Connection String Options are all named beginning with "uri."
http://docs.mongodb.org/manual/reference/connection-string/
However, the right way to use them is to specify the options without "uri." prefix, like in few examples distributed in the long manual text. So, it is not evident that we should trucate "uri." and use only the second part of the option in the connection string.
Used mongo-cxx-driver to create connection string with and without "uri."
Suggestion: rename all options trucating "uri." prefix.