On Tue, Apr 27, 2010 at 1:26 PM, Darin Fisher <da...@chromium.org> wrote: >> It would be nice to be able to allow streaming such that every time a >> progress event is fired only the newly downloaded data is available. >> The UA is then free to throw away that data once the event is done >> firing. This would be useful in the cases when the page is able to do >> incremental parsing of the resulting document. >> >> If we add a 'load mode' flag on XMLHttpRequest, which can't be >> modified after send() is called, then streaming to a Blob could simply >> be another enum value for such a flag. >> >> There is still the problem of how the actual blob works. I.e. does >> .responseBlob return a new blob every time more data is returned? Or >> should the same Blob be constantly modifying? If modifying, what >> happens to any in-progress reads when the file is modified? Or do you >> just make the Blob available once the whole resource has been >> downloaded? >> > > > This is why I suggested using FileWriter. FileWriter already has to > deal with > most of the problems you mentioned above,
Actually, as far as I can tell FileWriter is write-only so it doesn't deal with any of the problems above. > and you can get a FileWriter > either from <input type=saveas> [1] or from a FileEntry object [2]. > One possible API for engaging this mode might be: > var x = new XMLHttpRequest(); > x.open("GET", url, true); > x.streamToFile(fileWriter); > x.send(null); And how would you get the actual data? / Jonas