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Editorial Team
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Asked: 2026-05-31T23:13:07+00:00

I’m using NSURLConnection to grab an XML file. I parse the XML file and

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I’m using NSURLConnection to grab an XML file. I parse the XML file and then use it to populate Core Data.

If the NSURLConnection fails to connect (i.e. user has no internet connection), I just read the persistent data from Core Data.

However, I’m thinking… Is there a way that I can do a check on the XML file to see if it has updated from the last time I used it? So I can save redownloading/repopulating it if is unchanged?

Checking Last Modified on the file or something?

Anyone have a good solution for this?

Thanks!

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1 Answer

  1. Editorial Team

    This can be done by checking the http headers or etags.

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