Started Playing with node.js. I have a question

I just created a HTTP server using this code fro the documentation:

var sys = require("sys"),
    http = require("http");

http.createServer(function(request, response) {
    response.writeHead(200, {"Content-Type": "text/plain"});
    response.end("Hello World!");
    sys.puts('Connection');
}).listen(8080);

sys.puts("Server running at http://localhost:8080/");**

My question is, why when I go to localhost:8080 I got "connection" printed twice? is this a bug?

Your browser may be requesting the URL twice, once with a HEAD request and once with a GET request. Try using a simple interface, like telnet:

$ telnet localhost 8080
GET / HTTP/1.0

^]q

Leave a blank line after GET, and press Ctrl+]qEnter to get out.

two requests are sent to the server. The first request is automatically made by the browser, which requests favicon.ico, and of course, the second request is for the URL (localhost:8080).