* Build HttpClient POST message.
*/
// Add all properties/parameters to credentials POST request.
PostMethod postMethod = new PostMethod(gatekeeperUrl);
Properties properties = gatekeeperMessage.encodeToProperties();
Iterator propsIter = properties.entrySet().iterator();
while (propsIter.hasNext()) {
Map.Entry entry = (Map.Entry) propsIter.next();
String fieldName = (String) entry.getKey();
String fieldValue = (String) entry.getValue();