aquatic

Fast, multi-threaded UDP BitTorrent tracker written in Rust.

Aims to implements the UDP BitTorrent protocol, except that it:

Doesn't care about IP addresses sent in announce requests. The packet source IP is always used.
Doesn't track of the number of torrent downloads (0 is always sent).

Supports IPv4 and IPv6.

There is currently no support for a info hash black- or whilelist.

Benchmarks

Performance was compared to opentracker using aquatic_load_test.

Server responses per second, best result in bold:

System: Hetzner CCX41 VPS (16 dedicated vCPUs, Skylake)
OS: Debian 10, kernel 4.19.0-8-amd64
aquatic commit: 61841fff
opentracker also has a single threaded event mode. It didn't perform as well (143k responses/second) as blocking single-threaded mode.

Default settings were used, except that:

load test duration = 120 seconds
load test multiple_client_ips = true
load test worker settings were tuned for best results for each trackers
aquatic request_workers was always = 1, only socket_workers setting was raised. Number in table corresponds to sum of both values

The tracker is called aquatic because it thrives under a torrent of bits ;-)