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From Shazron <shaz...@gmail.com>
Subject Re: [iOS] Possible Cordova bug with WebSocket in plugin callback
Date Tue, 03 Feb 2015 20:19:13 GMT
This could be related https://issues.apache.org/jira/browse/CB-2301 (a
really old one)

On Tue, Feb 3, 2015 at 8:58 AM, Edna Y Morales <eymorale@us.ibm.com> wrote:
>
>
> Hi all,
>
> I'm working on a bug that was reported for iOS (not through Jira), and I'm
> running out of ideas on figuring out what is going on. So I'm reaching out
> to the dev list to see if anyone can provide insight or thoughts on what
> may be going on. The use case is this:
>
> 1. Call navigator.geolocation.getCurrentPosition(success, error);
> 2. Inside the success callback, open a websocket.
> 3. Inside websocket.onopen event handler, have a for loop that runs 20,000
> times. Inside the for loop send a message to the websocket, increment a
> counter, and update an element in the DOM with the new count.
>
> The crash happens on the DOM update inside of the for loop. If I move the
> websocket code outside of the plugin callback, the crash is not seen. If I
> append a new element to the DOM instead of updating the same element, the
> crash is not seen. If I switch out the Cordova geolocation plugin for the
> native one, the crash is not seen. I have tried a few other scenarios but
> can't pinpoint anything. The crash is happening on the WebThread and
> sometimes I get this message "[CFRunLoopTimer release:]: message sent to
> deallocated instance 0x174370c80". The stack trace doesn't trace back to
> anything specific to Cordova code. It's from the WebCore. It seems like it
> could just be a bug in WebKit, but some of the scenarios mentioned above
> also make that hard to verify. If anyone has any insight on this, it would
> be great. Let me know if you need anymore details.
>
> Thanks,
> Edna Morales

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