server.js

const app = require('express')();
const http = require('http').createServer(app);
const io = require('socket.io')(http);
const userFunctions = require('./userFunctions')

const hostname = '192.168.56.1';
const port = 3001;

io.on('connection', function (socket) {
    console.log('a user connected');

    socket.on('disconnect', function () {
        console.log('user disconnected');
    });

    // handel Register 
    socket.on('register new user', data => {
        userFunctions.registerNeuUser(data);
    });

    //handel login
    socket.on('need login', data=>{
        userFunctions.needLogin(data, socket);
    });

});

http.listen(port, hostname, () => {
    console.log(`Server running at http://${hostname}:${port}/`);
});