Do you have an example use case why you desire this by chance?
I don't believe MWG can, but am curious what the story is behind the question
It`s a long story.
We have external service (https) and internal/external customers.
For security purposes we do not open ssl traffic for this service.
We need to know which accesses this service.
When we try to do this we existing logs (web gateway and web server) - we have to much similar records.
So main idea - manipulate session ID (add user name) without decryption of SSL.