proxy.js

var net = require('net'), sys = require('sys');
net.createServer(function (source_stream) {
  source_stream.addListener('connect', function () {
    var target_stream = new net.Stream();
    target_stream.addListener('connect', function () {
      sys.pump(source_stream, target_stream);
    });
    target_stream.connect(8080);
  });
}).listen(80);