Handle multiple WebSocket connections

Question

I'm making some tests using WebSocket, and I trying to communicate with various "peers" like a P2P network.

I tried this solution below, it works to open all conections and handle all data, but I can't reply to "peer" that I received the initial message.

Anynone have a better idea or other solution? Thanks!

var WebSocket = require('ws');
var peers = ['ws://127.0.0.1:1001', 'ws://127.0.0.1:1002', 'ws://127.0.0.1:1003'];
var ws = [];

for(var i = 0; i<peers.length; i++){
    ws[i] = new WebSocket(peers[i]);
    ws[i].on('open', function open() {
        ws[i].send('something');
    });
    ws[i].on('message', function(data, flags) {
        console.log(data);
    });

    ws[i].on('error', function(err){
        console.log(err);
    });
}

Output:

 "Cannot read property 'send' of undefined"