{"record":{"id":"7a7dc56ee6b74328","repo":"Textualize/textual","slug":"missing-bytes-in-bytes-data-r","errorCode":null,"errorMessage":"Missing bytes in {bytes_data!r}","messagePattern":"Missing bytes in (.+?)","errorType":"exception","errorClass":"DecodeError","httpStatus":null,"severity":"error","filePath":"src/textual/_binary_encode.py","lineNumber":225,"sourceCode":"        \"\"\"\n        return encoded[position : position + 1]\n\n    def get_bytes(size: int) -> bytes:\n        \"\"\"Get a number of bytes of encode data.\n\n        Args:\n            size: Number of bytes to retrieve.\n\n        Raises:\n            DecodeError: If there aren't enough bytes.\n\n        Returns:\n            A bytes object.\n        \"\"\"\n        nonlocal position\n        bytes_data = encoded[position : position + size]\n        if len(bytes_data) != size:\n            raise DecodeError(b\"Missing bytes in {bytes_data!r}\")\n        position += size\n        return bytes_data\n\n    def decode_int() -> int:\n        \"\"\"Decode an int from the encoded data.\n\n        Returns:\n            An integer.\n        \"\"\"\n        int_bytes = b\"\"\n        while (byte := get_byte()) != b\"e\":\n            int_bytes += byte\n        return int(int_bytes)\n\n    def decode_bytes(size_bytes: bytes) -> bytes:\n        \"\"\"Decode a bytes string from the encoded data.\n\n        Returns:","sourceCodeStart":207,"sourceCodeEnd":243,"githubUrl":"https://github.com/Textualize/textual/blob/06dbeef4bb70fb718236aa418ed658ef4667a126/src/textual/_binary_encode.py#L207-L243","documentation":"get_bytes() tries to read `size` bytes at the current decode position; if the remaining buffer is shorter than requested (commonly size 0 with a leading b'' in this version), it raises DecodeError. Like 'More data expected', it signals a truncated or malformed binary payload.","triggerScenarios":"Decoding a length-prefixed string/bytes section where the declared length exceeds the remaining bytes; truncated payload from a socket read; corrupt or misaligned byte stream (e.g. off-by-one after manual buffer manipulation).","commonSituations":"Network partial reads, corrupted cache files, or feeding arbitrary/modified bytes to load() — often seen alongside 'More data expected' for the same underlying truncation.","solutions":["Validate the payload is complete and unmodified before calling load()","Fix the transport to deliver whole frames (read exactly the framed length)","Regenerate the encoded data from the source instead of repairing truncated bytes","Check for off-by-one slicing if you pre-process the buffer"],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":"from textual._binary_encode import DecodeError\ntry:\n    value = load(payload)\nexcept DecodeError:\n    payload = regenerate()  # re-encode from source and retry once","preventionTips":["Read the declared length fully before decoding","Don't slice or modify encoded buffers","Detect truncation early via length checks before load()"],"tags":["python","textual","serialization","truncated-data","decode-error"],"backgroundTag":"truncated-payload-decode-error","analyzedSha":"06dbeef4bb70fb718236aa418ed658ef4667a126","analyzedAt":"2026-08-27T02:36:57.214Z","schemaVersion":2},"datasetVersion":"2026-08-27T03:17:27.898Z"}