Send xml file over https - urgent

Question

Helo everybody.
I need to solve next problem:
1. Build/Use a client program that can operate with the HTTPS protocol. There are no restrictions on the type of client program used, providing it can use this protocol and deal with transactions synchronously.
2. Build/Use a program that can build a valid request XML document and attach it via a POST parameter to a HTTPS request.
POST /<URL_TO_SUBMISSION_SITE> HTTP/1.0
Example
User-Agent: HTTPTool/1.0
Content-Type: application/x-www-form-urlencoded
Content-Length: 9999999
<XML_DOCUMENT> &#1048773;Post Payload
or
POST /<URL_TO_SUBMISSION_SITE> HTTP/1.0
User-Agent: HTTPTool/1.0
Content-Type: application/x-www-form-urlencoded
Content-Length: 9999999
xml=<XML_DOCUMENT>
3. Ensure the program can retrieve the HTTPS response and parse the returned XML payload.
4. Ensure the program can correctly interpret the inquiry response information within the XML return.
Please help me in point 2. I don't know how to attach xml document to https request.
I'm trying something like this :
System.setProperty("java.protocol.handler.pkgs",
     "com.sun.net.ssl.internal.www.protocol");
     try {
url = new URL("https://" + path);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
URLConnection con = null;
try {
con = url.openConnection();
con.setDoInput(true);
con.setDoOutput(true);
con.setAllowUserInteraction(true);
con.setRequestProperty("Content-type", "application/x-www-form-urlencoded;charset=Cp1250");
con.setRequestProperty("Content-Length","9999999");
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
but without success. Please help

Answer 1

Just saw a link, may be this will help you : http://resellers.tucows.com/documentation/xmlhttpspost.pdf