HTTP/1.1 200 OK
Server: Apache
Date: Wed, 09 Dec 2015 03:29:14 GMT
Content-Type: text/xml; charset=utf-8
Connection: keep-alive

<?xml version="1.0" ?>
<methodResponse>
  <params>
    <param>
      <value>
        <string>pingback was successful</string>
      </value>
    </param>
  </params>
</methodResponse>