If I use DBClientConnection () API to make mongodb connection, I can specify _autoReconnect to be true which allow automatic reconnect on a connection failure.

However, I am using following API to connect (recommended way?):
=====================================================
std::string errString;
mongo::ConnectionString mongoConnectionString = mongo::ConnectionString::parse(hostAndPortStr_, errString);
...
mongoPtr_ = mongoConnectionString.connect(errString);
if (!mongoPtr_->auth(mongodbDatabase_, mongodbUsername_, mongodbPassword_, errString))

;
============================================
I don't see a way to set auto_reconnect to true using this API.
Is auto_reconnect true or false in this case?
If it is false, how do I set it to true?

Thanks in advance!