canonicalAuthenticationOrigin function

Implementation

String canonicalAuthenticationOrigin(Uri address) {
  final scheme = switch (address.scheme.toLowerCase()) {
    'https' => 'wss',
    'http' => 'ws',
    'wss' => 'wss',
    'ws' => 'ws',
    _ => throw ArgumentError.value(
      address,
      'address',
      'Authentication origins must use WS or WSS.',
    ),
  };
  var host = address.host.toLowerCase();
  if (host.endsWith('.')) host = host.substring(0, host.length - 1);
  if (host.isEmpty) {
    throw ArgumentError.value(address, 'address', 'Host cannot be empty.');
  }
  final port = address.hasPort ? address.port : (scheme == 'wss' ? 443 : 80);
  return Uri(scheme: scheme, host: host, port: port).toString();
}