无法连接到Google云计算引擎上的NodeJS WS Server

我创build了两个构成一个小型多人游戏的JavaScript文件（一个服务器文件和一个客户端文件）。 当我使用node server.js在本地运行服务器文件时，它开始运行。 然后我可以用node client.js运行客户端文件来玩游戏，并且一切正常。 但是，当我尝试在Linux实例（谷歌云上的计算引擎）上实况托pipe游戏时，我无法从客户端连接到它。 我在nodeJS中使用WS库作为websocket。

这里是代码：

server.js

 const WebSocket = require('ws'); const util = require('util'); const wss = new WebSocket.Server({ port: 8889 }); var magicNum = Math.ceil(Math.random() * 5); var champion = "James"; var connections = []; console.log('server listening...'); wss.on('connection', function connection(ws) { connections.push({ ws: ws, name: "", score: 0 }); ws.on('message', function incoming(message, flags) { var currentPlayer; for (var i = 0; i < connections.length; i++) { if (connections[i].ws === ws) { currentPlayer = connections[i]; } } var response; var obj = JSON.parse(message); if (parseInt(obj.guess) === magicNum) { currentPlayer.score++; response = "HOLY COW! YOU GUESSED THE MAGIC NUMBER!!!" + "I now declare you, " + obj.name + ", the new champion! (You have correctly guessed ( " + currentPlayer.score + " ) numbers)"; champion = obj.name; magicNum = Math.ceil(Math.random() * 5); ws.send(JSON.stringify({ response: response, prompt: true })); for (var i = 0; i < connections.length; i++) { if (connections[i].ws !== ws) { response = "Uh oh, too slow! " + obj.name + " correctly guessed the number and is the new champion" + " with " + currentPlayer.score + " correct guesses!"; connections[i].ws.send(JSON.stringify({ response: response, prompt: false })) } } } else { response = "Sorry, that's not the magic number. The champion is still " + champion + "."; ws.send(JSON.stringify({ response: response, prompt: true })); } }); ws.on('close', function (a, b) { for (var i = 0; i < connections.length; i++) { if (connections[i].ws === ws) { connections.pop(i); console.log('removing connection from array'); } } console.log('current connections now: ' + connections.length); }) }); 

client.js

 const WebSocket = require('ws'); var prompt = require('prompt'); //const ws = new WebSocket('ws://localhost:8889'); const ws = new WebSocket('ws://35.185.74.130:8889'); var clientName = ''; function beginPromptForGuess() { var numberSchema = { properties: { number: { description: 'Please guess an integer between 1 and 20', pattern: /^\d+$/, message: 'please enter an integer.', required: true } } }; console.log('prompt is: ' + prompt.stopped + " " + !prompt.started) if (prompt.stopped || !prompt.started) { console.log('starting prompt'); prompt.get(numberSchema, function (err, result) { if (result) { console.log('got number'); ws.send(JSON.stringify({ name: clientName, guess: result.number })); } }) } } ws.on('open', function open() { setTimeout(function () { console.log('Hey, let\'s play a game!'); var nameSchema = { properties: { name: { description: 'First, what is your name?', pattern: /^[a-zA-Z\s\-]+$/, message: 'Name must be only letters, spaces, or dashes', required: true } } }; prompt.get(nameSchema, function (err, result) { if (result) { clientName = result.name; console.log('Hi there, ' + result.name + '!'); console.log('Let\'s play!'); beginPromptForGuess(); } }); }, 500); }); ws.on('message', function incoming(data, flags) { var obj = JSON.parse(data); console.log('Server says: ' + obj.response); if (obj.prompt) { beginPromptForGuess(); } }); 

在创build了linux实例之后，使用SSH“在浏览器窗口中打开”选项在我的实例的内部目录home / mrjim中打开一个shell。 该实例已经有节点，所以我把服务器代码粘贴到一个文件中，运行npm init来创build一个package.json文件，安装了ws库。 然后我跑node server.js ，它似乎工作：

但是，当我尝试从客户端连接到它的shell挂起一段时间，并给这个输出：

 events.js:160 throw er; // Unhandled 'error' event ^ Error: connect ECONNREFUSED 35.185.74.130:80 at Object.exports._errnoException (util.js:1026:11) at exports._exceptionWithHostPort (util.js:1049:20) at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1085:14) 

我做的服务器文件的位置或我如何写ip /端口有问题吗？ 谢谢。

另外，这里是我的Google实例的云configuration：

我也在防火墙规则中打开了端口，但是我仍然无法从客户端连接：

Answer 1

在你的谷歌云设置的屏幕截图看起来像你有外部IP设置为*短命* 。 要从外部客户端（如本地计算机的命令行界面）访问它，您应该将其更改为统计信息IP。 此外，对于多人游戏的后端，我build议使用更安全的SSL端口443而不是8889。

祝你好运！