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From "Shazron Abdullah (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CB-11885) iframe message error
Date Fri, 23 Sep 2016 20:15:20 GMT

    [ https://issues.apache.org/jira/browse/CB-11885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15517450#comment-15517450
] 

Shazron Abdullah commented on CB-11885:
---------------------------------------

Tested your sample project, thanks for that. Well, it's a known problem now, I'm not sure
if Apple's WebKit devs know about it yet, could you file an issue on bugs.webkit.org?
I'll label it as such.

> iframe message error
> --------------------
>
>                 Key: CB-11885
>                 URL: https://issues.apache.org/jira/browse/CB-11885
>             Project: Apache Cordova
>          Issue Type: Bug
>          Components: Plugin WKWebViewEngine
>    Affects Versions: 4.2.1
>         Environment: iOS 9
>            Reporter: Pier Bover
>            Assignee: Shazron Abdullah
>              Labels: wkwebview-known-issues
>
> When trying to communicate between an iframe and the main window using Window.postMessage()
I get the error:
> {{Blocked a frame with origin "null" from accessing a frame with origin "null"}}
> This only happens from the iframe to the main window, when communicating the other way
around it works fine.
> Both files are run locally. The error only happens after adding the plugin {{cordova-plugin-wkwebview-engine}}.
When using UIWebView the error does not happen.
> The weird thing is that this error is shown exactly 11 times, but the message goes through
anyway. See this screenshot taken from Safari while using the simulator: http://i.imgur.com/JJkIEy5.jpg
You can see the MessageEvent happening at the end.
> I have added {{sandbox="allow-same-origin allow-scripts allow-popups allow-forms"}} to
the iframe tag but it didn't fix it.
> This is the code that listens to the message:
> {{window.addEventListener("message", eventHandler, false);}}
> And this is the code that emits the message from the iframe:
> {{parent.postMessage(something,"*")}}



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