[tahoe-dev] Downloading file range

[slush]

Damn! I though I have 1.8.0 on this node, so I did not check that against
trunk sources. I'm sorry.

You are right, ranges on 1.8.0 works perfectly.

Marek

On Wed, Oct 20, 2010 at 5:18 PM, Brian Warner <warner at lothar.com> wrote:

> On 10/20/10 5:53 AM, slush wrote:
> > Hi,
> >
> > I found that TahoeLAFS solves support for "Range" header with
> > downloading whole file from grid and then returning a subset of original
> > file. Is that because downloading just of small piece of file is
> > impossible in Tahoe by it's design or just because nobody
> > ask/implemented partial downloads from grid better?
>
> This was fixed in 1.8.0 (at least for immutable files) by my
> "new-downloader" project. The new code only downloads the segments
> (typically 128KiB each) that overlap the range you requested.
>
> Tahoe's file-encoding scheme was specifically designed to make it
> efficient to download individual segments with minimal overhead (about
> 0.5%, if I remember rightly), but up until 1.8.0, we hadn't gotten
> around to taking advantage of it.
>
> cheers,
>  -Brian
>
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