cross domain http response

[Maksim Ustinov]

Is there any workaround for http response.
I have Servlet hosted on another server for large file upload (GAE
does not support files larger than 10 mb) and I really need to get
response back from the server with the name of the file and if it was
successful uploaded or not.
What can I do to get that response? What technologies can be used for
that? One thing that I can think of is to Saving that response to the
database, but it is kind of worthless and resource consuming. Any
ideas?

Thanks.

[Hetman]

I think that simply solution is to make your servlet parse normal POST
request and use FileUpload inside FormPanel.

Also then in future you can use swfupload to show progress of upload
(but then remember to load swf file from server where you want send
data)

but this only is so simple if you dont need autorization for upload.

[Max]

I afraid this is not going to work.
I have Application written with GWT 1.7 (just updated). I have one
page where I upload file to the remote server that is on different
domain. So, when I do Post to the server file gets uploaded to the
server but when it's time to get response I'm getting NULL. Here is
what I have:

Servlet:
=========== START =============
...
resp.setStatus(HttpServletResponse.SC_CREATED);
resp.getWriter().print("The file was created successfully.");
resp.flushBuffer();
...
=========== END ===============

GWT:
============== START ============
form.addSubmitCompleteHandler(new FormPanel.SubmitCompleteHandler() {
public void onSubmitComplete(SubmitCompleteEvent
event) {
Window.alert(event.getResults());
}
================ END =============

Javadoc for event.getResults() said following: Returns: the result
html, or null if there was an error reading it @tip The result html
can be null as a result of submitting a form to a different domain.

I assume they mean here that there is a problem with Cross Domain
security.

This is the code example [ http://code.google.com/p/faculty-gwt/source/browse/#svn/trunk/examples/gwtfileupload
] that I tried to follow. It works as is, but when I'm calling my
servlet the response is null.

By the way I tried to use Firebug to see Headers and it seems to me
that servlet is sending response back.