gistfile1.js

// Try loading these three urls
// [1] http://localhost:8080/goog
// [2] http://localhost:8080/google
// [3] http://localhost:8080/goog
// 
//  The 1 & 2 will load when the google_emitter is called, 3 doesn't but gets called on 
// the next update

var sys = require("sys"),
    url = require("url"),
    events = require("events");

var emitter = new events.EventEmitter();
function get_body() {
  emitter.emit("body", "Look, here is your data!");
}

setInterval(get_body, 10000);

http.createServer(function(request, response) {
    var uri = url.parse(request.url).pathname;
    if (uri.match(/goog/i)) {      
      var listener = emitter.addListener("body", function(body) {
        response.sendHeader(200, { "Content-Type" : "text/plain" });
        response.write(body);
        response.close();
      });
    }
}).listen(8080);

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