tls: add option to connect to redis with enabled tls and auth token

[lanycrost]

• [x] I have read the contributing guide.
• [x] Issue: https://github.com/stickermule/rump/issues/41

Implementation

• radix version is upgraded to v3.7.1 and tested in real environment.
• added auth field to redis Resource struct.
• added new function for retrieving redis url and auth token in connection string. It's done for avoiding code duplication.
• added new test case for checking how validation works with auth token.
• when connecting to redis with auth token we need to define callback to perform authentication and encryption as described here. Here is implementation
• Here I check if auth is enabled we use ConnFunc described above, or your method without authentication (same for target).

Thanks!

[yuyuvn]

It's break auth without TLS support.

For TLS connection, redis url should use rediss:// instead of redis://

[lanycrost]

@yuyuvn it's not braking, I have tested it in both ways, and yes you should use rediss:// for TLS connections which is not available in current version of rump.

[yuyuvn]

@lanycrost Did you test connect to redis server without TLS and have auth? for example: redis://user:[email protected]:6379 strings.Contains(conn, authSeparator) -> this condition will return true, so rump will connect via tls, which is not expected.

and yes you should use rediss:// for TLS connections which is not available in current version of rump. How about implement that in your pull-request? Instead of check @ to determine user want to use TLS or not, check if prefix is rediss or not should be better.

[lanycrost]

@yuyuvn sorry you are right, fixed.