dnsName 
  The DNS identifier assigned to the instance that is running the game session. Values have the following format:
- TLS-enabled fleets: - <unique identifier>.<region identifier>.amazongamelift.com.
- Non-TLS-enabled fleets: - ec2-<unique identifier>.compute.amazonaws.com. (See Amazon EC2 Instance IP Addressing.)
When connecting to a game session that is running on a TLS-enabled fleet, you must use the DNS name, not the IP address.