不能socket.io客户端连接到服务器摩卡测试

Question

尝试我开始使用下面的错误DEBUG = *

mocha:runner run suite Chat Server Message Events +1ms  
    Message Events 
socket.io-client:url parse http://localhost:5000 +1s 
socket.io-client ignoring socket cache for http://localhost:5000 +0ms 
socket.io-client:manager readyState closed +1ms 
socket.io-client:manager opening http://localhost:5000 +2ms 
engine.io-client:socket creating transport "websocket" +1ms 
engine.io-client:socket setting transport websocket +7ms 
socket.io-client:manager connect attempt will timeout after 20000 +1ms 
socket.io-client:manager readyState opening +1ms 

engine.io-client:socket socket error 
{"description": 
    {"code":"ENOENT", 
    "errno":"ENOENT", 
    "syscall":"connect", 
    "target":{"domain":null, 
      "_events":{}, 
      "_maxListeners":10, 
      "_socket":null, 
      "_ultron":null, 
      "_closeReceived":false, 
      "bytesReceived":0, 
      "readyState":0, 
      "supports":{"binary":true}, 
      "extensions":{}, 
      "_isServer":false, 
      "url":"ws://localhost:5000/socket.io/?EIO=3&transport=websocket", 
      "protocolVersion":13, 
      "binaryType":"buffer"}}} +2ms 

这种情况不会发生socket.io，客户端连接到节点服务器，当我在浏览器上使用socket.io-client，使用相同的套接字配置。

下面是测试代码：

var server = require('myServer'); 
var io = require('socket.io-client'); 

var url = 'http://localhost:5000'; 
var options = { 
    transports: ['websocket'], 
    'force new connection': true 
}; 

var sender; 

describe("Server Test", function() { 
    it('Should login user', function (done) { 
    sender = io(url, options); 
    }); 
}); 

这里是服务器代码：

var express = require('express'); 
var app = express(); 
var server = require('http').Server(app); 
var io = require('socket.io')(server); 

io.on('connection', function (socket) { 
    console.log("connect"); 
}); 

server.listen(5000); 

服务器工作正常。它显示scoket.io-client从浏览器运行但未进行测试时的日志消息。

有人能给我一个线索为什么会发生这种情况？

Answer 1

由于您正在测试，您可能在nodejs环境中定义了global.window。和this行代码完全不

指望它您应该删除global.window对象或写类似global.WebSocket = require('ws');或删除transports: ['websocket']