On Monday, July 15, 2013 2:44:38 AM UTC+2, carrizo wrote:
>
> If I understand it correctly the RPC framework is intended only for 
> same-origin communication and the alternatives to workaround SOP are: using 
> RequestBuilder (XmlHttpRequest) directly or JsonpRequestBuilder (a <script> 
> tag).
>
> The downside with those alternatives is that you lose the automatic 
> serialization magic of the rpc framework which is very sad because these 
> days you can whitelist servers to make XmlHttpRequests safely.
>
> So before going to work directly with RequestBuilder I would like to know 
> if there is a way to enable it for xsite use. I'm assuming that the 
> implementation just uses RequestBuilder behind the scenes and that it would 
> be easy to change it.
>

I don't think CORS is a problem with GWT-RPC. Did you try it?

Notes:

   - GWT-RPC is built on top of RequestBuilder, so whatever you can do with 
   RequestBuilder you can do it with GWT-RPC too (note: you can make your 
   async methods return a Request or RequestBuilder instead of 'void'; Request 
   allows you to cancel an ongoing call while RequestBuilder allows you to 
   tweak the request before send()ing it)
   - Not all browsers support CORS there days unfortunately (IE, you 
   guessed it; only IE10+ supports it: http://caniuse.com/cors)
   - If you cannot use CORS, you still have the option to use a "proxy" on 
   the same origin as your HTML host page. A while ago I posted the code of a 
   servlet in 
   https://code.google.com/p/google-web-toolkit/issues/detail?id=3131

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