proxy.js

// place into the express github root folder....

require.paths.unshift('lib')
require('express')
require('express/plugins')
require('express/http')

configure(function(){
  var fiveMinutes = 300000,
      oneMinute = 60000
  use(MethodOverride)
  use(ContentLength)
  use(CommonLogger)
  use(Cookie)
  use(Cache, { lifetime: fiveMinutes, reapInterval: oneMinute })
  use(Session, { lifetime: fiveMinutes, reapInterval: oneMinute })
  set('root', __dirname)
})

var http = require('express/http')
var qs = require('querystring')

function fixupCookies(request_headers, headers) {
    if (!headers['set-cookie']) return;

    var segments = headers['set-cookie'].split(/ *, */);
    headers['set-cookie'] = segments.reduce(function(cookies, segment) {
        if (segment.match(/^[\w\-\$]+=/)) {
            // cookie segment
            cookies.push(segment);
        } else {
            // append (e.g. expires=Wed, xxxx)
            cookies[cookies.length-1] += ', '+segment;
        }
        return cookies;
    }, []);

    if (request_headers['user-agent'].match(/WebKit/)) {
        // Safari 4.x
        headers['set-cookie'] = headers['set-cookie'].join(", ");
    } else {
        // works in FF3.6
        headers['set-cookie'] = headers['set-cookie'].join("\r\nSet-Cookie: ");
    }

    puts ("COOKIES: " + headers['set-cookie']);
}

function handleRequest(method, url, methodName) {
    var request = this;
    if (request.params.get) {
        var gets = qs.stringify(request.params.get);
        if (gets.length) url += '?'+gets;
    }
    puts(methodName + ': ' + url + " headers: " + inspect(request.headers));
    method('http://localhost/trunk/'+url,
           request.body, request.headers, function(e, data, response) {
        if (e) {
            puts("ERR DATA: " + data + "ERR: " + inspect(e));
            request.halt(response.statusCode, inspect(e));
            return;
        }
        // puts("OK DATA: " + response.statusCode + " data: " + data.length + " headers: " + inspect(response.headers));
        request.response.headers = response.headers;
        fixupCookies(request.headers, response.headers);
        response.headers['connection'] = 'close'; // hangups... strange, but possible
        request.halt(response.statusCode, data, "UTF-8");
    });
}

get( '/*', function(url){
    return handleRequest.call(this, http.get,  url, 'GET');
})
post('/*', function(url){
    return handleRequest.call(this, http.post, url, 'POST');
});
put( '/*', function(url){
    return handleRequest.call(this, http.put,  url, 'PUT');
});
del( '/*', function(url){
    return handleRequest.call(this, http.del,  url, 'DELETE');
});

run()