[squid-users] help with reverse proxy sending user to peer

[jmperrote]

hello I need a help to know it is posible with squid to pass the 
username autenticated on reverse proxy to the peer ?

I have a reverse proxy, with external autentification type on ldap 
repository, once the user is validated on reverse
proxy and redirect to the peer, I need to send the username, o something 
that permit to the webserver server (peer) know
the username that was autenticated on squid.

The idea is that the webserver aplication can catch like POST method or 
similar the username logued and autenticated on reverse proxy-

regards-