haproxy

haproxy.cfg.txt

backend legacy
	mode http
	timeout connect 10s
	timeout server 30s
	balance roundrobin
	server bigip 213.52.205.36:80 weight 1 maxconn 512

backend elb
	mode http
	timeout connect 10s
	timeout server 30s
	balance roundrobin
	#server uswitch-shared uswitch-shared-977742619.eu-west-1.elb.amazonaws.com:80 weight 1 maxconn 512
	#server uswitch-shared web-d-main-process.uswitchinternal.com weight 1 maxconn 512 redir http://web-d-main-process.uswitchinternal.com
	server uswitch-shared web-d-main-process.uswitchinternal.com weight 1 maxconn 512 

frontend http_proxy
	bind *:80 
	mode http
	option forwardfor
	option http-server-close
	option http-pretend-keepalive
	default_backend legacy
	acl req_elb_path path_beg /gas-electricity/comparison
	reqirep www.uswitch.com  Host:\ main-process.uswitchinternal.com if req_elb_path
	use_backend elb if req_elb_path

listen https_proxy :443
        mode tcp
	option ssl-hello-chk
        balance roundrobin
	server legacy_ssl 213.52.205.36

install.sh

sudo apt-get update
sudo apt-get upgrade

# we'll use PCRE for better regex performance
sudo apt-get install libpcre3-dev

wget http://haproxy.1wt.eu/download/1.4/src/haproxy-1.4.15.tar.gz
tar zxvf haproxy-1.4.15.tar.gz

make TARGET=linux26 ARCH=i386 USE_PCRE=1
sudo make install