Example

Serving application

Text Only

global
    log stdout local0 info
    log /dev/log    local0 info alert
    log /dev/log    local1 notice alert
    user root
    # group nogroup
    daemon

defaults
    log global
    option      dontlognull
    timeout connect 5000
    timeout client 50000
    timeout server 50000



listen mqtt_2883
    bind *:2883
    timeout connect 7000
    timeout client 70000
    timeout server 70000
    timeout tunnel 3600s
    mode tcp
    option tcplog
    log #{PRIV_IP} local0 debug
    server mqtt_1883 mosquitto:1883 check

frontend http
    mode http
    bind *:80


# Certbot
    acl letsencrypt_challenge path_beg /.well-known/acme-challenge/
    use_backend letsencrypt_backend  if letsencrypt_challenge
    redirect scheme https code 301 if !letsencrypt_challenge


frontend https
    mode http

    bind *:443 ssl crt /certs/combined.pem

    option httplog

    redirect location /docs/ if { path_reg -i ^/docs$ }


    acl is_options method OPTIONS
    acl is_http path_beg /api/incomingData /api/actilityIntegration/readings /api/incomingLora
    acl is_api path_beg /api
    acl is_docs path_beg /docs


    use_backend cors if is_options
    use_backend http2amqp if is_http
    use_backend appserver if is_api
    use_backend docs if is_docs
    use_backend frontend

backend letsencrypt_backend
    mode http
    server certbot certbot:9999 # Certbot listens on this port


backend appserver
    mode http
    http-response set-header Access-Control-Allow-Origin api-example.com 
    balance roundrobin
    server appserver backend:8080 check inter 5000

backend http2amqp
    mode http
    http-response set-header Access-Control-Allow-Origin api-example.com 
    balance roundrobin
    compression algo gzip
    compression offload
    server http http2amqp:8080 check inter 5000

backend docs
    mode http
    http-response set-header Access-Control-Allow-Origin api-example.com
    http-request replace-path /docs([/]?)(.*) /\2
    balance roundrobin
    server docs #{PRIV_IP}:1337 check inter 5000


backend frontend
    mode http
    http-response set-header Access-Control-Allow-Origin api-example.com
    balance roundrobin
    server apache frontend:80 check inter 5000

backend cors
    mode http
    errorfile 503 /etc/haproxy/options.http

TEXT

Text Only

HTTP/1.1 200 OK
Access-Control-Allow-Headers: Origin, Accept, X-Session_id, Content-Type, x-requested-with, Content-Type, Authorization, client-security-token
Access-Control-Allow-Origin: *
Access-Control-Allow-Credentials: true
Access-Control-Max-Age: 1000
Access-Control-Allow-Methods: HEAD, DELETE, POST, GET, OPTIONS, PUT
Connection: close```