[Dojo-interest] Dojo cross-domain communications (iframe)

[Dustin Machi]

This will work for you I believe. http://www.sitepen.com/blog/2008/07/22/windowname-transport/

Dustin

http://www.sitepen.com/blog/2008/07/22/windowname-transport/

On Jun 22, 2010, at 1:22 PM, Victor Danilchenko wrote:

> On 6/22/10 10:07 AM, Stefano Gargiulo wrote:
>> what do you need excactly?
>> 1) cross-domain ajax requests?
>> 2) operating with a real iframe document dom?
>> 
>> for 1) see dojo.io.script and jsonp
>> for 2) wait html5 and the allow-same-origin attribute in iframes.
> 
> 	Unfortunately, I need #2 -- communication between frames with different 
> origins. This is due to a single-domain license we have on one component 
> of our product (the product is spread across multiple domains which 
> share common server resources). We load this licensed component in an 
> iframe, but for one particular feature, it has to communicate with the 
> container page.
> 
> 	I have already implemented a dual-prong solution (URL fragments or 
> postMessage, depending on the capability test results), only to discover 
> that my very, very favorite browser -- IE7 -- does not support either 
> method. Ugh, how I hate it...
> 
> 	I googled it, and found some information on IE7 policy settings 
> pertaining to the cross-domain frame navigation. However, this doesn't 
> help me -- with that flag enabled, I still can't access 
> iframe.contentWindow.location -- and anyway, we can't expect our users 
> to follow non-trivial instructions on managing IE security policy.
> 
> 	The obvious solution would be to scrap the whole thing and use a common 
> server endpoint for communicating between the frames, but that would be 
> a rather more complicated solution to implement; and if there's one 
> programmer's virtue I possess in abundance, it's laziness.
> 
> 	Does anyone know of some IE7 hack for communicating between 
> different-origin frames?
> 
> 	Thanks in advance guys, you have been most helpful this far.
> 
>> Il 21/06/2010 22:41, Victor Danilchenko ha scritto:
>>> 	Hi all,
>>> 
>>> 	I am hoping someone here can help me with what should have been a
>>> non-problem.
>>> 
>>> 	Does Dojo have some facility to support cross-domain communication with
>>> an iframe-wrapped page? I vaguely seem to recall reading about it
>>> somewhere in the docs, about Dojo supporting communication via the hash
>>> fragment, but now I don't seem to be able to find it.
>>> 
>>> 	I have actually rolled my own (it's a really trivial problem, the
>>> framed page has to send one string to the container page), and then I
>>> realized that Firefox 3.5 is refusing to permit the container page to
>>> read the iframe.contentWindow.location attribute (I get the "Permission
>>> denied  to get property Location.hash from" error), even though that's
>>> been readable forever. I know I have the basic functionality right
>>> because the hash-fragment setting/polling works when the iframe is local.
>>> 
>>> 	I am hoping Dojo has some workaround in place for that.
>>> 
>>> 	Alternatively, perhaps I am doing something really obviously stupid,
>>> and someone can set me on the right path? Or at least point to a better
>>> place to ask?
>>> 
>>> 	Thanks in advance.
>>> 	
>>> 
>> 
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> 
> 
> -- 
> 	Victor Danilchenko
> _______________________________________________
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