{"record":{"id":"3f2632f7cb77011e","repo":"Zackriya-Solutions/meetily","slug":"partial-response-range-length-overflow","errorCode":null,"errorMessage":"Partial response range length overflow","messagePattern":"Partial response range length overflow","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"frontend/src-tauri/src/parakeet_engine/parakeet_engine.rs","lineNumber":777,"sourceCode":"            .ok_or_else(|| anyhow!(\"Partial response is missing Content-Range\"))?;\n        let ContentRange::Range { start, end, total } = parse_content_range(content_range)? else {\n            return Err(anyhow!(\"Partial response has an unsatisfied Content-Range\"));\n        };\n        if start != expected_start || end != exact_bytes - 1 || total != exact_bytes {\n            return Err(anyhow!(\n                \"Partial response range {}-{} / {} does not match {}-{} / {}\",\n                start,\n                end,\n                total,\n                expected_start,\n                exact_bytes - 1,\n                exact_bytes\n            ));\n        }\n        let expected_length = end\n            .checked_sub(start)\n            .and_then(|length| length.checked_add(1))\n            .ok_or_else(|| anyhow!(\"Partial response range length overflow\"))?;\n        if let Some(content_length) = Self::declared_content_length(response)? {\n            if content_length != expected_length {\n                return Err(anyhow!(\n                    \"Partial response declared {} bytes, expected {}\",\n                    content_length,\n                    expected_length\n                ));\n            }\n        }\n        Ok(())\n    }\n\n    fn validate_unsatisfied_response(response: &reqwest::Response, exact_bytes: u64) -> Result<()> {\n        if response.status() != reqwest::StatusCode::RANGE_NOT_SATISFIABLE {\n            return Err(anyhow!(\n                \"Expected range-not-satisfiable 416 response, received {}\",\n                response.status()\n            ));","sourceCodeStart":759,"sourceCodeEnd":795,"githubUrl":"https://github.com/Zackriya-Solutions/meetily/blob/a2cb62e827da7ef59f65064c97233efb2313878e/frontend/src-tauri/src/parakeet_engine/parakeet_engine.rs#L759-L795","documentation":"Thrown by `validate_partial_response` when computing the expected range length via `end.checked_sub(start).and_then(|l| l.checked_add(1))` overflows `u64` — only possible with absurd/adversarial header values (e.g. end far below start or values near u64::MAX). It is an arithmetic-safety guard on untrusted server data.","triggerScenarios":"A malicious or buggy server returns a Content-Range with start/end values whose span computation overflows u64 (e.g. start > end, or end == u64::MAX).","commonSituations":"Compromised or hostile mirror; fuzzed/corrupted responses from a broken proxy; essentially never seen with legitimate model servers.","solutions":["Switch to a trusted, official model URL — this indicates the server's headers are not trustworthy.","Inspect the raw response headers (`curl -v -r 0-99 <url>`) to identify the bad server/proxy.","Report the misbehaving mirror if it is one configured by the app."],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":"// Only download from allow-listed, trusted hosts\nconst TRUSTED_HOSTS: &[&str] = &[\"huggingface.co\", \"official-mirror.example\"];\nlet host = reqwest::Url::parse(url)?.host_str().unwrap_or(\"\").to_string();\nif !TRUSTED_HOSTS.contains(&host.as_str()) { eprintln!(\"untrusted host; refusing download\"); }","typeGuard":null,"tryCatchPattern":"match result {\n    Err(e) if e.to_string().contains(\"range length overflow\") => {\n        eprintln!(\"hostile/broken server headers; abort and switch source\");\n        switch_to_trusted_mirror()\n    }\n    other => other,\n}","preventionTips":["Restrict downloads to allow-listed hosts.","Treat all response headers as untrusted input; prefer checked arithmetic (already done here).","Investigate any mirror that produces this error — it indicates corrupt or hostile headers."],"tags":["network","http-headers","overflow","security"],"backgroundTag":"value-out-of-range","analyzedSha":"a2cb62e827da7ef59f65064c97233efb2313878e","analyzedAt":"2026-09-12T11:12:14.152Z","contentChangedAt":"2026-09-12T11:12:14.152Z","schemaVersion":2},"datasetVersion":"2026-09-14T05:17:10.506Z"}