send method

  1. @override
Future<GatewayTransportResponse> send(
  1. GatewayTransportRequest request
)
override

Send request and resolve to a GatewayTransportResponse when the network call completes. Implementations should throw a TimeoutException or GatewayTransportError only for transport-level failures (DNS, TCP reset, TLS handshake, request timeout). HTTP errors (4xx / 5xx) are returned as a normal response with the appropriate statusCode.

Implementation

@override
Future<GatewayTransportResponse> send(
  GatewayTransportRequest request,
) async {
  requests.add(request);
  // The fake refuses to forward a body that carries any of
  // the banned keys at the TOP LEVEL of the JSON object.
  // Production transports also see only allow-listed top-
  // level keys (see GatewayTransactionRequest); this
  // assertion catches future regressions in tests.
  final assertion = _assertBannedKeysAbsent(request.body);
  if (assertion != null) {
    throw GatewayTransportError(
      message: 'FakeGatewayTransport rejected a request carrying banned '
          'top-level key "$assertion". The gateway-handoff layer must '
          'never serialize PAN / track / CVV / ARQC / cardholder data.',
    );
  }
  if (artificialDelay != null) {
    await Future<void>.delayed(artificialDelay!);
  }
  final err = nextError;
  nextError = null;
  if (err != null) throw err;
  final responder = this.responder;
  if (responder != null) {
    return responder(request);
  }
  return GatewayTransportResponse(
    statusCode: 200,
    body: '{"status":"approved","approved":true,"transactionId":"fake-1"}',
  );
}