On Saturday, June 16, 2012 10:24:01 PM UTC+2, Carsten wrote: > > So let me reiterate if I got it. Before xsiframe one had to place the Host > Html and the GWT app and all resources used by the GWT app on the same > server/domain (a.k.a. origin). > > With xsiframe you can place the GWT app and all its resources (including > the file I tried to GET above) on a server but place the Host HTML on a > different server, correct? >
Yes. So what is possible with this setup? > > Server1: just the Host HTML > Server2: the GWT app + all resources > > a) can I somehow allow Server1 to somehow hand some initializing data to > the GWT app? Let's say the GWT app is some sort of viewer/canvas/renderer > and I can allow people to include it in their website and give some JSON to > the GWT app when it is started? > Initialize some global JS variable and read it from the script (GWT app) at startup. Alternately, put attributes on some element (with a specific id="" or class=""), that the script will read. This is how Google +1 button, Twitter button and Facebook Like button work, for instance. > b) let's say Server1 with the Host HTML is on Appengine. Can the GWT app > from Server2 when run from the Host HTML from Server1 POST a JSON string to > a URL of the Server1 (which will ultimately be handled by appengine)? Yes. The script files come from Server2, but they run in the HTML host page from Server1, so they technically "are from Server1" as far as SOP is concerned. To talk to Server2, you can take advantage of CORS in browsers that support it (all but IE –IE10 will support CORS, IE8 and IE9 support it through a special XDomainRequest, that GWT doesn't use– and Opera up to the latest –Opera 12 finally support CORS–), use JSON-P (JsonpRequestBuilder in GWT), post data through forms (FormPanel in GWT, but the response needs to redirect to some page at Server1 to communicate results), or go through a "proxy" at Server1 (i.e. call Server1, which will call Server2 and send the response back). -- You received this message because you are subscribed to the Google Groups "Google Web Toolkit" group. To view this discussion on the web visit https://groups.google.com/d/msg/google-web-toolkit/-/wrL7GfexIpsJ. To post to this group, send email to google-web-toolkit@googlegroups.com. To unsubscribe from this group, send email to google-web-toolkit+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-web-toolkit?hl=en.
