libtorrent is an open source C++ library implementing the BitTorrent protocol, along with most popular extensions, making it suitable for real world deployment. It is configurable to be able to fit both servers and embedded devices.

The main goals of libtorrent are to be efficient and easy to use.

See libtorrent.org for more detailed build and usage instructions.

To build with boost-build, make sure boost and boost-build is installed and run:

b2

In the libtorrent root. To build the examples, run b2 in the examples directory.

See building.html for more details on how to build and which configuration options are available. For python bindings, see the python docs.

When creating a pull request, please consider the following checklist:

• make sure both travis-CI and appveyor builds are green. Note that on gcc and clang warnings are treated as errors. Some tests may be flapping, if so, please issue a rebuild of the specific build configuration. (I'm working on making all tests deterministic)
• If adding a user-facing feature, please add brief entry to ChangeLog
• Add a unit test to confirm the new behavior or feature. Don't forget negative tests (i.e. failure cases) and please pay as much care to tests as you would production code.
• rebase on top of master periodically
• if your patch is against the current stable release branch, please also forward-port the patch to master (at the time of this writing, automatic merge in git does not work, possibly because the branch was created in svn)
• if your patch adds a new .cpp file, please make sure it's added to the appropriate Jamfile, Makefile.am and CMakeList.txt. If it's adding a header file, make sure it's added to include/libtorrent/Makefile.am.