gistfile1.txt

var Channel = function(url, connect_callback, disconnect_callback) {
  var url = url;    
  var connect_callback = connect_callback || function() {};
  var disconnect_callback = disconnect_callback || function() {};
  var conn;

  return {
    connect: function() {
      conn = new SockJS(url);
      conn.onopen = function () {
          connect_callback();
        }
      };
      conn.onclose = function () {
          disconnect_callback();
          connect(); // try to reconnect    
      };
    }
  };
};