title: GWT RPC call not working in compiled mode
body: <p>I am building a GWT app. Previously, whenever I requested an image from the web-page, that request went to a client-class, and that class used to serve the image. This worked for both GWT generated URL as well as the standalone file URL after compilation.</p>
  
  <p>But now I have replaced that part with a Ajax (RPC) call to the server, where the serverside class is receiving the necessary parameters from the client-class, and serving the image, which is being sent by the client-class to the UI. This works fine with GWT generates URL, but after compilation, when I am trying to run it as a standalone HTML (by giving the path to the file in the URL bar), no Ajax request is fired.</p>
  
  <p>Is is because the RPC call needs a server to respond to (in contrast to jQuery Ajax calls, which work jolly well in desktop alone)? How can I mimic the Ajax behavior in Desktop mode also? The call looks something like this:</p>
  
  <pre><code>private final GreetingServiceAsync response = GWT.create(GreetingService.class); //(I haven't changed the defualt names..:))
  response.greetServer(i, j,new AsyncCallback&lt;String,String&gt;() {  // i,j is already calculated, server needs to know these to pass an image url
       public void onSuccess(String url1, String url2) {...}
       public void onFailure(Throwable caught) {...}
  });
  </code></pre>