Ocelot

Ocelot is a BitTorrent tracker written in C++ for the Gazelle project. It supports requests over TCP and can only track IPv4 peers.

Ocelot Compile-time Dependencies

• GCC/G++ (11+ required; 11.4.0+ recommended)
• Boost (1.74.0+ required)
• libev (required)
• MySQL++ (3.2.0+ required)
• jemalloc (optional, but strongly recommended)
• TCMalloc (optional)

Installation

Debian Bookworm

sudo apt-get install \
    build-essential \
    cmake \
    default-libmysqlclient-dev \
    libboost-iostreams-dev \
    libboost-system-dev \
    libev-dev \
    libjemalloc-dev \
    libmysql++-dev \
	netcat-traditional \
    pkg-config
cmake -Wno-dev . -B build 
make -C build

The Gazelle installation guides include instructions for installing Ocelot as a part of the Gazelle project.

Docker

docker build . -t ocelot
docker run -v $(pwd)/ocelot.conf:/srv/ocelot.conf ocelot

Standalone Installation

• Prepare the build environment. (This must be re-executed when new source files are added).

    cmake -Wno-dev . -B build
  

• Create the following tables according to the Gazelle database schema:

• torrents
• torrents_leech_stats
• users_freeleeches
• users_leech_stats
• users_main
• xbt_client_whitelist
• xbt_files_users
• xbt_snatched

• Edit ocelot.conf to your liking.

• Build Ocelot:

    make -C build
  

Running Ocelot

Run-time options:

• -c <path/to/ocelot.conf> - Path to config file. If unspecified, the current working directory is used.
• -v - Print queue status every time a flush is initiated.

You can run a test ocelot daemon alongside a production daemon by specifying a separate configuration file, and setting readonly = true. This will prevent the database peer tables from being reset.

Signals

• SIGHUP - Reload config
• SIGUSR1 - Reload torrent list, user list and client whitelist