Call Vaadin 7 app via curl problem


I have a Vaadin 6 application, which job is to create a PDF file. I call it via curl() in php:

$ch = curl_init(“”);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, array(“Content-type: multipart/form-data”));
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_HEADER, false);

    $res = curl_exec($ch);

It works fine when the app was in Vaadin 6. Since I updated it to Vaadin 7 it doesn’t work.

What is the problem? How can I call the Vaadin 7 version via curl()?

So what is the result of the call?

With Vaadin 6 version: The PDF is generated (Jasper)
With Vaadin 7 version: Nothing happens, it stops.

I think the problem is, that in Vaadin 7 a JavaScript starts the application, and the Curl can"t run it.
This can be find in the FireBug: vaadin.initApplication(“cpdf-1213628635”,{

Is there solution to this or I have to use the Vaadin 6 to this?