Hi,

Can anyone give me an idea about how you can access the MySpace OpenSocial APi from an iFrame app using flash?

Every call I make at the moment from my iFrame app generates a security error due to the domain my iFrame app is on not being allowed access to http://api.myspace.com  because of this crossdomain file http://api.myspace.com/crossdomain.xml.

Not sure exactly how/where you are running your app but you could try creating your own crossdomain.xml for your server

<cross-domain-policy>
<allow-access-from domain="*.myspace.com"/>
<allow-access-from domain="*.myspacecdn.com"/>
</cross-domain-policy>

Eddie

Eddie - 

 Thanks for the reply but you're misunderstanding cross domain policy files. 

"A cross-domain policy file is an XML document that grants a web client—such as Adobe Flash Player (though not necessarily limited to it)—permission to handle data across multiple domains. When a client hosts content from a particular source domain and that content makes requests directed towards a domain other than its own, the remote domain would need to host a cross-domain policy file that grants access to the source domain, allowing the client to continue with the transaction."

So, for example, let's imagine we have an iFrame on a MySpace canvas page that has a test.swf embedded and loaded from a domain called 'test.com'.The problem is that test.swf from test.com has to check the cross domain policy file on myspace.com in order to make a request to myspace.com. If the cross domain policy file on myspace.com doesn't allow calls from 'test.com' a security error event is fired and the call to myspace.com fails. I am having this exact problem too and I'm not sure how you're supposed to get around it.

 Any thoughts from the myspace development team?

 Cheers,

T

 Here is the work around. I use embed swfObject tag and have swf on my server and using ExternalInterface.call to communicate with OS API javascript layer on iFrame.

You can either host your swf on myspace (use the HTML/Javascript Source app type), or you can do your api calls from javascript and use ExternalInterface in flash to communicate with your javascript code.