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A tracker for the LBRY protocol.

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LBRY Tracker

The LBRY tracker is a server that helps peers find each other. It was forked from Chihaya, an open-source BitTorrent tracker.

Installation and Usage

Building from HEAD

In order to compile the project, the latest stable version of Go and knowledge of a working Go environment are required.

git clone [email protected]:lbryio/tracker.git
cd tracker
go build ./cmd/chihaya
./chihaya --help

Testing

The following will run all tests and benchmarks. Removing -bench will just run unit tests.

go test -bench $(go list ./...)

The tracker executable contains a command to end-to-end test a BitTorrent tracker. See

tracker --help

Configuration

Configuration of the tracker is done via one YAML configuration file. The dist/ directory contains an example configuration file. Files and directories under docs/ contain detailed information about configuring middleware, storage implementations, architecture etc.

This is an example for an UDP server running on 9252 with metrics enabled. Remember to change the private key to some random string.

---
chihaya:
  announce_interval: "30m"
  min_announce_interval: "15m"
  metrics_addr: "0.0.0.0:6880"
  udp:
    addr: "0.0.0.0:9252"
    max_clock_skew: "10s"
    private_key: ">>>>CHANGE THIS TO SOME RANDOM THING<<<<"
    enable_request_timing: false
    allow_ip_spoofing: false
    max_numwant: 100
    default_numwant: 50
    max_scrape_infohashes: 50
  storage:
    name: "memory"
    config:
      gc_interval: "3m"
      peer_lifetime: "31m"
      shard_count: 1024
      prometheus_reporting_interval: "1s"

Running from Docker

This section assumes docker and docker-compose to be installed on a Linux distro. Please check official docs on how to install Docker Engine and Docker Compose.

Docker Compose from lbry/tracker

In order to define a tracker service and let Docker Compose manage it, create a file named docker-compose.yml with:

version: "3"
services:
  tracker:
    image: lbry/tracker
    command: --config /config/conf.yml
    volumes:
      - .:/config
    network_mode: host
    restart: always

Unfortunately the tracker does not work without network_mode: host due some bug with UDP on Docker. In this mode, firewall configuration needs to be done manually. If using ufw, try ufw allow 9252.

Now, move the configuration to the same directory as docker-compose.yml, naming it conf.yml. If it is not ready, check the configuration section above.

Start the tracker by running the following in the same directory as the compose file: docker-compose up -d Logs can be read with: docker-compose logs To stop: docker-compose down

Building the containter

A Dockerfile is provided within the repo. To build the container locally, run this command on the same directory the repo was cloned: sudo docker build -f Dockerfile . -t some_name/tracker:latest It will produce an image called some_name/tracker, which can be used in the Docker Compose section.

Running from source as a service

For ease of maintenance, it is recommended to run the tracker as a service.

This is an example for running it under as the current user using systemd:

[Unit]
Description=Chihaya BT tracker
After=network.target
[Service]
Type=simple
#User=chihaya
#Group=chihaya
WorkingDirectory=/home/user/github/tracker
ExecStart=/home/user/github/tracker/chihaya --config dist/example_config.yaml
Restart=on-failure
[Install]
WantedBy=multi-user.target

To try it, change /home/user/github/tracker to where the code was cloned and run:

mkdir -p ~/.config/systemd/user
# PASTE FILE IN ~/.config/systemd/user/tracker.service
systemctl --user enable tracker
systemctl --user start tracker
systemctl --user status tracker

Contributing

Contributions to this project are welcome, encouraged, and compensated. For more details, please check this link.

License

LBRY's code changes are MIT licensed, and the upstream Chihaya code is licensed under a BSD 2-Clause license. For the full license, see LICENSE.

Security

We take security seriously. Please contact [email protected] regarding any security issues. Our PGP key is here if you need it.

Contact

The primary contact for this project is @shyba.

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