I've setup Haproxy, varnish and apache2 on ubuntu server and there are multiple web site running with http and https.

following setup configured as below:

---443--> |
          | HAProxy ------>Varnish(8081) ----------> apache2(8080)
---80---> |

haproxy.cfg

frontend http-example
bind *:80


frontend https-example
    bind *:443 ssl crt /etc/letsencrypt/live/
    mode http
    http-request set-header X-Forwarded-Proto https

    default_backend example

backend example
    stick-table type binary len 32 size 30k expire 30m
    acl clienthello req_ssl_hello_type 1
    acl serverhello rep_ssl_hello_type 2
    tcp-request inspect-delay 5s
    tcp-request content accept if clienthello
    tcp-response content accept if serverhello
    stick on payload_lv(43,1) if clienthello
    stick store-response payload_lv(43,1) if serverhello

    server varnish 127.0.0.1:8081 check

Plan:

HAproxy : Here I have to configure, if user execute exmaple.com and then redirect to -For https

if example1.in then redirect to and so on.