curl.sh

curl --proxy http://ip_of_your_server_with_haproxy:9000 --proxy-user proxy_user_of_proxy_service:proxy_password_of_proxy_service https://lumtest.com/myip.json && echo ""

haproxy.cfg

global
	log /dev/log	local0
	log /dev/log	local1 notice
	chroot /var/lib/haproxy
	stats socket /run/haproxy/admin.sock mode 660 level admin expose-fd listeners
	stats timeout 30s
	user haproxy
	group haproxy
	daemon

	# Default SSL material locations
	ca-base /etc/ssl/certs
	crt-base /etc/ssl/private

	# See: https://ssl-config.mozilla.org/#server=haproxy&server-version=2.0.3&config=intermediate
        ssl-default-bind-ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384
        ssl-default-bind-ciphersuites TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256
        ssl-default-bind-options ssl-min-ver TLSv1.2 no-tls-tickets

defaults
	log	global
	mode	http
	option	httplog
	option	dontlognull
        timeout connect 5000
        timeout client  50000
        timeout server  50000
	errorfile 400 /etc/haproxy/errors/400.http
	errorfile 403 /etc/haproxy/errors/403.http
	errorfile 408 /etc/haproxy/errors/408.http
	errorfile 500 /etc/haproxy/errors/500.http
	errorfile 502 /etc/haproxy/errors/502.http
	errorfile 503 /etc/haproxy/errors/503.http
	errorfile 504 /etc/haproxy/errors/504.http

### Added ####

listen stats
   # Change the port number to your desired port for accessing the stats page
    bind *:8888          
    mode http
    stats enable
    stats hide-version
    stats realm Haproxy\ Statistics
    stats uri /stats
    stats auth admin:cool_secure_password

frontend front_proxy_1
    mode http
    timeout client 1s
    maxconn 50
    bind :9000
    default_backend back_proxy_1

backend back_proxy_1
    mode http
     # this option will ensure server connection closure after processing
    option http-server-close
    
    balance leastconn

    # Capture Proxy-Authorization header

    capture request header Proxy-Authorization len 200

    server s1 zproxy.lum-superproxy.io:22225 maxconn 50

watch.sh

watch netstat -ant