iOS - downloadedBytes and totalBytes cannot handle large files.

[markive]

Hi @kosso,

I've been using your fork for sometime in my app. I have a few client projects in my app that require a very large initial download (>4gb) and although the download completes, because int's are used in the Objective-C code, if the file is this large then it reports a negative number for totalBytes and downloadedBytes.

I have had a go at converting the code to use long instead but I can't fix the issue, I'm not very experienced with Objective-C.

Thanks for any help!