SocketCluster Client - TypeError: WebSocket不是构造函数

Question

我对javascript很陌生，我正在尝试开发一个react.js应用程序，包括通过Socket集群框架进行通信。客户端不应该在浏览器中运行，而应该在后台的一个单独的javascript文件中运行。

为了实现这一点，我已经为服务器(https://github.com/SocketCluster/socketcluster)和客户机(https://github.com/SocketCluster/socketcluster-client)安装了必要的模块。

我遵循指令，服务器和客户端之间的通信(嵌入到html中的javascript代码，在浏览器中运行)工作正常。但是，当我试图在一个单独的javascript (gbab-client.js)文件中运行“节点gbam-client.js”时，它不会运行，我将非常感谢您的帮助！

gbab-client.js的内容：

const socketClusterClient = require('socketcluster-client/socketcluster');

const options = {
    port: 2222
};

// Initiate the connection to the server
const socket = socketClusterClient.connect(options);
console.log('Connecting...');

socket.on('connect', function () {
    console.log('CONNECTED');
});

// Listen to an event called 'rand' from the server
socket.on('rand', function (num) {
    console.log('RANDOM: ' + num);
});

错误信息：

$ node gbam-client.js


C:\...\node_modules\socketcluster-client\socketcluster.js:1306
    return new WebSocket(uri, null, options);
           ^

TypeError: WebSocket is not a constructor
    at createWebSocket (C:\...\node_modules\socketcluster-client\socketcluster.js:1306:12)
    at new SCTransport (C:\...\node_modules\socketcluster-client\socketcluster.js:1337:18)
    at SCClientSocket.connect.SCClientSocket.open (C:\...\node_modules\socketcluster-client\socketcluster.js:558:22)
    at new SCClientSocket (C:\...\node_modules\socketcluster-client\socketcluster.js:433:10)
    at Object.create (C:\...\node_modules\socketcluster-client\socketcluster.js:198:31)
    at Object.module.exports.create (C:\...\node_modules\socketcluster-client\socketcluster.js: 14:18)
    at Object.<anonymous> (C:\...\gbam-client.js:12:36)
    at Module._compile (internal/modules/cjs/loader.js:778:30)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:789:10)
    at Module.load (internal/modules/cjs/loader.js:653:32)

更新：

我找到了解决办法。要求的目的地是不对的。

这是经过更正的代码(gbam-client.js)：

const socketClusterClient = require('socketcluster-client');

const options = {
    hostname:'localhost',
    port: 2222
};

...

Answer 1

可能您的ws (WebSocket库)版本与套接字群集不兼容，请尝试更新它WS。