I've been struggling to pass session data from socket.io to express routes using express-socket.io-session. Despite saving the data on the socket's "connection" event, my express routes are not able to access the updated session variables. I have tried various configurations without success.
const path = require('path');
const app = require('express')();
const server = require('http').Server(app);
const io = require('socket.io')(server);
const session = require('express-session')({
secret: 'secret',
resave: true,
saveUninitialized: true
});
var sharedsession = require('express-socket.io-session');
app.use(session);
io.use(sharedsession(session, {
autoSave: true
}))
io.on('connection', (socket) => {
socket.handshake.session.data = ['connection']
console.log(socket.handshake.session);
// First
socket.on('login', data => {
socket.handshake.session.data.push('login');
console.log(socket.handshake.session);
});
})
// Second
app.get('/route', (req, res, next) => {
console.log(req.session.data); // => undefined
})
app.get('/*', (req, res, next) => {
res.sendFile(path.join(__dirname, 'index.html'));
})
server.listen(3000);
After numerous failed attempts to troubleshoot this issue, I have created a minimal example in a repository to showcase the problem: https://github.com/matt-mcdaniel/express-socket-test
Why am I unable to retrieve the saved data from my socket connection in my express routes?