See https://github.com/mongodb/mongo-cxx-driver/blob/d16dfa46a0bf342b88068f1a54b724f1c3aaf099/src/mongo/client/dbclient.cpp#L1395

If SSL is enabled and the 'secure' method is called we do not execute the 'ismaster' call that would normally occur at the end of the connection setup due to the 'return' statement.

This seems incorrect.