Socket io CORS blocked

Question

i got this warning when using https domain and https socket io.

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at htt         


        

Answer 1

Depending on the circumstances of the project, this may not be what you need. But anyway, I write that it might help someone. I myself wanted to connect to Socket.IO + NodeJS from a script rendered with php.

---

A complete working code can be like this for both ends:

Server:

let pth = require('path');
let exp = require('express');
let app = exp();

//UPDATE: this is seems to be deprecated
//let io = require('socket.io').listen(app.listen(9009));
//New Syntax:
let io = require('socket.io')(app.listen(9009));

app.all('/', function (q, p, next) {
    p.header("Access-Control-Allow-Origin", "*");
    p.header("Access-Control-Allow-Headers", "X-Requested-With");
    next();
});

io.on('connection', (socket) => {
    console.log("connected");
    socket.on('msg', (msg) => {
        console.log(msg);
        io.emit('msg', msg);
    });
});

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client (In my case a php script):

    
    


    

    
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