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POActionscript's ExternalInterface.addCallback only working locally, not in production
 

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    <p>In my Flex app, I need a Javascript control to call one of my Actionscript methods. Simple enough, according to the Flex/Actionscript documentation, I wrote this in my Actionscript code:</p> <pre><code>if (ExternalInterface.available) ExternalInterface.addCallback("setName", setNameInActiveWindow); </code></pre> <p>In the Javascript control I wrote:</p> <pre><code>document.getElementById('FlexAppId').setName(name); </code></pre> <p>Works great. Exactly as expected, so I went to production. But it doesn't work in production :(. Same exact code... I can't figure it out. The above Javascript code is run, but the callback is not executed in the Actionscript code.</p> <p>Does this have something to do with domain security? Locally, I'm using local.mydomain.com:8080 where local.mydomain.com resolves to 127.0.0.1 (I need to do this so some widgets work properly). And the Flex app comes from the same local webserver. In production, however, it's just www.mydomain.com (mydomain.com is not the real domain name) and the Flex app comes from flash.mydomain.com (a CDN).</p> <p>I have a crossdomain.xml file at www.mydomain.com:</p> <pre><code>&lt;?xml version="1.0"?&gt; &lt;!DOCTYPE cross-domain-policy SYSTEM "http://www.adobe.com/xml/dtds/cross-domain-policy.dtd"&gt; &lt;cross-domain-policy&gt; &lt;site-control permitted-cross-domain-policies="master-only"/&gt; &lt;allow-access-from domain="*.mydomain.com"/&gt; &lt;/cross-domain-policy&gt; </code></pre> <p><strong><em>UPDATE</em></strong>: I tried changing the local environment so that the Flex app is referenced from flash.mydomain.com, just like in production. It turns out I get the same problem locally too... so it seems this is some kind of domain security issue despite the crossdomain.xml file I have above. Do I need to change something in my crossdomain.xml? Is there something additional I need to get <code>ExternalInterface.addCallback</code> to work?</p> <p><strong><em>UPDATE 2</em></strong>: Got it to work! I had to do both <code>Security.allowDomain("*")</code> and <code>Security.allowInsecureDomain("*")</code>. Setting it to flash.mydomain.com did NOT fix the issue, I had to put a wildcard. <code>allowNetworking</code> had no effect. I need <code>allowScriptAccess="always"</code>, but I had that from before. Calling Javascript with <code>ExternalInterface.call</code> works easily with just that parameter. But adding a callback with <code>ExternalInterface.addCallback</code> requires the above Security methods with a wildcard.</p>
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    1. COcrossdomain.xml shouldn't matter. is your html also on the server or is the html local and loading a swf remotely?
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    2. COlocally, the html and flash both come from local.mydomain.com:8080. Remotely, the html comes from www.mydomain.com and flash comes from flash.mydomain.com. When I change the flash location locally to flash.mydomain.com, I get the same problem, callbacks no longer work.
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    3. COWhat is the value of the allowScriptAccess param in the surronding HTML that embeds your Flex app?
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      1. USFlorian F
 

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