Function is_ipv4_address 

pub fn is_ipv4_address(s: &str) -> bool

Check if the string is a valid IPv4 address

Examples

use nginx_lint_plugin::helpers::is_ipv4_address;

assert!(is_ipv4_address("127.0.0.1"));
assert!(is_ipv4_address("192.168.1.1"));
assert!(is_ipv4_address("0.0.0.0"));
assert!(is_ipv4_address("255.255.255.255"));

assert!(!is_ipv4_address("example.com"));
assert!(!is_ipv4_address("127.0.0.1.1"));
assert!(!is_ipv4_address("256.0.0.1"));
assert!(!is_ipv4_address("localhost"));