无法使用javascript连接网络套接字

我想用一些IP连接到放置amazone实例的Web套接字。我可以将我的Web套接字与ip ip连接起来，并与google rest客户端应用程序进行端口连接，并且效果很好。截屏 ：

但是，如果我想用Java脚本连接它，则无法连接。2-3个月前可以正常工作。我没有改变和事情，但现在无法正常工作。如果我想与Firefox连接，则会产生错误。这是我的代码：-

function init() {
           var host = "ws://XX.XX.XXX.XXX:XXXX"; // SET THIS TO YOUR SERVER


                try {
                  var socket = new WebSocket(host);
                   // alert('WebSocket - status ' + socket.readyState);
                    log('WebSocket - status ' + socket.readyState);

                    socket.onopen = function (msg) {
                        alert('open');
                        alert("Welcome - status " + this.readyState);
                        log("Welcome - status " + this.readyState);

                        if (this.readyState != 1)
                        {
                            reconnect();
                        }
                    };
                    socket.onmessage = function (msg) {
                      //  alert("Received: " + msg.data);
                        log("Received: " + msg.data);

                    };
                    socket.onclose = function (msg) {
                     //   alert("Disconnected - status " + this.readyState);
                        log("Disconnected - status " + this.readyState);
                    };
                } catch (ex) {
                    alert(ex);
                    log(ex);
                }
                $("msg").focus();
            }

这是警报状态0，并且控制台中显示错误：-

Firefox can't establish a connection to the server at ws://XX.XX.XXX.XXX:XXXX.


var socket = new WebSocket(host);