Socket.IO 1.0 with Unity3d not working

I am searching for a way to create a unity3d game with a node.js server. I am familiar with Socket.io so I wanted to use that.

I got "UnitySocket-IO" but it doesn't work, It says: Error initializing handshake with http://localhost:80/

My code on the client (Unity) is:

#pragma strict
var client:SocketIOClient.Client = new SocketIOClient.Client("http://localhost:80/");

function Start () {
    //client.Opened += SocketOpened;
    client.Message += SocketMessage;
    //client.SocketConnectionClosed += SocketConnectionClosed;
    client.Error +=SocketError;
    client.Connect();
}

function SocketMessage(sender, e) {
    client.Send("Pong");
}

function SocketError(sender, e:SocketIOClient.ErrorEventArgs) {
    Debug.Log(e.Message);
}

The code on the server (Node.JS):

var io = require('socket.io')();
io.listen(80);

io.on("connection", function (socket) {
    "use strict";
    console.log("Connected!");
    setTimeout(function () {
        console.log("Sent ping.");
        socket.emit("Ping!");
    }, 2000);
    io.on("message", function (data) {
        console.log(data);
    });
});

I suspect this is a problem between 1.0 and the unitysocket-io library. Is there any alternative that works in Unityscript?

I tried downgrading to 0.9, but it still doesn't work, and I want to use current versions of things. Thanks!