CodenameOne Connection Request hangs when repeated - connection

Question

I have the following Codename One code for accessing a network resource. It is almost an exact copy of the Codename One tutorial for this use case.
public void executeRequest(){
String url = "http://www.random.net";
InfiniteProgress prog = new InfiniteProgress();
final Dialog dlg = prog.showInifiniteBlocking();
ConnectionRequest r = new ConnectionRequest() {
#Override
protected void postResponse() {
//handle changes to my form
}
#Override
protected void readResponse(InputStream input)
throws IOException {
//handle parsing data
}
#Override
protected void handleIOException(IOException err) {
super.handleIOException(err);
}
};
r.setUrl(url);
r.setPost(false);
r.addArgument("arg", "2");
r.setDuplicateSupported(true);
r.setDisposeOnCompletion(dlg);
NetworkManager.getInstance().addToQueue(r);
}
The first time I run it - no problem. If I try to "refresh" my data by calling the same method over again, the app will hang up with the InfiniteProgress dialog spinning forever. Its almost like the first network request is not ever really completing, and then the second one kind of conflicts. Any ideas what I'm doing wrong?

Answer 1

By default duplicate requests to the exact same URL are disabled, try invoking setDuplicatesSuppotred(true) on the connection request.

Answer 2

For future reference, what fixed this for me was to use
NetworkManager.getInstance().addToQueueAndWait(r);
instead. That cleared up most of my problems.

Answer 3

I stucked with the same problem and none of solutions worked. However, I did it this way:
final NetworkManager nm = NetworkManager.getInstance();
nm.setTimeout(3000);
then
protected void postResponse() {
...
nm.shutdown();
}
and call was made as
nm.addToQueueAndWait(request);
Maybe the fact that NetworkManager was made final did the job, but I put "shutdown" just for sure. It worked for me