Get the response of a url - vCO workflow

Hello,

Is it possible to get the response from a url though a vCO workflow? I would like to check the keepalive status of a webserver to see if the instance is running or not. All I want is to hit the url, say "https://webserverfqdn:port/keepalive.html/" and parse the response to figure out webserver is running. I don't want to SSH to the webserver to query the status. This is very starlight forward in javascript using xmlHTTPRequest. But, how can I achieve this using vRO?

Thanks