HttpListenerReponse and PHP POST requests

Question

Here is how the packets look

HTTP/1.1 200 OK
Content-Encoding: gzip
Vary: Accept-Encoding
Date: Thu, 18 Oct 2012 13:52:49 GMT
Server: LiteSpeed
Connection: close
X-Powered-By: PHP/5.3.10
Content-Type: text/html
Content-Length: 35 

And

HTTP/1.1 200 OK
Content-Length: 35
Content-Type: text/html
Content-Encoding: gzip
Vary: Accept-Encoding
Server: Microsoft-HTTPAPI/2.0
Date: Thu, 18 Oct 2012 14:17:13 GMT
Connection: close

The GZIP output for both is the same yet the top one which is generated with PHP works and the bottom one which is HttpListenerResponse generated doesn't with a POST request, even though you can view both in a browser. I also do not call cross domain/port.

How do I make the second request work?

Answer 1

Added some headers removed some headers everything started working! You need to allow access control origin or it will only work on IE.