isIP function

bool isIP (
  1. String str,
  2. [dynamic version]
)

check if the string str is IP version 4 or 6

  • version is a String or an int.

Implementation

bool isIP(String str, [/*<String | int>*/ version]) {
  version = version.toString();
  if (version == 'null') {
    return isIP(str, 4) || isIP(str, 6);
  } else if (version == '4') {
    if (!_ipv4Maybe.hasMatch(str)) {
      return false;
    }
    var parts = str.split('.');
    parts.sort((a, b) => int.parse(a) - int.parse(b));
    return int.parse(parts[3]) <= 255;
  }
  return version == '6' && _ipv6.hasMatch(str);
}