docs: function changeServer(url)
      {
          scope._redirectURL = url;
          if(scope._conn)
          {
              scope._conn.onopen     = null;
              scope._conn.onerror    = null;
              scope._conn.onclose    = null;
              scope._conn.onmessage  = null;
              scope._conn.close();
          }
          connect();
      }