HAProxy config for socket.io

defaults
  log 127.0.0.1:514 local1 debug

# on client connection if policy file can be requested
# from the same host on port 843.
# You cannot use different port here.
frontend flash_policy
  bind 0.0.0.0:843
  mode tcp
  default_backend nodejs_flashpolicy

# Main frontend
frontend proxy
  bind 0.0.0.0:80
  bind 0.0.0.0:8443
  mode http
  option httplog
  # allow for many connections, with long timeout
  maxconn 200000
  timeout client 86400000

  # default to webapp backend
  default_backend webapp

  #websockets
  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 if is_websocket

backend webapp
   mode http
   option httplog
   option httpclose
   server cherrypy1 localhost:7000 check

backend websocket
  mode http
  option httplog
  # long timeout
  timeout server 86400000
  timeout queue 5000
  timeout connect 86400000
  # check frequently to allow restarting
  # the node backend
  #timeout check 1s
  # add X-Forwarded-For
   option forwardfor
  # Do not use httpclose (= client and server
  # connections get closed), since it will close
  # Websockets connections
  no   option httpclose
  # Use "option http-server-close" to preserve
  # client persistent connections while handling
  # every incoming request individually, dispatching
  # them one after another to servers, in HTTP close mode
  option http-server-close
  option forceclose
  # just one node server at :8000
  server node1 localhost:12000 maxconn 2000 check

backend nodejs_flashpolicy
  mode tcp
  server node1 localhost:10843 maxconn 2000 check