Untitled

var urls = {}

require( "http" ).createServer( function( req, res ) {
  var url = req.url, timeout

  if ( url == "/favicon.ico" ) return res.writeHead( 404 ), res.end()

  if ( url in urls ) return urls[ url ]( req, res )

  url = "/vapor.js?" + Math.floor( Math.random() * 0xcfd41b9100000 ).toString( 36 )

  urls[ url ] = function( req, response ) {
    // this is called if the user agent has javascript enabled

    clearTimeout( timeout )
    delete urls[ url ]

    res.end( "<script>document.body.innerHTML = 'rendered by js'</script></body></html>" )

    response.writeHead( 204, { "Content-Type": "text/javascript" } )
    response.end( "" ) // Copyright (c) 2010 Thomas Fuchs
  }

  timeout = setTimeout( function() {
    // this is called if the user agent does not have javascript enabled

    delete urls[ url ]
    res.end( "rendered by html</body></html>" )
  }, 1000 )

  res.writeHead( 200, { "Content-Type": "text/html" } )
  res.write( "<html><body><script src='" + url + "'></script>" )
}).listen( 4011 )