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Old 2004-01-24, 10:25   Link #1
ChibiDusk
Back From The Dead?
 
 
Join Date: Apr 2003
Location: Canada
Age: 25
...time wasted?

Well, first off all...
Do you guys know how when downloading batch files,
how the files slowly fill in as they are downloaded? Well...

I used the regular bittorrent [latest] to download a batch and
it got to 50% and about half the file were filled up.

Well, I went on the other computer which was networked
with the ones with the batch and I started up the download
[I resumed the file from the other computer] with Bittorrent
expiremental. Well...

After this the files said they were only 25% done!!!
I checked the folder and ALL the files were filled completely....

WTH is going on?
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Old 2004-01-25, 01:32   Link #2
Kyuchen
FFXI-maniac
 
Join Date: Jan 2004
Location: Earth
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Quote:
Originally Posted by ChibiDusk
Well, first off all...
Do you guys know how when downloading batch files,
how the files slowly fill in as they are downloaded? Well...

I used the regular bittorrent [latest] to download a batch and
it got to 50% and about half the file were filled up.

Well, I went on the other computer which was networked
with the ones with the batch and I started up the download
[I resumed the file from the other computer] with Bittorrent
expiremental. Well...

After this the files said they were only 25% done!!!
I checked the folder and ALL the files were filled completely....

WTH is going on?
since you said you used the regular bittorrent client, which i'm assuming you mean the one here http://bitconjurer.org/BitTorrent/download.html, then when you first initialize the download, all the space that's required (say you're BT a batch of One Piece 65-70, and it require 890MB, or something like that) is allocated at that moment, and the file"s" will appear incomplete or "not viewable" by any players (although some might, depends how much you downloaded already) since BT is not like downloading one episode at a time, (like moving along from ep 65, to 66, to 67... and so on). BT work by downloading in hash (for the lack of better term), it download a piece from here and a piece from there, and when the client says "download success" it mean the files has pass the CRC check, meaning the files is now at this moment complete files and not before then

i dunno know if you understand my explanation, if someone can do better, please correct where I might be wrong
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Old 2004-01-26, 13:49   Link #3
warnold
nerfelwap
 
 
Join Date: Feb 2003
Location: Richmond, VA, USA
The experimental client uses the BT 3.2 (and earlier) method of allocating space. BT 3.3 switched to a new method that's not compatable. If you switch from a 3.3 version to a 3.2 version you will loose some of your progress. (the exact amount is hard to calculate)

Once a 3.2 compatable program has been used, you can switch back and forth without any further loss.

Detailed Explination: 3.2 created the files and filled them with binary zero's, and then as it downloaded pieces it put them in the correct space.

3.3 only allocates the necessary space to store the downloaded blocks, and moves blocks around as the download procedes. Since many the blocks are in the wrong spaces, a 3.2 client sees them as corrupt. It only finds the blocks that have been moved to the correct locations.

--
-billy-
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