Hojun-Cho
81c44d9ec7
Two Pike cleanups. --auto-split was a got-only third connection-count policy (beside -x and -s) that invented rather than matched aria2. Removing it also retires the now-dead autoConns/maxAutoConns and the per-host transport cap that existed only to scale for it; min(split, M*-x) is the sole policy again. main's exit-code mapping fell back to substring-matching third-party error text (strings.Contains "connection refused"/"timeout"/...), which rots when a dependency rewords a message. The typed checks (errors.Is on the syscall errno, *net.DNSError, net.Error.Timeout, context.DeadlineExceeded) already cover the real stdlib errors -- verified end to end: refused -> 6, bad host -> 19. The two cases that genuinely needed the text match are our own errors, now typed sentinels: httpdl.ErrTimeout (idle timeout) and the bt metadata timeout wrapping context.DeadlineExceeded.
73 lines
2.2 KiB
Markdown
73 lines
2.2 KiB
Markdown
# got
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A command-line download tool in Go. It fetches HTTP(S) files over multiple
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connections and downloads BitTorrent magnets and `.torrent` files — one binary,
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familiar flags.
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## Build
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```sh
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go build -o got .
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```
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Needs Go 1.25+.
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## Usage
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```sh
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# HTTP download with 16 connections
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got -x16 -s16 https://example.com/big.iso
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# resume an interrupted download
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got -c https://example.com/big.iso
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# one file from several mirrors (connections spread across servers,
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# a dead mirror falls over); -Z downloads them as separate files instead
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got -x4 https://a.example/big.iso https://b.example/big.iso
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# a torrent or magnet; seed for 30 minutes after finishing
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got --seed-time=30 ubuntu.torrent
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got 'magnet:?xt=urn:btih:...'
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# many downloads, two at a time
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got -j2 -i urls.txt
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```
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Run `got --help` (or `--help=all`) for every option.
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## Common options
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| flag | meaning | default |
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|------|---------|---------|
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| `-d, --dir` | output directory | `.` |
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| `-o, --out` | output filename | from URL |
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| `-c, --continue` | resume a partial download | false |
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| `-x, --max-connection-per-server` | connections to one server (1–16) | 1 |
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| `-s, --split` | split a download into N connections | 5 |
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| `-j, --max-concurrent-downloads` | downloads at once | 5 |
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| `--max-overall-download-limit` | global speed cap | 0 (off) |
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| `--checksum` | verify the finished file: `TYPE=DIGEST` (sha-256, sha-1, …) | |
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| `--seed-time` | minutes to seed after a torrent finishes | by ratio |
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| `--seed-ratio` | stop seeding at this ratio | 1.0 |
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| `-S, --show-files` | list torrent files and exit | |
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| `-q, --quiet` | no progress output | false |
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## Resume
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HTTP downloads resume from a small `<file>.got` sidecar — just re-run with `-c`.
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Torrents resume from the data already on disk. To resume across runs, point
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`--save-session` and `-i` at the same file:
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```sh
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got -c --save-session=got.session -i got.session <urls/magnets...>
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```
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## Notes
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- BitTorrent uses [`anacrolix/torrent`](https://github.com/anacrolix/torrent);
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HTTP uses the standard library.
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- Not implemented: FTP/SFTP, Metalink, and the JSON-RPC server.
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- When several torrents run at once, `--max-download-limit` /
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`--max-upload-limit` apply per run rather than per torrent (`--max-overall-*`
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are exact).
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