Creating a torrent with two files in folder island_fever3_HD

../island_fever3_HD/IslandFever3.nfo 2.4KB -> 2.4 KB
../island_fever3_HD/IslandFever3.wmv 4.4GB-> 109.6MB

Filesystem: ext3
Chucksize: 1024
Start seeding: no
Private: yes
For testing i tried the rufus client for making this torrent, and it made a proper torrent of the directory. So i guess it's a KTorrent or a KDE library bug. (nice and small huh... )

PS.I have uploaded the torrent on a tracker at the moment, so if you wanna have it for testing just pm me and i'll point you to the right direction. (note: 4.4GB though)

I would need the data to be able to reproduce this, but you can send me the torrent, so I can have a look at that.

You've got PM.

Can you also send me the generated KT torrent for comparison ?

You've got PM.

It seems I was relying on a Qt class which gave back the size of a file in a 32 bit number (doesn't work well with files > 4 GB)

That was a fast recover again
Looking forward to test a fix when it's done.

Should be fixed now,

cool!
Thanks for the great work you are doing George, and all the bug fixing that have been done this weekend

Oeps, i forgot to thank you...
Bug is solved for me too.

Thanks for your hard work!
8 euro paypal coming your way...

You are far to generous stoeptegel, thanks.

George wrote:It seems I was relying on a Qt class which gave back the size of a file in a 32 bit number (doesn't work well with files > 4 GB)

This problem is still present in Fedora Core's ktorrent-2.0.3-4.fc6.x86_64.rpm package
about half a year latter. Wasn't the fix propagated to maintained baseline ?

Also, it appears in lattest beta binaries (for SuSE) and is trivially easy to test for.
Create a file with size of 4.0 GB + some, and observe the "new torrent" to be created
with size "some".

$ touch test.file
$ perl -e 'truncate("test.file", 4*1024*1024*1024+100);'


/Matti Aarnio

PS: Lattest code refuses to compile on Fedora Core 6 platform with most confusing error message. I definitely have kdelibs installed, but the thing is looking for something else ?

I think it's only fixed on latest svn..

http://sotapeli.fi/ktorrent-2.1svn610701-1.fc6.src.rpm

Try to build that.

Wtf, if this was fixed in march it should have been part of 2.0 and any later release.

George wrote:Wtf, if this was fixed in march it should have been part of 2.0 and any later release.

I traced the issue and found the cause:

libktorrent/torrent/torrentcreator.cpp
@@ -193,8 +199,8 @@
}
else
{
- enc.write("length"); enc.write((Uint64)fi.size());
-
+ enc.write("length"); enc.write((Uint64)bt::FileSize(fi.absFilePath()));
+
}
enc.write("name"); enc.write(name);
enc.write("piece length"); enc.write((Uint64)chunk_size);

Also I don't undertsand this piece of code a bit early:
...
else
{
tot_size = bt::FileSize(target);
num_chunks = tot_size / chunk_size;
if (tot_size % chunk_size > 0)
num_chunks++;
last_size = tot_size % chunk_size;
Out() << "Tot Size : " << tot_size << endl;

tot_size = fi.size();

At first you got correct file size with bt::FileSize(target) and after that in the end just replaced it with wrong one. QFileInfo::size is uint 32 so just impossible to get size > 4Gb. Looks like a bad merge for me.

--
Alexey