Mod-Proxy and Mod-Headers

[Suneet Shah <suneetshah2000@xxxxxxxxx>]

Hello,

I had a question about Mod-Proxy and Mod_headers

1) Is it possible to take a values that are on a query string and pass them as headers? If so how?
For example, if I have:

http://host/myap?userid=abc&role=myrole
I would like to take the values in the query string and pass them as headers to the app that I am proying to

2) I would like to pass the above headers or query string parameters on every request.
How can I do this? Is there a way to put these values in session have have them passed as headers every time?

If there is a better appraoch for the above, please let me know.

thanks in advance for your help
suneet