Function parseConnectOptions

src/cmap/connect.ts:326–353

(options: ConnectionOptions)

] as const;

function parseConnectOptions(options: ConnectionOptions): SocketConnectOpts {
  const hostAddress = options.hostAddress;
  if (!hostAddress) throw new MongoInvalidArgumentError('Option "hostAddress" is required');

  const result: Partial<net.TcpNetConnectOpts & net.IpcNetConnectOpts> = {};
  for (const name of LEGAL_TCP_SOCKET_OPTIONS) {
    if (options[name] != null) {
      (result as Document)[name] = options[name];
    }
  }
  result.keepAliveInitialDelay ??= DEFAULT_KEEP_ALIVE_INITIAL_DELAY_MS;
  result.keepAlive = true;
  result.noDelay = options.noDelay ?? true;

  if (typeof hostAddress.socketPath === 'string') {
    result.path = hostAddress.socketPath;
    return result as net.IpcNetConnectOpts;
  } else if (typeof hostAddress.host === 'string') {
    result.host = hostAddress.host;
    result.port = hostAddress.port;
    return result as net.TcpNetConnectOpts;
  } else {
    // This should never happen since we set up HostAddresses
    // But if we don't throw here the socket could hang until timeout
    // TODO(NODE-3483)
    throw new MongoRuntimeError(`Unexpected HostAddress ${JSON.stringify(hostAddress)}`);
  }
}

type MakeConnectionOptions = ConnectionOptions & { existingSocket?: Stream };