Retry logic on servers either in c# or cpp

Hi friends.. I have urgent query.. quick help is appreciated I need to write retry logic in c#/ c++ with below scenario 1)in config file(ini file) I need list of server 2) after that in c#/cpp file if one server fails then request should go to another server and so on..there is list of 5 server Currently in our application if server fails then it retries on the same server.Now as per the requirement it should try on different server instead of same server. So I need retry logic for different server