class ModuleController extends AbstractController
         Request $request
     ): Response
     {
+        // Connect kevacoin
+        $client = new \Kevachat\Kevacoin\Client(
+            $this->getParameter('app.kevacoin.protocol'),
+            $this->getParameter('app.kevacoin.host'),
+            $this->getParameter('app.kevacoin.port'),
+            $this->getParameter('app.kevacoin.username'),
+            $this->getParameter('app.kevacoin.password')
+        );
+
+        // Check room own
+        $rooms = [];
+        foreach ((array) $client->kevaListNamespaces() as $value)
+        {
+            $rooms[] = $value['namespaceId'];
+        }
+
+        if (!in_array($request->get('namespace'), $rooms))
+        {
+            return new Response();
+        }
+
         // Connect memcached
         $memcached = new \Memcached();
         $memcached->addServer(