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Re: How much time do I have to move a NSURLSession temporary file?
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Re: How much time do I have to move a NSURLSession temporary file?


  • Subject: Re: How much time do I have to move a NSURLSession temporary file?
  • From: "Quinn \"The Eskimo!\"" <email@hidden>
  • Date: Wed, 01 Apr 2015 10:36:33 +0100

On 31 Mar 2015, at 21:00, Daryle Walker <email@hidden> wrote:

> Everything has been working for the past few trials, then spontaneously stopped working. Now I’m getting '“TempFile.whatever” doesn’t exist’ errors.

Two things:

o Make sure you're delegate queue is a serial queue (set maxConcurrentOperationCount to 1).  Without that it's very easy to tie yourself up in knots here.

o Are you sure that the file was created in the first place?  I've seen situations where the download failed but -URLSession:downloadTask:didFinishDownloadingToURL: was called anyway and the file didn't exist.  I haven't yet got to the bottom of the problem but I suspect it's related to a race condition described in the DevForums post referenced below.

<https://devforums.apple.com/message/1115836#1115836>

Share and Enjoy
--
Quinn "The Eskimo!"                    <http://www.apple.com/developer/>
Apple Developer Relations, Developer Technical Support, Core OS/Hardware



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