cuducos.me / chunk
🧱 Chunk is a download manager for slow and unstable servers
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Size detection is HEAD-only with no fallback #3mt5wfazyjq22
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No default User-Agent; some servers reject empty user agents #3mt5wf443ld22
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build_releases.sh: unsafe flags, wrong usage message, and unignored release binaries #3mt5wevjifr22
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Timeout retries are unbounded; a stalled server loops forever #3mt5weqq7u722
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Duplicate URLs in a single call write the same file concurrently #3mt5weq425y22
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Running chunk without URLs silently does nothing and exits 0 #3mt5weltbcd22
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CLI aborts all parallel downloads on the first chunk error #3mt5wel3yxx22
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Default 8 KiB chunk size means 655K HTTP requests per 5 GB download #3mt5wegsqwy22
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Unbounded response body read risks OOM; cap it to catch oversized responses #3mt5weg6krb22
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Docker image ships a non-executable archive instead of the CLI #3mt5web63ir22
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Progress file is rewritten in full on every chunk: O(n^2) write amplification #3mt5weakrtm22
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A corrupt progress file permanently blocks future downloads #3mt5we3vqaf22
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Retry counting is off-by-one and inconsistent; 404s are retried like transient errors #3mt5we3aaxo22
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Percent-encoded separators allow path traversal out of the output directory #3mt5wdvviwl22
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Query strings become part of the downloaded filename #3mt5wdv7eyo22
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File handle leak when progress-file initialization fails #3mt5wdqgem222
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Status stream is non-monotonic and consumers can deadlock on IsFinished() #3mt5wdpojn522
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Data race in the CLI progress bar can panic #3mt5wdjwgcm22
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The timeout flag can only shrink the effective per-chunk timeout; a stuck server retries forever #3mt5wdercgy22
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The concurrency-per-server flag has no effect; the connection cap is fixed at 5 #3mt5wde66bn22
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Zero-byte files cannot be downloaded at all #3mt5wd5q2ct22
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Truncated chunk responses silently corrupt the file and are permanent after resume #3mt5wd3ts4k22
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Servers that ignore the Range header produce silently corrupted files #3mt5w7v73sk22
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