About distribution requests

[Odalinda Morales Rojas]

Hi! 
I have installed HAProxy 1.4.25 and install stunnel to receive requests https, 
but I failed to get the real IP of the client, therefore, in HAProxy receive 
all requests with the same IP and my setup has balance sorce, obviously sends 
me all requests to the same backend. How I can do to make haproxy distribute 
requests among all backends? 
thanks in advance