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Good evening. I have a question maybe a little bit simple but that is keeping me up at night and I think I’m doing it the wrong way. However, if someone can correct me and explain why I made a mistake I will be grateful.
I have a file (module) of my socket io which receives some data via parameter. However, if I give a console in these parameters out of do io.on('Connection'.. returns to me everything according to what I sent... If I try to return inside io.on('Connection returns me null or Undefined.. Pq? I don’t understand.
Below is an excerpt of the code
module.exports = (io, path, method, status) => {
console.log(path, method, status) // AQUI FUNCIONA O QUE RECEBI NESTE MODULO
let users_online = 0
io.on('connection', (socket) => {
console.log(path, method, status) // AQUI DENTRO JA ME RETORNA UNDEFINED
users_online++
io.emit('users_online', users_online)
socket.on('disconnect', () => {
users_online--
io.emit('users_online', users_online)
})
})
}
What would be the solution? :(
It makes no sense for the inner console to be helpless. You can create an example of the problem here or at https://codesandbox.io?
– Sergio
So, Sergio, basically I have the app.js at the root with the following codigo

app.use((req, res, next) => {
 let route = req.url
 let method = req.method
 res.on('finish', () => {
 ws(io, route, method, res.statusCode)
 })
 next()
})
and that middleware q fires into the socket code that is in config/Ws.js :(– Rafael Pelizza
anyway: https://github.com/rpelizza/socket-middleware
– Rafael Pelizza