/**
  * Send XML-RPC message
  *
  * @param   webservices.xmlrpc.XmlRpcMessage message
  * @return  scriptlet.HttpScriptletResponse
  */
 public function send(XmlRpcMessage $message)
 {
     with($r = $this->_conn->create(new HttpRequest()));
     $r->setMethod(HttpConstants::POST);
     $r->setParameters(new RequestData($message->serializeData()));
     $r->setHeader('Content-Type', 'text/xml; charset=' . $message->getEncoding());
     $r->setHeader('User-Agent', 'XP Framework XML-RPC Client (http://xp-framework.net)');
     // Add custom headers
     $r->addHeaders($this->_headers);
     $this->cat && $this->cat->debug('>>>', $r->getRequestString());
     return $this->_conn->send($r);
 }