Licensee was looking for a way to get total file size to display download progress. On Windows (which uses the curl library for Http request/response), binding a function to the OnRequestProgress delegate and getting the FHttpResponsePtr from the FHttpRequestPtr and calling FHttpResponsePtr::GetContentLength() correctly returns the total file size.
Output from sample project
On Mac total size returns the same value as received size, so it's not possible to calculate a percent done. (I only tested Mac, but if memory serves, the implementation is the same for Mac and iOS):
Originally reported here:
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