{"record":{"id":"791e0deb7db0c73c","repo":"cube-js/cube","slug":"unable-to-parse-bytes-as-a-utf-8-string","errorCode":null,"errorMessage":"Unable to parse bytes as a UTF-8 string","messagePattern":"Unable to parse bytes as a UTF-8 string","errorType":"exception","errorClass":"std::io::Error (ErrorKind::InvalidData)","httpStatus":null,"severity":"error","filePath":"rust/cubesql/pg-srv/src/buffer.rs","lineNumber":171,"sourceCode":"}\n\npub async fn read_string<Reader: AsyncReadExt + Unpin>(\n    reader: &mut Reader,\n) -> Result<String, Error> {\n    let mut bytes = Vec::with_capacity(64);\n\n    loop {\n        // PostgreSQL uses a null-terminated string (C-style string)\n        let byte = reader.read_u8().await?;\n        if byte == 0 {\n            break;\n        }\n\n        bytes.push(byte);\n    }\n\n    let string = String::from_utf8(bytes).map_err(|_| {\n        Error::new(\n            ErrorKind::InvalidData,\n            \"Unable to parse bytes as a UTF-8 string\",\n        )\n    })?;\n\n    Ok(string)\n}\n\npub async fn read_format<Reader: AsyncReadExt + Unpin>(\n    reader: &mut Reader,\n) -> Result<protocol::Format, ProtocolError> {\n    match reader.read_i16().await? {\n        0 => Ok(protocol::Format::Text),\n        1 => Ok(protocol::Format::Binary),\n        format_code => Err(protocol::ErrorResponse::error(\n            protocol::ErrorCode::ProtocolViolation,\n            format!(\"Unknown format code: {}\", format_code),\n        )","sourceCodeStart":153,"sourceCodeEnd":189,"githubUrl":"https://github.com/cube-js/cube/blob/7d981676b36392fec34088b9afab6bdcad40207c/rust/cubesql/pg-srv/src/buffer.rs#L153-L189","documentation":"While reading a null-terminated (C-style) string from the PostgreSQL wire protocol, the accumulated bytes were not valid UTF-8. PostgreSQL transmits strings as UTF-8, so this indicates a misbehaving or incompatible client sending non-UTF-8 bytes in a startup parameter, statement, or other string field.","triggerScenarios":"Thrown at rust/cubesql/pg-srv/src/buffer.rs:171 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":["Ensure the connecting client sends protocol strings encoded as UTF-8","Check for middleware or proxies corrupting the byte stream","Verify the client driver version is compatible with the PostgreSQL message format"],"exampleFix":null,"handlingStrategy":"validation","validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"7d981676b36392fec34088b9afab6bdcad40207c","analyzedAt":"2026-09-02T03:45:10.400Z","contentChangedAt":null,"schemaVersion":2},"datasetVersion":"2026-09-08T15:18:49.778Z"}