Macro cf_connection_timeout 

cf_connection_timeout!() { /* proc-macro */ }

Creates a validated CfConnectionTimeout wrapper for CloudFront origin connection timeouts at compile time.

Validation Rules

• Connection timeout (first value) must be between 1 and 10 seconds (if provided)
• Response completion timeout (second value) must be greater than or equal to connection timeout (if both provided)
• Both values are optional