Socket.io 1.0.5 : How to save session variables?

Question

374.83K viewsSeptember 10, 2022javascript node.js socket.io socket.io-1.0

2

Guillaume Le Miere September 7, 2022 0 Comments

Unfortunately socket.io developer team decided to deprecate functions set() and get(). The problem is that these two functions allowed us to save variable into session.

So my question is : What is the equivalent of the folloing code on socket.io 1.0.5 ?

socket.set('mySessionVar', 'myValue');

socket.get('mySessionVar', function (error, mySessionVar) {
    console.log('I have a super variable save in the session : '+mySessionVar);
    socket.emit('mySessionVar', mySessionVar);
});

Thank you for your help,
Guillaume.

2 Answers

score 6 · Answer 1 · 2022-09-08T12:55:31+00:00

socket.io-handshake is session middleware for socket.io 1.x. It is built on top of express-session and cookie-parser. I know we are talking about socket.io and not express, but it still works with socket.io. This example will make your sessions live on a redis store.

var expressSession = require('express-session');
var connectRedis = require('connect-redis')(expressSession);
var cookieParser = require('cookie-parser');
var config = { session: { secret:'secret', key: 'bus.io', store: new connectRedis() } };
var handshake = require('socket.io-handshake');
var io = require('socket.io')(3000);
io.use(handshake(config.session));
io.on('connection', function (socket) {
  socket.handshake.session.data = "whatever data I want";
  socket.handshake.session.save();
});

score 5 · Answer 2 · 2022-09-08T02:10:42+00:00

Your ‘socket’ is a Javascript object, to which you can add any additional key/values.

socket['mySessionVar'] = 'myValue';
console.log( "I have a super variable save in the session: " + socket['mySessionVar']);