Ping sent successfully CONTENT_TYPE: text/ping HTTP_PING_FROM: http://127.0.0.1:8000/navigation/ping-attribute/anchor-cross-origin.html HTTP_PING_TO: http://127.0.0.1:8000/navigation/resources/check-ping.php HTTP_REFERER: http://127.0.0.1:8000/navigation/ping-attribute/anchor-cross-origin.html REQUEST_METHOD: POST