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Topics - sledgehammer_999

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Since many people encounter weird problems with the official 3.0.9 windows build, I did another one which uses libtorrent 0.16.9+svn. This build is intended for troubleshooting purposes by the people affected. It is related to this thread:

Please state:
1. What your problem is with the official build
2. And if it shows up in this build too.


@mods please sticky this and unsticky the other thread. Thank you.

Suggestions / Forum: modify option doesn't work as expected.
« on: March 27, 2013, 08:44:19 pm »
If you want to edit a post you made by clicking the "bottom-right modify icon" the modification UI that appears on the same page is empty. Normally it should contain the text of the post you are editing. The "top-right modify icon" that takes you to a new page works as expected though.

Since many people encounter weird problems with the official 3.0.9 windows build, I did another one which uses libtorrent 0.16.8 instead of 0.16.9. This build is intended for troubleshooting purposes by the people affected. It is a test to see if the culprit is the new version of libtorrent used.

Please state:
1. What you problem is with the official build
2. And if it shows up in this build too.


Latest RC build:,1747.msg8079.html#msg8079


Here is a build of qBittorrent 3.1.0alpha12022013 from git master with:
boost 1.53
libtorrent 0.16.8
openssl: 1.0.1e
qt: 4.8.4

Built using MSVC2008.


Windows / [solved]Do these trackers and DHT work for you?
« on: February 11, 2013, 06:55:05 pm »
For the last 2-3 days I cannot contact these trackers,, (and basically every series torrent from Torrent indexing sites not only show that these trackers are working they also show seeders/leechers stats. What gives?

Furthermore, I cannot connect to DHT, it shows 0 nodes. What is more frustrating is that on the same PC, with the same ISP line, with the same qbt version it worked flawlessly up until 2-3 days ago.

Torrents that use other trackers continue to work as expected.

I even tried ?torrent but I get exactly the same results.

Can you confirm?

(at mods, I didn't know where to create this topic. pls move it to the appropriate section)

Windows / Number of peers returned by the tracker. Is is always 200?
« on: February 02, 2013, 07:15:31 pm »
I have been observing this for A LONG time but it didn't bother me much. In the tracker tab the peers numbers is always 200 for working trackers. It never goes more than that although the tracker's page shows a lot more peers. Anyway, I tested it a little bit and it seems that this is a libtorrent bug. Can you confirm that you never saw a different number than "200" in qbt?

I filed a libtorrent bug->

Windows / Does anyone the file format of utorrent's resume.dat?
« on: November 18, 2012, 11:44:32 am »
I am looking into making the import of utorrent's torrents far easier. I know that utorrent saves all the torrents' related data to the resume.dat file. I also know that the resume.dat file is a bencoded file. But I don't know how uttorrent keeps track of which pieces of a torrent it has downloaded. Do you have any idea/pointers on what to look in the resume.dat file?

The idea is to take the required data/info from resume.dat and make a *.fastresume file for the torrent, thus skipping the "file checking" phase.

Windows / Trying out new gcc 4.7.x builds with lto and size optimizations
« on: October 21, 2012, 12:37:31 pm »
This is a thread to discuss possible optimizations to gcc 4.7.x builds regarding size. I encourage anyone with experience in gcc to contribute here.
Dayman I hope you have something to contribute since you did gcc builds in the past.

The purpose of this is to find a way to make qbittorrent as small as possible with gcc(mingw). qBittorrent has to be linked statically to any external lib (including runtime) except the OS provided ones(Windows XP as base).

MSVC has a feature called "Link Time Code Generation" which effectively reduces the binary size a lot. Currently MSVC2008 built qbittorrent is at 15.2MB.

The gcc equivalent is supposed to be "Link Time Optimization". I was under the impression that it would help with the final binary size but it didn't. I compiled zlib,openssl,boost,libtorrent,qt from source with lto enabled. I did the same for qbittorrent. And the results are:
1. With LTO ~30MB
2. Without LTO ~20MB

So lto actually increases the binary size. Or I did something really stupid in the process.

Some info about qt configuration. In mkspecs\win32-g++\qmake.conf I changed some vars to the following:
Code: [Select]
QMAKE_CFLAGS_RELEASE = -Os -momit-leaf-frame-pointer -flto -static-libgcc
QMAKE_CXXFLAGS = $$QMAKE_CFLAGS -msse -msse2 -mmmx -m3dnow
QMAKE_LFLAGS_RELEASE = -Wl,-s -lwinpthread -static-libgcc -static-libstdc++ -flto

Note: the binary isn't truly "static". It links to the libwinpthread-1.dll instead of the static lib for some reason.

I use gcc 4.7.2 from Mingw builds

I also can provide compilation instructions/help for the libs involved if anyone is interested.

When posting a reply to a thread, the page should redirect to your new reply in the thread and not in thread's parent section. Like other forums do. This helps to read again your answer and maybe read others people's simultaneous posts.

Or maybe you want to keep the thread open in the browser tab so you can update the tab after a few minutes to see if there was an answer.

Linux / debian + qbt 2.9.8 torrents aren't removed
« on: August 03, 2012, 07:27:07 pm »
Does anyone experience this?

If I remove a torrent, quit qbt and start qbt again the torrent I removed is still there. Even when I choose to "delete the files on the hard disk" it doesn't delete them.

I use Debian Sid/unstable 64bit. System partition is ext4 and the files are downloaded to a NTFS partitioned disk. Qbt is 2.9.8 and uses libtorrent 0.15.10.

As a sidenote I did a personal build of qbt 3.0.0rc5+libtorrent 0.16.2svn+boost1.50 and the same problem persists.

Do you guys get it too?

Windows / Discussing the 3.0.0 branch(before going stable)
« on: July 03, 2012, 12:37:23 am »
Today I offered a compilation of 3.0.0rc2.

It has many changes and GUI rearrangements. The most notable one is the "Add torrent dialog". It is quite simplified and it aims to hide the advanced functionality with an "expander button". This is a really good idea. But a previous functionality is lost. In the 2.9.x series there is a checkbox in the dialog to "Set the path a the default". This is used to implement a "Remember last used folder" functionality which is an extremely useful feature when you add torrents from a series that usually go on the same folder which is different from the one set as default.

Please discuss this problem or report other issues for you.

Link to 3.0.11 post->,429.msg7428.html#msg7428


Here is qBittorrent 2.8.5 built with MSVC 2008 express.


Libraries's version used:
Libtorrent: 0.15.7
Qt: 4.7.4
Boost: 1.47.0

Windows / qBittorrent 2.8.4 **unofficial mingw build**
« on: August 26, 2011, 03:53:09 pm »
I just got back from my vacations. I am awake for ~24 hours. But I did a quick build of 2.8.4 for you guys. And now I will go to sleep. Enjoy and report any problems.

Versions used:
Qt: 4.7.3
Boost: 1.47
Libtorrent: 0.15.7
openssl: 1.0.0d


Windows / Why did my thread disappear?!?!?
« on: June 23, 2011, 10:57:31 am »
Uhm, why did my thread about the unofficial builds disappear?  :-X

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