在我的应用程序中没有连接socket.io。
我的 app.js(服务器)
app.set('port',3000)
let server = app.listen(app.get('port'))
var io = require('socket.io').listen(server)
global.io = io
index.js(客户端)
const socket = io.connect('https://xxx-my-secret-app.herokuapp.com')
浏览器控制台
POST https://evening-savannah-51961.herokuapp.com/socket.io/?EIO=3&transport=polling&t=Lmx1tkf 404 (Not Found)
响应 html
<!DOCTYPE html><html><head><title></title><link rel="stylesheet" href="/stylesheets/style.css"></head><body><h1>Not Found</h1><h2></h2><pre></pre></body></html>
依赖关系:
"dependencies": {
"body-parser": "~1.17.1",
"connect": "^3.6.0",
"connect-mongo": "^1.3.2",
"cookie": "^0.3.1",
"cookie-parser": "~1.4.3",
"cookie-session": "^2.0.0-beta.1",
"cors": "^2.8.3",
"crypto": "0.0.3",
"debug": "~2.6.3",
"express": "~4.15.2",
"express-formidable": "^1.0.0",
"express-session": "^1.15.2",
"fs": "0.0.1-security",
"gravatar": "^1.6.0",
"gravatary": "^1.0.0",
"https": "^1.0.0",
"mongoose": "^4.9.4",
"morgan": "~1.8.1",
"multer": "^1.3.0",
"nodejs-gravatar": "^1.0.2",
"passport": "^0.3.2",
"passport-local": "^1.0.0",
"passport.socketio": "^3.7.0",
"pnglib": "0.0.1",
"pug": "~2.0.0-beta11",
"randomstring": "^1.1.5",
"serve-favicon": "~2.4.2",
"socket.io": "^1.7.3",
"socketio-jwt": "^4.5.0"
我的应用程序是多用户聊天。对于客户端应用程序，我使用 Angular 4
最佳答案
您需要以不同的方式定义服务器运行的端口。
Heroku 设置您的应用程序运行的端口，然后将其绑定(bind)到您公开的公共(public)端口。要获取 Heroku 设置的端口，您需要读取 process.env.PORT:
let server = app.listen(process.env.PORT)
var io = require('socket.io').listen(server)
global.io = io
关于Node.js + Socket.io 应用程序 - 在heroku 中不起作用，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44162636/