I have read that
Load balancers/reverse proxies usually have 2 operation modes.
In the first one, the requests from the clients are forward to one of the backends as is if they come directly from the source. Is this case the LB only redirects the request and the backend answers back directly to the client.
On the second mode, the LB answers the request and then creates a new one to the backend with the content from the initial one. Then receives the answer and forwards it to the client.
How can I check what mode my HAproxy is operating in and how can I switch from one mode to other