How to use frontend without binding IP

Help!
1

Hi team,

I am trying to setup certain configuration. where one front-end is sending data to back-end via ha-proxy.

#Nv sending data 
frontend www
bind x.x.x.x:443 ssl crt /etc/haproxy/ssl/abc.pem crt /etc/haproxy/ssl/def.pem
mode http
acl if_string_nv path_beg /test_rum
acl if_string_nv1 path_beg /nv
use_backend nv_server if if_string_nv
use_backend nv_server if if_string_nv1

#NF Sending data
acl if_string_nf path_end /_search
acl if_string_nf1 path_beg /_bulk
use_backend nf_server if if_string_nf
use_backend nf_server if if_string_nf1

backend nv_server
 server server1 x.x.x.x:8090 check

backend nf_server
  server server1 x.x.x.x:9200 check

All x.x.x.x having same internal IP address

In second fronted, i have to receive data in https and forward to back-end in http format to x.x.x.x:9200.

Any help? What code i should write where i will receive data in https format and store it in http format.

Thanks