Can't send POST data from servlet

Hi,
I have a servlet that receives data via GET method, process the request and then it has to send feedback to an url, but the query string that
I have to send must be in a POST method.
I ilustrate this:
http://host:port/myservlet?param1=value1
myservlet proccess and then calls
http://external_url (with param2=value2 via POST)
I've tried to put an HttpURLConnection
URL url = new URL("http://localhost:7001/prueba.jsp");
java.net.HttpURLConnection con= (HttpURLConnection)url.openConnection();
//POST data
URL url = new URL("http://localhost:7001/prueba.jsp");
HttpURLConnection c = (HttpURLConnection)(url.openConnection());
c.setDoOutput(true);
PrintWriter out = new PrintWriter(c.getOutputStream());
out.println("param2=" + URLEncoder.encode("value2"));
out.close();
but I get this error.
lun mar 10 13:53:46 GMT+01:00 2003:<W> <ListenThread> Connection rejected: 'Login timed out after 5000 msec. The socket
came from [host=127.0.0.1,port=2184,localport=7001] See property weblogic.login.readTimeoutMillis to increase of decreas
e timeout. See property weblogic.login.logAllReadTimeouts to turn off these log messages.'
(it's a weblogic 5.1 problem, i've been researching a little bit)
And I don't want to call a jsp that generates a post form, and then it's auto-submitted with javascript. (this will be the last remedy!!)
How can i do this?
All suggestions will be grateful.
Thanks in advance.
PD: sorry for my english :)

I make an URLConnection and I intended to know if the post data was
sent right. Then, in my machine, under weblogic 5.1, I developed a jsp with this code:
<%
URL url = new URL("http://machine2/examples/prueba.jsp");
HttpURLConnection c = (HttpURLConnection)(url.openConnection());
c.setDoOutput(true);
PrintWriter outd = new PrintWriter(c.getOutputStream());
outd.println("param1=" + URLEncoder.encode("value1"));
outd.close();
c.disconnect();
%>
and in machine2 (using tomcat 4.1), I simply put a line in prueba.jsp:
System.out.println(request.getParameter("param1"));
and I don't get "value1" in the tomcat log as expected (I think).
I also tried with adding this properties:
c.setRequestProperty("Content-Length", size...);
c.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
and it didn't work!
what's wrong?

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