Why doesn't HttpClient send my cookie?

I am using Apache HttpClient 4 in Java.
Why doesn't HttpClient send the cookie specified by the "request" response to post1?

public static void goDoIt() throws ClientProtocolException, IOException {

    HttpClient client = new DefaultHttpClient();
    //for use with Fiddler2
    HttpHost proxy = new HttpHost("127.0.0.1", 8888);
    client.getParams().setParameter(ConnRoutePNames.DEFAULT_PROXY, proxy);
    //stores all cookies automatically (should sent them too(?))
    CookieStore cookieStore = new BasicCookieStore();
    HttpContext localContext = new BasicHttpContext();
    localContext.setAttribute(ClientContext.COOKIE_STORE, cookieStore);

    HttpGet request = new HttpGet("http://www.websitename.de");
    request.addHeader("Host", "hosthost.de");
    request.addHeader("User-Agent", "Mozilla/5.0 (Windows NT 6.0; rv:2.0.1) Gecko/20100101 Firefox/4.0.1");

    //required to fetch Cookie 1, stored automatically
    HttpResponse response1 = client.execute(request, localContext);
    request.abort();

    // parameters and headers
    List<NameValuePair> parameters1 = new ArrayList<NameValuePair>();
    parameters1.add(new BasicNameValuePair("username", "karl"));
    parameters1.add(new BasicNameValuePair("age", "23"));
    parameters1.add(new BasicNameValuePair("button","button"));

    HttpPost post1 = new HttpPost("http://websitename.de/Default.aspx");

    post1.addHeader("Host","hosthost.de");
    post1.addHeader("User-Agent",
            "Mozilla/5.0 (Windows NT 6.0; rv:2.0.1) Gecko/20100101 Firefox/4.0.1");
    post1.addHeader("Referer","http://websitename.de/Default.aspx");

    UrlEncodedFormEntity entity1 = new UrlEncodedFormEntity(parameters1);
    post1.setEntity(entity1);


    // execute and print
    HttpResponse response2 = client.execute(post1,localContext);
    HttpEntity entity2 = response2.getEntity(); //fiddler doesn't show that the cookie is being sent !

    System.out.println(EntityUtils.toString(entity2));
}

I used Fiddler2 to view traffic, and when I compare Post with my code on one of Firefox, I see no difference, except that my code does not send cookies.