isIpv4 property
bool
isIpv4
Checks whether the String
is a valid IPv4.
Example 1
String foo = '192.168.1.14';
bool isIpv4 = foo.isIpv4; // returns true
Example 2
String foo = '192.168.1.14.150.1225';
bool isIpv4 = foo.isIpv4; // returns false
Implementation
bool get isIpv4 {
if (this.isBlank) {
return false;
}
var regex = RegExp(
r'((?:^|\s)([a-z]{3,6}(?=://))?(://)?((?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.(?:25[0-5]|2[0-4]\d|[01]?\d\d?)\.(?:25[0-5]|2[0-4]\d|[01]?\d\d?))(?::(\d{2,5}))?(?:\s|$))');
return regex.hasMatch(this);
}