{"record":{"id":"ca8208986f049dcd","repo":"Zackriya-Solutions/meetily","slug":"expected-range-not-satisfiable-416-response-received","errorCode":null,"errorMessage":"Expected range-not-satisfiable 416 response, received {}","messagePattern":"Expected range-not-satisfiable 416 response, received (.+?)","errorType":"exception","errorClass":null,"httpStatus":null,"severity":"error","filePath":"frontend/src-tauri/src/parakeet_engine/parakeet_engine.rs","lineNumber":792,"sourceCode":"        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            ));\n        }\n        let content_range = response\n            .headers()\n            .get(reqwest::header::CONTENT_RANGE)\n            .ok_or_else(|| anyhow!(\"416 response is missing Content-Range\"))?;\n        match parse_content_range(content_range)? {\n            ContentRange::Unsatisfied { total } if total == exact_bytes => Ok(()),\n            ContentRange::Unsatisfied { total } => Err(anyhow!(\n                \"416 response reports {} total bytes, expected {}\",\n                total,\n                exact_bytes\n            )),\n            ContentRange::Range { .. } => Err(anyhow!(\"416 response has a satisfied Content-Range\")),\n        }\n    }","sourceCodeStart":774,"sourceCodeEnd":810,"githubUrl":"https://github.com/Zackriya-Solutions/meetily/blob/a2cb62e827da7ef59f65064c97233efb2313878e/frontend/src-tauri/src/parakeet_engine/parakeet_engine.rs#L774-L810","documentation":"During Parakeet model download verification, the engine probes the server with a Range request at the file's total size to confirm exact file length; it expects an HTTP 416 Range Not Satisfiable reply. This error is thrown by validate_unsatisfied_response when the server returned a different status code instead.","triggerScenarios":"The resume-probe Range request (bytes=<exact_bytes>-) against the model artifact URL returns any status other than 416 — e.g. 200 (server ignores Range headers), 403, 404, or 502 from a proxy/CDN in front of the model host.","commonSituations":"Pointing the download at a mirror that does not support HTTP Range requests; a corporate proxy stripping Range headers; the artifact URL returning an error page (404/403) instead of honoring the probe; S3/CDN misconfiguration where Range requests are rejected.","solutions":["Check the model base_url points at a server supporting HTTP Range requests (curl -r 0-0 -I <url> should return 206).","Verify the artifact filename/URL is correct so the probe does not hit a 404 or 403 error page.","Remove or reconfigure proxies/CDN layers that strip the Range request header.","Retry the download; the engine falls back to a full re-download once a proper 416 is received."],"exampleFix":"// before: mirror ignores Range, probe returns 200\nlet base_url = \"http://internal-mirror/models/hf\";\n// after: use a Range-capable host (e.g. huggingface.co)\nlet base_url = \"https://huggingface.co/facebook/parakeet-tdt-0.6b-v2-int8/resolve/main\";","handlingStrategy":"retry","validationCode":"// preflight: confirm the host honors Range requests\ncurl -s -o /dev/null -w '%{http_code}' -r 0-0 <base_url>/<filename>   # expect 206","typeGuard":null,"tryCatchPattern":"match download_result {\n    Err(e) if e.to_string().contains(\"416 response\") || e.to_string().contains(\"Expected range-not-satisfiable\") => {\n        // mirror lacks Range support: delete partials and re-download, or switch base_url\n        remove_partial_files(model_dir).await?;\n        retry_download(canonical_base_url).await\n    }\n    Err(e) => Err(e),\n    Ok(p) => Ok(p),\n}","preventionTips":["Use Range-capable hosts (huggingface.co, S3, nginx) for model mirrors.","Test mirrors with `curl -r 0-0 -I` before pointing the app at them.","Avoid proxies that strip the Range header.","Keep artifact URLs exact so the probe never hits a 404 error page."],"tags":["http","download","resume","network"],"backgroundTag":"unexpected-http-status","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"}