我尝试使用 socket.io
在我的 node
应用程序中实现 cluster
。如果我不使用 cluster
一切正常。但是当我使用 cluster
时,它会在客户端浏览器中发生以下错误。
WebSocket connection to 'ws://localhost:8000/socket.io/?EIO=3&transport=websocket&sid=Ff8LkaCbF5g92lKOAAAS' failed: Error during WebSocket
socket.js:2 POST http://localhost:8000/socket.io/?EIO=3&transport=polling&t=MAjySbD&sid=Ff8LkaCbF5g92lKOAAAS 400 (Bad Request)
这里是 server.js
var http = require('http');
var app = require('../app');
cluster = module.exports = require('cluster');
const numCPUs = require('os').cpus().length;
var server = http.createServer(app);
io = module.exports = require('socket.io').listen(server, {
pingTimeout: 7000,
pingInterval: 10000
});
io.set("transports", ["xhr-polling","websocket","polling"]);
if(cluster.isMaster){
for (let i = 0; i < numCPUs; i++) {
cluster.fork();
}
cluster.on('exit', (worker, code, signal) => {
console.log(`worker ${worker.process.pid} died`);
});
} else {
var port = 8000;
var host = '0.0.0.0';
server.listen(port,host,function(){
log('server is running on ' + host +':'+port);
});
}
这里是client.js
var socket = io.connect('http://localhost:8000/dashboard',{transports: ['websocket']});
最佳答案
检查您是否使用 express-status-monitor
作为 express 上的中间件,这会使 WebSocket 的第一次(请求)握手时的 http 调用失败,或者可能是代理(nginx)等其他因素或类似的
看here有关此错误的更多详细信息
关于javascript - webSocket 握手期间出错意外响应代码 : 400,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/49745800/