Read config, handle lastEventId in topicmanager

bin/mercureactd

@@ -12,9 +12,20 @@ if (isset($opts['c'])) {
     $config = Configuration::fromFile($opts['c']);
 } else {
     $config = Configuration::createDefault()
+        ->addListener([
+            'address' => '127.0.0.1:8888',
+            'subscribe' => [
+                'anonymous' => true
+            ]
+        ])
         ->setAllowAnonymousSubscribe(true)
         ->setJwtSecret("!ChangeThisMercureHubJWTSecretKey!");
 }
 
+if (count($config->getListeners()) == 0) {
+    fwrite(STDERR, "No listeners available\n");
+    exit(1);
+}
+
 $daemon = new Daemon($config);
 $daemon->start();