haproxy.cfg

global
    maxconn     4096 # Total Max Connections. This is dependent on ulimit
    nbproc      1

defaults
    timeout connect 5s
    timeout queue 5s
    timeout server 30s
    timeout tunnel 1h

frontend www 0.0.0.0:8000
    timeout client 1h
    default_backend www_backend
    acl is_websocket path_beg /socket.io
    acl is_websocket hdr(Upgrade) -i WebSocket
    acl is_websocket hdr_beg(Host) -i ws

    use_backend websocket_backend if is_websocket

    tcp-request inspect-delay 500ms
    tcp-request content accept if HTTP
    use_backend flashsocket_backend if !HTTP

frontend flash_policy 0.0.0.0:843
    timeout client 5s
    default_backend flashpolicy_backend

backend www_backend
    mode http
    balance roundrobin
    option forwardfor # This sets X-Forwarded-For
    timeout client 5s
    server server1 localhost:8001 weight 1 maxconn 1024 check
    server server2 localhost:8002 weight 1 maxconn 1024 check
    server server3 localhost:8003 weight 1 maxconn 1024 check

backend websocket_backend
    mode http
    balance roundrobin
    option forwardfor # This sets X-Forwarded-For
    option http-server-close
    option forceclose
    no option httpclose
    cookie SERVERID insert indirect nocache
    server socket1 localhost:8081 cookie socket1 weight 1 maxconn 1024 check
    server socket2 localhost:8082 cookie socket2 weight 1 maxconn 1024 check
    server socket3 localhost:8083 cookie socket3 weight 1 maxconn 1024 check

backend flashsocket_backend
    server socket1 localhost:8081 weight 1 maxconn 1024 check
    server socket2 localhost:8082 weight 1 maxconn 1024 check
    server socket3 localhost:8083 weight 1 maxconn 1024 check

backend flashpolicy_backend
    server socket1 localhost:10843 weight 1 maxconn 1024 check
    server socket2 localhost:10844 weight 1 maxconn 1024 check
    server socket3 localhost:10845 weight 1 maxconn 1024 check

listen stats :8888
    mode http
    stats enable
    stats hide-version
    stats realm Haproxy\ Statistics
    stats uri /
    stats auth admin:admin
    timeout client 5s