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Date: Thu, 22 Sep 2016 14:49:21 +0000 (UTC)
From: "Pier Bover (JIRA)" <jira@apache.org>
To: issues@cordova.apache.org
Message-ID: <JIRA.13006721.1474510747000.638780.1474555761611@Atlassian.JIRA>
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References: <JIRA.13006721.1474510747000@Atlassian.JIRA> <JIRA.13006721.1474510747900@arcas>
Subject: [jira] [Commented] (CB-11885) iframe message error
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archived-at: Thu, 22 Sep 2016 14:49:23 -0000


    [ https://issues.apache.org/jira/browse/CB-11885?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15513490#comment-15513490 ] 

Pier Bover commented on CB-11885:
---------------------------------

[~shazron] is this a known problem?

> 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
>
> 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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