title: what are EIO=3&transport=websocket in websocket url
body: <p>wss://www.mysite.ca/socket.io/?EIO=3&amp;transport=websocket</p>
  
  <p>This is how chrome webdevoloper tools shows the request url of a socket io.</p>
  
  <p>I am trying to understand more about EIO=3&amp;transport=websocket .</p>
  
  <p>I have to invoke the url from an API tool </p>