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Siegfried Pammer
4d42b38af1
Pre-checking stream.Length before reading is racy (the stream can shrink between check and read) and not every stream knows its length ahead of time. Instead, catch EndOfStreamException at each read: a stream too short for the magic is passed through as not-XALZ, and a truncated header or payload after a confirmed magic is rejected as InvalidDataException. stream.Length remains only a sizing hint for the payload buffer. Assisted-by: Claude:claude-fable-5:Claude Code