title: How to get information about the client in node.js
body: <p>in this very simple example:</p>
  
  <pre><code>var sys = require("sys"),
      http = require("http");
  
  http.createServer(function(request, response) {
      response.writeHead(200, {"Content-Type": "text/plain"});
      response.end("Hello World!");
  }).listen(8080);
  
  sys.puts("Server running at http://localhost:8080/");
  </code></pre>
  
  <p>1.) What kind of information can I get from the client? like browser, screen resolution, etc?</p>
  
  <p>2.) How can I send information from the client to server, like parameter?</p>
  
  <p>thanks!</p>