Unable to connect to redis instance AWS elastic cache - In-Transit Encryption (TLS) enabled

function M.connect_to_redis ()
local redis = require "resty.redis"
local red = redis:new()
red:set_timeout(10000)  
local vcap_services = cjson.decode(os.getenv("ENV"))  
local redis_service_name = os.getenv("REDIS")
local redis_credentials = vcap_services[redis_service_name][1].credentials;
local redis_host = redis_credentials.host
local redis_port = redis_credentials.port
local redis_password = redis_credentials.password  
local ok, err = red:connect(redis_host, redis_port)  
local res, err = red:auth(redis_password)
return red
end

I tried enable ssl=true by passing it as params

local options = {
    ssl = true
}

local ok, err = red:connect(redis_host, redis_port, options)  

Start at M.connect_to_redis and the red:connect(redis_host, redis_port, options) call, then reproduce the failure against an AWS ElastiCache Redis instance with in-transit encryption enabled. Verify the supported TLS connection options and authentication flow; done means the client establishes a secure connection and authenticates successfully.