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95 lines
2.4 KiB
Markdown
95 lines
2.4 KiB
Markdown
# aquatic
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Blazingly fast, multi-threaded UDP BitTorrent tracker written in Rust.
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Aims to implements the [UDP BitTorrent protocol](https://libtorrent.org/udp_tracker_protocol.html), except that it:
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* Doesn't care about IP addresses sent in announce requests. The packet
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source IP is always used.
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* Doesn't track of the number of torrent downloads (0 is always sent).
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Supports IPv4 and IPv6.
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## Installation and usage
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Install rust (stable is fine) with rustup, as well as cmake. Then, compile and run aquatic:
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```sh
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./scripts/run-server.sh
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```
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To print default configuration as toml, pass the "-p" flag to the binary:
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```sh
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./scripts/run-server.sh -p
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```
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Example output:
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```toml
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socket_workers = 1
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request_workers = 1
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[network]
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address = '127.0.0.1:3000'
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max_scrape_torrents = 255
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max_response_peers = 255
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peer_announce_interval = 900
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socket_recv_buffer_size = 524288
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poll_event_capacity = 4096
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[handlers]
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max_requests_per_iter = 10000
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channel_recv_timeout_microseconds = 200
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[statistics]
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interval = 5
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[cleaning]
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interval = 30
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max_peer_age = 1200
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max_connection_age = 300
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[privileges]
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drop_privileges = false
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chroot_path = '.'
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user = 'nobody'
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```
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To adjust the settings, save this text to a file and make your changes. The
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values you will most likely want to adjust are `socket_workers` (number of
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threads reading from and writing to sockets) and `network.address`. (Some
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documentation of the various options is available in source code file
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`aquatic/src/lib/config.rs`.) Then run aquatic with a "-c" argument pointing
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to the file, e.g.:
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```sh
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./scripts/run-server.sh -c "tmp/aquatic.toml"
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```
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## Benchmarks
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Performance was compared to [opentracker](http://erdgeist.org/arts/software/opentracker/) using `aquatic_load_test`.
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Server responses per second, best result in bold:
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| workers | aquatic | opentracker |
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| ------- | ----------- | ----------- |
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| 1 | n/a | __177k__ |
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| 2 | __168k__ | 98k |
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| 3 | __187k__ | 118k |
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| 4 | __216k__ | 127k |
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| 6 | __309k__ | 109k |
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| 8 | __408k__ | 96k |
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(See `documents/aquatic-load-test-2020-04-19.pdf` for details.)
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## Copyright and license
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Copyright (c) 2020 Joakim Frostegård
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Distributed under Apache 2.0 license (details in `LICENSE` file.)
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## Trivia
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The tracker is called aquatic because it thrives under a torrent of bits ;-)
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