parseKey static method

({String address, int port})? parseKey(String key)

Parse a key string into address and port Supports both IPv4 and IPv6 formats:

• IPv4: "192.168.1.100:8080"
• IPv6: "2001:db8::1:8080" Returns null if the format is invalid

Implementation

static ({String address, int port})? parseKey(String key) {
  // Check for IPv6 format with brackets
  if (key.startsWith('[')) {
    final closeBracket = key.indexOf(']');
    if (closeBracket == -1) return null;

    final ipv6Address = key.substring(1, closeBracket);
    final portPart = key.substring(closeBracket + 1);

    if (!portPart.startsWith(':')) return null;

    final port = int.tryParse(portPart.substring(1));
    if (port == null) return null;

    return (address: ipv6Address, port: port);
  }

  // IPv4 format
  final lastColon = key.lastIndexOf(':');
  if (lastColon == -1) return null;

  final address = key.substring(0, lastColon);
  final port = int.tryParse(key.substring(lastColon + 1));
  if (port == null) return null;

  return (address: address, port: port);
}