simple apps in various programming languages to test ssl connection to mysql rds
http://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/UsingWithRDS.SSL.html
to download it run:
wget https://s3.amazonaws.com/rds-downloads/rds-combined-ca-bundle.pem
mysql -u user -p -h some.mysql.rds.url.amazonaws.com --ssl-ca=/root/rds-combined-ca-bundle.pem --ssl-verify-server-cert
mysql> status;
...
SSL: Cipher in use is AES256-SHA