IOError in IE but not in Firefox (problem possible crossdomain.xml)

Yesterday I debugged If all goes well a problem that happens for our application in Internet Explorer but not in Firefox.

This has to do with access to remote content from a separate domain.

In all aspects, it SEEMS to be a problem of crossdomain.xml, but the fact that this arrises only problem in IE is what prompted me to post here.

We have a solution in progress (in the bureaucratically speaking), but I want to check here.

Our application is the field of "a.domain".

It access a file xml on 'b.domain/xml/ '.

And finally (this is the tricky part) it also accesses an xml file to "b.domain/forwardingPath/" which is actually transmitted to the 'c.domain/xml/ '.

The crossdomain.xml is located at "b.domain/crossdomain.xml".

The application of "b.domain/xml/anXMLFile.xml" works without any problem.

The demand for the 'b.domain/forwardingPath/anotherXMLFile.xml' exists in Firefox but not in IE (remember, ACTUAL demand is sent to "c.domain/xml/anotherXMLFile.xml").

In Internet Explorer, I get an IOError.

I think that we need a proper crossdomain.xml file, also located in the "c.domain/crossdomain.xml" and put in this request.  I want to confirm is whether this interpretation is correct.  I'm not at all a person on the server side.  It's all of the elves and fairies for me.  And then finally, why the hell is this inconsistent behavior between IE and Firefox?  The version of flash player Firefox violates its own safety standards?

I swap this in the stack overflow.  field-xml-issue http://StackOverflow.com/questions/7395931/ioError-in-IE-but-not-in-Firefox-possible-Cross

I have ping our developers on this subject and this is what they have to say:

"We did some work for the plugin around redirects andhence the correct behavior on Firefox.

As far as I KNOW, on IE we don't get the redirection messages and may not participate in the decision-making process of security during redirection scenarios. This behavior is beyond our control.

There is a workaround solution described in the AS3docs here: http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/flash/system/LoaderCont ext.html #checkPolicyFile

Here's the relevant paragraph:

Be careful with checkPolicyFile if you are downloading anobject from a URL that can use HTTP redirects on the server side. Arealways policy files comes from the corresponding initial URL that you specify inURLRequest.url. If the final object comes from a different URL because of the HTTPredirects, the initially downloaded policy files might not applicableto the of the object's final URL, which is the URL that matters in security decisions. If you are in this situation, you can examine the value of ofLoaderInfo.url after receiving an orEvent.COMPLETE ProgressEvent.PROGRESS event, which tells you the final URL of the object. Then call the method theSecurity.loadPolicyFile () with a URL based on the object URL policy file ' sfinal. Then query the value of LoaderInfo.childAllowsParent until it becomes true. »

Chris

Tags: Flash Player

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