What is a sane default for retries? is it to loop indefinitely? should it retry against the same TCP connection or establish a new one? To the same IP it picked

What is a sane default for retries? is it to loop indefinitely? should it retry against the same TCP connection or establish a new one? To the same IP it picked the first time or a different one, or reresolve the DNS entirely? against the same resolver? IMO theres too much complexity for 'sane defaults' to not just be 'surprising behavior' for someone else's use case.