haproxy configuration

[mwinkens]

In the README you provide an apache, nginx and cadet configuration, here is yet another one:

frontend <your-domain>
	bind ...
	...
	acl is_whiteboard path_beg -i /whiteboard
	use_backend whiteboard if is_whiteboard
        ...

backend whiteboard
	mode http
	option forwardfor
	option http-server-close
	http-request replace-path /whiteboard(/)?(.*) /\2
	timeout tunnel 1h
	http-request set-header Connection "Upgrade"
	http-request set-header Upgrade %[req.hdr(Upgrade)]
	server whiteboard 192.168.0.1:3002 check   # your internal IP address and port, here default whiteboard port

Uses <your_domain>/whiteboard as path (so you configure with /whiteboard), removes it and forwards connection to whiteboard server. Take a look at sticky sessions if you want to add more whiteboard servers