Need to look into a payload of https traffic and route it to appropriate pool based on some payload data

Here is another thing which I failed to mention earlier.

1. Firstly, I need to look into all the encrypted payload first, then identify which field I need to use to make that forwarding decision. I just know what information I am seeking in the payload, but don't know which part of payload that information exists.
2. Once that is identified, I will then need to write an irule to make decisions based on that specific field.

So currently I am just trying to have a look at all of the payload which is encrypted. I hope I have made myself clear this time.