LibTorrent 0.11.6

LibTorrent is a BitTorrent library written in C++ for Unix. LibTorrent library is designed to avoid the redundant buffers and data copying that most (all?) other BitTorrent implementations suffer from.
The library is single-threaded and the client handles the select loop. An interactive ncurses client is included as an example.
Main features:
- The client has full control over the polling of sockets.
- Sigc++ signals makes i easy for the client to react to events.
- Fast resume which checks the file modification time.
Direct reading and writing from network to mmaped files:
- Avoids duplication of data where both the application and the kernel has a copy of the file chunk.
- Unused chunks get thrown out or written to disk instead of the swap.
- Kernel handles caching of the file.
File hash check:
- Uses the same thread.
- Client can control the rate. (Will be improved)
- Non-blocking and preload to memory with the mincore and madvise system calls.
File handler:
- Fine-grained use of file read/write permissions, allows seeding of read-only files.
- Allows torrents with unlimited number of files.
- Opens closed files when mapping chunks to memory, with graceful error handling.
- Support for files larger than 2 GB.
- Different download priorities for files in the torrent.
- Multi-tracker support.
- No dependency on any specific HTTP library, the client implements a wrapper class.
- Dynamic request pipe size.
- Upload and download throttle.
- And much more i havent bothered mentioning. (nor implementing)