HAProxy configuration file

haproxy.cfg

frontend all 0.0.0.0:80
    mode tcp
    maxconn 200000
    timeout client 86400000

    default_backend www_backend

    acl is_socket_staging hdr_beg(host) socket.teste

    acl is_socket hdr(Upgrade) -i WebSocket
    acl is_socket hdr_beg(Host) -i ws
    acl is_socket path /socket.io/socket.io.js
    acl is_socket path_beg /socket.io
    acl is_socket url_beg socket

    acl is_app hdr_end(host) -i app.com.br

    use_backend socket_app if is_socket is_app

    tcp-request inspect-delay 500ms
    tcp-request content accept if HTTP
    use_backend socket_app_tcp if !HTTP is_app
# frontend

backend www_backend
    mode http
    option httplog
    option httpclose
    option forwardfor
    balance roundrobin
    timeout server 30000
    timeout connect 4000
    server nginx1 localhost:81 weight 1 maxconn 1024 check
# backend

backend socket_app
    mode http
    option httplog
    option forwardfor
    no option httpclose
    option http-server-close
    option forceclose
    balance roundrobin
    timeout check 1s
    timeout queue 5000
    timeout server 86400000
    timeout connect 86400000
    server app_node1 localhost:8180 weight 1 maxconn 1024 check
# backend

backend socket_app_tcp
    mode tcp
    timeout server 86400000
    timeout connect 86400000
    server app_node2 localhost:8280 weight 1 maxconn 2000 check
# backend