How can I set length of token validity

[ertankucukoglu]

Hello,

I as far as I can understand from the code, every KEY_REGENERATION seconds a new token is generated.
There is a WINDOW_SIZE seconds tolerance for token validation.
But, I couldn't understand how long a token will be valid.
Duration changes as I play with KEY_REGENERATION value.
Is there a way to know the validity duration?

Thanks.