Configure Haproxy on local

Help!
1

Hello,

I got an admin panel and a front for user
url admin panel : localhost:81
url front : localhost:82

So for practicity i did add in my host : 127.0.0.1 domain.com, but i still have the port
What i want to do is to use haproxy to rewrite the url for both app like remove the port and make the url front to “domain.com” and url admin panel “domain.com/admin”

here my actual haproxy.cfg but it don’t work and i don’t understand why, of course i tried to access it with domain.com/back or domain.com/front:

global

defaults
    mode http
    timeout connect 5000ms
    timeout client 50000ms
    timeout server 50000ms

frontend http-in
    bind *:80

    acl has_back path_beg /back
    acl has_front path_beg /front

    use_backend back if has_back
    use_backend front if has_front

    default_backend back

backend back
    reqrep ^([^\ ]*\ /)back[/]?(.*)     \1\2
    server back back:80 check

backend front
    reqrep ^([^\ ]*\ /)front[/]?(.*)     \1\2
    server front front:80 check

Thanks in advance