How to create a node js server socket to receive data in different ports?

Question

I need a socket server that must receive data from 100 clientes in different ports on the server. I've created an array of server sockets and I don't know if this is correct.

I also identified a slowness to receive the data when I have about 100 clients sending data and for some reason the server stops receiving from 10 clients.

Here is my code for 3 ports as an example.

var net = require('net');
var rl = require('readline');
var fs = require('fs');

var ports = [60001, 60002, 60003];

var server = new Array();

ports.forEach(function(value) {

    server[value] = net.createServer(function (socket) {    // array of socket servers

        socket.on('error', function(err) {
            console.log(err.stack);
            server[value].close();
            server[value].listen(value);    //start listen again
        });

        socket.on('end', function() {
            console.log('client disconnected: ' + value);
            server[value].close();
            server[value].listen(value);    //start listen again
        });

        console.log('client connected: ' + value);

        var intf = rl.createInterface(socket, socket);

        intf.on('line', function (line) {

            fs.exists(__dirname + "\\file" + value.toString() + ".txt", function (exists) {

                if(exists){
                    var stream = fs.createWriteStream(__dirname + "\\file" + value.toString() + ".txt", {'flags': 'a'});
                } else {
                    var stream = fs.createWriteStream(__dirname + "\\file" + value.toString() + ".txt", {'flags': 'w'});
                }

                try {
                    stream.once('open', function(fd) {
                        console.log(value.toString() + " - " + line);
                        stream.write(line + "\r\n");
                        stream.end();
                    });     
                } catch (x) {
                    console.log(x.stack);
                }

            });

        }); 

    }); 

    server[value].listen(value);    // listen many ports

});