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Break down the large DNS handling function into smaller, focused functions with clear responsibilities: - Extract handleDNSQuery from serveDNS handler function - Create dedicated startListeners function for listener management - Add standardQueryRequest struct to encapsulate query parameters - Split special domain handling into separate function - Add descriptive comments for each new function - Improve variable names for better clarity (e.g., startTime vs t) This refactoring improves code maintainability and readability without changing the core DNS proxy functionality.