irule to redirect https to https

I am new to irules and am looking for some assistance.

 

Here is my scenario.

 

 

Three URL addresses go the same address and that causes SSL certificate problems.

 

 

We redirect HTTP://www.main1.com to https://www.main1.com to access the site.

 

 

Correct URL: http://www.main1.com

 

 

Alternative URL: http://main1.com

 

Old URL: http://www.old1.com

 

 

We want to redirect http://main1.com to https://www.main1.com

 

 

and

 

 

We want to redirect http://www.old1.com to https://www.main1.com

 

 

The SSL certificate on the F5 is for www.main1.com.

 

 

Using either of the other URL’s will cause a pop-up message that probably confuses a user.

 

 

Can we re-direct to https:// to the correct URL and not have the SSL pop-up message appear.

 

 

Not sure if this can work.

 

 

Unfortunately, we don’t have a suitable test environment for this configuration so we have to get it right the first time.

 

 

I would rather not have to purchase an additional SSL certificate for each of the 2 other URL addresses.

 

 

Any solution would be appreciated.