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From "Sutter, Peter" <>
Subject Re: Calling progress/completion block on main thread
Date Wed, 28 Jan 2015 13:17:35 GMT
Hi Gavin,

thanks for the answer. We will try out the new changes in our project
within in the next days and see how it runs :)

Best regards,

On 1/28/15, 2:01 PM, "Gavin Cornwell" <> wrote:

>Hi Peter,
>Ah, good question, yes, there was a very good reason.
>NSURLSession uses background threads itself when a request is executed, I
>found that the NSURLSession delegate methods were being called on the
>thread NSURLSession created and not the one you resume the task on.
>Without forcing the progress/completion blocks to be run on the main
>thread it meant the ObjectiveCMIS code never got called, every one of our
>unit tests timed out.
>We have integrated the library into our SDK and subsequently into the app
>and have not found any issues with this approach so far but I can see how
>this could cause a problem if you’re relying on the old threading
>behaviour of NSURLConnection.
>I don’t recall seeing anything in the NSURLSession documentation about
>taming this behaviour but I could be wrong!
>Hope that helps,
>On 28/01/2015 12:02, "Sutter, Peter" <> wrote:
>>Hi Gavin,
>>I just looked through your changes regarding switch from NSURLConnection
>>to NSURLSession.
>>I saw that you are calling completion blocks or progress blocks now on
>>main thread. Was there a special reason for it? Because we call the CMIS
>>library from a background thread and also expect the completion and
>>progress blocks to be executed on the same thread.
>>Best regards,

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