Proxy_pass equivalent in HAProxy - azure

Question

what is the equivalent of Nginx pass_proxy this in HAProxy
location /{
proxy_pass https://WebApplication.azurewebsites.net;
}
I tried to test this configuration but I receive 404 when I point to any backend server with the below configuration without using ACLs on root for example with self signed certificate
#---------------------------------------------------------------------
# Global settings
#---------------------------------------------------------------------
global
log /dev/log local0
log /dev/log local1 notice
user haproxy
group haproxy
maxconn 16000
stats socket /var/lib/haproxy/stats level admin
tune.bufsize 32768
tune.maxrewrite 1024
tune.ssl.default-dh-param 2048
daemon
#---------------------------------------------------------------------
# common defaults that all the 'listen' and 'backend' sections will
# use if not designated in their block
#---------------------------------------------------------------------
defaults
log global
mode http
option httplog
option dontlognull
timeout connect 5000
timeout client 50000
timeout server 50000
#---------------------------------------------------------------------
#HAProxy Monitoring Config
#---------------------------------------------------------------------
log global
mode http
option httplog
option dontlognull
timeout connect 5000
timeout client 50000
timeout server 50000
#---------------------------------------------------------------------
# FrontEnd Configuration
#---------------------------------------------------------------------
frontend fe_http_sne_in
bind *:443 ssl crt /etc/ssl/private/mydomain.pem
option forwardfor
default_backend be_default
backend be_default
mode http
option forwardfor
http-request add-header X-Forwarded-For %[src]
server srv02 www.google.com:443 ssl verify none
I receive 404 when pointing to any backend server tested with bing, google as urls ...

Answer 1

I suggest to use the following config
frontend fe_http_sne_in
bind *:443 ssl crt /etc/ssl/private/mydomain.pem
option forwardfor
use_backend be_sne_insecure if { path_beg /test}
default_backend be_default
backend be_default
...
backend be_sne_insecure
mode http
option forwardfor
http-request replace-header Host .* WebApplication.azurewebsites.net
server srv01 WebApplication.azurewebsites.net:443 ssl verify none
In the Blog post Introduction to HAProxy ACLs is the acl explained