Browser client working and Node.js client not working. #5043

gabbdev · 2024-06-11T17:20:13Z

gabbdev
Jun 11, 2024

hello. I am creating a simple server with socket.io + express, but when i start the server, only the browser client can connect, while the Node.js client (socket.io-client) cannot. Does anyone know what's happening?

my node.js server code:

const express = require('express')
const app = express()
const server = require('http').createServer(app)
const io = require('socket.io')(server, {
    cors: {
        origin: '*',
    }
})

app.get('/', (req,res)=> {
	res.send('hello world!')
})

io.on('connection', socket => {
    console.log('Client connected!', socket.id)
})

setInterval(()=> {
	io.emit('message', 'Hello! ' + Date.now())
}, 500)

server.listen(80, ()=> {
	console.log('Server online')
})

My browser client code (can connect and work normally):

<!DOCTYPE HTML>
<html>
<head>
    <title>Test</title>
    <script src="https://cdn.socket.io/4.7.2/socket.io.min.js"></script>
    <script>
        const socket = io('https://mywebsite.com/')
        socket.on('connect', () => {
            console.log('connected')
        })
        socket.on('message', (msg) => {
            console.log(msg)
        })
    </script>
</head>
<body>
    <h1>Test</h1>
</body>
</html>

My node.js client code (timeout error, cant connect):

const io = require('socket.io-client')
const socket = io('https://mywebsite.com/')

socket.on('connect', () => {
    console.log('connected')
})

socket.on('message', (msg) => {
    console.log(msg)
})

in case you noticed, I'm starting the server on port 80 but the host switches to 443 automatically with cloudflare proxy, if that was the problem neither of the 2 clients would have worked. Also, the browser client is not on the same URL as the server, so it wouldn't be a CORS problem.

Browser client response:

Node.js client response:

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Browser client working and Node.js client not working. #5043

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Browser client working and Node.js client not working. #5043

gabbdev Jun 11, 2024

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gabbdev
Jun 11, 2024