VmessURL constructor

VmessURL({
  1. required String url,
})

Creates a VmessURL by parsing the provided vmess share link string.

Throws ArgumentError if the url does not start with vmess:// or cannot be decoded into a valid JSON config payload.

Implementation

VmessURL({required super.url}) {
  if (!url.startsWith('vmess://')) {
    throw ArgumentError('url is invalid');
  }
  var 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');
  }
  final 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'],
  );
  final String? fingerprint =
      (rawConfig['fp'] != null && rawConfig['fp'] != '')
          ? rawConfig['fp']
          : streamSetting['tlsSettings']?['fingerprint'];
  super.populateTlsSettings(
    streamSecurity: rawConfig['tls'],
    sni: rawConfig['sni']?.toString().isNotEmpty == true
        ? rawConfig['sni'].toString()
        : sni,
    fingerprint: fingerprint,
    alpns: rawConfig['alpn'],
    publicKey: null,
    shortId: null,
    spiderX: null,
    pinnedPeerCertSha256: (rawConfig['pcs'] ??
            rawConfig['pinSHA256'] ??
            rawConfig['pinnedPeerCertSha256'])
        ?.toString(),
    verifyPeerCertByName:
        (rawConfig['vcn'] ?? rawConfig['verifyPeerCertByName'])?.toString(),
  );
}