# HAProxy config

mkdir /etc/haproxy
cat > /etc/haproxy/haproxy.cfg << EOF
global
  maxconn 4096

defaults
  mode http
  
frontend all 0.0.0.0:80
  timeout client 86400000
  default_backend www_nodejs
  acl is_websocket hdr(upgrade) -i websocket
  acl is_websocket hdr_beg(host) -i ws
  
  use_backend www_nodejs if is_websocket
  
backend www_nodejs
  option forwardfor
  timeout server 86400000
  timeout connect 4000
  server nodejs 127.0.0.1:3000 weight 1 maxconn 10000 check

EOF

# Test haproxy config
haproxy -c -f /etc/haproxy/haproxy.cfg