HTTPS to HTTP redirect for maintance page.
We have a HTTPS virtual server that is set as a basic configuration with no iRules. For multiple reasons (security, and simplicity being the biggest) the SSL certs are terminated on the back-end servers directly, the LTM just passes the traffic directly through.
We have a new requirement to implement a maintenance page for one of our sites. One of the options is to write an iRule that sends the client a 302 redirect to an HTTP website while the pool is unavailable. I believe that this should be doable, but based on my understanding of the relationship between SSL/TLS and HTTP it would require that the SSL session be established before the HTTP redirect can occur, which would require that the SSL certs be moved to the LTM. Our architect disagrees and believes that we shouldn't have to house the certs on the LTM in order to implement an HTTPS to HTTP redirect.
I have been searching for documentation to support either positon, and I'm not having a lot of luck. Can anyone advise?