VmessURL constructor

VmessURL({ required String url, })

Decodes the JSON payload of a lowercase vmess:// link.

Invalid scheme, base64 or JSON throws ArgumentError. Required VMess field types must match the share-link format; malformed types can also throw TypeError. This is not a native Core check.

Implementation

VmessURL({required super.url}) {
  if (!url.startsWith('vmess://')) {
    throw ArgumentError('url is invalid');
  }
  String raw = url.substring(8);
  if (raw.length % 4 > 0) {
    raw += "=" * (4 - raw.length % 4);
  }
  try {
    rawConfig = jsonDecode(utf8.decode(base64Decode(raw)));
  } catch (_) {
    throw ArgumentError('url is invalid');
  }
  var sni = super.populateTransportSettings(
    transport: rawConfig['net'],
    headerType: rawConfig['type'],
    host: rawConfig['host'],
    path: rawConfig['path'],
    seed: rawConfig['path'],
    quicSecurity: rawConfig['host'],
    key: rawConfig['path'],
    mode: rawConfig['type'],
    serviceName: rawConfig['path'],
    extra: rawConfig['extra'],
  );
  String? fingerprint = (rawConfig['fp'] != null && rawConfig['fp'] != '')
      ? rawConfig['fp']
      : streamSettingsBuilder.tlsFingerprint;
  final configuredSni = rawConfig['sni'] as String?;
  super.populateTlsSettings(
    streamSecurity: rawConfig['tls'],
    allowInsecure: allowInsecure,
    sni: configuredSni == null || configuredSni.isEmpty ? sni : configuredSni,
    fingerprint: fingerprint,
    alpns: rawConfig['alpn'],
    publicKey: null,
    shortId: null,
    spiderX: null,
    pinnedPeerCertSha256:
        rawConfig['pcs'] ?? rawConfig['pinnedPeerCertSha256'],
    verifyPeerCertByName:
        rawConfig['vcn'] ?? rawConfig['verifyPeerCertByName'],
  );
}