This is bad and should be blocked IMO, at least by default, but can a site do anything other than find out which ports respond to a websocket request? AFAIK the

This is bad and should be blocked IMO, at least by default, but can a site do anything other than find out which ports respond to a websocket request? AFAIK they can't send arbitrary network packets. The websocket will only open if the port they are trying to talk to speaks websocket back. This is mentioned in the article. I'm not saying that's okay. I still don't want them scanning ports on my machine. There might be some services that offer a websocket connection like Plex for example, or the Kinect driver, or Leap Motion. I also don't want them cataloguing ports that are open.