--- out

"POST"
{"href":"/","pathname":"/"}
{"host":"ledger.robotarmyma.de:7001","user-agent":"Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3","accept":"text/javascript, application/javascript, */*","accept-language":"en-us,en;q=0.5","accept-encoding":"gzip,deflate","accept-charset":"ISO-8859-1,utf-8;q=0.7,*;q=0.7","keep-alive":"115","connection":"keep-alive","content-type":"application/x-www-form-urlencoded; charset=UTF-8","referer":"http://ledger.robotarmyma.de:3000/public/test/index.html","content-length":"91","origin":"http://ledger.robotarmyma.de:3000","pragma":"no-cache","cache-control":"no-cache"}
";jsonp1275368382519({\"pony\":\"cake\",\"name\":\"biscuit\"});"

Firebug HEADERS

Response Headersview source
Content-Length	54
Content-Type	application/json;charset=uft-8
Connection	like a leaf on the wind
Request Headersview source
Host	ledger.robotarmyma.de:7001
User-Agent	Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:1.9.2.3) Gecko/20100401 Firefox/3.6.3
Accept	text/javascript, application/javascript, */*
Accept-Language	en-us,en;q=0.5
Accept-Encoding	gzip,deflate
Accept-Charset	ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive	115
Connection	keep-alive
Content-Type	application/x-www-form-urlencoded; charset=UTF-8
Referer	http://ledger.robotarmyma.de:3000/public/test/index.html
Content-Length	91
Origin	http://ledger.robotarmyma.de:3000

FIREBUG POST

Parametersapplication/x-www-form-urlencoded
JSON	{"pony":"cake","name":"biscuit"}
callback	jsonp1275368382519
Source
JSON=%7B%22pony%22%3A%22cake%22%2C%22name%22%3A%22biscuit%22%7D&callback=jsonp1275368382519

jq-test.js

   module("LedgerService");
     $.ajaxSetup({
                url: 'http://ledger.robotarmyma.de:7001',
    });

    var item = {pony :'cake', name : 'biscuit'};
      
    asyncTest("POST one with jsonp", 2, function(){
      $.ajax({
            type:'POST',
            data: {JSON:JSON.stringify(item) },
            dataType:'jsonp',
            success: function(data,status,xhr) {
              ok(status =='success', "status -" +status);
              ok(true,"Cross Domain Access-Control-Allow-Origin");
              ok(data != null,"Post Returned Something");
            },
            error:function() {
              ok(true);
              ok(false,"error - on post");
            },
            complete:function(xhr,status) {
              start();
            }
          });
    });

lo.js

LedgerService.prototype.POST = function(request,response,data) {
  var uri = url.parse(request.url,true)
  RH(request)
  out = ";"+data['callback']+"("+data['JSON']+");";
  PJ(out);
  response.writeHead(200, 'from one post to another - walking the way',{
        'Content-Length': out.length,
        'Content-Type': 'application/json;charset=uft-8',
        'Connection' : 'like a leaf on the wind'
  });
  response.write(out,'utf8');
  response.end();
}

RESPONSE!

service.js

LedgerService.prototype.service =  function() {
  var self = this;
  var http = require('http'),
  sys = require('sys');
  self.server = http.createServer();
  self.server.addListener('request',function(request,response) {
    var data = "";
    var method = request.method;
    PJ(method);
    request.setEncoding('UTF8');
    request.addListener('data',function(chunk) {
      data += chunk;
    });
    request.addListener('end',function() {
      var json = querystring.parse(data);
      self[method](request,response,json);
    });
  
  });
  self.server.addListener('close',function(errno) {
    sys.puts('close ' + errno);
  });
  self.server.listen(7001);
};