Notes on Resuming Downloads

The success of the resume functionality is very dependant on which particular server you're reaping. I've found that some work really well, some don't work at all. It depends on the amount of information the server returns from the initial request. If the server passes back the correct 'last modified' date and the correct file size for a particular object, then resume will work. However, many sites run servers which don't (e.g., for some reason you can get 2k html files being indicated as only having 825 bytes). Of course to ensure files aren't missed, WR is over-cautious and re-downloads anything which could have changed.

There's a couple of ways to speed up resumes, as long as you don't mind if the odd file isn't always refreshed: