socket.io emit data by android application to node.js server

I have problem with emiting data by android application to node.js server.

node.js server:

var app = require('http').createServer()
var io = require('socket.io')(app);

 app.listen(1000);

 app.on('connection', function (client) { 

   client.name = client.remoteAddress + ':' + client.remotePort;
   console.log(client.name + ' connected!'); 

    client.on('sensorChanged', function (data) {
       console.log(data);
    });
});

and it's Android application

private TextView txtView;
private SocketIO socket;

try {
    socket = new SocketIO("http://localhost:1000");
    socket.connect(this);
} catch (MalformedURLException e1) {
    txtView.setText(e1.getMessage());
}

socket.emit("sensorChanged", "asd");

When I start application, server sees my phone, but when I emit event, server dont respond. Do you have any idea where is the problem?

Copyright Notice：Content Author:「QueUe」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/25587339/socket-io-emit-data-by-android-application-to-node-js-server