On 15 Dec 2004, at 23:33, Alex Tweedly wrote:
At 12:59 15/12/2004 -0800, Richard Gaskin wrote:
This conversation raises a question -
There are currently two ways to download files, the "load" command and "get URL".
3 if you count libURLDownloadToFile (though it's for ftp only)
This works with http too. (Perhaps you were thinkig of libUrlFtpUploadFile.)
It used to be the case that "load" was a better option for longer downloads and/or if you need to update a progress bar, since it was the only one of the two that was non-blocking and you could querty the urlStatus for those downloads.
But now that we have the libUrlStatusCallback option, which provides periodic messages for "get URL", is there any benefit to using "load"?
Yes, lots of them (I think).
But they can all probably be summarized under one heading, i.e "load" is good when you need to get on with something else while the stuff is downloading.
Richard's thought may stem from a similar experience to mine. Previously, "load" was often preferred because it was the only way to show progress of the download, and not because there was a need to do other processing. In my own apps, I almost always need to pause other things until a download completes. (e.g. a learner chooses a lesson to open, and can't work on it until it has downloaded) "load" wasn't ideal for this. But "load" was often recommended over "get" because of this ability to show progress. With the libUrlStatusCallback option, I now rarely need to use load. It's much simpler to use get.
Caveat: when using "get", there's no obvious way to abort a download before it completes. This should probably go on the to-do list.
Cheers
Dave
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