cheeky_async.js

//sample use:  node nodeproxy.js 127.0.0.1 88 127.0.0.1 80
var net      = require('net'),
    sys      = require('sys'),
    Sequence = require('parallel').Sequence;

var proxyHost       = process.argv[2],
    proxyPort       = parseInt(process.argv[3], 10),
    proxyTargetHost = process.argv[4],
    proxyTargetPort = parseInt(process.argv[5], 10),
    proxyServer;

proxyServer = net.createServer(function (source_stream) {
  var target_stream;
  new Sequence(function (next) {
    source_stream.addListener('connect', next); }, function (next) {
    target_stream = new net.Stream();
    target_stream.addListener('connect', next); }, function (next) {
    sys.pump(source_stream, target_stream);
  }).run();
});

proxyServer.listen(proxyPort, proxyHost);

proxy_server.coffee

# sample use:  node nodeproxy.js 127.0.0.1 88 127.0.0.1 80
net: require 'net'
sys: require 'sys'

[proxyHost, proxyPort, proxyTargetHost, proxyTargetPort]: process.argv.slice 2

proxyServer: net.createServer (source_stream) ->
  source_stream.addListener 'connect', ->
    target_stream: new net.Stream()
    target_stream.addListener 'connect', -> sys.pump source_stream, target_stream
    target_stream.connect parseInt(proxyTargetPort, 10), proxyTargetHost

proxyServer.listen parseInt(proxyPort, 10), proxyHost

proxy_server.js

//sample use:  node nodeproxy.js 127.0.0.1 88 127.0.0.1 80
var net = require('net'),
    sys = require('sys');

var proxyHost       = process.argv[2],
    proxyPort       = parseInt(process.argv[3], 10),
    proxyTargetHost = process.argv[4],
    proxyTargetPort = parseInt(process.argv[5], 10),
    proxyServer;

proxyServer = 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(proxyTargetPort, proxyTargetHost);
  });
});

proxyServer.listen(proxyPort, proxyHost);