ssl offloading configuration

Hello,

Does anyone have configured ssl offloading on the fortigate? I have used the 'cookbook' but it doesn't explain too well how to configure half mode ssl server configuration.

I need to decrypt incoming https and forward this unencrypted to backend http server.

What I configured:

conf firewall policy

set dstaddr "vip-to-webserver"  => 157.52.x.x to 172.16.16.15

set service https

set webcache enable

set webcache-https ssl-server

and:

config wanopt ssl-server

edit webserver1

set ip 172.16.16.15

set port 443 

set ssl-mode half

set mapped-port 80

set ssl-cert <webserver certificate>

Please advise.

Thank you in advance,

Kind regards,

Ralph