gistfile1.txt

        var xmlhttp;
        if (window.XMLHttpRequest) {
          xmlhttp = new XMLHttpRequest();
        } else {
          xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
        }
        xmlhttp.onreadystatechange = function () {
          if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
            StartWS(xmlhttp.responseText);
          }
        };

        xmlhttp.open("POST", "/ws-auth", true);

        xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
        xmlhttp.send("roomId=17&fkey=" + fkey().fkey);


        function StartWS(response) {
          var WS = new WebSocket(JSON.parse(response).url + '?l=99999999999');
console.log(WS.url);
          WS.onopen = function () {
            console.log('Connection Open!');
          };
          WS.onmessage = function (text) {
            console.log(text);
          };

          WS.onclose = function (text) {
            console.log(text);
          };
          
          WS.onerror = function () {
            console.log('error');
          };
        }